WO1999046325A1 - Composition de copolymere d'ethylene et utilisation de cette derniere - Google Patents
Composition de copolymere d'ethylene et utilisation de cette derniere Download PDFInfo
- Publication number
- WO1999046325A1 WO1999046325A1 PCT/JP1999/001144 JP9901144W WO9946325A1 WO 1999046325 A1 WO1999046325 A1 WO 1999046325A1 JP 9901144 W JP9901144 W JP 9901144W WO 9946325 A1 WO9946325 A1 WO 9946325A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ethylene
- film
- copolymer
- olefin
- group
- Prior art date
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- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- 235000020232 peanut Nutrition 0.000 description 1
- 238000007719 peel strength test Methods 0.000 description 1
- UVBBCQLPTZEDHT-UHFFFAOYSA-N pent-4-en-1-amine Chemical group NCCCC=C UVBBCQLPTZEDHT-UHFFFAOYSA-N 0.000 description 1
- 125000004115 pentoxy group Chemical group [*]OC([H])([H])C([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- MWSOLOKEHHPOBC-UHFFFAOYSA-N pentylaluminum Chemical compound CCCCC[Al] MWSOLOKEHHPOBC-UHFFFAOYSA-N 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- KAVGMUDTWQVPDF-UHFFFAOYSA-N perflubutane Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)F KAVGMUDTWQVPDF-UHFFFAOYSA-N 0.000 description 1
- 229950003332 perflubutane Drugs 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- ZQBAKBUEJOMQEX-UHFFFAOYSA-N phenyl salicylate Chemical compound OC1=CC=CC=C1C(=O)OC1=CC=CC=C1 ZQBAKBUEJOMQEX-UHFFFAOYSA-N 0.000 description 1
- 229960000969 phenyl salicylate Drugs 0.000 description 1
- XMGMFRIEKMMMSU-UHFFFAOYSA-N phenylmethylbenzene Chemical group C=1C=CC=CC=1[C]C1=CC=CC=C1 XMGMFRIEKMMMSU-UHFFFAOYSA-N 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 235000021110 pickles Nutrition 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920005638 polyethylene monopolymer Polymers 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 235000013594 poultry meat Nutrition 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- XWIHRGFIPXWGEF-UHFFFAOYSA-N propafenone hydrochloride Chemical compound Cl.CCCNCC(O)COC1=CC=CC=C1C(=O)CCC1=CC=CC=C1 XWIHRGFIPXWGEF-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- QLNJFJADRCOGBJ-UHFFFAOYSA-N propionamide Chemical compound CCC(N)=O QLNJFJADRCOGBJ-UHFFFAOYSA-N 0.000 description 1
- 229940080818 propionamide Drugs 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000008262 pumice Substances 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 235000013580 sausages Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 239000013464 silicone adhesive Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-N sodium;hydron;carbonate Chemical compound [Na+].OC(O)=O UIIMBOGNXHQVGW-UHFFFAOYSA-N 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920006302 stretch film Polymers 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- PUGUQINMNYINPK-UHFFFAOYSA-N tert-butyl 4-(2-chloroacetyl)piperazine-1-carboxylate Chemical compound CC(C)(C)OC(=O)N1CCN(C(=O)CCl)CC1 PUGUQINMNYINPK-UHFFFAOYSA-N 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
- NZNAAUDJKMURFU-UHFFFAOYSA-N tetrakis(2,2,6,6-tetramethylpiperidin-4-yl) butane-1,2,3,4-tetracarboxylate Chemical compound C1C(C)(C)NC(C)(C)CC1OC(=O)CC(C(=O)OC1CC(C)(C)NC(C)(C)C1)C(C(=O)OC1CC(C)(C)NC(C)(C)C1)CC(=O)OC1CC(C)(C)NC(C)(C)C1 NZNAAUDJKMURFU-UHFFFAOYSA-N 0.000 description 1
- 150000007970 thio esters Chemical class 0.000 description 1
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 1
- 229960002447 thiram Drugs 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 238000013271 transdermal drug delivery Methods 0.000 description 1
- NDUUEFPGQBSFPV-UHFFFAOYSA-N tri(butan-2-yl)alumane Chemical compound CCC(C)[Al](C(C)CC)C(C)CC NDUUEFPGQBSFPV-UHFFFAOYSA-N 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- YGRHYJIWZFEDBT-UHFFFAOYSA-N tridecylaluminum Chemical compound CCCCCCCCCCCCC[Al] YGRHYJIWZFEDBT-UHFFFAOYSA-N 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-M triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-M 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 description 1
- KCIGYNKTLBKIGD-UHFFFAOYSA-L trifluoromethanesulfonate;zirconium(2+) Chemical compound [Zr+2].[O-]S(=O)(=O)C(F)(F)F.[O-]S(=O)(=O)C(F)(F)F KCIGYNKTLBKIGD-UHFFFAOYSA-L 0.000 description 1
- ORYGRKHDLWYTKX-UHFFFAOYSA-N trihexylalumane Chemical compound CCCCCC[Al](CCCCCC)CCCCCC ORYGRKHDLWYTKX-UHFFFAOYSA-N 0.000 description 1
- UAEJRRZPRZCUBE-UHFFFAOYSA-N trimethoxyalumane Chemical compound [Al+3].[O-]C.[O-]C.[O-]C UAEJRRZPRZCUBE-UHFFFAOYSA-N 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- OPSWAWSNPREEFQ-UHFFFAOYSA-K triphenoxyalumane Chemical compound [Al+3].[O-]C1=CC=CC=C1.[O-]C1=CC=CC=C1.[O-]C1=CC=CC=C1 OPSWAWSNPREEFQ-UHFFFAOYSA-K 0.000 description 1
- CNWZYDSEVLFSMS-UHFFFAOYSA-N tripropylalumane Chemical compound CCC[Al](CCC)CCC CNWZYDSEVLFSMS-UHFFFAOYSA-N 0.000 description 1
- WQYLDIHJKFIWGZ-UHFFFAOYSA-N tris(2,4-dibutylphenyl) phosphate Chemical compound CCCCC1=CC(CCCC)=CC=C1OP(=O)(OC=1C(=CC(CCCC)=CC=1)CCCC)OC1=CC=C(CCCC)C=C1CCCC WQYLDIHJKFIWGZ-UHFFFAOYSA-N 0.000 description 1
- RTAKQLTYPVIOBZ-UHFFFAOYSA-N tritert-butylalumane Chemical compound CC(C)(C)[Al](C(C)(C)C)C(C)(C)C RTAKQLTYPVIOBZ-UHFFFAOYSA-N 0.000 description 1
- 150000003673 urethanes Chemical class 0.000 description 1
- 238000007666 vacuum forming Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- DUNKXUFBGCUVQW-UHFFFAOYSA-J zirconium tetrachloride Chemical compound Cl[Zr](Cl)(Cl)Cl DUNKXUFBGCUVQW-UHFFFAOYSA-J 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms
- C08L23/0815—Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms with aliphatic 1-olefins containing one carbon-to-carbon double bond
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/30—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds comprising olefins as the major constituent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2314/00—Polymer mixtures characterised by way of preparation
- C08L2314/06—Metallocene or single site catalysts
Definitions
- the present invention relates to an ethylene copolymer composition and its use.
- the present invention also relates to the use of the above-mentioned ethylene copolymer composition. Background art.
- Ethylene copolymers are molded by various molding methods and are used for various purposes.
- the required properties of the ethylene copolymer also differ depending on the molding method and application. For example, if an inflation film is to be molded at a high speed, an ethylene copolymer should be used in order to stably perform high-speed molding without bubble fluctuation or tearing. Therefore, one with a large melt tension (melt tension) must be selected for the molecular weight. Similar properties are needed to prevent sagging or tearing in hollow forming or to minimize width drop in T-die forming.
- melt tension (melt tension) of the ethylene polymer obtained using a Ziegler-type catalyst, especially a titanium-based catalyst was improved to increase the expansion ratio (die-to-jewel ratio). How to improve formability? And JP-A-56-90810 or JP-A-60-106806.
- ethylene polymers, particularly low-density ethylene copolymers, obtained by using a titanium catalyst have a wide composition distribution, and have a composition such as film. Components that cause stickiness when formed are often contained, and it has been desired to further reduce the components that cause stickiness.
- ethylene polymers produced using Ziegler-type catalysts ethylene polymers obtained using chromium-based catalysts have relatively high melt tension, but are more thermally stable. Sex was desired.
- Some ethylene-based copolymers obtained with an olefin polymerization catalyst containing a transition metal metallocene compound have a high melt tension and also have a high thermal stability. It is expected to meet the above demands because of its good quality.
- ethylene copolymers obtained Ri by the meta port Se emissions catalyst generally, main Le to manual down-motion and (MT) and flow activation energy (E a) is proportional.
- a polymer having a large melt tension has excellent moldability due to its excellent bubble stability.
- the flow activity Chemical flannel ghee (E a) is high, the Conoco temperature dependence of the molding conditions is meant the Okiiko. For this reason, unless the molding conditions are controlled extremely strictly and uniformly, unevenness occurs in the obtained molded body. For example, in the case of films, transparency may be reduced.
- the present invention has been made in view of the above situation, and is an ethylene which can produce films and molded articles having excellent transparency and mechanical strength and has excellent moldability.
- the purpose of the present invention is to provide a copolymer composition and to provide the use of the ethylene copolymer. And.
- the ethylene copolymer composition (A) according to the present invention comprises:
- shear stress in the in the 2.4 X 1 0 6 dyne / flowability is defined as a shear rate when reaching the cm Lee Nde' box (FI) and main Le preparative flow rate (MF R) and power?
- Haze is 0.25 / (l—d) X 1 og (3 XMT 1 ' 4 ) X (C— 3). ⁇ 'When the number of carbon atoms (C) in the ⁇ -olefin is 7 or 8,
- the above ethylene-unrefined copolymer (A) is, for example,
- (b-1) a small number of transition metal compounds represented by the following general formula (I): At least one transition metal compound;
- L 1 is a ligand coordinated to the transition metal atom ⁇ , and at least two ligand L 1 is Ri substituted consequent Ropenta Jeniru groups der having one group also rather less that is selected from a hydrocarbon group having a carbon number of 3 to 1 0, ligands other than substituted Sik
- Ropentajeniru group L 1 is a hydrocarbon group having 1 to 12 carbon atoms, an alkoxy group, an aryloxy group, a trialkylsilyl group, a halogen atom or a hydrogen atom
- X is an atom of a transition metal Value.
- L 2 is a ligand that coordinates to the transition metal atom, and at least two The ligand L 2 is a methylcyclopentenyl group or an ethylcyclopentenyl group, and the ligand L 2 other than the methylcyclopentenyl or ethylcyclopentagenenyl group is a carbon atom. It is a hydrocarbon group having 1 to 12 atoms, an alkoxy group, an aryloxy group, a trialkylsilyl group, a halogen atom or a hydrogen atom, and X is a valence of a transition metal atom.
- the (a) organic aluminum oxy compound it is preferable that the transition metal compound (bI) and the transition metal compound (b-II) are supported on the carrier (c).
- the ethylene copolymer composition ( ⁇ ′) is a copolymer of ( ⁇ ) ethylene and ⁇ - olefin having 6 to 8 carbon atoms.
- a high-pressure radical method low-density polyethylene that satisfies the relationship represented by
- the ratio between the melt flow rate (MFR (C)) of (C) and the melt flow rate (MFR (B)) of (B) is the ratio between the melt flow rate (MFR (C) and the melt flow rate (MFR (B)) of (B)
- composition comprising the above-mentioned ethylene ' ⁇ -olefin copolymer (B) and the above-mentioned ethylene.
- ⁇ -olefin copolymer (C) is the above-mentioned ethylene- ⁇ -olefin copolymer (C).
- the ethylene-olefin copolymer ( ⁇ ) and (C) are both ethylene-1 hexene-1 It is a copolymer and is composed of ethylene-forefine copolymers ( ⁇ ) and (C).
- the haze of the film has the following relationship. It is preferable to satisfy
- Shear stress at 1 9 0 ° C is 2. 4 X 1 0 6 dyne / cm 2 in fluidity Lee Nde' click scan defined by a shear rate at the time of arrival (FI) and main Le preparative flow rate (MF R) and force
- the composition comprising the above ethylene.
- ⁇ -olefin copolymer ( ⁇ ) and (C) is mixed with the above ( ⁇ ′).
- the ethylene-based copolymer composition (A) or the ethylene-based copolymer composition (A *) further includes
- Density is in the range of 0.850 to 0.980 g / cm 3 , (D-ii) 135, intrinsic viscosity measured in decalin [7] Force 0.4 to Ethylene- ⁇ -olefin copolymer in the range of 8diZg is blended into ethylene-olefin copolymer ( ⁇ ) and high-pressure radical method low-density polyethylene ( ⁇ ) Composition ( ⁇ ) and ethylene ⁇ .
- the ethylene ' ⁇ -olefin copolymer ( ⁇ ) and the ethylene' olefin copolymer (D) are not the same, and the ethylene ⁇ -olefin copolymer is not the same.
- the fin copolymers (I) and (C) are not the same as the ethylene-hydroolefin copolymer (D).
- the single-layer film or sheet, the multilayer film or sheet, the injection-molded article, the extruded article, the fiber, the foam-formed article, and the wire sheet according to the present invention are the above-mentioned molded articles. It is formed from such an ethylene copolymer composition.
- polymerization is sometimes used to include not only homopolymerization but also copolymerization.
- polymer is used not only for homopolymer but also for homopolymer. It is sometimes used to include polymers.
- the ethylene-based copolymer composition according to the present invention is formed by ethylene, ⁇ -olefin copolymer ( ⁇ ), ethylene- ⁇ -olefin copolymer. Body ( ⁇ ), ethylene '.
- ⁇ ⁇ -olefin copolymer
- ⁇ ethylene- ⁇ -olefin copolymer
- Body ⁇
- ethylene ' ethylene '.
- C -olefin copolymer
- E high-pressure radial-filtration low-density polyethylene
- Ethylene ' ⁇ -olefin copolymer ( ⁇ ) is composed of ethylene and carbon atoms. It is a random copolymer with ⁇ -olefins of Formulas 6 to 8. As the ⁇ -olefin having 6 to 8 carbon atoms used for the copolymerization with ethylene, a linear unbranched ⁇ -olefin is preferred, and specifically, Examples include 1-hexene, 1-heptene, and 1-octene, and hexene-1 is particularly preferably used.
- the ethylene olefin copolymer ( ⁇ ) has the following properties (A-i) to (A-iii).
- the ethylene-olefin copolymer having such properties has a high melt tension ( ⁇ ), and thus has good moldability.
- the MFR is measured under the conditions of 190 ° C. and a load of 2.16 kg according to ASTM D1238-65T.
- Melt tension is determined by measuring the stress when a molten polymer is stretched at a constant speed. That is, the produced polymer powder is melted by a usual method, then pelletized, and used as a measurement sample.
- the resin temperature is 190 X: extruding speed using an MT measuring device manufactured by Toyo Seiki Seisaku-sho, Ltd. 15 mm / min, winding speed 10 to 2 O mZ min, The test was performed under the conditions of a nozzle diameter of 2.09 mm and a nozzle length of 8 mm.
- the ethylene (ethylene) copolymer is preliminarily added to tri (2,4-di-1-butylphenyl) phosphate as a secondary antioxidant. .
- E a X10 > (0.039Ln (C- 2) +0.0096) if it is XX Tasu2.87 is estimated that long chain branching is present , full I Lum moldability and transparency are improved.
- E a XlO> (0.039Ln ( C-2) +0.1660)
- the measurement of the flow activation energy (E a ) is described in, for example, “Polymer Experiments, Vol. 9, Thermodynamic Properties I (ed. Ri ⁇ Contact listed in the second page 8) ", the viscoelastic frequency dependence was measured, time - shift off from ⁇ click evening one flow activation energy first temperature superposition (E a) is obtained. If the graph of the storage elastic modulus (vertical axis) measured at a certain reference temperature and the Vs angular velocity (horizontal axis) is fixed, and the data measured at another measurement temperature is moved in parallel to the horizontal axis, the reference temperature (Thermal simplicity).
- the angular velocity ( ⁇ (radZ sec)) dispersion of the storage modulus (G '(dyne / cm 2 )) was measured using a Rheometer RDS-II manufactured by Rheometrics.
- the sample holder used a 25 mm parallel plate and the sample thickness was about 2 mm.
- the measurement temperatures were 130, 170, 200, and 230, and G 'was measured at each temperature in the range of 0.04 ⁇ ⁇ 400 .
- the temperature was raised to 150, and then set to 130, and then the measurement was performed.
- the amount of distortion was appropriately selected in the range of 2 to 25% so that torque in the measurement range could be detected and torque was not reduced.
- Haze is 0.45 / (1— d) X 1 og (3 XMT 1 ' 4 ) X (C— 3) 0 1 ⁇ -year-old
- Haze is 0.25 / (1— d) xlog (3 XMT 1 ' 4 ) X (C— 3) ° +' ⁇ -If the number of carbon atoms (c) is 7 or 8,
- the flow index (FI) is determined by extruding the resin from the cavity while changing the shear rate, and measuring the stress at that time.
- resin temperature 190, shear force range Force? It is measured at about 5 ⁇ 10 4 to 3 ⁇ 10 6 dyne / cm 2 .
- the density (d) was obtained by measuring the strand obtained during melt flow rate (MFR) measurement under a load of 2.16 kg at 190 ° C for 1 hour at 120 ° C. After heat treatment, slowly cool down to room temperature over 1 hour, measure with a density gradient tube.
- MFR melt flow rate
- the ethylene / ⁇ -olefin copolymer (II) preferably satisfies the following requirements in addition to the above requirements.
- the constituent units derived from ethylene are 50 to 100% by weight, preferably 55 to 99% by weight.
- good Ri preferred to rather 6 5-9 8% by weight, rather than the most preferred is present in an amount of 7 0-9 6 by weight 0/0
- composition of the ethylene- ⁇ -olefin copolymer is generally about 20 Omg of the copolymer in a 1 Omm sample tube and homogeneously dispersed in 1 m1 of hexachlorobenzene.
- the 13 C-NMR spectrum of the sample dissolved in the sample was measured at a measurement temperature of 120 X:, a measurement frequency of 25.0 MHz, a spectrum width of 150 Hz, and a pulse repetition time of 4. It is determined by measuring under the measurement conditions of 2 sec. And pulse width of 6 ⁇ se.
- the density (d) of the ethylene-olefin copolymer (A) is 0.880-0.970 g / cm 3 , preferably 0.880-0. 9 6 0 g Zcm 3, good Ri preferred to rather than the 0.8 9 0 to 0.9 3 5 / (:. 111 3, most preferred to rather than the 0. 9 0 5 ⁇ 0 9 3 0 g / cm 3 It is desirable to be within the range.
- the melt flow rate ( ⁇ FR) of the ethylene olefin copolymer (A) is 0.02 to 203/10 minutes, preferably 0.02.
- the amount of ⁇ -decane-soluble component (the smaller the soluble component, the narrower the composition distribution) of the ethylene / ⁇ -olefin copolymer was determined by measuring about 3 g of the copolymer with ⁇ . -In addition to 450 m1 of decane, dissolve at 145 ° C, cool to 23, remove the n-decane-insoluble part by filtration, and remove the n-decane-soluble part from the filtrate. It is done by collecting.
- the temperature (Tm) at the maximum peak position of the endothermic curve measured with a differential scanning calorimeter (DSC) was about 5 mg of the sample.
- DSC differential scanning calorimeter
- the ethylene / ⁇ -olefin copolymer having a density (d) as described above has a narrow composition distribution.
- the ethylene / ⁇ -olefin copolymer (A) as described above contains two or more types. They can be used in combination.
- the ethylene / olefin copolymer (A) is, for example,
- (b-II) a catalyst for olefin polymerization (Cat-1) formed from at least one transition metal compound selected from the transition metal compounds represented by the general formula (II); It can be obtained by copolymerizing ethylene and n-olefin having 6 to 8 carbon atoms in the presence.
- an organoaluminoxy compound (b-1) at least one transition metal compound selected from the transition metal compounds represented by the general formula (I) and (b-II) At least one transition metal compound selected from the transition metal compounds represented by the general formula (II) may be supported on (c) a carrier (hereinafter, such a supported type)
- the catalyst is sometimes abbreviated as Cat-2).
- the organic aluminum methoxy compound ( a ) may be a conventionally known benzene-soluble aluminoxane. It may be a benzene-insoluble organic aluminum methoxy compound as disclosed in Japanese Patent No. 276807.
- the aluminoxane as described above can be produced, for example, by the following method, and is usually obtained as a hydrocarbon solution.
- the aluminoxane may contain a small amount of an organometallic component.
- the solvent or unreacted organic aluminum compound may be removed from the recovered solution of aluminoxane by distillation, and then redissolved in the solvent.
- organic aluminum compound used in the production of aluminoxane include trimethyl aluminum, triethyl aluminum, and tripropyl aluminum.
- Trialkyl aluminum such as pentyl aluminum, trihexyl aluminum, trioctyl aluminum, tridecyl aluminum, etc .
- Dialkyl aluminum chlorides such as minichloride, getyl aluminum chloride, getyl aluminum bromide, diisobutyl aluminum chloride
- Dialkyl aluminum hydrides such as dimethyl aluminum hydride, diisobutyl aluminum hydride, and hydride
- isoprenyl aluminum represented by the following formula.
- Solvents used in the production of aluminoxane include aromatic hydrocarbons such as benzene, toluene, xylene, cumene, simene, pentane, hexane, heptane, Aliphatic hydrocarbons such as octane, decane, dodecane, hexadecane, octadecane; cyclopentane, cyclohexane, cyclooctane, methylsilyl Alicyclic hydrocarbons such as clopentane; petroleum fractions such as gasoline, kerosene, and gas oil; or halogenated compounds of the above aromatic hydrocarbons, aliphatic hydrocarbons, and alicyclic hydrocarbons (eg, chlorine) Hydrocarbon solvents such as chlorides and bromides).
- the benzene-insoluble organoaluminum dimethyl compound has an A1 component soluble in benzene of 60 when the A1 component is 10% or less, preferably 5% or less, particularly preferably 2% or less in terms of A1 atom. Yes, it is insoluble or hardly soluble in benzene.
- the solubility of such an organic aluminum compound in benzene is such that the organic aluminum compound corresponding to A1 of 100 microgram atoms can be dissolved in 100 ml of benzene.
- the transition metal compound (b-1) is a transition metal compound represented by the following general formula (I)
- the transition metal compound (b-II) is a transition metal compound represented by the following general formula (II) It is.
- L 1 is a ligand that coordinates to the transition metal atom ⁇ , and at least two ligand L 1 is Ri substituted consequent Ropenta Jeniru groups der having one group also rather less that is selected from a hydrocarbon group having a carbon number of 3 to 1 0, other than substituted Sik Rope te Jeniru group
- the ligand L 1 has 1 to 1 carbon atoms. 12 is a hydrocarbon group, an alkoxy group, an aryloxy group, a trialkylsilyl group, a halogen atom or a hydrogen atom, and X is a transition metal atom
- ⁇ is a transition metal atom selected from Group 4 of the periodic table
- L 2 is a ligand that coordinates to the transition metal atom ⁇ , and at least
- the two ligands L 2 are a methylcyclopentenyl group or an ethylcyclopentenyl group, and a ligand other than the methylcyclopentenyl group or the ethylcyclopentenyl group.
- L 2 is a hydrocarbon group having 1 to 12 carbon atoms, an alkoxy group, an aryloxy group, a trialkylsilyl group, a halogen atom or a hydrogen atom, and X is a transition metal atom. Valence. )
- transition metal compound represented by the general formula (I) or (II) will be described more specifically.
- ⁇ is a transition metal atom selected from Group 4 of the periodic table, specifically, zirconium, titanium or hafdium, preferably zirconium. is there.
- L 1 is a ligand that coordinates to the transition metal atom ⁇ , and at least two of these ligands L 1 are selected from a hydrocarbon group having 3 to 10 carbon atoms. A substituted cyclopentadienyl group having at least one substituent. These ligands L 1 may be different from one even each identical.
- the substituted cyclopentenyl group may have two or more substituents, and the two or more substituents may be the same or different. Good.
- the substituted cyclopentagenyl group has two or more substituents, at least one substituent need only be a hydrocarbon group having 3 to 10 carbon atoms, and the other substituents A methyl group, an ethyl group or a hydrocarbon group having 3 to 10 carbon atoms.
- hydrocarbon group having 3 to 10 carbon atoms include an alkyl group, a cycloalkyl group, an aryl group and an aralkyl group. More specifically, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, t-butyl, pentyl, hexyl, octyl, 2- Alkyl groups such as ethylhexyl group and decyl group; cycloalkyl groups such as cyclopentyl group and cyclohexyl group; aryl groups such as phenyl group and triyl group; benzyl group and neo- An aralkyl group such as a file group can be exemplified.
- an alkyl group is preferable, and an n-propyl group and an n-butyl group are particularly preferable.
- a disubstituted cyclopentagenenyl group is preferred, and a 1,3-substituted cyclopentagenenyl group is particularly preferred.
- the ligand L 1 other than the coordinating substituted consequent Ropen data Jeniru group to the transition metal atom M is a hydrocarbon group having a carbon number of 1 to 2, an alkoxy group, ⁇ Li It is a monooxy group, a trialkylsilyl group, a halogen atom or a hydrogen atom.
- hydrocarbon group having 1 to 12 carbon atoms examples include an alkyl group, a cycloalkyl group, an aryl group and an aralkyl group, and more specifically, a methyl group.
- -25-alkyl groups such as ethyl, hexyl, octyl, 2-ethylhexyl and decyl; cycloalkyl groups such as cyclopentyl and cyclohexyl;
- An aryl group such as an enyl group and a tolyl group; and an aralkyl group such as a benzyl group and a neofil group can be exemplified.
- Alkoxy groups include methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, sec-butoxy Examples include a xy group, a t-butoxy group, a pentoxy group, a hexoxy group, an octoxy group, and the like.
- aryloxy group examples include a phenoxy group and the like.
- trialkylsilyl group examples include a trimethylsilyl group, a triethylsilyl group, and a triphenylsilyl group.
- Halogen atoms are fluorine, chlorine, bromine, and iodine.
- transition metal compound represented by the general formula (I) examples include bis (n-propylcyclopentagenenyl) zirconium dichloride and bis (n-butylcyclopentagenenyl) zirconium.
- the disubstituted cyclopentagenyl ring includes 1,2- and 1,3-substituted, and the tri-substituted 1,2-, 3- and 1,2,4-substituted. including.
- a transition metal compound obtained by replacing the zirconium metal with a titanium metal or a hafnium metal in the zirconium compound as described above can be used.
- transition metal compounds represented by the general formula (I) bis ( ⁇ -propylcyclopentagenyl) zirconium dichloride and bis ( ⁇ -butylcyclopentagenyl) zirconium dichloride Lido, bis (1-methyl-3- ⁇ -provircyclopentagen) zirconium dichloride, bis (1-methyl-3- ⁇ -butylcyclopentagen) zirconia dichloride Is particularly preferred.
- ⁇ is a transition metal atom selected from Group 4 of the periodic table, specifically, zirconium, titanium, or hafnium, preferably zirconium.
- L 2 is a ligand coordinated to the transition metal atom M, and at least two of these ligands L 2 are methylcyclopentagenenyl groups or ethylcyclopentagenenyl groups. Groups, each of which may be the same or different.
- the ligand L 2 other than the methyl-opening pentagenyl group or the ethyl-opening pentagenyl group coordinated to the transition metal atom M is represented by the above general formula (II).
- L 1 and similar hydrocarbon group having a carbon number of 1 to 2 in (I) alkoxy key sheet group, ⁇ Li one proxy group, preparative real Kirushi Li group, a halogen atom or a hydrogen atom.
- transition metal compound represented by the general formula (II) examples include bis (methylcyclopentenyl) zirconium dichloride and bis (ethylcyclopentenyl) zirconium dimethyl chloride. Lido, bis (methylcyclopentenegen) zirconium dibromide, bis (ethylchlorpentenegen) zirconium dibromide, bis (methylcyclopentenegen) zirconium methoxycyclo Lido, bis (ethylcyclopentagenenyl) zirconium methoxide chloride, bis (methylcyclopentenyl) zirconium methoxychloride, bis (ethylcyclopentanenyl) zirconium methoxy Xychloride, bis (methylcyclopentenyl) zirconium Ethoxide, bis (ethylcyclopentenegen) zirconium jetoxide, bis (methylcyclopentenegen) zirconium methyl chloride, bis (ethylcyclopen
- (Ethylcyclopentenyl) Zirconium Benzyl Chloride Bis (Methylcyclopentenyl) Zirconium Dibenzil, Bis (Ethylcycl) Lenta genil) Zirconium dibenzil, Bis (methyl cyclene evening genil) Zirconium umfenyl chloride, Bis (ethyl cyclopenta) Genil) zirconium humenyl chloride, bis (methylcyclopentene genil) zirconium umnoyl hydridide lid, bis (ethyl cyclopenta) Genir) Zirconium umide hydride chloride.
- a transition metal compound obtained by replacing the zirconium metal with a titanium metal or a hafnium metal in the zirconium compound as described above can be used.
- transition metal compounds represented by the general formula (II) bis (methylcyclopentenyl) zirconium dichloride and bis (ethylcyclopentane) (Tagenil) Zirconium chloride power ⁇ Particularly preferred.
- a combination method under the same polymerization conditions, a olefin obtained from a catalyst component containing only the transition metal compound represented by the general formula (I) as the transition metal compound component is used. It contains the MFR (MFR (I)) of the polymer and only the transition metal compound represented by the general formula (II) as a transition metal compound component. It is preferable that the ratio of MFR (MFR (II)) of the olefin polymer obtained from the catalyst component be MFR (I) / MFR (II) ⁇ 20 .
- a combination of genil) zirconium dichloride and bis (methylcyclopentanenyl) zirconium dichloride is preferred.
- At least one transition metal compound (bI) selected from the transition metal compounds represented by the above general formula (I) and at least one transition metal compound selected from the transition metal compounds represented by the above general formula (II) A single transition metal compound (b-II) is defined as having a molar ratio (b-I / b-II) of 99 Zl to 40/60, preferably 95/5 to 45. It is used in an amount such that Z 55, more preferably 90 to 10 to 50, Z 50, most preferably 85/15 to 55/45. This is desirable.
- transition metal compound catalyst component containing at least one of them is sometimes referred to as “component (b)”.
- the catalyst for olefin polymerization includes the above-mentioned organic aluminum methoxy compound (a), the transition metal compound (b-1) and the transition metal compound (b-II).
- the organic aluminum oxide compound (a), the transition metal compound (b-1), and the transition metal compound (b-II) are supported on a carrier (C) as described below.
- the carrier used as necessary.
- the carrier is an inorganic or organic compound, and has a particle diameter of from 10 to 300, preferably from 20 to 200 m. Granules or fine solids are used. Is an Of this Chi inorganic compound rather to preferred porous oxides, specifically S i 0, A 1 2 0 ,
- S ⁇ 0 2 and A 1 2 arbitrariness also preferable is composed mainly of one component 0 selected from the group consisting of low Na rather as among these.
- the above inorganic the oxide small amount of N a 2 C 0 3, K 2 C 0 3, C a C 0 3, M g C 0 3, N a 2 S ⁇ 4, A 1 2 (S 0 4) 3, B a SO "KN_ ⁇ 3, M g (N 0 3 ) 2, a 1 (NO 3) 3, N a 2 0, K 2 0, carbonates such as L i 2 0, sulfate, nitrate,
- a carrier (c) has different properties depending on the type and production method, and the carrier preferably used has a specific surface area of 50 to 1.
- the carrier is used after being calcined at 100 to 100 ° C., preferably 150 to 700 ° C. if necessary.
- Less than 1.0% by weight, preferably Is preferably less than 0.5% by weight, and the surface hydroxyl groups are more than 1.0% by weight, preferably 1.5 to 4.0% by weight, particularly preferably 2.0 to 2.0% by weight. Preferably it is 3.5% by weight.
- the amount of adsorbed water (% by weight) and the amount of surface hydroxyl groups (% by weight) of the carrier (c) are determined as follows.
- the percentage of the weight loss before drying at 200 ° C. under normal pressure and nitrogen flow for 4 hours is defined as the amount of adsorbed water.
- the weight of the carrier obtained by drying at a temperature of 22 00 00 ° C. under a normal pressure under a flow of nitrogen for 4 hours is defined as X (g).
- the weight of the calcined product obtained by calcining at 20 ° C. for 20 hours and having no surface hydroxyl groups is calculated as Y (g) by the following equation.
- the carrier (c) that can be used in the present invention
- a granular or fine solid of an organic compound having a particle size in the range of 10 to 300 zm can be mentioned.
- organic compounds include ⁇ -olefins having 2 to 14 carbon atoms, such as ethylene, propylene, 1-butene, and 4-methyl-1-pentene.
- Examples of (co) polymers or vinylcyclohexanes produced mainly with styrene and polymers or copolymers produced mainly with styrene are given below. Can be done.
- organic aluminum compound (d) may be used as a component for forming the olefin polymerization catalysts (Cat-1) and (Cat-2) as necessary. Can be used.
- organic aluminum compound (d) may be used as a component for forming the olefin polymerization catalysts (Cat-1) and (Cat-2) as necessary. Can be used.
- component (d) organic aluminum compound used as necessary, for example, an organic aluminum compound represented by the following general formula (i) An example is a minium compound.
- R 1 is a hydrocarbon group having 1 to 12 carbon atoms
- X is a halogen atom or a hydrogen atom
- n is 1 to 3.
- R 1 is a hydrocarbon group having 1 to 12 carbon atoms, for example, an alkyl group, a cycloalkyl group or an aryl group, and specifically, a methyl group, Ethyl group, n-propyl group, isopropyl group, isobutyl group, pentyl group, hexyl group, octyl group, cyclopentyl group, cyclohexyl group, It is an enyl group or a tolyl group.
- organic aluminum compound (d) examples include the following compounds.
- organic aluminum compound (d) a compound represented by the following general formula (ii) can also be used.
- R 1 Ri similar der the above, Y an OR 2 group, - OS i R 3 3 group, - ⁇ A 1 R 4 2 group, one NR 5 2 group, one S i R 6 3 Group or one N (R 7 )
- a 1 R 2 group, n is 1 to 2
- R 2 , R 3 , R 4 and R s are methyl group, ethyl group
- R 5 is a hydrogen atom, a methyl group, a ethyl group, an isopropyl group, a phenyl group, a trimethyl group, such as a pill group, an isobutyl group, a cyclohexyl group, and a phenyl group.
- R 6 and R 7 are a methyl group, an ethyl group, and the like.
- Specific examples of such an organic aluminum compound include: The following compounds are mentioned.
- R '"A 1 (S i R 6 3) 3-" compounds represented by, for example, (iso - B u) such as 2 AIS i M e 3;
- the catalyst for olefin polymerization (Cat-1) is formed from the above components (a) and (b) and, if necessary, component (d).
- the polymerization catalyst (Cat-2) (the solid catalyst (Cat-2)) is a component as described above) and a solid catalyst (component) in which the component (b) is supported on a carrier (c). And, if necessary, component (d).
- the force (component (a)) that can be prepared by mixing and contacting each catalyst component inside or outside the polymerization vessel, the component (a) can be used.
- the component (b) is mixed and contacted to form a solid catalyst, or the component (a) and the component (b) are previously mixed and contacted to form a solid catalyst.
- the solid catalyst can be added to the polymerization system.
- the catalyst for olefin polymerization (Cat-1) is a component in an inert hydrocarbon solvent.
- component (b) It can be formed by mixing and contacting (a), component (b), and if necessary, component (d).
- the order of contact of each component is arbitrarily selected, but when component (b) is mixed with component (b), it is preferable to add component (b) to the suspension of component (a).
- the component (b) is prepared by preliminarily mixing two or more transition metal compounds (components (bI) and (b-II)) forming the component (b), and then bringing into contact with other components. This is preferred.
- inert hydrocarbon solvent used in the preparation of the catalyst for the polymerization of olefin include proton, butane, pentane, hexane, heptane, and Aliphatic hydrocarbons such as octane, decane, dodecane and kerosene; alicyclic hydrocarbons such as cyclopentane, cyclohexane and methylcyclopentane; benzene, Aromatic hydrocarbons such as ruene and xylene; halogenated hydrocarbons such as ethylene chloride, chlorobenzene, and dichloromethane; and mixtures thereof. .
- the concentration of the component) is about 0. It is in the range of 1 to 5 moles Z liter (solvent), preferably 0.3 to 3 moles / liter (solvent).
- the atomic ratio (A 1 Z transition metal) to the transition metal in (b) is usually from 10 to 500, preferably from 20 to 200.
- the atomic ratio (A i-d / A a) of (A 1-a) is usually in the range of 0.023, preferably 0.0551.5.
- the mixing temperature at the time of mixing and contacting the component (a), the component (b) and, if necessary, the component (d) is usually 150 to 150, preferably _20 to: L 2 0 ° C and the contact time is between 1 minute and 50 hours, preferably between 10 minutes and 25 hours.
- the solid catalyst (Cat-2) is prepared by supporting component (a) and component (b) as described above and, if necessary, component (d) on a carrier (c). be able to. '
- the order of contact of component), component (b), carrier (c) and component (d) in preparing the solid catalyst (Cat-2) is arbitrarily selected, and is preferably The carrier (c) is brought into mixed contact with, then the component (b) is brought into mixed contact, and if necessary, the component (d) is brought into mixed contact.
- Component (b) is prepared by mixing two or more transition metal compounds forming component (b), components (b-1) and (b-II)) in advance, and then bringing them into contact with other components. Is preferred.
- the contact of the component (a), the component (b), the carrier (c) and the component (d) can be carried out in an inert hydrocarbon solvent, and the inert hydrocarbon solvent used for preparing the catalyst is used.
- the inert hydrocarbon solvent used in the preparation of the above-mentioned catalyst for olefin polymerization (Cat-1) may be mentioned. -31-
- the component (b) is a transition metal atom per 1 g of the carrier (c).
- the concentration of the component (b) is , about 1 0 - in the range of 4 ⁇ 2 X 1 0 one 2 mol / Li tool preparative Le (solvent), favored by rather is 2 X 1 0 one quarter to one 0 one 2 moles Z Li tool preparative Le (solvent) is there.
- the atomic ratio (A 1 / transition metal) between the aluminum (A ⁇ ) in component (a) and the transition metal in component (b) is usually 10 to 500, preferably 2 0 to 200.
- the atomic ratio of the aluminum atom (A d) in component (d) and the aluminum atom (A 1-a) in component (a) (A 1-d / A 1-a ) Usually ranges from 0.02 to 3, preferably from 0.05 to 1.5.
- the mixing temperature for mixing and contacting the component (a), the component (b), the carrier (c) and, if necessary, the component (d) is usually from 50 to 150 t :, preferably 1 to 2.
- the temperature is 0 to 120 ° C, and the contact time is 1 minute to 50 hours, preferably 10 minutes to 25 hours.
- the above-described catalyst for olefin polymerization may be a prepolymerization catalyst in which olefin is preliminarily polymerized.
- the prepolymerized catalyst is prepared in the presence of the component (a), the component (b) and the carrier (c). It can be prepared by introducing olefin into an inert hydrocarbon solvent and performing prepolymerization.
- the solid catalyst component (Cat-2) is formed from the above component), the component (b) and the carrier (c). In this case, component (a) and / or component (d) may be added in addition to the solid catalyst component (Cat-2).
- the olefin may be introduced into a suspension prepared from the solid catalyst (Cat-2) (solid catalyst component) described above, or the solid catalyst (Cat-2) may be prepared. Thereafter, the formed solid catalyst (Cat-2) is separated from the suspension, and then the solid catalyst (Cat-2) is suspended again with an inert hydrocarbon, and the olefin is introduced there. May be.
- component (b) in terms of transition metal atom in the component (b) Normal 1 0 _6 ⁇ 2 XI 0- 2 mol / l (Solvent ), rather then like are used in an amount of 5 X 1 0- 5 ⁇ 1 0 2 mole Z l (solvent), component (b) carrier (c) 1 g equivalent is, in terms of the transition metal atom to usually 5 X 1 0 - 6 ⁇ 5 X 1 0 one 4 mol, preferred is rather used in an amount of 1 0 one 5 ⁇ 2 X 1 0 _ 4 mol.
- the atomic ratio (A1Z transition metal) between the aluminum in component (a) and the transition metal in component (b) is usually from 10 to 500, preferably from 20 to 2 It is 0 0.
- the atomic ratio (A 1-d) of the aluminum atom (Al-d) in component (d) and the aluminum atom (A-a) in component (a) used as necessary / A 1-a) is usually in the range from 0.02 to 3, preferably from 0.05 to 1.5.
- the solid catalyst component is usually 10 — 6 to 2 X 10 — 2 mol / liter (solvent), preferably 5 X 10 — 5 to 10 as transition metal in the transition metal compound. Used in an amount of 12 moles / liter (solvent).
- the prepolymerization temperature is from 120 to 80 ° C, preferably from 0 to 60 ° C, and the prepolymerization time is from 0.5 to 100 hours, preferably from 1 to 50 hours. It is moderate.
- Examples of the olefin used in the prepolymerization include ethylene and a olefin having 3 to 20 carbon atoms, for example, propylene, 1-butene, 1-butane.
- Examples include pentene, 4-methyl-1-pentene, 1-hexene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, etc. You. Among these, a combination of ethylene or ethylene and an olefin used in the polymerization is particularly preferred.
- the prepolymerization catalyst is prepared, for example, as follows. That is, the carrier is suspended in an inert hydrocarbon. Next, an organic aluminum compound (component)) is added to the suspension and reacted for a predetermined time. Thereafter, the supernatant is removed, and the obtained solid component is resuspended with an inert hydrocarbon. After adding a transition metal compound (component (b)) to the system and reacting for a predetermined time, the supernatant is removed to obtain a solid catalyst component. Subsequently, the solid catalyst component obtained above is added to an inert hydrocarbon containing an organic aluminum compound (component (d)), and the olefin is introduced there. Thus, a prepolymerized catalyst is obtained.
- the formed olefin polymer is 0.1 to 500 g per 1 g of the carrier (c), preferably 0.2 to 300 g, more preferably
- the amount is 0.5 to 200 g.
- a carrier (c) 1 g equivalent Ri component (b) is about 5 X 1 0- 6 ⁇ 5 X 1 0- 4 mol in terms of transition metal atom, is rather to preferred 1 0
- a carrier (c) 1 g equivalent Ri component (b) is about 5 X 1 0- 6 ⁇ 5 X 1 0- 4 mol in terms of transition metal atom, is rather to preferred 1 0
- the atom (A i) is a molar ratio (A 1 ZM) to the transition metal atom (M) in the component (b) of 5 to 200, preferably 10 to 150. It is desirable that the carrier be supported in an amount in the range described above.
- the prepolymerization can be performed either in a batch system or a continuous system, and can be performed under reduced pressure, normal pressure or under pressure.
- the intrinsic viscosity [] measured in decalin at least at 135 ° C in the presence of hydrogen is in the range of 0.2 to 7 d1 Zg, preferably It is desirable to produce a prepolymer having a 0.5 to 5 d IZ g.
- the copolymerization of ethylene and ⁇ -olefin is carried out in the gas phase or in a slurry-like liquid phase in the presence of the above-mentioned catalyst for the polymerization of ethylene, preferably in the form of a slurry. Done in phase.
- an inert hydrocarbon may be used as a solvent, or the olefin itself may be used as a solvent.
- inert hydrocarbon solvent used in the slurry polymerization include Prono.
- Aliphatic hydrocarbons such as butane, butane, isobutane, pentane, hexane, octane, decane, dodecane, hexadecan, and octadecane;
- cyclopentene Alicyclic hydrocarbons such as tan, methylcyclopentane, cyclohexane, and cyclooctane
- aromatic hydrocarbons such as benzene, toluene, and xylene
- Examples include petroleum fractions such as gasoline, kerosene, and diesel.
- the above Yo I Do catalyst as a concentration of the transition metal atom in the polymerization reaction system is usually 1 0 one 8 ⁇ 1 0 Morunori Tsu preparative Le, preferred and rather is 1 0-7 to 1 0 one 4 mol / Li Tsu DOO this and is desired arbitrary used in an amount of Le.
- the atomic ratio (A 1 ZM) between A 1) and the transition metal atom (M) in the transition metal compound (b) is 5 to 300, preferably 10 to 200, and more preferably. It is in the range of 15 to 150.
- component (b), carrier (c) and, if necessary, component (d), the organic polymerization catalyst supported on the carrier during polymerization In addition to the aluminum oxy compound (component (a)), an unsupported organic aluminum oxy compound may be used. In this case, the atomic ratio (A 1 ZM) between the aluminum atom (A 1) in the unsupported organic aluminum oxy compound and the transition metal atom (M) in the transition metal compound (b) Ranges from 5 to 300, preferably from 10 to 200, and more preferably from 15 to 150.
- the component (d) used as necessary may be supported on the carrier (c), or may be added during the polymerization. Further, the component (d) is supported on the carrier (c), and may be added during the polymerization.
- the component (d) supported on the carrier and the component (d) added during the polymerization may be the same or different.
- the atomic ratio (A ⁇ ZM) of the aluminum atom (A 1) in the component (d) and the transition metal atom (M) in the transition metal compound (b) used as required is 5 to 3 It is in the range of 0, preferably 10 to 200, more preferably 15 to 150.
- the polymerization temperature is usually from 50 to 1 0 ° C., preferably in the range of 0 to 90 ° C.
- the polymerization temperature is usually 0 to 120 ° (:, preferably Is in the range of 20 to 100.
- the polymerization pressure is usually normal pressure or 100 kg Zcm 2 , preferably 2 to 50 kg / cm 2 , and the polymerization is carried out in batch, semi-continuous or continuous. This can be done by either method.
- the olefin polymerization catalyst may contain other components useful for olefin polymerization in addition to the above components.
- Examples of the olefin that can be polymerized by such an olefin polymerization catalyst include ethylene and an olefin having 6 to 8 carbon atoms.
- propylene for example, propylene, 1-butene, 1-pentene, 4-methyl-1_pentene, 1-decen, 1-dodecen, 1-tetra C-olefins such as decene, 1-hexadecene, 1-octadecen, ⁇ -coycosine; carbon number?
- cyclic olefins such as cyclopentene, cycloheptene, norbornane, 5-methyl-2-norbornane, tetracyclodecene, 2-methyl 1,4,5,8-dimethano-l, 2,3,4,4a, 5,8,8a-octahydronaphtalene.
- styrene, vinylcyclohexane, and gen may be used.
- the O Les off fin ethylene les emissions by Ri obtained in the polymerization process of 'alpha - O the constituent units derived from ethylene emissions are 5 0-1 0 0 wt 0/0 , preferred and rather is present 5 5-9 9 weight 0/0, yo Ri preferred to rather 6 5-9 8 wt%, rather the most preferred in an amount of 7 0-9 6 wt%, the number of carbon atoms 6-8 Fei - O and the constituent units derived from the record off fin 0-5 0 weight 0/0, Preferably it is present in an amount of from 1 to 45% by weight, more preferably from 2 to 35% by weight, most preferably from 4 to 30% by weight.
- the -olefin copolymer preferably has the characteristics described in (A-i) to (A-iii) above, has excellent moldability, and has excellent transparency and mechanical strength. Excellent film can be manufactured.
- Ethylene. ⁇ -olefin copolymer ( ⁇ ) Ethylene.olefin copolymer ( ⁇ ) is composed of ethylene and «-olefin with 6 to 8 carbon atoms. It is a random copolymer with Ind. Examples of the ⁇ -olefin having 6 to 8 carbon atoms include the same ones as described above.
- the constituent unit derived from ethylene is 50 to 100% by weight, preferably 55 to 9.9% by weight, and more preferably.
- Ku 6 5-9 8 weight 0/0 rather the most preferred is present in an amount of 7 0-9 6 by weight 0/0
- alpha carbon atoms of 6 to 8 - constituent units derived from Orefu fin it exists is 0-5 0% by weight, preferred and rather 1-4 5 wt%, more and preferred rather 2-3 5 weight 0/0, the rather particular preferred from 4 to 3 0% by weight This is desirable.
- the ethylene / ⁇ -olefin copolymer ( ⁇ ) preferably has the following properties ( ⁇ -i) to (B-vii). -It is particularly preferable to have the characteristics shown in (i) to (B-viii).
- Density (d) are, 0. 8 8 0 ⁇ 0. 9 7 0 g Zcm 3, is preferred to rather 0.8 8 0 to 0.9 6 0 2 (: 111 3, preferred Ri Yo It is in the range from 0.890 to 0.935 g / cm 3 , most preferably from 0.905 to 0.930 g Zcm 3 .
- Melt flow rate (MFR) is 0.02 to 200 g Z It is in the range of 10 minutes, preferably 0.05 to 50 g ZlO, more preferably 0.1 to 10 g / 10 minutes.
- Ethylene olefin copolymers having such properties have high melt tension ( ⁇ ⁇ ) and therefore have good moldability.
- MwZM n The molecular weight distribution (MwZM n) was measured using GPC-150C manufactured by Millipore as follows.
- the separation column is TSKGNHHT, the column size is 72 mm in diameter and 600 mm in length, the column temperature is 140 ° C, and the mobile phase is 0 mm.
- Standard poly styrene Ren using one company manufactured Tosoh on the molecular weight M w ⁇ 1 0 0 0 and M w> 4 X 1 0 6 , pre-Tsu for 1 0 0 0 ⁇ M w ⁇ 4 XI 0 6
- the product was manufactured by Sha Chemical.
- the number of unsaturated bonds present in the molecule is 0.5 or less per 100,000 carbon atoms, and is less than 1 per molecule of polymer.
- the quantification of the unsaturated bond was performed using 13 C-NMR to determine the signal assigned to the non-double bond, that is, the signal in the range of 10 to 50 ppm, and the signal assigned to the double bond. That is, the area intensity of the signal in the range of 150 to 150 ppm is determined from the integral curve, and the ratio is determined from the ratio.
- the ethylene- ⁇ -olefin copolymer ( ⁇ ) includes, for example,) an organic aluminum oxy compound, and (b-II) a transition metal compound represented by the general formula (II). It can be obtained by copolymerizing ethylene and a non-olefin having 6 to 8 carbon atoms in the presence of an orphan polymerization catalyst. (a) the organic aluminum oxy compound and (b-II) the transition metal compound The ethylene Les emission alpha -. The same preparative O Les off fin copolymer also described in preparation of (Alpha). As in the above case, the carrier (c) and the organoaluminum compound (d) may be used, or prepolymerization may be performed. The amount of each component used, the pre-polymerization conditions and the main polymerization conditions are the same as in the case of the production of the ethylene / ⁇ - olefin copolymer ( ⁇ ).
- the ethylene-hyperolefin copolymer (C) is a random copolymer with a hexaolefin having 6 to 8 carbon atoms.
- Examples of the C 6 -C 8 olefin include the same ones as described above.
- the constituent units derived from ethylene are preferably 50 to 100% by weight, more preferably 55 to 99% by weight. and rather 6 5-9 8 wt%, rather the most preferred is present in an amount of 7 0-9 6 by weight 0/0, alpha carbon atoms 6-8 - structure derived from O Les off fin there units 0-5 0% by weight, preferred and rather 1-4 5 wt%, rather then preferred Ri yo 2-3 5 weight 0/0, the rather particular preferred in an amount of from 4 to 3 0 wt% It is desirable to do it.
- the -olefin copolymer (C) preferably has the following properties (C-i) to (C-V). It is particularly preferable to have characteristics as shown in (C-vi).
- Density (d) are, 0 8 8 0 0 9 7 0 g / cm 3, and preferred rather are 0.8 8 0 0 9 6 0 8 da (:... 111 3, Yo More preferably, it is in the range of 0.890 to 0.935 g / cm 3 , most preferably in the range of 0.905 to 0.930 g / cm 3 .
- Melt rate (MFR) is 0.02 to 200 g / It is in the range of 10 minutes, preferably 0.05 to 50 g 10 minutes, more preferably 0.1 to 10 g / 10 minutes.
- T m ⁇ 450 X d — 2 9 6
- Such an ethylene- ⁇ -refined copolymer (C) is, for example, (a) an organic aluminum oxy compound, (b-1) represented by the general formula (I). It can be obtained by copolymerizing ethylene and an olefin having 6 to 8 carbon atoms in the presence of an olefin polymerization catalyst containing a transition metal compound.
- the (a) organic aluminum methoxy compound and the (b-I) transition metal compound are the same as those described in the method for producing the ethylene ′ ⁇ -olefin copolymer (A).
- the carrier (c) and the organic aluminum compound (d) may be used, or prepolymerization may be performed.
- the amount of each component used, the prepolymerization conditions, and the main polymerization conditions are the same as in the case of the production of the ethylene / ⁇ -olefin copolymer ( ⁇ ).
- High-pressure radial low-density polyethylene is a highly branched polyethylene having a long chain branch produced by so-called high-pressure radical polymerization.
- the MFR measured at 190 ° C and 2.16 kg load according to 65 T is 0.1 to 50 g / 10 min, preferably 0.2 to 10 g ZLO, More preferably, it is in the range of 0.2 to 8 g / 10 min.
- This high-pressure radial low-density polystyrene is a molecular weight distribution measured using gel permeation chromatography (GPC).
- GPC gel permeation chromatography
- Mw weight average molecular weight
- Mn number average molecular weight
- MFR Melt-to-mouth ratio
- the method for measuring the molecular weight distribution of the low-density polyethylene by the high-pressure radical method is the same as described above.
- high pressure la dicaprate Le low density po Re ethylene les down are arbitrary desired and this density is in the range of 0. 9 1 0 ⁇ - 0. 9 3 0 g / cm 3.
- the density was determined by measuring the strand obtained when measuring the melt flow rate under a load of 2.16 kg at 190 ° C and heat-treating the strand at 120 ° C for 1 hour. After slowly cooling to room temperature, it is measured with a density gradient tube.
- the high-pressure radial low-density polyethylene is obtained by using a steel ratio that indicates the degree of long-chain branching, that is, by using a capillary flow property tester, under the conditions of 190 D)
- the ratio of the diameter (D s) of the strand extruded from a 2.0 mm, 15 mm long nozzle at an extrusion speed l O mmZ to the nozzle inner diameter D ( Ds / D) Power It is desirable that it be 1.3 or more.
- the high-pressure, low-density polyethylene produced by a low-density polyethylene method is not limited as long as the object of the present invention is not impaired. It may be a copolymer with a polymerizable monomer such as one-year-old resin, vinyl acetate, or acrylate.
- Ethylene copolymer composition The ethylene-based copolymer composition (A) according to the present invention is obtained by combining the above-mentioned ethylene « « -brown refin copolymer (A) with a high-pressure radial low-density copolymer. It consists of polyethylene (E).
- the composition ratio of the ethylene copolymer composition (A) consisting of the one-year-old olefin copolymer (A) and the high-pressure radial low-density polyethylene (E) is as follows.
- the ethylene ′′ -olefin copolymer (A) is usually 99 to 60% by weight, preferably 99 to 80% by weight, more preferably Ku is included in a ratio of 9 9-9 0% by weight
- the high pressure la dicaprate Le method less dense Dopo re ethylene les emissions (E) is usually 1-4 0 weight 0/0, the preferred and rather 1-2 0 by weight 0/0, rather then preferred Ri yo 1 to 1 0 weight 0/0 this and the desired arbitrary contained in a proportion of. 'this yo I
- Do ethylene les emissions copolymer composition (a) It can be manufactured by using a known method, and for example, can be manufactured by the following method.
- Ethylene- ⁇ -aged olefin copolymer ( ⁇ ), high-pressure radial low-density polyethylene ( ⁇ ), and other optional components A method of mechanically blending using an extruder, a die, etc.
- a method of dissolving in a good solvent for example; hydrocarbon solvent such as hexane, heptane, decane, cyclohexane, benzene, toluene and xylene), and then removing the solvent.
- Ethylene ' ⁇ -olefin copolymer ( ⁇ ), high-pressure radial low-density polyethylene ( ⁇ ), and other components added as desired.
- ⁇ Ethylene ' ⁇ -olefin copolymer
- ⁇ high-pressure radial low-density polyethylene
- other components added as desired.
- the ethylene-based copolymer composition (′) according to another embodiment of the present invention comprises the above-mentioned ethylene-olefin copolymer ( ⁇ ), and the ethylene-olefin copolymer ( ⁇ ). It consists of an ethylene copolymer (C) and a high-pressure radical method low-density polyethylene (II)
- the composition of the ethylene copolymer composition ( ⁇ ⁇ '), which is composed of (a) and (c), is not particularly limited, and the ethylene. ⁇ -olefin copolymer ( ⁇ ) and (C) Is a total amount, usually contained in a proportion of 99 to 60% by weight, preferably 99 to 80% by weight, more preferably 99 to 90% by weight, and (9) high pressure Radical low density polyethylene is usually present in a proportion of 1 to 40% by weight, preferably 1 to 20% by weight, more preferably 1 to 10% by weight.
- ethylene-les-down "-. O-les-off fin copolymer ( ⁇ ) your good beauty (C) is the ( ⁇ ) and the total amount of (C) and 1 0 0 weight 0/0 Te
- ethylene Les down-'- O Lev fin copolymer (beta) is 1-9 0 weight 0/0, and preferred rather is included in an amount of 2-8 0% by weight
- ethylene Les down-alpha - O Les off fin copolymer (C) is 1 0-9 9 weight 0/0, preferred and rather is 2 0-9 8 wt% of an amount this and is desired arbitrary.
- Such an ethylene copolymer composition ( ⁇ ') can be produced by using a known method. For example, it can be produced by the following method. .
- Ethylene The olefin copolymers (B) and (C), the high-pressure radial low-density polyethylene (E), and other components to be added as required are suitably mixed. A method in which solutions separately dissolved in a solvent are prepared, mixed, and then the solvent is removed.
- a composition (F) is formed from ethylene (a) one-year-old olefin copolymers (B) and (C), and then the composition (F) and a high-pressure radial method are used. From the low-density polyethylene (E), the ethylene copolymer composition ( ⁇ ') can be produced by the known method as described above.
- composition (F) composed of the ethylene-na-olefin copolymer ( ⁇ ) and the ethylene-na-olefin copolymer (C) is composed of ethylene ⁇ — Melt flow (MFR (B)) of ethylene copolymer ( ⁇ ) and melt flow of ethylene (olefin) copolymer (C) ⁇ Rate (MFR (C))
- the ethylene '"-olefin copolymer (B) It is desirable that both (C) and (C) be ethylene'hexene-1 copolymers.
- composition (F) having such characteristics has a high melt tension (MT), and thus has good moldability.
- composition (F) composed of the ethylene / ⁇ -olefin copolymers (B) and (C) satisfying such requirements has high moldability and transparency of the obtained film. Excellent in nature.
- composition (F) comprising the ethylene / ⁇ -olefin copolymer (I) and () preferably satisfies the following requirements in addition to the above requirements.
- the constituent unit derived from ethylene is 50 to 100% by weight, preferably 55 to 99% by weight, more preferably 65 to 9% by weight. 8 weight 0/0, rather the most preferred is present in an amount of 7 0-9 6 wt%, of the carbon atoms 6-8 Do - guide from 1 - xenon emission O Les off fin, to be rather the preferred
- the constituent units are present in an amount of from 0 to 50% by weight, preferably from 1 to 45% by weight, more preferably from 2 to 35% by weight, particularly preferably from 4 to 30% by weight. It is desirable to do it.
- Density of the composition (F) (d) is, 0. 8 8 0 ⁇ 0 9 7 0 g / cm 3, 0 is rather to preferred '8 8 0 to 0.9 6 0 8 / (:.. 111 3 , and a this Yo Ri is preferred rather than the 0. 8 9 0 ⁇ 0. 9 3 5 g / cm 3, is rather the most preferred in the 0.9 0 5 to 0.9 3 0 range of g / cm 3 Desirable.
- the melt flow rate (MFR) of the composition (F) is from 0.05 to 200 g ZlO, preferably from 0.08 to 50 g / 10 min, and more. Preferably it is in the range of 0.1 to 10 g Z 10 minutes.
- composition (F) composed of the ethylene / 0 -olefin copolymer (B) and the ethylene / olefin copolymer (C) can be prepared by a known method. It can be manufactured, for example, by the following method.
- Ethylen'-olefin copolymer ( ⁇ ), ethylene- ⁇ -olefin copolymer (C), and other components added as desired Is mechanically blended or melt-mixed using a tumbler, an extruder, a die, or the like.
- a good solvent for example; hydrocarbon solvent such as hexane, heptane, decane, cyclohexane, benzene, toluene and xylene
- removing the solvent for example; hydrocarbon solvent such as hexane, heptane, decane, cyclohexane, benzene, toluene and xylene
- Ethylene ' ⁇ -olefin copolymer (B), Ethylene' ⁇ -olefin copolymer (C), and other components added as desired A method in which solutions that are separately dissolved in an appropriate good solvent are prepared, mixed, and then the solvent is removed.
- the ethylene-based copolymer composition (A) and the ethylene-based copolymer composition ( ⁇ ') according to the present invention both have excellent moldability. It can produce films with excellent transparency and mechanical strength, but also-other polymers, preferably ethylene.
- an ethylene copolymer composition ( ⁇ ) and another ethylene copolymer for example, an ethylene copolymer composition ( ⁇ ) and another ethylene copolymer.
- Styrene-based copolymer composition ( ⁇ ')) a composition of an ethylene-based copolymer composition ( ⁇ ') and another ethylene-olefin copolymer (ethylene-copolymer).
- the copolymer can be used as a copolymer composition (A ′ ′′ ′)). Such other ethylene '.
- an ethylene-"-olefin copolymer (D) described below is particularly preferably used.
- the ethylene / ⁇ -olefin copolymer (D) used in the present invention is a random copolymer of ethylene and ⁇ -olefin having 3 to 20 carbon atoms. It is a polymer.
- Examples of ⁇ -year-old olefins having 3 to 20 carbon atoms used for copolymerization with ethylene include propylene, 1-butene, 1-pentene and 1- Xen, 4-methyl-1-pentene, 1-octene, 1-decen, 1-dodecane , 1-tetradecane, 1-hexadecene, 1-octadecene, 1-eicosene, and the like.
- the structural units derived from ethylene are 50 to 100% by weight, preferably 50 to 99% by weight, more preferably 50 to 99% by weight. Or from 65 to 98% by weight, most preferably from 70 to 96% by weight, and the structural unit derived from the ⁇ -olefin having 3 to 20 carbon atoms is 0 to 50% by weight, preferably 1 to 45% by weight, more preferably 2 to 35% by weight, and most preferably 4 to 30% by weight. Is desirable.
- Such an ethylene-olefin copolymer (D) preferably has the following properties (D-i) and (D-ii). Further, it is more preferable to have the following characteristics (D-i) to (D-iv). (D -).... Density (d) are, 0 8 5 0 ⁇ 0 9 8 0 g Zcm 3, 0 and rather the preferred 9 1 0 ⁇ 0 9 6 0 g Zcm 3, good Ri preferred to rather is 0. 9 1 5 ⁇ 0. 9 5 5 g / cm, most also favored rather is zero. 9 2 0 to 0.9 5 0 range of g / cm 3.
- D-iii a differential scanning calorimeter (DSC) in the measurement using the temperature you Keru maximum peak position in an endothermic curve (T m C)) and the density (d (g / cm 3) ) and the force ⁇
- the relationship between the temperature (Tm) and the density (d) at the maximum peak position in the endothermic curve measured by the differential scanning calorimeter (DSC), and the amount of the n-decane soluble component It can be said that the ethylene-olefin copolymer (D) having the above relationship between the ratio (W) and the density (d) has a narrow composition distribution.
- ethylene-alpha - O Les off fin copolymer (Alpha) and ethylene - O les off fin copolymer (D) and identical in rather than also ethylene Le emissions' alpha - O Les off I Copolymers (I) and (C) and ethylene Not the same as -olefin copolymer (D).
- the ethylene-hydroolefin copolymer (D) and the ethylene ⁇ -olefin copolymers ( ⁇ ) to (C) have the following characteristics. Are distinguished.
- the ethylene- ⁇ -olefin copolymer (D) is a copolymer ( ⁇ ) It is a copolymer that does not satisfy at least one of the requirements (A-i) to (A-iii) that prescribe the following.
- ethylene ⁇ -olefin copolymer (D) has at least one of the requirements (B-iii) to (B-vii) that prescribes copolymer (B). It is a copolymer that does not meet the two requirements.
- the ethylene-olefin copolymer (D) is a copolymer that does not satisfy at least one of the requirements (C-iii) to (C-V) that define the copolymer (C).
- the ethylene-free-refining copolymer (D) includes ethylene.
- One of the preferred embodiments is that the intrinsic viscosity [7] measured in decalin at 135 ° C. and the density are lower than those of the -olefin copolymer.
- the ethylene-free olefin copolymer (D) includes ethylene.
- One of the preferred embodiments is a resin having a lower intrinsic viscosity [ ⁇ ] force measured in decalin and having a lower density than that of (-) and (C).
- Such an ethylene .alpha.-olefin copolymer (D) is, for example, (a) an organoaluminoxy compound, (b-III) a transition represented by the following general formula (III). It can be obtained by copolymerizing ethylene and olefin having 3 to 20 carbon atoms in the presence of an olefin polymerization catalyst containing a metal compound.
- the organic aluminum oxy compound is the same as that described in the method for producing the ethylene-olefin copolymer ( ⁇ ).
- the carrier (c) and the organic aluminum compound (d) may be used, or prepolymerization may be performed.
- the amounts of the components used, the prepolymerization conditions, and the main polymerization conditions are also the same as in the case of the production of the ethylene ⁇ -olefin copolymer (A).
- the transition metal compound (hereinafter sometimes referred to as “component (b-III)”) is particularly a transition metal compound belonging to Group 4 of the periodic table containing a ligand having a cyclopentagenyl skeleton. Although not limited, a transition metal compound represented by the following general formula (III) is preferable.
- M is a transition metal atom selected from Group 4 of the periodic table, and specifically, is zirconium, titanium, or zinc, and preferably zirconium. .
- X is the valence of the transition metal.
- L is a ligand that coordinates to the transition metal atom M, and at least one L : 1 is a ligand having a cyclopentagenyl skeleton;
- Examples of ligands having a tagenyl skeleton include cyclopentenyl group, methylcyclopentenyl group, dimethylcyclopentenyl group, and trimethylcyclopentene group.
- an alkyl-substituted cyclopentagenenyl group is particularly preferred.
- the compound represented by the general formula (III) contains two or more ligands having a cyclopentagenenyl skeleton
- two of the ligands having a cyclopentagenenyl skeleton are combined with each other.
- a substituted alkylene group such as ethylene, propylene, etc.
- a substituted alkylene group such as isopropylidene, diphenylmethylene, a silylene group or a dimethylsilylene group
- It may be bonded via a substituted silylene group such as a diphenylsilylene group or a methylphenylsilylene group.
- L 3 other than the ligand having a cyclopentagenenyl skeleton is a hydrocarbon group having 1 to 12 carbon atoms, similar to L 1 in the general formula (I). , alkoxy group, ⁇ Li one proxy group, Application Benefits Arukirushi Li group, a halogen atom, a hydrogen atom, or the S ⁇ 3 R group (provided that R is carbon atoms which may have a halogen such which substituents (Hydrocarbon groups of numbers 1 to 8).
- the ligand represented by S 0 3 R is, p Ichito toluene scan Ruhona preparative group, meta emissions Suruhona preparative group, etc. Application Benefits off Ruo ii main evening Nsuruhona preparative groups.
- the transition metal compound represented by the general formula (III) is more specifically represented by the following general formula (11 ().
- R 3 , R 4 and R 5 are groups having a cyclopentagenyl skeleton, an alkyl group, a cycloalkyl group, an aryl group, or an aryl group.
- alkyl group, Al co alkoxy group, ⁇ Li one b alkoxy group, Application Benefits Arukirushi Li Le group, S 0 3 R group, Ri Oh halogen atom or a hydrogen atom, k is Ri 1 or more integer der, k + l + m + n 4 )
- a metasene compound in which R 3 is a group (ligand) having a cyclopentenyl skeleton is preferably used.
- These groups having a cyclopentagenenyl skeleton include alkylene groups such as ethylene and propylene, substituted alkylene groups such as isopropylidene and diphenylmethylene, and silylene groups.
- the other ligands are a group having a cyclopentagenyl skeleton, an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group. group, alkoxy group, ⁇ Li straight alkoxy group, Application Benefits Arukirushi Li group, an S 0 3 R, Nono b Gen atom or a hydrogen atom.
- transition metal compound represented by the general formula (III) examples include bis (indenyl) zirconium dichloride, bis (indenyl) zirconium dibromide, and bis (indenyl) zirconium dibromide.
- Alkyl groups such as propyl and butyl include isomers such as n-, i-, sec- and tert-.
- zirconium compound as described above a compound in which zirconium is replaced by titanium or hafnium may be used.
- the transition metal compound represented by the above general formula (III) may be the same as the above general formula (I) ))
- transition metal compound (b-II) represented by the general formula (II) may be used.
- the ethylene- ⁇ -olefin copolymer (D) is prepared by adding ethylene and an “-olefin having 3 to 20 carbon atoms in the presence of the above-mentioned catalyst for olefin polymerization. Can be produced by copolymerizing so that the obtained copolymer has a density of 0.850 to 0.980 g / cm 3 .
- the ethylene .alpha. -olefin copolymer (D) is the above-mentioned ethylene copolymer.
- composition of ethylene / ⁇ -olefin copolymer (D) and the above-mentioned ethylene copolymer composition ( ⁇ ) or ethylene copolymer composition ( ⁇ ') The product can be manufactured using the known method described above.
- the molded article according to the present invention is formed from the above-mentioned ethylene-based copolymer composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′′) or ( ⁇ ′′ ′).
- the molded article examples include a single-layer film, a multilayer film, an injection molded article, an extruded molded article, a fiber, a foam, and a sheath for electric wires, and more specifically, an agricultural film.
- Film single-layer, multi-layer
- impermeable sheet multi-layer film
- packaging film multi-layer film, stretch film, high-load packaging film
- multi-layer insulation film Films laminated film sealants, heavy packaging films, grain bags, fluid packaging vouchers, batch packaging packages, back-in box interior containers, medical containers, heat resistant Containers, fibers, foamed molded products, gaskets, extruded products, pipes, various injection molded products, sheaths for electric wires, etc.
- the agricultural film comprises the above-mentioned ethylene-based copolymer composition ( ⁇ ), ('), ('''') or ( ⁇ ''''), and if necessary, a conventionally known film.
- the agricultural film according to the invention has a thickness in the range from 3 to 30 m, preferably in the range from 7 to 20 m.
- the agricultural film is prepared from the ethylene copolymer composition (A), (A '), ( ⁇ ' ''> or ( ⁇ '' '), for example, by an infusion method, — Can be prepared by film forming by the die method Film forming by the infusion method can be used for the composition ( ⁇ ), ( ⁇ '), ( ⁇ ') or ( ⁇ ' '') is extruded through a slit die and expanded by a predetermined air flow.
- Such agricultural films have excellent adhesion to soil, that is, excellent flexibility, and also have excellent properties such as weather resistance, tensile properties, tear properties, impact resistance, and rigidity.
- As a multi-film mainly required to increase the soil temperature it is effectively used for open-field cultivation, tunnel cultivation, semi-forcing house cultivation, column-free cultivation for Kaloe cultivation, and early hori cultivation. You.
- Multi-layer agricultural film
- the agricultural multilayer film according to the present invention is a three-layer laminated film including an outer layer, an intermediate layer, and an inner layer.
- the outer layer constituting the multilayer film for agricultural use according to the present invention comprises the above-mentioned ethylene copolymer composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′ ⁇ or ( ⁇ ′ ′ ′)), an inorganic compound and It is formed from a composition containing a weather stabilizer and an antifogging agent as required.
- the outer layer consisting of this composition ( ⁇ ), ( ⁇ '), ( ⁇ ''') or ( ⁇ ''') -Since the temporal decrease in transmittance is extremely small, such an agricultural multilayer film having such an outer layer can be spread over a long period of time.
- the outer layer of the multilayer film can be made thinner, and the multilayer film can be made thinner.
- the film can be lightweight.
- Inorganic compounds used for forming the outer layer of the multilayer film include inorganic oxides and inorganic water containing at least one atom of Mg, Ca, Ai and Si which are effective as a heat insulator. Oxides, hydrotalcites, etc.
- M 2 + is Ri divalent metal ions O Ndea of M g, C a, or Z n
- Alpha [pi - is C 1 one, B r-, I -, N 0 3 2 -, C 1 0 4 , S 0 4 2 —, C ⁇ 2 2 —, S i ⁇ 3 2- , HP 0-, HB 0 3 2- , P 0 4 2 -etc.
- X is a numerical value that satisfies the condition 0 ⁇ x ⁇ 0.5
- n is a number that satisfies the condition 0 ⁇ m ⁇ 2]
- hydrosites such as a fired product thereof.
- nitrodrosites are preferable, and particularly, a fired product of the inorganic composite compound represented by the above formula is preferable.
- the inorganic compounds as described above can be used alone or in combination of two or more.
- the average particle size of the inorganic compound is preferably 10 m or less, preferably 5 m or less, and more preferably 3 m or less.
- the inorganic compound is preferably used in an amount of 1 to 20 parts by weight, based on 100 parts by weight of the composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' '' '). It is used in an amount of 1 to 18 parts by weight, more preferably 2 to 15 parts by weight.
- the inorganic compound is used in the above ratio when forming the outer layer of the multilayer film, a multilayer film having excellent heat retention can be obtained.
- the weather stabilizers used as needed when forming the outer layer of the multilayer film are roughly classified into UV absorbers and light stabilizers. Agriculture films with light stabilizers are thinner. It is effective and has a great effect of improving weather resistance.
- HALS hindered amine light stabilizers
- hindered amide stabilizer specifically, the following compounds are used.
- hindered amine light stabilizers can be used alone or in combination of two or more.
- Such a light stabilizer may be used in an amount of 0.005 to 5 parts by weight based on 100 parts by weight of the composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′′) or ( ⁇ ′′ ′). It is preferably used in the proportion of 0.05 to 2 parts by weight, more preferably 0.01 to 1 part by weight.
- Salicylic acid-based ultraviolet absorbers such as phenol salicylate, p-tert-butyl phenol salicylate, p-octyl perzil silicate;
- the UV absorber is preferably used in an amount of 0.005 to 5 parts by weight, based on 100 parts by weight of the composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' '). Or 0.05 to 2 parts by weight, and more preferably 0.01 to 1 part by weight.
- composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′ ′) or ( ⁇ ′ ′) is mixed with a conventionally known additive such as an anti-fogging agent, an antistatic agent and a heat stabilizer according to the present invention. It can be blended within a range that does not impair the purpose.
- an antifogging agent mainly composed of a partially esterified product of a polyhydric alcohol and a higher fatty acid having 12 to 24 carbon atoms (including a hydroxy fatty acid) is used. Used favorably.
- the intermediate layer constituting the multilayer film for agriculture according to the present invention comprises an ethylene-vinyl acetate copolymer, an inorganic compound, and, if necessary, an ethylene- ⁇ -alumina copolymer (A -1), formed from a composition containing a weathering stabilizer and an antifogging agent.
- a -1 ethylene- ⁇ -alumina copolymer
- the ethylene vinyl acetate copolymer used in the present invention has a vinyl acetate content of 2.0 to 30% by weight, preferably 3.0 to 25% by weight, and more preferably. Is in the range of 5.0 to 20% by weight.
- heat retention refers to the temperature inside the house (such as a house or a tunnel) that absorbs and reflects the radiation emitted at night from the earth whose temperature has risen by absorbing the solar heat during the day and rising at night. Temperature and ground temperature).
- the inorganic compound used for forming the intermediate layer of the multilayer film is the same as the inorganic compound used for forming the outer layer described above.
- the inorganic compound is used in an amount of 100 parts by weight based on a total amount of the ethylene / vinyl acetate copolymer and the ethylene / other-olefin copolymer (A-1) described later. It is used in an amount of 1 to 20 parts by weight, preferably 1 to 18 parts by weight, and more preferably 2 to 15 parts by weight.
- component ( ⁇ -1) is an optional component and may be 0 parts by weight.
- E Ji Les down-Do optionally used upon forming the intermediate layer of the multilayer off I Lum - O Les off fin copolymer (alpha-1) is ethylene Les down-alpha described above - O Les off fin ... Chi No copolymer (a), density 0 9 2 5 g / cm 3 or less, rather than to good or 0 8 8 0 0 9 2 0 ethylene les emissions of g / cm 3 '"- It is an olefin copolymer.
- the intermediate layer can be made thinner.
- the weathering stabilizers used as needed when forming the intermediate layer of the multilayer film are the ultraviolet absorbers and the light stabilizers used when forming the outer layer described above.
- the light stabilizer was prepared as follows.
- the total amount of the ethylene / "-olefin copolymer (A-1) and the ethylene / vinyl acetate copolymer was 100 parts by weight.
- the UV absorber is used in an amount of 0.1 parts by weight based on 100 parts by weight of the total amount of the ethylene / «-olefin copolymer (A-1) and the ethylene / vinyl acetate copolymer. It is used in an amount of 0.05 to 5 parts by weight, preferably 0.05 to 2 parts by weight, and more preferably 0.01 to 1 part by weight.
- the component ( ⁇ -1) is an optional component and may be 0 parts by weight.
- additives such as an anti-fogging agent, an anti-fog agent, an antistatic agent and a heat stabilizer to the ethylene / vinyl acetate copolymer for forming the intermediate layer within a range not to impair the purpose of the present invention. Can be blended.
- the antifogging agent As the antifogging agent, the above-mentioned polyhydric alcohol and the number of carbon atoms of 12 to 2 -7f-
- An antifogging agent mainly containing a partial esterified product composed of the higher fatty acid (including a hydroxy fatty acid) of No. 4 is preferably used.
- the antifogging agent is used in an amount of 100 parts by weight based on the total amount of the ethylene / "-olefin copolymer (A-1) and the ethylene / vinyl acetate copolymer. It is used in a proportion of 0.05 to 5 parts by weight, preferably 0.1 to 4 parts by weight, and more preferably 0.5 to 3 parts by weight, provided that the component (A-1) is Since it is an optional component, it may be 0 parts by weight.
- the inner layer constituting the agricultural multilayer film according to the present invention is formed from the composition (A), ( ⁇ ′), ( ⁇ ′′ ′) or ( ⁇ ′′ ′).
- An inorganic compound, a weather stabilizer and an anti-fogging agent can be added to the composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′ ′) or ( ⁇ ′ ′).
- the inorganic compound is used in an amount of 1 to 3 parts by weight with respect to 100 parts by weight of the total amount of the composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' '). It is used at the rate of
- the weather stabilizers used as necessary when forming the inner layer of the multilayer film are the above-mentioned ultraviolet absorbers and light stabilizers.
- the light stabilizer is preferably used in an amount of 0.05 to 5 parts by weight, preferably 100 to 5 parts by weight, per 100 parts by weight of the composition ( ⁇ ), ( ⁇ '), ( ⁇ '') or ( ⁇ ''). Is used in an amount of from 0.005 to 2 parts by weight, more preferably from 0.01 to 1 part by weight.
- the ultraviolet absorber is preferably used in an amount of 0.05 to 5 parts by weight, based on 100 parts by weight of the composition (A), ( ⁇ '), ( ⁇ '') or ( ⁇ ''). Or from 0.05 to 2 parts by weight, more preferably from 0.01 to 1 part by weight.
- composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' ') used for forming the inner layer of the multilayer film may be added to a conventionally known antifogging agent, antistatic agent, heat stable
- An additive such as an agent can be blended within a range that does not impair the purpose of the present invention.
- an antifogging agent mainly composed of a partial esterified product composed of the above-mentioned polyhydric alcohol and a higher fatty acid having 12 to 24 carbon atoms (including hydroxy fatty acid) is used. Used favorably.
- the antifogging agent is preferably used in an amount of 0.05 to 5 parts by weight, more preferably 100 to 5 parts by weight, based on 100 parts by weight of the above composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' ') Is used in a proportion of 0.1 to 3 parts by weight, more preferably 0.5 to 2 parts by weight.
- the agricultural multilayer film according to the present invention comprising the outer layer, the intermediate layer and the inner layer as described above has a thickness of the outer layer of usually 3 to 100 m, preferably 1 ⁇ / ⁇ ⁇ . More preferably in the range of 20 to 70 m, and the thickness of the intermediate layer is 10 to 150 ⁇ m, preferably 20 to 120 ⁇ m, and more. Preferably in the range of 30 to 100 m, inner layer thickness of 3 to 100, 01, preferably 10 to 80 111, more preferably 20 to 100 And the overall thickness of these layers is between 30 and 200 m, preferably between 50 and 1801, more preferably between 70 and 1 It is in the range of 50 / m.
- the agricultural multilayer film according to the present invention has the following physical properties and characteristics. I'll do it.
- Elmendorf tear strength is at least 90 kg Zcm in MD direction, preferably at least 100 kg Zcm, and at least 90 kg '/ cm in TD direction. It is preferably at least 100 kg Z cm.
- the dirt impact strength at a thickness of 100 m is 900 g or more, preferably 100 g or more.
- Tensile strength at break is the MD direction 3 5 0 kg Z cm 2 or more, good or to rather is Ri der 3 7 0 kg Zcm 2 or more and the TD direction 3 5 0 kg / cm 2 or more It is preferably at least 370 kg Zcm 2 .
- the initial light transmittance at a thickness of 100 m is 90% or more, preferably 92% or more, and the light transmittance after 120 days of outdoor exposure is 85% or more. , Preferably 87% or more.
- the Elmendell tear strength is determined by conducting a tear strength test in the MD and TD directions of the multilayer film in accordance with JIS Z1702.
- the dirt impact strength is determined by performing an impact test in accordance with JIS Z1777 (dirt tip diameter 38 mm).
- Tensile strength at break is based on JISK6781, and under the following conditions, cross-head constant moving speed tensile tester (a) in the MD and TD directions of the multilayer film. This is a value obtained by performing a tensile test using an Instron Corporation.
- the 50 / m-thick agricultural multilayer film according to the present invention has a gloss of usually 60% or more and a haze of usually 15% or less.
- the gross of the film was measured at an incident angle of 60 ° C according to ASTM D523.
- the haze of the film is ASTMD 1 It was measured in accordance with 0 0 3 — 6 1.
- the multilayer film for agricultural use according to the present invention as described above is obtained by mixing the polyethylene resin used in each layer of the multilayer film with the components such as the above-mentioned additives, respectively. Melt and mix with a plastic mixer or roll mill, and then laminate the outer, intermediate and inner layers by coextrusion inflation or coextrusion T-die method. It can be prepared by:
- Such an agricultural multilayer film is excellent in heat retention, dustproofness, and toughness. It is spread over agricultural and horticultural facilities such as a house and a tunnel, and is used for a long time to grow useful crops. Can be used.
- Impermeable sheet
- the impermeable sheet is made of the above-mentioned ethylene copolymer composition (A), (A '), (A ") or ( ⁇ ' '' ') and, if necessary, a carbon black and a heat stabilizer. It is formed from known additives such as weathering stabilizers, pigments, fillers (excluding carbon black), lubricants, antistatic agents, flame retardants, and foaming agents. Combined with a base material, a reinforcing material, a drainage material, etc., it is a multilayer body in which a layer composed of the composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′) or ( ⁇ ′ ′) is an inner layer or an outer layer. You may.
- the impermeable sheet has an elongation at the time of tearing at a thickness of 1.5 mm (JISA 608, creep method, speed of 200 mm) of 80% or more, and a thickness of 1.5 mm.
- the elongation at the time of piercing in mm was 5 mm or more, and the heat seal was performed using a heat sealer for on-site use at a set temperature of 500 ° C and a sealing speed of 5 mZ. Peel strength at the welded part Degree (JISK 6 328, speed 50 mm / min) Force? It is preferably at least 10 kg / 20 mm.
- the impermeable sheet may hit objects with irregularities, especially sharp objects, the elongation at the time of tearing and piercing will not be sufficient to maintain the performance of the impermeable sheet. It is an important factor.
- a hot air sheet welding machine 10E manufactured by Leister As a heat sealer to be used on site, a hot air sheet welding machine 10E manufactured by Leister is used. In the peeling test, two sheets were melted at a set temperature of 500 ° C and a speed of 5 m / min using a 10-E hot air sheet welding machine manufactured by Leister. After adjusting the condition at 23 ° C for 48 hours or more, a peel strength test is performed at a speed of 50 mm / min according to JISK 6328, the peel strength is measured, and an index of the fusion property is obtained.
- the piercing test was performed using a universal testing machine manufactured by Insuto K.K., and the impermeable sheet was fixed to a jig with a diameter of 5 cm, and a needle with a flat tip of 0.7 mm in diameter was used.
- the breaking strength when piercing at the speed of mm Z was measured, and the breaking strength / sheet thickness (kg Z mm) and elongation at break were determined.
- the impermeable sheet according to the present invention can be easily and highly strongly heat-sealed by a heat seal actually used on site, and is therefore extremely preferable in practical use.
- Such impermeable sheets are excellent in mechanical strength such as tensile strength, tear strength, elongation at tear, piercing strength, elongation at piercing, etc., flexibility and adhesiveness.
- the multilayer film is formed from a base film layer and a layer comprising the above-mentioned ethylene copolymer composition (A), (), ( ⁇ ′′) or ('′′ ′).
- the material for forming the base film is not particularly limited as long as it has a film-forming ability, and any polymer, paper, aluminum foil, cellon, or the like may be used. Can be. Examples of such a polymer include high-density polyethylene, medium and low-density polyethylene, ethylene-vinyl acetate copolymer, and ethylene acrylic acid.
- Poly Vinyl polymers such as vinyl chloride, polyvinylidene chloride, polystyrene, polyacrylate, polyacrylonitrile, Nylon 6, Nylon 66, Nylon Nylon 11, Nylon 12, Nylon 61, Polyamide
- the polymer film may be non-oriented or uniaxially or biaxially stretched.
- the substrate can be appropriately selected depending on the use of the multilayer film.
- a base material can be appropriately selected depending on an article to be packaged.
- transparency such as polyamide, polyvinylidene chloride, ethylene-vinyl alcohol copolymer, polyvinyl alcohol, and polyester can be used.
- resin with excellent rigidity and gas permeation resistance it can.
- polypropylene having good transparency, rigidity and resistance to water permeation.
- a base material is used.
- the composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' ',) may be extrusion-coated directly on the material, or the base material and the composition ( ⁇ ), ( ⁇ ')
- a known method is applied to the base material in advance, such as an organic titanium-based, polyethyleneimine-based, or isocyanate-based method.
- ⁇ ') or ( ⁇ ' '') may be-extrusion coated.
- Such multi-layer films can be used in various packaging bags such as liquid soups, pickles, water-based packaging bags such as konjac, pasta-shaped packaging bags such as miso and jam, sugar, flour, and sprinkles. It is suitable for use in any of powder packaging bags, pharmaceutical tablets, and granule packaging bags. In such applications, it plays a role as a sealant layer.
- Multi-layer film for packaging
- the multilayer film for packaging is composed of at least a three-layer film having an outer layer, one or more intermediate layers, and an inner layer. Outer layer and The resin composition used for the inner layer is different from the resin composition used for the intermediate layer.
- the outer layer and the inner layer are formed from the ethylene copolymer composition (A), (A ′), ( ⁇ ′′) or ( ⁇ ′′).
- the composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′ ′) or ( ⁇ ′ ′) that forms the outer layer and the inner layer may be the same or different from each other. .
- the intermediate layer is composed of a resin arbitrarily selected from the resin compositions used as the material of the base film, a 1-butene (co) polymer, and, if necessary, ethylene.
- a resin formed from a propylene 1-butene random copolymer or a resin composition is preferred.
- 1-butene (co) polymer 1-butene homopolymer or 1 - butene content of 7 5-8 5 mol 0/0, pro pyrene content force 1 5-2 5 mol 0/0 1 - Bed It is a propylene copolymer.
- the 1-butene (co) polymer has an MFR force of '0.1-5 g / 10 min, preferably 0.5-2 g / 10 min, and a density of 0.8. 9 0 ⁇ 0. 9 2 5 g / era 3, is rather to preferred is 0. 8 9 of 5 ⁇ 0. 9 2 0 g / cm 3 range.
- This 1-butene-based (co) polymer can be produced using a conventional zigzag-catalyst.
- the 1-butene-based (co) polymer is based on 100% by weight of the total amount of the 1-butene-based (co) polymer and the ethylene / propylene 1-butene-random copolymer. In a proportion of from 40 to 100% by weight, preferably from 50 to 90% by weight, and more preferably from 55 to 95% by weight.
- Ethylene-les-down Pro pin-les-down 1 - butene down run-dam copolymer is a professional pin-les-down content of between 5 0-9 8 mol 0/0, is rather the preferred 7 0-9 7 mole 0/0 In the range Is desirable.
- Ethylene 'propylene 1-butene random copolymer has an MFR force of 0.1 to 100 g ZLO content, preferably 1 to 30 g ZLO content.
- the density is 0.890 to 0.910 g cm 3 .
- the ethylene-propylene 1-butene random copolymer can be produced using a conventional zigzag-catalyst.
- the ethylene-propylene 1-butene random copolymer includes a 1-butene-based (co) polymer and an ethylene-propylene 1-butene 0 to 60% by weight, preferably 10 to 50% by weight, and more preferably 5 to 45% by weight based on 100% by weight of the total amount of the random copolymer. Used in percentages.
- the 1-butene (co) polymer and the ethylene are contained in the resin or the resin composition constituting the intermediate layer, similarly to the resin or the resin composition constituting the outer layer and the inner layer described above.
- Various stabilizers, compounding agents, fillers and the like can be added in addition to the propylene 1-butene random copolymer in a range that does not impair the object of the present invention.
- an antifogging agent, an antistatic agent, etc. can be added to improve the appearance of the contents, and an ultraviolet inhibitor, etc. can be added to protect the contents.
- Lubricants can also be added.
- the intermediate layer contains no 1-butene (co) polymer and ethylene-propylene 1-butene random copolymer in an amount within the above range.
- It may be composed of two or more layers.
- the multilayer film for packaging according to the present invention is usually formed to a thickness of 10 to 20 m, the intermediate layer has a thickness of 1 to 5 ⁇ m, and the outer and inner layers each have a thickness of 2 to 8 // m. It is adjusted to. Depending on the application, it is also possible to form another resin layer outside the inner layer and Z or outer layer and further o
- the multilayer film for packaging is prepared by mixing the components forming each layer using various types of blenders, and then using an ordinary molding method, that is, an extruder provided with a plurality of die lips. It is manufactured by supplying it to a resion film molding machine or a T-die molding machine.
- the multilayer film for packaging has a ratio of the Elmendorf tear strength in the longitudinal direction to the transverse direction (transverse longitudinal direction) of 9.1 or less.
- an excellent packaging film is used.
- the cut is performed by a knife running in the lateral direction of the film. It can be evaluated based on the ratio of the tearing strength of Elmdorf.If the ratio of the tearing strength of Elmendorf is 9.1 or less, it is judged that the cutting property by the automatic packaging machine is good. .
- the multilayer film for packaging according to the present invention has an Elmendorf tear strength ratio of 9.1 or less, is easy to cut by an automatic packaging machine, and has a high speed. Enables continuous packaging.
- the Elmendorf tear strength is measured by a method according to JISZ-1702.
- the multilayer film for packaging according to the present invention is excellent in transparency and has a haze value of usually 2.0% or less.
- the multilayer film for packaging according to the present invention is excellent in finger press restoring property, has an initial restoring rate of 70% or more, and has a residual strain of 5.5 mm or less.
- the multilayer film for packaging according to the present invention is excellent in low-temperature sealing properties, and has a sealing strength of 100 kg / cm 2 or more of a film heat-sealed at 90 ° C. is there.
- Such a multilayer film for packaging has excellent mechanical strength properties, transparency, and low-temperature heat-sealing properties, and can be pressed into the contents side with a finger after packaging, for example.
- the film has good resilience afterwards, and is suitable for packaging foods and daily necessities.
- the film for stretching packaging may contain the ethylene copolymer composition (A)-, ( ⁇ '), ( ⁇ ') or ( ⁇ ''') if necessary.
- Other resin components for example, an ethylene / propylene random copolymer having a density of 0.880 to 0.895 g / cm 3 , a density of 0.880 to 0.8 9 5 g / cm 3 of ethylene les down-butene down run-dam copolymer, density force 0.9 1 0 ⁇ 0.9 2 4 high-pressure of g / cm 3 ethylene Les emission acetate Binirura down dam co It is formed from a polymer.
- Such other resin component is used in an amount of 0 to 40 parts by weight based on 100 parts by weight of the composition ( ⁇ ), ( ⁇ '), ( ⁇ ')) or ( ⁇ '").
- the composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′′) or ( ⁇ ′′ ′), or the composition ( ⁇ ), ( ⁇ ′), ( ⁇ ) is used.
- Compositions consisting of '') or ( ⁇ ''') and other resin components include slip agents, antiblocking agents, antifogging agents, antistatic agents, and In order to protect the contents, various additives such as an ultraviolet ray inhibitor can be blended within a range that does not impair the object of the present invention.
- As the slip agent higher fatty acid amides such as, for example, oleic acid amide, stearyl acid amide, and erlic acid amide are preferably used.
- inorganic substances such as silica and talc are preferably used.
- antistatic agent for example, glycerin fatty acid esters and sorbitol fatty acid esters are preferably used.
- the film composed of the composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′ ′)) or ('′ ′ ′) has a necessary degree of tackiness (stickiness).
- a linear low density polyethylene emissions, liquid polybutadiene GETS down, poly Lee Sobuchi les emission or the like may be 2 to 1 0 weight 0/0 approximately formulation.
- a film for stretch packaging according to the present invention contains a film comprising the composition ( ⁇ ), ( ⁇ '), ( ⁇ ',) or ( ⁇ ''') as described above. ing.
- the film for stretch packing according to the present invention usually has a thickness of 10 to 50 / m.
- the stretch packaging film may have a single-layer structure or a multilayer structure.
- Single-layer stretch packaging films can be manufactured by ordinary film forming methods such as the in-floating method and the T-die method.o
- a film for stretch packaging having a multilayer structure can be formed by a conventionally known molding method, for example, an infusion film molding machine having a plurality of die lips in an extruder, or a T-type film. It can be manufactured using a molding device such as a die molding machine.
- the film for stretch wrapping has a longitudinal tensile stress at break (JI SZ 1 7 0 2) force 'Ri der 4 0 0 ⁇ / cm 2 or more, a tensile elongation at break in the longitudinal direction (JISZ 1 7 0 2) Power?
- the stretch packaging film according to the present invention has a higher tensile breaking elongation than conventional low-density polyethylene or ethylene-vinyl acetate copolymer films. Since stretching of 300 to 600% is possible, it is suitable for stretch stretching of stretched or deformed products (two or more products with different shapes).
- the film for stretch packaging according to the present invention has a higher post-packaged film than conventional low-density polyethylene or ethylene-vinyl acetate copolymer film.
- the applied stress is small so that the packaged product is not deformed, the film strength after packaging is strong, and the film appearance is good.
- the film for stretch packing according to the present invention is a film comprising one sheet of the composition (A), ( ⁇ ′), ( ⁇ ′′) or ( ⁇ ′, ′). It may be a film, or it may have one or two layers in addition to the film layer composed of the composition ( ⁇ ), ( ⁇ '), ( ⁇ ' '') or ( ⁇ '' ''). It may be a film having a multilayer structure having the above-mentioned film layers.
- Multi-layer stretch packaging film for example stretch packaging
- the film layer of the composition ( ⁇ ), ( ⁇ '), ( ⁇ '') or ( ⁇ ''). Is an intermediate layer, and a film layer consisting of a high-density linear low-density polyethylene is formed on one surface of the intermediate layer as a non-adhesive layer.
- the composition ( ⁇ ), ( ⁇ ′), (() is formed so as to have a thickness of about 5 to 30% with respect to the total thickness of the lum.
- the liquid poly Lee isobutyrate les emissions liquid polybutadiene diene down like a composed of 2 to 1 0 weight 0/0 compounded composition full i Lum layer be sampled Les It can be obtained by a method such as forming the film so as to have a thickness of about 5 to 30% with respect to the total thickness of the film for wrapping.
- Such stretch packing films can be stretched at a high level and have an appropriate degree of adhesiveness, so that excessive stress is not applied to the package after packaging, and the strength characteristics and appearance after packaging are excellent.
- the film is free from excessive stickiness, and is excellent in productivity, packaging, handling, and the like.
- Wrapping films are improved packaging or wrapping films, and more specifically, improved transparency, toughness, and stamping. Shrink, skin, stretch, hot tack, and vacuum wrap films, which show dispensing processability and irradiation crosslinking efficiency is there. These films have at least one layer of at least one ethylene copolymer composition (A), (A '), ( ⁇ ''') or ( ⁇ '''). It has at least one layer, and may be biaxially oriented, or may be multilayered and / or configured to have layer properties. Good.
- the ethylene-based copolymer composition (A), ( ⁇ ′), ( ⁇ ”) or ( ⁇ ” ”) contains the improved film properties found by the present applicants.
- Additives such as antioxidants (eg, hindered phenolic systems (eg, Irganox TM 1010 manufactured by Chiba Geigy Corp.)), phosphites (eg, For example, Irgafos (trademark) 168), adhesive (cng) additives (such as polyisobutylene (PIB)), PEPQ (trademark of Sandoz Chemical, whose main material is biphenylphosphine) (Which may be considered honey), pigments, colorants, fillers, etc.
- antioxidants eg, hindered phenolic systems (eg, Irganox TM 1010 manufactured by Chiba Geigy Corp.)
- phosphites eg, For example, Irgafos (trademark) 168
- adhesive (cng) additives such as polyisobutylene (PIB)
- PEPQ trademark of Sandoz Chemical, whose main material is biphenylphosphine
- the film produced can also include additives that enhance its antiblocking and coefficient of friction characteristics, including but not limited to these Unrestricted forces Includes untreated and treated silicon dioxide, talc, calcium carbonate and clay, and primary and secondary fatty acid amides, silicone coatings, etc. It is also possible to add other additives which enhance the anti-fogging properties of this film, as described, for example, in US Pat. No. 4,486,552 (Niemann). is there. In addition, further additives, such as quaternary ammonium compounds, alone or with EAA or other additives, can be used to enhance the antistatic properties of the film, thereby enabling the packaging of electron sensitive items. It can also be added in combination with a class of functional polymers.
- ( ⁇ ''') can be used as the sole polymer component of this film, regardless of whether the structure to be used is a single layer or a multilayer structure. is there.
- the film It can improve processability, film strength, heat sealability or adhesion.
- ethylene copolymer composition examples include, but are not limited to, high pressure low density polyethylene (LDPE), ethylene / vinyl acetate polymer (EVA), ethylene Z copolymers of carboxylate and their Onomas, polybutylene (PB) and ⁇ - olefin polymers, such as high-density polyethylene, medium-density polyethylene, polypropylene, ethylene / propylene copolymers , Linear low-density polyethylene (LLD) and ultra-low-density polyethylene, as well as graft-modified polymers and their premixes.
- LDPE high pressure low density polyethylene
- EVA ethylene / vinyl acetate polymer
- PB polybutylene
- ⁇ - olefin polymers such as high-density polyethylene, medium-density polyethylene, polypropylene, ethylene / propylene copolymers
- LLD Linear low-density polyethylene
- the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ '') or ( ⁇ ''') preferably has at least at least one of the blend compositions. It comprises 50%, more preferably at least 80 Q / o of this blend composition.
- the outer film layer (with the present technology) CT / JP99 / 011 4
- the (sealant) layer consists essentially of the ethylene-based copolymer composition (A), ( ⁇ ′), ( ⁇ ′′) or ('′′).
- the oriented and unoriented film structures of the present invention can be manufactured using conventional simple hot blown bubble, cast extruded or extruded coating techniques, and in particular oriented films. In the case of a more elaborate technique, such as "tenter framing" or “double noble” or “trapped bubbles” 1 e) ”method.
- the force, orientation, in a replaceable manner using "stretched” and “oriented” is-in effect, for example, the internal air pressure or This occurs as a result of stretching the film, such as by a tenter frame that presses on the edge of the film.
- inventive ethylene copolymer composition (A), (A '), ( ⁇ ''') or (A ''') can be significantly reduced in both the machine and transverse directions by a simple bubble method. Shows improved shrinkage. Further, the force of using a simple bubble method at high blow-up ratios, for example equal to or greater than 2.5: 1, or more preferably in US Pat. No.
- BUR bubble diameter ⁇ dice diameter is used to calculate the blow-up ratio ( ⁇ 1ow-Up Ratio), abbreviated as “BUR” herein.
- the packaging and wrapping free film of the present invention may be a single layer or a multilayer film.
- the monolayer may include at least one ethylene copolymer composition (A), ( ⁇ ′), ( ⁇ ′ ′) or At least 10% by weight, preferably at least 30% by weight, and at least one ethylenic compound.
- the polymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' ') may be contained in an amount of up to 100% by weight.
- the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ '') or ( ⁇ ''') used for the purpose of forming this monolayer has the characteristics desired in this film. And more than one type of ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ '') or ( ⁇ '''') is used in the construction of this film. In an embodiment, these polymers are selected based, in part, on both their power and operating conditions that they are compatible with each other. Similarly, in the structure of this single layer, one or more ethylene copolymer compositions ( ⁇ ), ( ⁇ '), ( ⁇ ') or ( ⁇ ''') One or more conventional ethylene polymers (eg, conventional uniformly branched linear ethylene produced as described in US Pat.
- conventional ethylene polymers eg, conventional uniformly branched linear ethylene produced as described in US Pat.
- Single-layer films are best suited for use in stretch overwrap and envelope wrapping methods.
- the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ''') or ( ⁇ ''') of the ethylene copolymer composition of the present invention may be used.
- the produced single-layer film shows surprisingly good oxygen permeability.
- Oxygen permeation can occur when individual slices of red meat are stretched and wrapped (i.e., a food dealer / butcher actually cuts the first meat for individual sales and produces smaller slices). This is particularly beneficial for “i-i-store” wrapped meat, and because of the permeability of oxygen, the bright red color desired in fresh red meat Can be attached. Films useful for packaging individual red meat slices will typically exhibit minimal shrinkage and good stretchability. The film preferably exhibits oxygen permeability and does not permanently deform the film, nor does it consume the meat without making the meat unattractive. It shows good elastic recovery so that it can be inspected. Such a co-pending U.S.
- One monolayer comprises an ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ''') or ( ⁇ ''''), and ethylenno ⁇ , a monounsaturated carbonyl polymer.
- ⁇ ethylene copolymer composition
- EVA Ethylene Z Meta-acrylic acid Z
- EAA Ethylene Z Meta-acrylic acid Z
- the ethylene-based copolymer composition ( ⁇ ), ( ⁇ ) ( ⁇ '), ( ⁇ '') or ('''') Force to use as core, outer surface, middle and / or inner seal layer of this structure? it can.
- the ethylene copolymer composition described in the present specification), ( ⁇ ′), ( ⁇ ′ ′) or ( ⁇ ′ ′ ′) At least one is used as at least one heat-sealable outer layer provided in the film structure.
- This heat sealable outer layer may be co-extruded with another layer (s), or the heat sealable outer layer may be laminated to another layer (s) in a second operation, This can be done, for example, in ii Wilmer A. Jenkins and James P. Harrington 3 ⁇ 4 “As described in Packaging Foods With Plastics J (1991)” or “Society of Plastics Engineers RETEC Proceedings”, June. 15-17 (1981), WJ Schrenk and R. Finch, Coextrusion For Barrier Packaging].
- the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ '') or ( ⁇ '''') described in this specification is used as the multilayer film structure. It constitutes at least 10 percent of the entire film structure.
- the other layers in this multi-layer structure have non-limiting forces? , And / or tie layers and / or structural layers.
- Various materials can be used in these layers, and some of them may be used as two or more layers in the same film structure. These materials include, but are not limited to, foil, nylon, and ethylene Z-vinyl alcohol (EV0H) copolymers, polyvinylidene chloride (PVDC), and polyethylene.
- EAA ethylene / vinyl acetate
- EAA ethylene / acrylic acid copolymers
- EAA ethylene Z-metaacrylic acid copolymers
- ULDPE, LLDPE) HDPE high density polyethylene
- MDPE ethylene /ethylene / acrylic acid copolymers
- EAA ethylene Z-metaacrylic acid copolymers
- ULDPE, LLDPE) HDPE high density polyethylene
- MDPE ethylene /ethylene / acrylic acid copolymers
- EAA ethylene Z-metaacrylic
- the multilayer film structure includes at least three layers (eg, an “A / B / A” structure), where each outer layer Contains at least one ethylene copolymer composition (A), ( ⁇ '), ( ⁇ ''') or ( ⁇ ''''), and at least Another core layer or hidden layer is low-density polyethylene (LDPE) manufactured by the high-pressure method.
- LDPE low-density polyethylene
- Such a multilayer film structure is good. It shows surprisingly good optical properties while maintaining good overall film strength properties.
- the proportion of layers in this film structure is such that the core layer is a major part of this film structure in terms of a percentage of the overall structure. .
- This core layer must be at least 33 percent of the total film structure (for example, in a three-layer film structure, each "A" outer layer has a full film structure). while constituting a 3 3 weight 0/0 of Lum structures constitute a 3 3 weight 0/0 of the core layer of LDPE ( "B" layer) if the all-off I Lum structures).
- the core layer of this LDPE comprises at least 70 percent of the entire film structure.
- a hidden additional layer may be incorporated in the film structure as long as the optical characteristics are not deteriorated.
- each "A" outer layer comprises at least one ethylene copolymer composition (A), ( ⁇ '), ( ⁇ '').
- this or the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ''') or ( ⁇ '') is generally 0.1% 85 g / cm 3 to 0.96 g Zcm 3 density, preferably 0.9 g Zcm 3 to 0.92 g Zcm 3 density, 0.2 g / 10 min to 10 g Z 10 Shown is the melt index (12) for minutes, preferably 0.5 g ZIO to 2 g ZIO.
- These multilayer film structures may also include, in this film, an ethylene copolymer composition (A), ( ⁇ '), ( ⁇ '') or ( ⁇ ''). ) (Referred to as ( ⁇ ) in the construction of the film structure below) alone, or other oxygen permeable film layers such as ethylene / vinyl acetate ( ⁇ VA) ) And / or when used in combination with ethylene / acrylic acid (EAA), etc., can show oxygen permeability.
- A / EAA /
- A A
- A / VLDPEZ
- LLDPEZ A ZLLDPE film structures.
- a wide variety of fresh foods such as red meat, fish, poultry, vegetables, fruits, chickens, etc. cut at retail, as well as at retail destiny.
- the benefits of the ingress of environmental oxygen can be gained or better adapted to stretch and overwrap other food items that need to breathe properly.
- a non-shrinkable film that exhibits good oxygen permeability, stretchability, elastic recovery, and heat sealing (eg, a biaxial arrangement induced by double bubble application)
- Producing these films allows wholesalers and retailers to use them in any of the usual forms, such as stock rolls. At the same time that it can be used with normal packaging equipment.
- these multilayer film structures include oxygen barrier films (e.g., SARAN, a film made from polyvinylidene chloride polymer manufactured by Dow Chemical Company). Or EVAL, an ethylene Z vinyl alcohol copolymer manufactured by Eval Company of America (a wholly owned subsidiary of Kuraray Ltd.), a Kuraray of America, Inc. (Trademark resin) etc.
- SARAN a film made from polyvinylidene chloride polymer manufactured by Dow Chemical Company
- EVAL an ethylene Z vinyl alcohol copolymer manufactured by Eval Company of America (a wholly owned subsidiary of Kuraray Ltd.), a Kuraray of America, Inc. (Trademark resin) etc.
- EVAL ethylene Z vinyl alcohol copolymer manufactured by Eval Company of America (a wholly owned subsidiary of Kuraray Ltd.), a Kuraray of America, Inc. (Trademark resin) etc.
- This oxygen barrier layer can also be designed to be "peelable” so that it can be removed at a point in time, and the peelable structure or design must be individually “Case-ready” is particularly useful in vacuum-encased packages, which require repackaging in an oxygen-permeable package to add a bright red color The nature is lost.
- the ethylene copolymer composition (A), ( ⁇ ′), ( ⁇ ′)) described in the present specification can be obtained.
- the film structure created from ( ⁇ ''') should be packaged
- the shape and contour of the product may be formed in advance.
- the benefits of using pre-formed film structures include increased stretchability, reduced film thickness for a given stretch requirement, heat up and cycle.
- the thickness of these single or multilayer film structures can be varied. However, the thickness of both single-layer and multilayer film structures described herein typically range from 0.1 mil (2.5 micrometer) to 50 mil. (127 micrometres), preferably from 0.4 mils (10 micrometres) to 15 mils (381 micrometres) In particular, the force is 0.6 mil (15 micrometer), and 4 mil (102 micrometer).
- the film structure prepared from the ethylene copolymer composition (A), (A '), (A ") or (A'") described herein is surprisingly surprising. It shows more efficient irradiation cross-linking than the conventional, regular, copolymerized linear ethylene / ⁇ -olefin polymers.
- One aspect of the present invention is that these unique By taking advantage of the irradiation efficiencies of the polymers, it is possible to produce film structures with a distinctly or selectively crosslinked film layer strength.
- the ethylene copolymer composition (A), (A '), (A',) or (A '',) is included in order to take advantage of the further advantage of such a discovery.
- pro-rad agents such as those described by Warren in US Pat. No. 4,957,790.
- Can Shi ⁇ j Ichiru acid Application Benefits such as ⁇ Li Le and / or antioxidants and a crosslinking inhibitor, for example, U.S. Patent No. , 055, 328, can be formulated with butylated hydroxytoluene as described by Evert et al.
- Irradiation is also effective for increasing the shrinkage temperature range and the heat sealing range of these film structures.
- U.S. Pat.No. 5,089,321 has at least one heat-sealable outer layer and at least one core layer exhibiting good radiation crosslinking performance.
- a multi-layer film structure is disclosed.
- beta irradiation with an electron beam source and gamma irradiation with a radioactive element such as Cobalt 60 are the most common methods of causing crosslinking of film materials.
- the thermoplastic film is produced by the blown film method and then exposed to an irradiation source (beta or gamma) with an irradiation dose of up to 20 Mrad.
- an irradiation source beta or gamma
- a force that can induce radiation crosslinking before or after final film orientation is induced before final orientation.
- Irradiation techniques effective for performing the processing of the film structures described herein include techniques known to those skilled in the art. Preferably, this irradiation is accomplished using an electron beam (beta) irradiator at a dose level of 0.5 Mrad to 20 Mrad.
- Shrink film structures prepared from the ethylene copolymer compositions ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' '' ') as described herein also include It is expected to exhibit improved physical properties due to the lower degree of chain scission resulting from the irradiation treatment.
- the hot-tack film of the present invention may be a single-layer or multi-layer structure having an orientation or a non-orientation, and may be formed as a knot- ⁇ -box or a foam.
- An example of using the film of the present invention in a form-fill-seal operation is described in "Packaging Foods With Plastics” by Wi Imer A. Jenkins and James P. Harrington, (1991), pp. 32-83. It is described in G. Davis of the Packaging Machinery Manufacturers Institute 3 ⁇ 4 “Packaging Machinery Operat ions: No. 8, Form-Fi 11 -Sea 1 ing, A Self-Instructive Course” (April 1982); M.
- the high load packaging film is a film comprising the ethylene copolymer composition (A), ( ⁇ '), ( ⁇ ,') or ( ⁇ ','),
- the thickness of the film is at least about 1.25 mils (31 micron), which is equivalent to 0.923 gram, 0.95 gram. / Film cubic centimeters (g / cc), and is typically less than the polystyrene film currently used in the industry. They exhibit at least 30% higher tear strength or impact resistance.
- This film can be used in heavy-duty packaging and transport applications, as well as in hot-fill packaging applications.
- the term “medium modulus” is used to refer to a new film and to mean that the calculated film density is in the range of 0.923 to 0.95 g / cc. Is used.
- the term “calculated film density” is used to mean the film density as calculated from the known weight of the constituent polymer class or layer and the measured density after annealing. Is used.
- the term "thick” refers to a new film and refers to a film thickness of about 1.25 mils (31 micron) or more. Is used.
- variable stroke extrusion refers to the distance between the annular die for film and the height of the stalk, ie the distance between the bubble inflation points, during the production of the blown film. This means that it can be changed from 1 inch to 14.4 inch (366 cm) or more.
- the term encompasses both the well-known pocket blown film extrusion and Stoke blown film extrusions.
- the distance between the film die and the air ring shall be equal to or greater than 30 inches (76 centimeters).
- high-stroke extrusion is used in the usual sense of
- the term “hot filling” refers to performing a packaging or product filling operation at a product temperature of 45 ° C. or higher.
- the term “high load” generally refers to packaging large quantities or industrial items having a single package weight of more than 10 bond (4.5 kilograms).
- the tear resistance of the film of the present invention is measured in accordance with ASTM D1922 and reported graphically. The measurement of the tear resistance is performed both in the machine direction (MD) and in the transverse direction (CD). In this specification, the term “tear strength” is used to express the average between MD and CD tear resistance values, which are also reported in grams. The impact resistance of the film is measured according to ASTM D179.
- the calculated film density of the medium modulus film of the present invention is 0.923 g / cc power to 0.95 g Z cc, especially 0.926 g / cc power, etc. It ranges from 948 / cc, more particularly from 0.93 g / cc to 0.945 / cc.
- the film thickness is generally greater than about 1.25 mils, especially in the range of 1.5 mils to 8.75 mils, and more particularly in the range of 2 mils to 8 mils.
- the tear strength or impact resistance of this new film is comparable to that of the prior art with almost the same film density, melt index and film thickness. It is at least 30% higher than the tear strength or impact resistance of the polyethylene film.
- the new film can be conveniently formed into a bag and is useful in hot-fill packaging applications in addition to heavy duty packaging and transportation applications, where such applications have a good balance of properties.
- a film exhibiting the following characteristics, that is, a film having good tear, impact and dimensional stability, high strength, and medium modulus.
- This new film can be manufactured by variable-stalk blown extrusion.
- the production of films by blown film extrusion is well known. See, for example, US Patent No. 4,632,801 to D0wd, which describes a typical blown film extrusion process.
- a polymer is introduced into a screw extruder and the polymer is introduced therein. Melt and move forward in the extruder under pressure. The molten polymer is extruded through an annular die for film to produce a molten tube. The tube is then inflated by supplying air into the annular die to create a "bubble" having a desired diameter.
- the bubble is crushed to form a ray flat film. Let it.
- the final thickness of this film is adjusted by the extrusion rate, bubble diameter and nip speed, and these are the screw speed, haid-off rate and winding speed. It can be adjusted with such variables. Increasing the extrusion rate while keeping the bubble diameter and nip speed constant increases the final film thickness.
- Typical blown extrusion methods can be generally categorized as “stork” or “bocket” extrusion.
- the bubble inflates and expands well above the annular die, which is controlled. Until the molten tube swells at a height of at least 5 inches (12.7 centimeters) above the annular die, the tube is approximately the same as the film annular die.
- An air ring (which usually has a single lip structure) supplies an air flow outside the tube parallel to the machine direction so that the same diameter is maintained. It is also possible to cool the inside of the bubble during production in order to ensure optimal stability of the bubble, and it is also possible to use bubble stabilizing means inside the bubble.
- Pocket extrusion In the case of the pocket extrusion process, air is supplied by an air ring located immediately adjacent to the annular die so that the bubbles coming out of the die are immediately expanded and expanded.
- the air ring is typically double-liped to ensure the stability of the bubble after it has been added.
- Pocket extrusion is more widely used than Stoke extrusion, and is generally a polyethylene composition with a lower molecular weight and lower melt strength, such as a linear low extrusion. It is suitable for high density polyethylene (LLDPE) and ultra-low density polyethylene (ULDPE).
- Both single-layer and multi-layer films can be produced by stalk and pocket extrusion, and the films of the present invention can be used in single-layer structures or multi-layer films. It may be a thing.
- the multilayer film can be manufactured by any technique known in the art, including, for example, co-extrusion, lamination, or a combination of both.
- the preferred thick, medium modulus, polyethylene film of the present invention is It is a single-layer film structure.
- An additive for example, an antioxidant, is added to the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ' '') or ( ⁇ '' '') used in the production of the film of the present invention.
- Applicants will provide the following materials, including phosphites, phosphites, cling, additives, Standostab PEPQ TM (supplied by Sandoz), pigments, colorants and fillers. It is also possible to include the disclosed improved tear and impact resistance to the extent that the additives and materials do not interfere.
- additives that improve anti-blocking and anti-friction characteristics including but not limited to untreated And primary and secondary and substituted fatty acid amides in addition to treated silicon dioxide, talc, calcium carbonate and clay), release agents, silicones
- a coating material or the like in the film of the present invention.
- another additive such as a quaternary additive is used.
- an ammonium compound or the like alone or in combination with one or more ethylene monoacrylic acid (EAA) copolymers or other functional polymers.
- the improved strength properties of the new film allow for the addition of recycled and scrap materials to the film composition used in the manufacture of the new film.
- the diluting polymer can be mixed or compounded in larger amounts than is typically possible with prior art polyethylene film compositions, and this new polymer can be used. Film is also trying to be used successfully in heavy duty packaging and transport applications -Ill-can provide or maintain the desired performance characteristics when doing so.
- Suitable diluent materials include, for example, elastomers, rubbers, and anhydride-modified polyethylenes (eg, LLDPE and HDPE with graphitized polybutylene and maleic anhydride).
- High-pressure polyethylenes such as ethylene / acrylic acid (EAA) copolymers, such as low-density polyethylene (LDPE), and ethylene / vinyl acetate (EVA) copolymers and Includes ethylene Z meta acrylate (EMA) copolymers and the like, as well as combinations thereof.
- EAA ethylene / acrylic acid
- LDPE low-density polyethylene
- EVA ethylene / vinyl acetate copolymers
- EMA ethylene Z meta acrylate copolymers and the like, as well as combinations thereof.
- the present invention is a multilayer film that includes at least two layers, has substantial tackiness on one side, and is suitable for use as a stretch wrap material.
- the novel multilayer film comprises at least one ethylene copolymer composition having a density of at least about 0.90 g / cc or about 0.90 / cc. ( ⁇ ), ( ⁇ '), ( ⁇ ' '') or ( ⁇ '' ') backside layer, having a film forming property of at least 1 having a density of about 0.90 g / cc
- the surface layer shows noticeably less tackiness than the back layer.
- the core or structural layer can be varied to meet specific film strength requirements.
- a film made with single-sided adhesiveness can be used for stretch wrapping, stretch banding, and wrapping for holding small or large articles. Particularly useful for tension winding operations.
- Single-sided adhesive films are provided without the need for adhesive additives or functional polymers.
- Advantages of the present invention include reduced die build-up, accumulation and migration of low molecular weight materials. This means that cleaning and holding times during film production and lapping operations are reduced. Problems with adhesion to adjacent articles and packaging and contamination, surface retention of dust or debris are also reduced.
- Another aspect of the present invention is to provide a single-sided tacky film of polymers having similar rheology and monomer chemistry, thereby improving the melt viscosity during co-extrusion. And good polymer compatibility for recycling.
- Another aspect of the present invention is a single-sided adhesive film, wherein the high tack does not decrease when the film is under stretching conditions and the film exhibits significant stretch and non-stretch tack. To provide the rum.
- the amount of stickiness is related to the density of the polymer or blend that forms the backside and top layers of the film, with the tackiness improving as the polymer density of the backside layer decreases. That was discovered.
- the backside layer of the present invention has a backside layer density of 0.90 g Zc c or less, preferably 0.
- the surface layer of the present invention has a density of 0.90 g / cc or more, preferably in the range of 0.91 g / cc to 0.96 g / cc, and more preferably in the range of 0.91 g / cc to 0.96 g / cc. Preferably 0.
- the density of the core layer or structural layer included in the multilayer film of the present invention can be varied to meet the overall film strength requirements depending on the end use.
- the ethylene polymers having a density of 0.90 g / 'cc or less than 0.90 / cc which constitute the backside layer according to the invention are polystyrenes of very low density of homogeneous branches and very low densities.
- VLDPE ethylene copolymer
- the backside layer comprises the composition ( ⁇ ), ( ⁇ '), ( ⁇ ' '.) Or ( ⁇ ' '').
- the film-forming olefin polymer composition having a density higher than 0.90 g Zcc constituting the surface layer of the present invention is a propylene and ethylene polymer such as a polymer.
- the surface layer is made of polypropylene, such as polypropylene in MDPE or HDPEMD ⁇ alone, in blends with blends, and its ability to provide equal stretch and non-stretch tack. Preferred for.
- the ethylene polymer constituting the core or the structural layer of the present invention comprises low-density polyethylene (LDPE), medium-density polyethylene (MDPE), high-density polyethylene (HDPE), and a composition. ( ⁇ ), ( ⁇ '), ( ⁇ '') or (A, ''), including heterogeneous and homogeneously branched linear low density polyethylene (LLDPE), heterogeneous and homogeneously branched very low density poly (ethylenediene) (VLDPE) .
- VLDPE and LLDPE are well known to those skilled in the art of linear polyethylene. They can be obtained from Ziegler-Natta solutions, slurry or gas phase polymerization processes, and coordination as described in Anderson et al., US Pat. No. 4,076,698. Manufactured using a metal catalyst. These Ziegler type linear polyethylenes are not homogeneously branched and they have low melt tension. Also, these polymers are low density and do not exhibit substantial amorphousness. Because they inherently have a substantial high density (crystalline) polymer fraction. At densities less than 0.90 g / cc, these materials are very difficult to manufacture using conventional Ziegler-Natta catalysts and may be pelletized. Very difficult. The pellets are sticky and easy to hang together.
- VLDPE and LLDPE are also well known to those skilled in the art of linear polyethylene technology. See, for example, the disclosure of Oerston U.S. Pat. No. 3,645,992. They are produced in solution, slurry or gas phase processes using zirconium and vanadium catalyst systems. Et al. In U.S. Pat. No. 4,937,299 describe a process using a metallocene catalyst.
- This second class of linear polyethylene is a homogeneously branched polymer, ⁇ , and, like the Ziegler-type heterogeneous linear polyethylene, they have a low melt tension. Commercial examples of these polymers are products under the trade name "TAFMER" by Mitsui Chemicals and "EXACT" by Exxon Chemicals. Sold by name.
- Ethylene polymer composition used for the back layer, film-forming olefin polymer composition used for the front layer, and used for the core or structural layer of the present invention is an ethylene polymer produced by homopolymerization of ethylene or by mutual polymerization of ethylene and small amounts of various monomers.
- Additives such as adhesive additives, adhesives (eg PIB), slip and anti-blocking agents, antioxidants (eg hindered phenols such as Ciba Geigy) IrganoxlOlO or Irganoxl076), phosphites (e.g., Irgaf osl68 supplied by Ciba Geigy), stand stub PEPQ (Sands) Pigments, colorants, fillers, and processing aids, although not required to achieve the desired results of the present invention, are included in the stretch wrap materials disclosed herein. You can do that too. However, the additives should be formulated so that they do not or do not interfere with the substantial tack and tackiness found in the present invention.
- the multilayer film of the present invention can be formed from two or more film layers, including AZB and AZB / C structures, by film laminating and / or co-extrusion techniques, as well as those known in the art. It can be manufactured by blow-in or cast-film extrusion equipment. However, the preferred structures are A / B / C structures made by coextrusion technology, and more preferably by cast coextrusion technology.
- a suitable blowing film method is described, for example, in The Encyclopedia of Chemical Technology, Kirk-Othmer, ⁇ 3lk, Shortcut, NY Wily and Sons, 1981, Vol. 16, pp. 16-417 and Vol. 18, pp. 191-192.
- Suitable cast extrusion methods are described, for example, in Modern Plastics, Mid October 1989, Encyclopedia Issue, Vo 66, No. 11, pages 256-257.
- Suitable coextrusion techniques and requirements are described by Tom I Butler in Film Extrusion Manual: Process, Materials, Properties, "Coextrusion", Ch. 4, pp. 31-80, TAPPI Press, (Atlanta, Ga. .1992).
- the melt index of each polymer layer of the multilayer film of the present invention is in the range of 0.4 to 20 g / 10 minutes, preferably 0.5 to 12 g. It is in the range of Z 10 minutes, more preferably 0.8 to 6 g Z 10 minutes.
- the multilayer film of the present invention has a total film thickness in the range of 0.4 to 20 mils (10 micron to 508 micron), preferably 0 micron. In the range of 6 to 10 mils (15 micron to 254 micron), more preferably 0.8 to 5 mils (20 micron to 12.7) Micron) range.
- the layer ratio of the A / B multilayer film of the present invention is larger than the A / B layer of 2:98, preferably in the range of 5:95 to 35:65, and more preferably. Or in the range of 10:90 to 25:75.
- the layer ratio of a multilayer film of two or more layers is such that the back layer and the surface layer of the film are kept at the same thickness, and the ratio of the core or the structural layer is in the range of 60 to 98% by weight.
- the layer ratio is preferably in the range of 65 to 95% by weight, more preferably in the range of 70 to 90% by weight.
- Multi-layer cut-off film
- Multilayer barrier film is an oxygen and moisture impermeable multilayer barrier film Manufactured from the multilayer barrier film, including ostomy bags, laminates for transdermal delivery of the drug, and heat-sealable bags. Products.
- An oxygen and moisture impermeable multilayer barrier film is provided.
- Oxygen impermeability means having a film permeability of 90 cc / m 2 ZH ⁇ atm or less.
- Water-impermeable means that the film has a water vapor permeability of 5 g mZm 2 ZH or less.
- the film includes a barrier layer having at least one heat-sealable skin layer thereon.
- the barrier layer may comprise any suitable barrier layer material that provides the desired oxygen and moisture impermeability, for example, compatible with the heat-sealable skin layer (single or multiple).
- a preferred barrier material is a copolymer of vinylidene chloride and butyl chloride or methyl methacrylate. If the barrier layer comprises a copolymer of vinylidene chloride and vinyl chloride or methyl methacrylate, the barrier layer may optionally include a copolymer of ethylene and vinyl acetate. It can also contain up to 6% by weight, more preferably 4 to 6% as a processing aid.
- the barrier layer is co-extruded with at least one heat-sealable skin layer.
- the heat-sealable skin layer is preferably 15, 0 in both the machine direction (MD) and the transverse direction (TD). 0 0 psi With less than 2% secant modulus.
- the heat-sealable skin layer contains the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ⁇ or ( ⁇ '''').
- the skin layer may contain 0.5 to 5% copolymer, and the skin layer may optionally contain a slip agent and an anti-adhesive agent. It may be desirable to co-extrude an adhesive tie layer of a copolymer of ethylene and vinyl acetate between the layers to improve the adhesion of those layers.
- a barrier layer is co-extruded between two heat-sealable skin layers +.
- you skin layers Ri 7 0 volume 0/0 (thickness) der the full I Lum
- blocking layers is 3 0 percent by volume of the off I Lum (thickness).
- a reusable slimming bag or pouch can be made. Separate the barrier and skin layers (single or multiple) and then use a suitable adhesive polymer, liquid adhesive or hot melt adhesive. They can be stacked together.
- the multilayer barrier film of the present invention exhibits less than 85 dB of noise when bent at an angle of 65 ° at 0.45 Hz, and preferably at 64.5 ° Hz. Bending at an angle of 5 ° shows less than 83 dB noise, most preferably less than 81 dB at a bending angle of 65 ° at 0.4 Hz. Is shown.
- an additional layer can be added to the barrier layer to create a system for transdermally delivering a drug.
- the system includes a backing layer of a blocking film that acts as a barrier to the drug system.
- An adhesive containing the active agent is preferably applied to one surface of the film. Adjacent to the adhesive is a controlled release membrane adapted to contact the patient's skin and to release the drug in a controlled manner.
- the backing layer creates a reservoir containing the active agent, having a modified release membrane obscuring the reservoir opening to regulate diffusion of the agent into the patient's skin.
- Peripheral or all adhesive can be used to adhere the transdermal delivery system to the patient's skin.
- a release liner is placed over the adhesive and membrane to protect the structure before use.
- an oxygen and moisture impermeable multilayer barrier film that can be manufactured using a coextrusion method or a lamination method.
- the features of the present invention include odor blocking properties, flexibility, and low noise.
- a heat sealable surface is provided for use in making bags and patches.
- the multilayer barrier film of the present invention may be, for example, a feedblock coextrusion, a multimanifold die coextrusion, or a combination of the two. It can be manufactured using such standard extrusion techniques. The volume (thickness) of each independent layer can be adjusted at the time of extrusion. Therefore, the total thickness of the multilayer structure can be adjusted. Alternatively, the independent layers can be made separately and laminated together using a suitable adhesive tie layer.
- the multilayer barrier film of the present invention exhibits less than 85 dB of noise when bent at an angle of 65 ° at 0.45 Hz, and preferably has a noise of less than 0.45 Hz. Bending at a 5 ° angle shows less than 83 dB of noise, and most preferably bending at a 65 ° angle at 0.45 Hz is less than 81 dB. Indicates an error.
- the heat-sealable skin layer is preferably a 15, 0 in both the machine direction (MD) and the transverse direction (TD). It has a 2% secant modulus less than 0 psi.
- the 2% secant modulus is a measure of the stiffness or flexibility of a film. We have found that the lower the value of the 2% secant modulus for the heat-sealable skin layer, the softer the resulting film becomes. In general, it is desirable that the 2% secant modulus of the film be as low as possible and still be processable by conventional equipment. For the entire multilayer film, the 2% secant modulus is preferably less than 30,000 psi.
- the resulting multilayer film has low oxygen and vapor permeability, as well as the odor barrier, flexibility, and low noise required for slimming applications You.
- Oxygen and moisture impermeable multilayer blocking off I Lum is copoly Ma one vinyl chloride (1 5-2 0 weight 0/0) and vinyl chloride Li Den (8 0-8 5 weight 0/0) or other includes blocking layer that can have a this comprised a copolymer of vinyl Li Den chloride (9 3-9 4 weight 0 /.) and main Chirume data click Li rate (6-7 wt 0/0).
- Suitable barrier materials include, for example, Salan® 469 and Salan MA MA; commercially available from Dow Chemical Company.
- ethylene Le emissions and vinyl Ruasete one preparative and co port Li Ma scratch 0-6 fold amount 0/0, Shi favored by al Ku can be 4 to 6 wt 0/0 whatever child.
- a suitable set of ethylene Z vinyl acetate copolymer compositions is commercially available from E. I du Pont de Nemours &; Co., Inc. under the trademark Elvax (R). There is a copolymer.
- the barrier layer is capable of two heat seals comprising the ethylene copolymer composition (A), (A '), ( ⁇ ' '') or ( ⁇ '' '' ').
- the barrier film is formed by folding the film, and then bonding the ethylene-based copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ '') or ( ⁇ '''') skin layers to each other. It can be used to make reusable cosmetic bags or vouches by heat sealing.
- the bag has an oxygen permeability of less than 90 cc / m 2 / atm (1.8 cc / 100 in 2 ZH ⁇ atm).
- the blocking film has a total thickness of 35 to 100 micrometer, and the blocking layer constitutes 10 to 30% of the total thickness of the film.
- the skin layer (and, if necessary, the adhesive layer) typically comprises 70-90% of the total film thickness.
- the multilayer barrier film of the present invention can also be produced by a lamination technique using a suitable adhesive.
- a barrier layer and a skin layer can be made separately, and then an adhesive poly liquid adhesive or hot melt adhesive is used. They can be stacked together.
- Suitable adhesive polymers for bonding the barrier and skin layers include, but are not limited to, vinyl acetate, ethyl acrylate, and ethyl methacrylate. And ethylenic unsaturated copolymers of methylacrylic acid, acrylic acid and carbon monoxide. Other acids include the ionomer of ethylene and methyl acrylic or acrylic acid, and graphite anhydride copolymers.
- Suitable liquid adhesives or hot melt adhesives include, but are not limited to, lasers, urethanes, copolyesters, and adhesives. Some are based on the door-creation copolymer.
- the five layers of oxygen and moisture impermeable barrier film include a barrier layer of a suitable barrier material as discussed above.
- the barrier layer comprises two outer heat seals with a force that does not sandwich the adhesive layer between the two outer heat-sealable skin layers. Co-extrude with a possible skin layer.
- the heat-sealable skin layer in this five-layer embodiment is substantially the same as the ethylene and oro fin described in published PC application No. PCT / US92 / 08812. It may contain a linear copolymer or a uniformly branched linear polyolefin resin such as, for example, an extruded resin and a tough resin.
- Suitable adhesives include copolymers of ethylene and vinyl acetate, which improve the mutual adhesion of the barrier layer and the skin layer. 5 PC 44
- the film In its simplest form in another embodiment of the invention, where an additional layer is included with the blocking film to create a system for transdermal delivery of the drug, the film
- the barrier and skin layers act as a backing film, a barrier to the drug system.
- the barrier film further includes an adhesive layer containing the active agent incorporated in a matrix adhered to one side of the film.
- the adhesive chosen should be compatible with the active agent and permeable to the active agent.
- S. DOO androgenic two collected by filtration glyceryl Li down, nicotine, many active agents, including Oyo bis copolyarylene La Mi emissions, Ru can this a force f to be administered to the patient in this manner. Theoretically, almost any drug can be administered in this manner.
- a controlled release membrane on the adhesive layer that is adapted to contact the patient's skin and to release the drug in a controlled manner.
- An additional layer of adhesive which can be applied around the membrane or on the entire surface of the membrane, can also be present to secure the transdermal delivery system to the patient's skin.
- the adhesive used in the practice of this aspect of the invention should be a medical adhesive, for example, a silicone adhesive, an acrylic acid adhesive, or a vinyl acetate adhesive. .
- the systems are sealed in a package or secured to a second blocking film, which is removed before use.
- Fig. 4 illustrates another embodiment of a transdermal drug delivery system according to the present invention.
- the barrier layer and the skin layer form a barrier film that is formed into a reservoir for containing the active agent therein.
- the opening to the reservoir is covered by a controlled release film.
- Around the membrane or over the entire area of the membrane The adhesive that can be applied serves to secure the system to the patient's skin layer.
- the adhesive chosen should be compatible with the active agent and permeable for the agent.
- a release liner or the like hides and protects the adhesive and film prior to use.
- a typical reusable surgical bag containing an opening made from a multi-layer insulation film is made by folding the edges of the multi-layer film and heat sealing the edges. You can make it. Preferably, knots or knurls with one heat-sealable skin layer. The film is folded and sealed so that the inside of the lip is provided.
- the blocking film of the present invention provides desired flexibility and calmness for slimming applications, as well as waterproofness, odor blocking properties and oxygen blocking properties. As will be appreciated by those skilled in the art, the barrier film of the present invention may find use in other packaging applications where moisture and oxygen barrier properties are required.
- a sealant for a laminated film is prepared by using the above-mentioned ethylene-based copolymer composition (A), ( ⁇ ′), ( ⁇ ′′) or ( ⁇ ′′), and air-cooled It can be formed by the shot method.
- the sealant for a laminated film according to the present invention has a dirt inject strength of 100 kg Zcm or more, preferably 150 kg Zcm or more.
- the film has a complete seal temperature of 130 ° C or lower, preferably 110 ° C to 130 ° C.
- the sealant for the laminated film according to the present invention is a blocking film.
- the strength is usually 1.5 kg / cm or less, and the tensile Young's modulus is usually 350 kg / cm 2 or more.
- the thickness of the laminated film sealant according to the present invention is in the range of 10 to 150 ⁇ m , preferably 10 to 60 m.
- a thin film made of any material capable of forming a film-like form can be used as the substrate.
- examples of such a thin film include a polymer film or sheet, cloth, paper, metal foil, and cellophane.
- Such a laminated film sealant has excellent low-temperature heat sealing properties, hot tack properties, impact resistance, blocking resistance, and opening properties.
- Heavy packaging off I Lum is, JISK 6 7 8 catcher in g rate measured in accordance with 1 4 0 0 0 kg 7 cm 2 or more, loaders bets Lee, determined in accordance with the ASTMD 1 7 0 9 A method
- the impact strength is 55 kg / cm or more, and the film thickness is usually 30 to 200 m.
- the film for heavy packaging can be prepared by subjecting the ethylene copolymer composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′ ′)) or ( ⁇ ′ ′ ′) to the inflation method, ⁇ —Can be manufactured by the die method.
- a multilayer film can be formed by laminating a film of a polyester or a polyamide.
- Such films for heavy packaging have excellent mechanical strength, transparency, and smoothness of the film surface, and can be used for food, office supplies, furniture, toys, and electric machinery. Suitable for packaging containers and machine parts. It can also be used as a heavy packaging bag in cold regions.
- the grain bag of the present invention comprises the above-mentioned film of the ethylene copolymer composition (A), (A '), ( ⁇ ' '') or ( ⁇ '' ''), and is composed of two superposed films.
- the three directions of the film are closed. This can be done in any way as long as an opening is formed at one end and a bottom is formed at the other end.
- a single film may be folded in half and both sides closed, or two synthetic resin films may be overlapped and three directions closed.
- a tubular (tubular) film formed by an inflation method or the like is closed and the other is opened. good.
- the extended end serves as a base for attaching a tying string described below, and also serves as a roll for closing the opening of the grain bag of the present invention.
- This extended end may be provided with a separate film at one end of the open end of the bag-like film, so that the extended end is formed when the bag is formed. It may be formed by laminating films.
- the string seal portion is provided to mount the binding string to the extension end.
- the string seal portion is formed by bending a part of the extended end toward the open end of the other film, and folds the inside so as to enclose the strap. Then, for example, the tied cord may be simply inserted by sealing the folded extension end members.
- the binding string may be immobilized by sealing the binding string together with the extending ends. More specifically, for example, an adhesive may be applied to the inside of the string seal to bond the strap and the string seal so that the strap is not moved.
- the gap is provided between the string seal portion and the open end of the other film. Providing this gap makes it easier for the grain bag to be opened when using the grain bag, and also provides a margin for winding the grain bag when it is closed. New
- the width of this gap is suitably 5 to 100 mm, and more preferably 10 to 30 mm.
- the grain bag according to the present invention is realized even when the following components described below are added.
- the grain bag of the present invention may be provided with a flap portion extending from the string seal portion to the opening end side and having a predetermined width so as to cover the opening portion.
- the flaps hold down the contents ′ in the vicinity of the opening, which is preferable in that the stored grains are less likely to spill even when the grain bag is arranged horizontally.
- the width of the flap portion is at least equal to or larger than the width of the gap, and is 30 to 150 mm, more preferably 50 to 100 mm.
- the bottom portion may be provided with a V-shaped cross-shaped fold portion formed by folding one end of the synthetic resin film inward. This is preferable because the bottom of the bag becomes flat when the cereal is placed inside the cereal bag, and the bag stands stably.
- the film is provided with a plurality of ventilation holes along both sides of the grain bag, since the state of the grain stored therein can be appropriately maintained.
- a plurality of the ventilation holes may be formed along at least one of the opening end and the bottom end of the film. Further, each ventilation hole may be provided in a rectangular shape integrally with the film.
- the ventilation hole may be provided in only one of the two films, or may be provided in both films.
- Grain bags also store polymer and move frequently. Since it is performed, it is required to have excellent impact resistance and tear resistance.
- the grain bag according to the present invention comprises a composition ( ⁇ ), ( ⁇ '), ( ⁇ '') or ( ⁇ '''') formed by molding, for example, by an infusion method. Since the film is formed from a film, and appropriate strength is obtained for the cereal bag, the thickness of the cereal bag can be made smaller than that of conventional polyethylene.
- Et al is, the full I Lum of gloss rather then preferable that the this is 50% or more, as a grain bag, the full I Lum thickness force s 3 0 ⁇ 2 0 0 / in im I like it.
- this film has excellent low-temperature characteristics such as low-temperature dropping strength, which can be sufficiently used for cereal bags even in a cold area below freezing point, so that the film thickness can be reduced. High-speed film forming is possible
- the cereal bag of the present invention first, an opening provided at the other end of the cereal bag is opened, and an appropriate amount of cereal is put through the opening. Next, the extended end is wound several times toward the open end of the other film. Finally, the opening is closed by tying the ties together. Therefore, the use of cereal bags is the same as that of conventional paper cereal bags. There is no change. Further, since the bag for cereals of the present invention uses bags made of synthetic resin, it can be manufactured at a lower cost than conventional paper bags for cereals. The above components can be combined as arbitrarily as possible.
- the method for producing a grain bag of the present invention is configured as follows. That is, of the two films, an extension portion is formed in which an end portion of one film extends in an opening direction from an opening end portion of the other film in the opening direction.
- a cord supplying step of supplying a lacing cord along a width direction of the bag to a portion at a predetermined interval from an opening end of the other film at the extending end.
- a bending step of inverting and bending the extended end portion toward the open end side of the other film so as to include the tying string;
- a sealing step of superimposing and welding the straps in a state where the straps are included and a gap is left between the strap and the opening end of the other film.
- the three synthetic resin films which are overlapped are closed in three directions, and the grain bag having the bottom formed at one end and the opening formed at the other end is independent.
- the two films may be formed by sealing on three sides, or may be formed by folding one film into two and sealing in two directions.
- a film formed into a tubular shape in advance such as an inflation film, is used, the manufacturing process is facilitated because the two directions are closed from the beginning.
- a bottom folding step may be provided in which the bottom is folded inward to form a fold having a V-shaped cross section.
- a punching step of providing a plurality of ventilation holes along both sides of the film may be provided.
- the pouch for packaging a flowable material is a voucher used for consumer packaging useful for packaging a flowable material (for example, a liquid such as milk), and the ethylene copolymer composition ( ⁇ ). ), ( ⁇ '), ( ⁇ ' ''), or ( ⁇ '' '').
- the single-layer film structure of the polymer-sealing layer of the ethylene copolymer composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′ ′) or (A ′, ′) is used. It is used to produce the vouches of the present invention for packaging fluid materials.
- the ethylene-based copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' '' ') is used for the sealing layer of the film or film structure. Is used alone. However, the ethylene-based copolymer composition ( ⁇ ), ( ⁇ '), (' '') or ('' '') together with other polymers used as heat seal layers ) Can be blended. Generally, the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' '' ') is used in an amount of from 10% by weight to 100% by weight of the film structure. %.
- the polymer from which the vouches of the present invention are made may include additives known to those skilled in the art, such as antioxidants, phosphites, cling additives, and Sandoz. It is also possible to add the supplied Standostab PEPQ (trademark), anti-block additives, slip additives, UV stabilizers, pigments, and processing aids.
- the film and the film structure disclosed in the present specification are characterized in that the ethylene copolymer composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′ ′) or ( ⁇ ′ ′ ′) is reduced. It may be a single-layer or multi-layer film structure, provided that it is used as one layer, preferably as a seal layer.
- the thickness of this sealing layer should be at least about 0.1 micron (2.5 micron) and more, preferably 0.2 micron (5 micron) force, etc.
- the force may be 0.5 mil (10 micron), more preferably 0.4 mil (10 micron), or 5 mil (12.7 micron). .
- a surprising feature of the bouch film structure of the present invention is that the film has a wide heat sealing range.
- the heat sealing range of this film structure can be generally 50 ° C to 160 ° C, preferably 75 ° C to 130 ° C.
- the seal layers of the present invention have a wider heat seal range than prior art polyethylene films made from a class of non-uniformly branched ethylene polymers even at approximately the same density. I found this. It is important to extend the heat sealing range for greater flexibility in the heat sealing method for manufacturing batches from film structures. Melting point of composition (A), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' '') used in the manufacture of a film structure having a heat seal range specified above.
- the range may be generally from 50 to 130 t :, preferably from 55 ° C to 115 ° C.
- the film structures of the present invention use the DTC Hot Tack Strength Method as defined herein below.
- a seal reno of about 110 T It achieves a heat seal strength of at least 11 bf vom (175 N / m).
- the film structure of the present invention also has a hot tack or heat seal onset temperature of less than about 110 ° C with a force of at least about 1 NZ inch (39.4 N / m). Is shown. It has been found that seals made using the seal layer of the present invention exhibit higher strength at lower sealing temperatures than seals using higher density polyethylene of the prior art. Providing high heat seal strength at low temperatures to enable normal packaging equipment, such as vertical forming, filling and sealing machines, to operate at high speeds to produce low leakage vouchers is important.
- the present invention is particularly useful.
- inventive voucher When comparing the inventive voucher to a voucher manufactured using linear low-density polyethylene, linear ultra-low-density polyethylene, high-pressure low-density polyethylene or a combination thereof, (1) molding, filling and sealing It is considered that a voucher that can be machined at high speed can be obtained, and (2) a patch package with less leakage can be obtained.
- a bouch is manufactured from a film structure in a tubular form and has a laterally heat-sealed end.
- This film structure (I) at least one layer containing the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ '') or ( ⁇ ''') is from 10 to 100% by weight; 0/0, and
- (II) Heterogeneously branched linear ethylene ZC3—C18 ⁇ -olefin copolymer, high-pressure low-density polyethylene, and ethylene monoacetate It has at least one film layer containing from 0 to 90% by weight of at least one polymer selected from the group consisting of copolymers.
- This heterogeneously branched linear ethylene ZC3-C18 ⁇ olefin copolymer (II) is generally a linear low-density polyethylene (for example, using a Ziegler catalyst). Etc.).
- This linear low-density polyethylene is often further divided into subsets, which are either very low-density polyethylene (VLD ⁇ ) or very low-density polyethylene (ULD ⁇ ). ⁇ ) is displayed.
- VLD ⁇ and ULD ⁇ are interchangeable terms, and those of ordinary skill in the art generally use these in this manner.
- the linear low density polyethylene emission density is generally 0.8 7 g Z cm 3 from 0 ⁇ 9 4 g / cm 3 , preferably 0.8 7 g Zcm 3 force range et 0.9 1 5 g / cm 3 of ([pi) It is.
- a single copolymer preferably exhibits a melt index of 0.1 g to 10 g / 10 min.
- the high-pressure, low-density polyethylene of (II) preferably exhibits a density of 0.916 to 0.93 g / cm 3 and a melt index of 0.1 to 10 gZ for 10 minutes.
- the ethylene: monovinyl acetate copolymer of (II) has a weight ratio of ethylene: vinyl acetate of 2.2: 1 to 24: 1, which is equal to 0.2.
- the melt index for 10 gZlO from two forces is shown.
- Another aspect of the invention is
- (A) 0.9 1 5 gZ cm 3 or less density and 1 0.0 g Zlo fraction shows the following main Le preparative Lee Nde' click scan, least for the one composition also (A), ( ⁇ ') , ( ⁇ '') Or ( ⁇ ''') is from 10 to 100% by weight and
- the heterogeneously branched linear ethylene ZC3-C18-olefin copolymer of (II) is generally a linear low-density polyethylene (eg, using a Ziegler catalyst). Etc.).
- This linear low density polyethylene includes very low density polyethylene (VLDPE) and very low density polyethylene (ULDPE), as described above.
- VLDPE very low density polyethylene
- ULDPE very low density polyethylene
- the (II) the density of the linear low density polyethylene ethylene Les emissions of generally 0.8 7 g / cm 3 Power et 0.9 4 g / cm 3, preferably 0.8 7 g / cm 3 Kakara 0.9 1 5 g Zcm 3 Range.
- a single-refined copolymer preferably exhibits a melt index of 0.1 to 10 g Z 10 minutes.
- the high-pressure low-density polyethylene of (b) preferably exhibits a density of 0.916 to 0.93 gZcm 3 and a melt index of 0.1 to 10 gZ 10 minutes.
- the ethylene: vinyl acetate copolymer of (b) has a weight ratio of ethylene: vinyl acetate of 2.2: 1 to 24: 1, which is 0.2 g to 10 g / g. Shows a 10 minute melt index.
- the voucher film structure of the present invention also includes a multilayer or composite film structure, and preferably includes the above-mentioned polymer sealing layer included in the structure. Make it the inner layer of the pouch.
- the multilayer film structure for a bouch of the present invention may be of a variety of constructions as long as the seal layer forms part of the final film structure. It may include film layer combinations.
- the multilayer film structure for patches of the present invention may be a co-extruded film, a coated film, or a laminated film.
- This film structure can also be used as a non-film, such as polyester, nylon, ethylene-vinyl alcohol copolymer (EV ⁇ H), polyvinylidene dichloride (PVDC), such as Saran ) (Trademark) (trademark of The Dow Chemical Company) and metal-coated film, etc., in combination with this seal layer.
- the choice of other materials or materials to be used in combination with the present sealing layer film will depend to a large extent on the final use of the voucher.
- the vouch described herein refers to a sealing layer that is used at least inside the vouch.
- One embodiment of the voucher film structure of the present invention includes a sealing layer of the ethylene copolymer composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′′) or ( ⁇ ′′). Include at least one polymer outer layer.
- the polymer outer layer is preferably a polyethylene film layer, more preferably a "linear low density polyethylene"("LLD") and a ⁇ or “line” hereinbelow. These are heterogeneously branched linear polyethylenes called “ultra low density polyethylene"("ULDPE”) and / or "very low density polyethylene”("VLDPE”).
- An example of a commercially available LLDPE is D ⁇ WLEX® 2045 (a trademark of The Dow Chemical Company, which is commercially available from this company).
- An example of a commercially available ULDPE is ATTANE TM 4201 (The 'Dow Chemical Carcano, a trademark of the 21st, commercially available from this company).
- LLDPEs (both VLDPE and ULDPE) useful herein are ethylene and a small number of alpha-refined olefins having from 3 to 18 carbon atoms, preferably from 4 to 10 carbon atoms.
- Non-refined olefins having 1 to 10 carbon atoms eg, 1-butene, 4-methyl-1-pentene, 1-hexene, 1-octene and 1-decene
- this heterogeneously branched LLDPE is produced using a Ziegler catalyst (eg, as described in US Pat. No. 4,076,698 (Anderson et al.)). make use of) .
- the density of LLDPE for the outer layer generally 0.8 7 g Z cm 3 or more, good Ri preferably Ri 0.9 3 g Roh cm 3 der from 0.9 is main Le preparative Lee Nde' box is generally 0. It is 1 to 10 g Z10 minutes, preferably 0.5 to 2 g 10 minutes.
- the thickness of the outer layer can be any thickness as long as the sealing layer has a minimum thickness of 0.1 mil (2.5 micron).
- a polymer core layer is provided between at least one polymer outer layer and at least one polymer seal layer. Include at least one layer.
- This one layer of polymer may be a film layer of the same LLDPE as the outer layer, or preferably a different LLDPE, and more preferably an LLDPE having a higher density than the outer layer.
- the thickness of the core layer can be any thickness as long as the seal layer has a minimum thickness of 0.1 mil (2.5 micron).
- Yet another embodiment of the voucher film structure of the present invention is a seal layer and another polyethylene film, hereinafter referred to as "high pressure low density polyethylene"("LDPE"). It may be a structure including a lum layer. Generally, this LDPE layer has a density of 0.916 to 0.930 g Z cm 3 , and exhibits a melt index of 0.1 to 10 g ZlO. The thickness of the DPE layer can be any thickness as long as the seal layer has a minimum thickness of 0.1 mil (2.5 micron).
- Still another embodiment of the voucher film structure of the present invention is that the weight ratio of the seal layer to the ethylene: vinyl acetate is from 2.2: 1 to 24: 1 and from 0.2 to 2: 1.
- the structure may include a single layer of EVA polymer exhibiting a melt index of 0 g / 10 minutes.
- the thickness of the EVA layer can be any thickness as long as the seal layer has a minimum thickness of 0.1 mil (2.5 micron).
- the thickness of the film structure used in the manufacture of the voucher of the present invention ranges from 0.5 mil (12.7 micron) to 10 mil (254 micron), preferably 1 mil. It is 5 mil (12.7 micron) from mi (25.4 micron) force.
- the design of the voucher film structure of the present invention is flexible. specific P
- LLDPEs eg, VLDPE and ULDPE
- VLDPE and ULDPE LLDPE
- ULDPE a vertical forming, filling and sealing machine
- the method of the present invention can be accomplished using either the well-known technique in the art, the blown tube extrusion method or the cast extrusion method.
- Manufacture polyethylene film structures used in voucher manufacturing This blown tube extrusion method is described, for example, in Modern Plastics Mid-October 1989 Encylopedia Issue, Vol. 66, Number 11, 264 to 266.
- the method of cast extrusion is described in, for example, Modern Plastics Mid-October 1989 Encylopedia Issue.
- the bouch embodiment of the present invention is a hermetically sealed container filled with “fluid material”.
- Fluid material means a material that can flow or be pumpable under gravity, but the term “fluent material” does not encompass gaseous materials.
- This fluid material includes non-carbonated liquids (eg, milk, water, juice, wine, etc.) and carbonated liquids (eg, soda, beer, water, etc.); emulsions (eg, ice cream, etc.).
- the vouches of the present invention are particularly useful for packaging liquids (eg, milk).
- the flowable material may also include an oily liquid (eg, cooking oil or motor oil).
- the film structure for a bouch of the present invention is manufactured, the film structure is cut so as to have a width desired for use in a usual vouching machine.
- the vouch embodiment of the present invention is manufactured using a so-called form-filling and sealing machine that is well known in the art.
- the bouch embodiment of the present invention includes a bouch which is a tubular member having a vertical wrap seal and a horizontal seal so that a "pillow-shaped" vouch is generated when the flowable material is packed into the vouch. .
- the bouch embodiment of the present invention has a fin seal around the three sides of the tubular member, that is, a top seal and a vertical side seal, and a fluid material.
- the bottom sealed to the bottom of the tubular member is substantially concave or "bore” such that the bottom is substantially semicircular or “bowed” in cross section when viewed in cross-section in a voucher.
- a bouch which is a tubular member having a member which is in a "shape”. This voucher is a so-called “Enviro-Pak” voucher known in the art.
- VFFS Vertical Form Fill and Seal
- Examples of commercially available VFFS machines include VFFS machines from Hayssen or Prepac.
- VFFS machines are described in the following literature: F. Lewis "Form-Fi 11-Seal", Packaging Encylopeaia, 180, 1980 ⁇
- VFFS packaging method a sheet of the plastic film structure described in this specification is supplied to a VFFS machine, and the sheet is formed into a continuous tube in a tube forming section.
- the capacity of the patch of the present invention can be changed.
- the bouch is generally filled with 5 to 10 liters of flowable material, preferably from 10 to 8 liters, more preferably from 1 to 3 liters. 5 liters can be inserted.
- the vouches of the present invention give excellent performance results when tested in a 5 foot (1.52 m) drop test—a test as defined herein. Under this 5-feet (1.52 m) drop test, this bouch will preferably show a broken percentage of 40 percent or less, more preferably 2 percent. 0 no ,. It is less than 1 percent, especially less than 10 percent.
- the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ '') or ( ⁇ '') used in the film of the package is preferably a single polymer. Use as a component. However, other polymers may be blended together with the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ''') or ( ⁇ '''') by blending and ⁇ or multi-layer extrusion.
- This film can be processed, film hardness, film nourier properties, film strength, film melting properties or other desired film properties by laminating and laminating. May be modified.
- Some useful polymer blend components include, for example, ethylene-vinyl acetate copolymer (EVA), ethylene / vinyl alcohol copolymer (EV ⁇ H), polybutylene (PB), and density.
- EVA ethylene-vinyl acetate copolymer
- EV ⁇ H ethylene / vinyl alcohol copolymer
- PB polybutylene
- 0.94 Linear high density polyethylene ethylene les down from 1 0. 9 6 5 g Zcm 3 (HDPE), and density by Ri manufacture conventional Ziegler first catalyst of 0.8 7 forces et 0. 9 4 g Z cm 3 Including low-density linear low-density polyethylene (LLDPE).
- the ethylene copolymer composition (A), (A '), (A ") or ( ⁇ "") has at least about 50% of this blend composition.
- the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ '') or ( ⁇ ''') may be added to the ethylene copolymer composition ( ⁇ ), to the extent that it does not interfere with the function of the batch-containing package.
- Agents such as plasticizers, antioxidants, phosphites, cling additives, heat stabilizers, light stabilizers (eg, Cyasorb® UV 531 benzophenone manufactured by Cyanamid and Processing, such as Tinubin TM 622 solder amide light stabilizers manufactured by Chiba Gey Corp., pigments (eg, titanium dioxide, calcium carbonate, black iron, etc.), processing Auxiliaries (eg polyethylene glycol, fluoropolymers, fluoroelastomers, waxes, etc.), flame retardants (eg Amgard, a phosphorus-based flame retardant manufactured by Albright and Wilson Americas) (Trademark) CPC 102, etc.), lubricants (eg, Waxes, ste
- Films and film structures having the novel properties described herein can be manufactured using conventional hot blown film or cast film manufacturing techniques. is there. It is also possible to use a biaxial orientation method, for example, a tenter-frame or double-bubble method, in cooperation with this normal manufacturing technique.
- a biaxial orientation method for example, a tenter-frame or double-bubble method
- the usual hot brown film method is described in, for example, “The Encyclopedia of Chemical Technology”, Kirk-Othmer, 3rd edition, John Wiley & Sons, New York, 1981, Vol. 16, pp. 416-417 and 18 Vol. 191-192.
- Biaxially oriented film manufacturing methods such as the "double bubble” method as described in US Pat. No. 3,456,044 (Pahlke), and US Pat. No. 4,865,920 (Golike et al.), US Pat. No.
- the film may be a single-layer or multi-layer film; at least one layer of the film structure, preferably the inner layer, includes At least one of the copolymer systems ( ⁇ ), ( ⁇ ′), ( ⁇ ′ ′) or ( ⁇ ′ ′) is used.
- This inner layer is the layer adjacent to the material to be included in the package. ⁇ Society of Plastics Engineers RETEC Proceedings, '' June 15-17 (1981), ⁇ WJ Schrenk and R. Finch Power 5 'in Coextrusion For Barrier Packaging on pages 211-229
- the inner layer may be co-extruded with another layer (s) or the inner layer may be laminated to another layer (s) in a secondary operation.
- Packaging Applications (Technomic Publishing Co., Inc.
- Extrusion coating is yet another technique for producing materials for multilayer packaging.
- Extrusion coating like cast film, is a flat die technology.
- the film layer can be extruded onto the substrate in either a single layer or co-extruded extrudate form.
- the ethylene copolymer composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′ ′) or ( ⁇ ′ ′, ) Constitute at least one layer, preferably the inner layer, of the entire multilayer film structure.
- Other layers of the multilayer structure include, but are not limited to, a single layer and / or a tie layer and a single or structural layer. A variety of materials can be used in such layers, and some of these can be used as two or more layers in the same film structure.
- ethylene-vinyl alcohol ( ⁇ V0 ⁇ ) copolymers examples include ethylene-vinyl alcohol ( ⁇ VDC), polyvinylidene chloride ( ⁇ VDC), polyethylene terephthalate (PET) , Oriented Polypropylene (OPP), High Density Polyethylene (HDPE), Ethylene / Vinyl Acetate (EVA) Copolymers, Ethylene Noacrylic Acid (EAA) Copolymers, Ethylene / Metaacrylic EMAA copolymers, LLDPE, HDPE, LDPE, nylon, adhesive graphite polymers (for example, polyethylene laid with maleic anhydride) and paper. included.
- the multilayer film structure generally includes 2 to 7 layers.
- the thickness of a single-layer or multi-layer film structure is typically 0.2 Mil (5 micron) to 15 mi (381 micron) (full thickness), preferably 1 mi (25.4 micron) to 5 mi ( 1 2 7 micron).
- the inner layer containing this substantially linear ethylene Z ⁇ -olefin polymer is typically 0.2 mils (5 mils). From 1 to 15 mils (381 miclons), preferably 1 mil (25.4 microns), and 5 mils (12.7 microns)
- Films and film structures made from the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ '' '' ') are required for final use.
- Process into knots, liners or packaging materials as appropriate.
- a tub liner can be used to sequentially blend a variety of materials, where the contents and liner are moved from one tab to another. Blend with other ingredients and optionally sent to a strong mixer.
- additives used in rubber manufacturing may be packaged in a bag, and the entire bag containing its contents is added to the process without opening during rubber manufacturing.
- the use and manufacturing techniques of such batch-containing bags are described in U.S. Pat. No. 4,394,473, U.S. Pat. No. 5,120,787, U.S. Pat. No. 4,248,348, and European Patent Application Publication. It is well known in the industry, as described in 0270902 and Canadian Patent No. 2,053,051.
- the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ '') or ( ⁇ '''') shows excellent processability with respect to the production of a blown film. do it P
- the ethylene copolymer composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′ ′′) or ( ⁇ ′ ′ ′) is made of carbon and hydrogen atoms.
- Use of batch-containing films and bags made from acrylic acid or ethylene / methacrylic acid copolymers (as described in European Patent Application Publication No. 0 270 902).
- the ethylene copolymer composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′′) or ( ⁇ ′′) is particularly useful in the rubber industry. Compatible with various elastomer additives.
- the material (s) in this batch-containing bag is free flowing material (ie, the material (s) flow easily under gravity under its own weight). Or they may be materials that do not exhibit free flow (ie, the material (s) do not flow under gravity under its own weight).
- the material (s) may be of a variety of forces and typically include materials that do not exhibit free flow, such as unvulcanized rubber, uncrosslinked elastomers and tars.
- Typical materials that exhibit free flow include clay, silicates, calcium carbonate, cadmium getyldithiocarbanoate, tetramethyl thiuram disulfide, benzothiazyl disulfide, Selected from substituted thioesters and amine-type antioxidants, aniline anti-ozonates, diamines, and / or sulfur, sulfur-donating compounds and peroxides.
- Thiourea hardeners UV agents selected from substituted benzotriazoles and substituted benzophenones, color pigments selected from iron oxides, titanium dioxide and organic dyes, black pigments, oxidation Reinforcement pigments selected from zinc and hydrated silicon compounds, processing aids, such as silicon dioxide, pumice, stearates and rubber processing oils, for a class of crosslinked elastomers, for unvulcanized rubber compounds Includes materials, ground tires, herbicides, fungicides, fungicides, and chlorinated polyethylene (CPE). Free-flowing materials that are effectively included in the packages of the present invention include solids in addition to liquids.
- rubber processing oils are typically used in small quantities (eg, 0.5 to 10 weight percent), which are combined with at least one other compounding material. Mix. All the materials that can be packaged using the novel package of the present invention are not included in the materials listed above, and are not limited thereto.
- the package is a knob that can be put in or wrapped in a knock. It relates to materials for hands and also to mixtures of these with additives, for example rubber processing oils.
- a film is generally attached around the rubber, especially in the case of wrapped form, the film is wrapped tightly and then the film is It is usually adhered under tension to heat seal itself to complete the package. This, It is desirable, but not necessary, to heat seal the film when molding the package.
- the products made from this batch inclusion package will vary according to the type of material included in this package.
- Includes flat animal feed and wire For example, the packaging of crushed tires in the manufacture of asphalt, the packaging of titanium dioxide in the manufacture of animal feed, and the packaging of CPE in the manufacture of one-film coatings, using the batch-containing package of the present invention. Add the specific ingredients listed above.
- Other products include various rubbers (eg, by packaging the rubber or rubber additive in a batch-containing film as described herein).
- Packaging of waste materials eg heavy spills or waste plastic). Energy can be produced by placing the entire package in an incinerator. Packaging and reusing waste plastic and other materials can also form other useful products, such as garbage bags or park benches.
- Knock-in box interior container
- the bag-in-box interior container is formed of a film comprising the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' '' '). ⁇
- the thickness of the film that forms the inner container for the knock-in box varies depending on the specific contents or manufacturing method.
- the wall of the bag-in-box interior container according to the present invention is:
- the blocking force s is less than 1.0 g Z cm
- the number of pinholes generated in an area of 20.5 cm X 28.0 cm after reaching 0 times is 2 or less, (iii) It is preferable that the film be made of a film whose bending resistance is 90,000 times or more measured in accordance with JISP-8111. Further, a film in which the neck-in during molding is 20 cm or less on one side is preferable.
- the bag-in-box interior container is formed of a single-layer film comprising the ethylene-based copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' '' ').
- the film consisting of ( ⁇ ⁇ ), (), ( ⁇ '') or ( ⁇ ''), and another resin (eg, nylon, ethylene-vinyl alcohol copolymer, It may be formed of a so-called multilayer film in which a film made of polyvinyl alcohol ( ⁇ V 0 ⁇ ), an adhesive resin or the like is laminated.
- the interior container for a knock-in box has, for example, a substantially cubic shape as a whole, and has a lid attached to an upper end thereof, and corresponds to a peripheral portion when the cube is cut diagonally. Where there is a thick wall of the heat seal.
- the interior container for a noggin box is formed so that one container half can be inserted and inserted so as to overlap the other container half.
- the inner container for bag-in-box is filled with a liquid or the like, and is stored or transported in a hard outer container such as a cardboard box, and an empty container is replaced with one half of the container on the other. It is stored or transported in a form that is folded and inserted into the container half.
- An interior container for a knock-in box can be manufactured, for example, by the following method.
- the film is made of the composition (A), (A '), ( A ") or a single-layer film consisting of ( ⁇ ','), and may be a film composed of the composition ( ⁇ ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ', ').
- a multi-layered film consisting of a film made of different resins and another resin (Nylon, ethylene-vinyl alcohol copolymer resin ( ⁇ V0 ⁇ ), polyvinyl alcohol, adhesive resin, etc.) A film is also acceptable.)
- Such a knock-in box is excellent in heat stability, blocking resistance, pinhole resistance and bending resistance, and is economical, so that alcohol, vinegar, Widely used as a container for storing various liquids such as photographic developer, bleach, and bactericide.
- the medical container is a bag made of a multilayer film, a bag made of a single-layer film, or a bottle made of a single layer.
- the single-layer, single-layer film and single-layer bottle are formed from the above-mentioned ethylene copolymer composition (A), (A '), "") or ""').
- Medical containers can be manufactured using water-cooled or air-cooled inflation methods, T-day methods, dry lamination methods, extrusion lamination methods, blow molding methods, etc. It can be manufactured by As the molding method for medical bags, the inflation method and the co-extrusion T_Die method are preferred from the viewpoints of hygiene and economy, and hollow molding is used for the molding of medical bottles. I like the law.
- the thickness of the medical container usually ranges from 0.05 to 1.0 Omm, preferably from 0.1 to 0.7 mm, and more preferably from 0.15 to 0.3 mm It is. If the thickness of the container is 0.05 mm or more, the impact resistance is good and there is no practical problem.
- Such medical containers do not lose transparency even after sterilization, are excellent in heat resistance, and do not undergo shear deformation.
- the heat-resistant container is a bag made of a multi-layer film, a bag made of a single-layer film, a multi-layer bottle, a single-layer bottle, and the like. At least one layer of the multi-layer film and a single-layer film are used. At least one layer and a single-layer bottle of the film or the multilayer bottle may contain the ethylene-based copolymer composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′ ′) or ( ⁇ ′ ′ ′). ).
- heat-resistant container has a multi-layer structure
- Nylon, polyester, polyvinyl alcohol, etc. may be used.
- Heat-resistant containers can be manufactured using water-cooled or air-cooled inflation methods, T-die methods, dry lamination methods, extrusion lamination methods, and blow molding methods. It can be manufactured more.
- the inflation method and the co-extrusion T-die method are preferred in terms of hygiene and economy, and the heat-resistant container is in the form of a bottle.
- the blow molding method is preferred.
- the thickness of the heat-resistant container ranges from 0.05 to 1.0 mm, preferably from 0.1 to 0.7 mm, and more preferably from 0.15 to 0.3 mm. is there. If the thickness of the container is 0.05 mm or more, the impact resistance is good and there is no practical problem.
- the heat-resistant container of the present invention has a haze (ASTMD-103-61) force after heat sterilization. It is 30% or less, preferably 20 to 0%.
- the heat-deformation start temperature of the heat-resistant container is 115 t: or more, and the thickness of the retort food container is usually in the range of 0.05 to 1.0 mm.
- the thermal deformation onset temperature is measured as follows. In other words, a bag or bottle sample made of a molded film is sterilized by hot water sterilization at a sterilization temperature of X30 minutes using an Alps RK-416 small heat-resistant high-pressure steam sterilizer. The change is evaluated by visually observing the sample removed from the container. Starting with the sterilization temperature at 110, increase the sterilization temperature by 1 after each sterilization. This operation is repeated, and when the sample removed from the sterilizer is deformed for the first time, the sterilization temperature is set as the deformation start temperature.
- Such a heat-resistant container for example, a container for retort food does not lose its transparency even after sterilization, and is excellent in heat resistance and impact resistance.
- Elastic fiber
- Elastic fibers are fibers that exhibit a recovery of at least 50% with a strain of 100%, and include ethylene copolymer compositions ( ⁇ ), ( ⁇ ′), ( ⁇ ′). ') Or ( ⁇ ' '').
- Fibers are typically classified according to the diameter they have.
- Monofilament fibers are generally defined as having an individual fiber diameter of at least about 15 denier per filament, usually at least about 30 denier.
- Fine denier fibers are generally applied to fibers having a diameter of less than about 15 denier per filament.
- Microdenier fiber is generally defined as a fiber with a diameter of less than 100 micron. Fibers can also be classified by the method by which they are produced, for example, monofilament, continuous wound microfilament.
- the grease is generally suitable for 0.01 g / 10 min to 100 g / 10 min. Is between 0.1 g and 10 g and 10 g and 10 g of small denier fiber (fiber whose diameter is generally equal to or less than 15 denier Z filament). The preferred case is from 5 g ZlO min to 250 g / 10 min.
- Ethylene copolymer composition (A) used in the production of this elastic fiber, ( ⁇ '), ( ⁇ ''') or ( ⁇ '') also contain additives, such as antioxidants, phos- phos, to the extent that they do not interfere with the improved fiber and fabric properties that we have found. It may also include phytes, cling additives, anti-block additives and pigments.
- homofil fibers can be produced using the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ '') or ( ⁇ ''').
- Homofil fibers are fibers that have a single region (domain) and no other different polymer regions (as do bicomponent fibers).
- Such homofil fibers include staple, snowbond or melt-brown fibers (eg, U.S. Patent No. 4,340,563 (Appel et al.); U.S. Patent No. 4,663,220). Wisneski et al.), And US Pat. No. 4,668,566 (Braun) or U.S. Pat. No.
- Stable fibers can be melt spun (ie they can be directly extruded to the final fiber diameter without additional drawing) forces, or melt spun. After producing a fiber having a large diameter, it can be heated or cold drawn to the desired diameter using conventional fiber drawing techniques.
- the novel elastic stable fiber disclosed herein can also be used as a bonding fiber, and in particular, here, the novel elastic fiber has a matrix surrounding it. It has a lower melting point than fiber. In bonding fiber applications, typically, the bonding fiber is blended with other matrix fibers and then the entire structure is heated, where the heat is applied.
- the binding fibers are melted and the surrounding matrix fibers are connected.
- Typical matrix fibers that benefit from the use of this novel elastic fiber include, but are not limited to, force (poly (ethylene + terephthalate) fiber, cotton fiber, nylon fiber). Includes loft fibers, polypropylene fibers, other unevenly branched polyethylene fibers, and linear polyethylene homopolymer fibers.
- the diameter of the matrix fiber can be changed according to the end use.
- melt-spun fibers made from this ethylene copolymer composition (A), '), ( ⁇ ' ') or ( ⁇ '' '') show a higher recovery rate for the larger diameters.
- the recovery rate is approximately the same as that of the fiber that has been cold-drawn to have the same diameter. The same. Since the elasticity here is not the result of an orientation that would be destroyed by the heat treatment, a product is obtained that has the ability to retain its elasticity even after subsequent thermal exposure.
- a bicomponent fiber using the ethylene copolymer composition (A), () ′), (', ′) or ( ⁇ ′′ ′′). At least a part of the bicomponent fiber is used as the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' ').
- the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') ) Or ( ⁇ '' ⁇ ') can be in either the shell or the core.
- ethylene copolymer compositions ( ⁇ ), ( ⁇ '), ( ⁇ ' '') or ( ⁇ '' '') are used independently as the shell and core in the same fiber. It is also possible to do so, in which case preferably both components exhibit elasticity, and in this case, in particular, the melting point of the shell component is lower than the melting point of the core component.
- Other types of bicomponent fibers are also within the scope of the present invention, including side-by-side fibers (e.g., fibers having discrete polymer regions, and
- the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' ''') constitutes at least a part of the fiber surface). Such structures are included.
- the shape of the fiber is not limited.
- a typical fiber is a force with a circular cross section?
- the fibers have different shapes, such as a tri-lobal shape or a flat (ie, "ribbon-like") shape.
- the elastic fibers disclosed herein are not limited by fiber shape.
- Fiber diameter can be measured and reported in a variety of ways. In general, the fiber diameter is measured in denier per fiber. Denier fiber Is a textile term defined as the number of grams of fiber per meter of length. Monofilaments generally apply to extruded strands with a denier per filament of 15 or more, usually 30 or more. Small denier fibers generally apply to fibers having a denier of about 15 or less. Microdenier (also known as microfiber) generally applies to fibers having a diameter of about 100 micrometer or less. In the case of the novel elastic fiber disclosed in the present specification, the diameter can be changed widely without substantially affecting the elasticity of the fiber.
- the denier of this fiber can be adjusted to match the function of the finished product, and preferably from 0.5 to 30 denier Z-filament for meltblown. 1 to 30 denier Z-filament in case of 1-, 20-, 0-, 0-, 1-, 20-, 100-denier Z-filament Will be more
- Fabrics made from the novel fibers include both woven and non-woven fabrics.
- Non-woven fabrics, including nonwoven fabrics can be manufactured in a variety of ways, including spunbonding continuous fibers in a single continuous operation by fuzzing and bonding staple fibers with heat. Melt blown the fibers or fibers and then calendering the resulting web or gluing with heat to produce the dough. Manufacturable. Such various nonwoven fabric manufacturing techniques are well known to those skilled in the art.
- the present disclosure is not limited to any particular method.
- Other structures made from the above fibers are also included within the scope of the invention, including, for example, the novel fibers and other fibers (eg, poly (ethylene terephthalate) (PET) or Blends with cotton, etc.).
- PET poly (ethylene terephthalate)
- Blends with cotton, etc. are also included within the scope of the invention, including, for example, the novel fibers and other fibers (eg, poly (ethylene terephthalate) (PET) or Blends with cotton, etc.).
- PET poly (ethylene terephthalate)
- Blends with cotton etc.
- the term "consisting essentially of” as used in the claims herein means the ethylene-based copolymer composition (A), ( ⁇ '), ( ⁇ ' '') or ( ⁇ '' ') means that it can contain additional materials that do not substantially affect the elasticity of this fiber or fabric.
- Such useful non-limiting additive materials include pigments, antioxidants, stabilizers, and surfactants, such as US Patent No. 4,486,552 (Niemann), US Patent No. 4,578,414. (Sawyer et al.) Or U.S. Pat. No. 4,835,194 (as disclosed in Bright et al.).
- Products that can be manufactured using the novel elastic fibers and fabrics disclosed in this specification include composite fabric products (for example, diapers) for which it is desired to have an elastic portion. Is included.
- elastic parts such as a diaper's waistband part for preventing diapers from sliding down and a legband part for preventing leakage, are desired (US Pat. No. 4,381,781 (Sc. i araf fa)). This elastic part often helps to improve the conforming and / or fixing system for a good combination of comfort and reliability.
- the novel elastic fibers and fabrics disclosed herein can also be used to produce structures that combine elasticity and breathability.
- novel elastic fibers and fabrics disclosed herein are also U.S. Patent It can be used in a wide variety of structures, such as those described in 2,957,512 (Wade).
- layer 50 of the structure described in U.S. Pat. No. 512 i.e., a component that exhibits elasticity
- the non-elastic material is flattened, pleated, creeped, etc.
- the novel elastic fibers and / or fabrics can be attached to non-elastic fibers, fabrics or other structures by fusion bonding or using an adhesive.
- the elasticized component may be pre-stretched before installation or may be gathered or sheared by heat shrinking the elasticized component after installation. It is possible to manufacture elastic structures with fins.
- novel elastic fibers described herein can also be used in a spunlaced (or hydraulically entangled) method to produce novel structures.
- the elastic sheet (12) disclosed in U.S. Pat. No. 4,801,482 (Goggans) can be manufactured using the novel elastic fiber Z fabric described herein. Can be.
- a continuous filament exhibiting elasticity as described herein can also be used in woven applications where high resilience is desired.
- the toughness and shrinkage of the novel elastic fibers and fabrics disclosed herein are adjustable, which allows for the use of, for example, rice if necessary.
- the design may be flexible with respect to varying contractile forces.
- U.S. Pat. No. 5,037,416 (Alien et al.) Describes the benefits of a conformable topsheet by using elastic ribbons (see U.S. Pat. No. 4,416,416). See item 19).
- the novel elastic fiber may perform the function shown by member 19 of the '416 patent, or may be used in a fabric form that provides the desired elasticity.
- the new elastic fiber has a low melting point (the melting point of the polymer and the density of the polymer are essentially linearly related), and as a result, US Pat. No. 347 (Harpell et al.), A blend of polyethylene fibers with very high molecular weight (eg, Spectra TM fibers manufactured by Allied Chemicai) and this new elastic fiber.
- this low melting point elastic fiber connects the high molecular weight fibers without melting the high molecular weight polyethylene fibers and thus the high molecular weight fibers exhibit. Strength and integrity are maintained.
- the foamed molded article can be formed into various shapes including a rod shape, a tube shape, a tape shape, a sheet shape, etc., and is used as a buffer, a heat insulating material, a base material for a compress, etc. .
- the foamed molded article is obtained by mixing the ethylene copolymer composition (A), (A '), (A ") or ( ⁇ ' '' ') with a foaming agent, and heating or reducing the pressure. It is produced by generating gas bubbles in a resin molded body by gasification of a foaming agent or foaming of a decomposition gas.
- Examples of the method for producing a foamed molded article include the following production method.
- a physical foaming agent is press-fitted through a press-fitting hole provided in the middle of the extruder, and is extruded from a die having a desired shape to continuously obtain a foam.
- Physical foaming agents include volatile foaming agents such as fluorocarbon, butane, pentane, hexane and cyclohexane, and inorganic gas foaming agents such as nitrogen, air, water, and carbon dioxide. Is mentioned.
- a foam nucleating agent such as calcium carbonate, talc, clay, magnesium oxide or the like may be added.
- the mixing ratio of the physical foaming agent is usually 5 to 60 parts by weight with respect to 100 parts by weight of the composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' '' '). It is preferably from 10 to 50 parts by weight. If the blending ratio of the physical blowing agent is too small, the foaming property of the foam decreases, while if it is too large, the strength of the foam decreases.
- the mixing ratio of the organic thermal decomposition type foaming agent is usually 1 to 50 parts by weight with respect to 100 parts by weight of the composition (A), (A '), (A ") or ( ⁇ ") Parts, preferably 4 to 25 parts by weight If the proportion of the organic pyrolytic foaming agent is too small, the foaming
- the above ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ') or ( ⁇ ''') It is formed into a sheet-like or block-like shape by a press or extruder, and then the molded body is put into a pressure vessel, and the physical foaming agent is sufficiently dissolved in the resin. And then reducing the pressure to obtain a foam. It is also possible to fill the pressure vessel filled with the molded body with a physical foaming agent at room temperature, pressurize it, remove it after depressurization, and heat it in an oil bath, oven, etc. to foam it. It is.
- the crosslinking method includes a method in which a peroxide radical generator mixed in a resin is thermally decomposed and crosslinked, crosslinking by irradiation with ionizing radiation, ionization in the presence of a polyfunctional monomer.
- Crosslinking by irradiation with radiation and silane crosslinking can be exemplified.
- a polyfunctional monomer and other compounding agents are melt-kneaded at a temperature lower than the decomposition temperature of the pyrolytic foaming agent to form a sheet.
- the composition ( ⁇ ), ( ⁇ '), ( ⁇ ' '') or ( ⁇ '' ') is crosslinked by quantitatively irradiating the obtained foamable resin composition sheet with ionizing radiation.
- the sheet is foamed by heating it above the decomposition temperature of the foaming agent.
- ionizing radiation examples include an ⁇ -ray, a / 3-ray, a y-ray, and an electron beam.
- peroxide crosslinking and silane crosslinking can be performed instead of irradiation crosslinking with ionizing radiation.
- the composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′ ′) or ( ⁇ ′ ′) is added to the composition ( ⁇ ), ( ⁇ ′ ′) or ( ⁇ ′ ′) as long as the object of the present invention is not impaired.
- other polymers can be blended in a small amount without departing from the spirit of the present invention.
- Such a foam is excellent in flexibility and toughness.
- the foam structure is composed of the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' ').
- Other suitable ethylenic polymers are low density polyethylene (LDPE), medium density polyethylene (MDPE) and high density polyethylene (HDPE) (see, for example, US Pat. No. 4,076,698).
- ethylene / vinyl acetate copolymers ethylene / vinyl acetate copolymers, copolymers of ethylene and ethylenically unsaturated carboxylic acids, and poly-ethylenes And homo and copolymers of Other suitable polymers include polystyrene (including high impact polystyrene), styrene-butadiene block copolymer, polyisoprene and other rubbers. Blends containing a major proportion of high melting resin are preferred.
- the composition ( ⁇ ), ( ⁇ '),' ') or' '' ') for producing the foam structure, or a blend containing these, is called an ethylene polymer material.
- ethylene Le emissions based poly Ma first material is rather to like contains 5 0 by weight 0/0 above, rather then preferred Ri yo 7 0 wt 0/0 or more ethylene les Nmono mer units.
- Ethylene polymer material can be completely or wholly ethylene You can start with nothing.
- Preferred blends are ethylene copolymer compositions ( ⁇ ), ( ⁇ '), ( ⁇ ''') or ( ⁇ ''''), and other conventional ethylene polymers, For example, it contains LD-II, HD-II, Ethylene Acrylate Acrylate ( ⁇ - ⁇ -) and LLDPE.
- Additives such as antioxidants (eg, hindered phenols (Irganox® 1010), phosphites (eg, Irgafos® 168)), pigments, etc.
- antioxidants eg, hindered phenols (Irganox® 1010), phosphites (eg, Irgafos® 168)
- pigments etc.
- the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ') or ( ⁇ '' ') to the extent that it does not interfere with the improved properties discovered It can be included inside.
- This foam structure can be manufactured by a conventional extrusion foaming method.
- the structure is generally heated by heating the ethylene-based polymer material to form a plasticized or molten polymer material, and having a blowing agent therein to form a foamable gel. It can be prepared by extruding the gel through a die to form and form a product.
- the polymeric material Prior to mixing with the blowing agent, the polymeric material is heated to a temperature above its glass transition temperature or melting point.
- the blowing agent may be introduced or mixed into the molten polymer material by any means of the prior art such as extruders, blenders, blenders. The blowing agent suppresses the substantial foaming of the molten polymer material and disperses the blowing agent substantially uniformly.
- the nucleating agent may be blended into the polymer melt or dry mixed with the polymer material prior to plasticizing or melting.
- the foamable gel is usually cooled to a lower temperature to optimize the physical properties of the foam structure.
- the gel is then extruded or transported through a die of desired shape into a vacuum or lower pressure zone to form a foam structure.
- the lower pressure zone is a pressure lower than the pressure maintained before the foamable gel was extruded through the die.
- the lower pressure is a higher force (vacuum) above or below atmospheric pressure, preferably at atmospheric pressure.
- This structure may be processed into a coherent strand by extrusion of an ethylene polymer material through a multi-orifice die.
- Contact between adjacent streams of molten extrudate occurs during the foaming process, and the contacting surfaces have sufficient adhesion to form an integral form structure.
- the orifices are arranged so that they adhere to each other.
- the stream of molten extrudate exiting the die assumes a strand or profile, which desirably foams, agglomerates, and adheres to one another to form an integral part.
- the individual strands or profiles that have been agglomerated do not delaminate the strands at the stresses encountered when preparing, shaping, and using the form. As such, it should remain attached in one piece.
- a method and apparatus for producing a foam structure in an aggregated strand can be found in US Pat. Nos. 3,573,152 and 4,824,720.
- This form structure is also found in U.S. Pat. No. 4,323,528. As such, it may be formed by a cumulative extrusion method.
- a low-density foam structure having a large side cross-sectional area is formed by: 1) forming a gel of an ethylene-based polymer material and a foaming agent under pressure; The viscosity is formed at a temperature that is sufficient to retain the blowing agent as the gel expands.2) Extrude the gel into a holding zone maintained at a temperature and pressure that does not cause the gel to foam.
- the holding zone closes the pellet die and the die orifice surrounding the orifice opening to the lower pressure zone, which causes the gel to foam.
- This form structure can also be processed into non-crosslinked form beads suitable for molding the product.
- discrete resin particles such as particulate resin pellets
- a liquid medium such as water, in which the resin is substantially insoluble
- a blowing agent by introducing the blowing agent into a liquid medium; and in air to form foam beads. Or discharge quickly into the decompression zone. It is.
- This method is fully taught in U.S. Patent Nos. 4,379,859 and 4,464,484.
- the styrene monomer is suspended in a pellet system to form a graphitic copolymer with the ethylene polymer material.
- the tuft may be impregnated.
- the polyethylene / polystyrene copolymer beads are cooled and discharged from the container without substantial foaming.
- the beads are then foamed and molded by conventional foamed polystyrene bead molding methods.
- a method for producing a polystyrene / polystyrene copolymer bead is described in U.S. Pat. No. 4,168,353.
- the form beads may then be formed by any means known in the art, e.g., loading the form beads into a mold and agglomerating the beads to form a product.
- the beads are formed, for example, by heating the beads with steam to cause fusion.
- the beads may be impregnated with air or other foam at elevated temperature and pressure before loading into the mold.
- the beads can be heated before loading.
- the form beads can then be formed into blocks or shaped articles by any suitable molding method known in the art (some methods are described in U.S. Pat. Nos. 3,504,068 and 3,3. 953, 558.)).
- a good teaching of the above methods and molding methods can be found in the above publications of P. Park, pl91, p-197-198 and p-227-229.
- Blowing agents useful in making this foam structure include inorganic blowing agents, organic blowing agents and degradable chemical blowing agents.
- Suitable inorganic blowing agents include carbon dioxide, nitrogen, argon, water, air, nitrogen and helium.
- Organic Blowing agents include aliphatic hydrocarbons having 16 carbon atoms, fatty alcohols having 13 carbon atoms, and fully or partially halogenated fats having 14 carbon atoms. Group hydrocarbons. Aliphatic hydrocarbons include methane, ethane, propane, n-butane, isobutane, n-pentane, isopentan and neopentane.
- Fatty alcohols include methanol, ethanol, n-pronol and isopropanol.
- Fully or partially halogenated aliphatic hydrocarbons include fluorocarbons, fluorocarbons, and fluorofluorocarbons.
- fluorocarbons include Futsudani methyl, Perfluoromethan, Futuichethyl, 11-Difluororotan (HFC-152a) 1 1 1-Trifluorene (HFC -143a) 1,1,1,2-tetrafluoroethane, 22-difluorene, 1 1 1-trifluorene? , Perfluoron, dichloropron, difluorene. Includes perfluorobutane, perfluorocyclobutane.
- Partially halogenated chlorocarbons and chlorofluorocarbons for use in the present invention are methyl chloride, methylene chloride, ethyl chloride, 111- Trichloroethane, 11-Dichloro-1 -Fluoroethane (HCFC-141b) 1-Curo mouth-11-Difluorofluoroethane (HCFC-142b) 1,1-Dichloro Mouth—Includes 222-trifluorene (HCFC-123) and 1-chloro-122-tetrafluorobenzene (HCFC-124).
- Completely halogenated black mouth Fluorocarbon-Bon is Trichiro mouth monofluorometan (CFC-11), Dichlorodifluoromethane (CFC-12), Tric Port Tri-Fluoro-Letane (CFC-113) 1 1 1-Trifluore-Lotane, Pentafluoro-Letane, Zykrotote-Trafflölö-Letane (CFC-114) Black mouth heptafluoroprono II. And cyclohexafluoroprono.
- Chemical blowing agents include azodicalbonamide, azodisobutyronitrile, benzenesulfone hydrazide, 4,4-oxybenzenes' rufonylsemicarnodide, P-toluenesulfonylsemicarnodide, and azide. Includes sodium dodecalbonate, N, N'-dimethyl-dinitosoterephthalamide and trihydrazinotriazine.
- Preferred blowing agents include Isobutane, HFC-152a and mixtures thereof.
- the amount of blowing agent to be incorporated into the polymer melt to produce the form-forming gel is from 0.2 to 5.0 gram moles Z kg polymer, preferably 0 5 to 3.0 gram moles Z kg polymer, and most preferably 1.0 to 2.5 gram moles g polymer
- additives such as stability control agents, nucleating agents, inorganic fillers, pigments, antioxidants, acid scavengers, UV absorbers, flame retardants, processing aids and extrusion aids are used in this formulation. May be included in the framework structure.
- Stability control agents may be added to this foam structure to improve dimensional stability.
- Preferred stability control agents include amides and esters of C10-C24 fatty acids. Such stability control agents are found in US Pat. Nos. 3,644,230 and 4,214,054.
- the most preferred stability control agents include stearyl stearamide, glycerol monostearate, glycerol monobeneates and sorbitol monostearate. Usually, such stability control agents are used in amounts ranging from about 0.1 to about 10 parts per 100 parts of polymer.
- This foam structure shows excellent dimensional stability.
- Preferred Fo The foam recovered to more than 80% of its initial volume, which was measured 30 seconds after foaming. Volume is measured by any suitable method, such as volume exclusion of water.
- nucleating agents may be added to control the size of the foam in the form.
- Preferred nucleating agents include calcium carbonate, talc, cres, titanium dioxide, silica, barium sulfate, diatomaceous earth, mixtures of citric acid and sodium bicarbonate, and the like. Contains inorganic substances. The amount of nucleating agent used may range from about 0.01 to about 5 parts by weight per 100 parts by weight of polymer resin.
- the foam structure is substantially uncrosslinked or uncrosslinked.
- the alkenyl aromatic polymer material containing the foam structure is substantially non-crosslinked.
- the foam structure contains less than 5% gel by Method A of ASTM D-2756-84. Some crosslinking that occurs naturally without the use of crosslinking agents or radiation is acceptable.
- the form is from 0.05 to 5.0, more preferably from 0.2 to 2.0, and most preferably from 0.3, according to ASTM D3576. It has an average bubble size of ⁇ 1.8 millimeters.
- the form structure may take on any physical form known in the art, such as extruded sheets, rods, planks and profiles.
- the foam structure may be formed by molding foamable beads into any of the above shapes or any other shape.
- the foam structure may be closed-cell or open-cell. Good Or, according to ASTMD 2856-A, this form contains 80% or more of closed cells.
- Such a tougher and more resilient form structure would be very useful in sport and leisure applications and in cushion packaging applications.
- the foamed structure is composed of the ethylene-based copolymer composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′ ′) or ( ⁇ ′ ′ ′), and is strong, elastic, and low in density.
- the structures of the present invention are more thermally stable than the ⁇ V ⁇ foamed structures and do not generate unpleasant odors during foam expansion, production and use.
- Soft strong cross-linked foam construction is useful for sporting goods, medical equipment and cushioning equipment.
- an ethylene-based polymer suitable for the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ '') or ( ⁇ '') is preferably used.
- blends with other natural or synthetic polymers can be used.
- Suitable different ethylene-based polymers include low-density polyethylene (LD-II) (eg, high-pressure, free-radical polymerization), medium-density polyethylene (MD-II), and the like.
- high density polyethylene (HDPE) eg, produced using a Ziegler catalyst as described in US Pat. No.
- the ethylenic polymer material preferably comprises at least 50% by weight, more preferably at least 70% by weight, of an ethylene monomeric unit.
- the ethylene-based polymer material may be composed entirely of one ethylene monomer unit.
- Preferred blends include the ethylene copolymer compositions ( ⁇ ), ( ⁇ '), ( ⁇ '') or ( ⁇ ''') and other conventional ethylene polymers such as LDPE, HDPE. , Ethylene Z acrylate copolymer (EAA), and LLDPE.
- the foamed structure of the present invention can take any physical form known in the art, for example, in the form of a sheet, plaque, or burn-stock.
- Other useful foams are expandable or expandable particles, formable expandable particles, or beads, and articles produced by the expansion and / or fusion and welding of these beads. is there.
- the foamed structure of the present invention is a blend of the ethylene copolymer composition (A), (A ′), ( ⁇ ′′ ′) or ( ⁇ ′′ ′′) and a decomposable chemical foaming agent.
- the foamed plasticized or molten polymer material is heated and extruded to extrude the foamed molten polymer material from a die and cross-linked into the molten polymer material. It is produced by exposing the molten polymer material to elevated temperatures to release the blowing agent and create a foamed structure.
- the polymer material and the chemical blowing agent can be mixed and melt blended by means known in the art, such as an extruder, mixer, or blender.
- the chemical blowing agent is preferably dry blended with the polymer material before the polymer material is heated to the molten form, but should be added when the polymer material is in the molten phase. You can also.
- Crosslinking can be induced by the addition of a crosslinker or by radiation. Induction of cross-linking and exposure to elevated temperatures to effect expansion or foaming can occur simultaneously or sequentially. When a crosslinker is used, it is incorporated into the polymer material as well as the chemical blowing agent. Further, when a crosslinker is used, the foamable polymer melt is preferably heated or exposed to a temperature of less than 150 ° C to prevent decomposition of the crosslinker or blowing agent, Prevent premature cross-coupling.
- the foamable polymer material When using radiation cross-linking, the foamable polymer material is heated or exposed to a temperature, preferably below 160 ° C, to prevent decomposition of the blowing agent.
- the foamed molten polymer material is extruded through a die of desired shape to create a foamed structure.
- the expandable structure is then cross-linked and expanded at a high temperature such as an oven (typically 150 t: ⁇ 250).
- the foamable structure When radiative cross-linking is used, the foamable structure is irradiated to cross-link the polymer, which is then expanded at the elevated temperature described above.
- the structures of the present invention can be advantageously sheeted or laminated by the methods described above, using either cross-linking agents or radiation.
- the foamed structure of the present invention has a length as described in GB2, 145, 961A.
- a continuous sheet structure can be obtained by extrusion using a land die.
- the polymer, degradable blowing agent, and blowing agent are mixed in an extruder, and the mixture is heated to cross-link the polymer and cause the blowing agent to foam in a long land die.
- the contact between the foam structure and the die is lubricated with a suitable lubricant.
- the foamed structures of the present invention can also be made into cross-bonded foam beads suitable for molding articles.
- separate resin particles eg, granular resin pellets
- a substantially insoluble liquid eg, water
- the polymer beads are impregnated with a blowing agent, cooled, discharged from the container, and then expanded by heating or steam.
- the styrene monomer can be impregnated into a suspension pellet together with a cross-linking agent to form a graphitic copolymer containing an ethylene polymer material.
- a foaming agent can be impregnated in a suspended or non-aqueous resin pellet.
- the expandable beads are expanded by heating with steam, and formed into expandable polystyrene foam beads by a usual method.
- the foam beads can be formed by means known in the art. For example, foam beads are filled into a mold, the mold is compressed by compressing the mold, and the beads are heated by, for example, steam to fuse and weld the beads to form an article.
- pre-heat beads with air or other blowing agent before filling into mold I can do it.
- Expanded beads also produce a mixture of the polymer, crosslinker, and degradable mixture in a suitable mixing device or extruder, form the mixture into a pellet, and heat the pellet. It can also be made by cross-linking and expanding.
- cross-linked foam beads suitable for forming into articles.
- the ethylene polymer material is melted and mixed with a physical blowing agent in a conventional foam extruder to create a substantially continuous foamed strand.
- the foamed strand is granulated or pelletized to form a foamed bead.
- the foam beads are then cross-linked by radiation.
- the cross-linked foam beads are then coalesced and molded to produce various articles as described above for other foam bead methods. Additional teachings on this method can be found in U.S. Pat. No. 3,616,365 and in the above-cited publication of PP Park et al.
- the foamed structures of the present invention can be manufactured in burn stock form by two different methods.
- One method involves the use of cross-linking agents, the other uses radiation.
- the foamed structure of the present invention comprises the ethylene copolymer composition (A), (A ′), ( ⁇ ′′ ′) or ( ⁇ ′′ ′′), a cross-linking agent and a chemical blowing agent.
- the slab is mixed to form a slab, and the mixture is heated in a mold so that the crosslinker crosslinks the polymer material and breaks down the blowing agent, and the pressure in the mold. It can be made to expand in the form of a burn stock by swelling it by releasing it. Optionally, the burn stock created during pressure release can be reheated to provide further expansion.
- Cross-linked polymer sheets can be made by irradiating the polymer sheet with a high energy beam or by heating a polymer sheet containing a chemical cross-linking agent.
- the cross-linked polymer sheet is cut into the desired shape, impregnated with high pressure nitrogen at a temperature above the softening point of the polymer, and the pressure is released to nucleate and slightly expand the foam in the sheet .
- the sheet is reheated at a low pressure above the softening point, and then the pressure is released to expand the foam.
- Blowing agents useful for making the foamed structures of the present invention include degradable chemical blowing agents. Such chemical blowing agents decompose at high temperatures to form gases or vapors, causing the polymer to swell into the foam.
- the chemical blowing agent is preferably in a solid form so that it can easily dry blend with the polymer material.
- chemical foaming agents azodicarbon amide, azodiisobutyronitrile, benzenesulfohydrazide, 4,4-oxybenzensulfonyl-semicarnozide, J) -toluenesulfonyl-semica Reno ,.
- Gide normazozika ruboxylate, N, N'-dimethyl- ⁇ , ⁇ '-ginitorosoterefutarimido, ⁇ , ⁇ '-jinitorosopenta methylente
- Examples include tramine, 4,4-oxybis (benzenesulfonyl hydrazide), and trihydrazinotriazine, with azodicalbonamide being preferred.
- Additional teachings on chemical foaming agents can be found in the above-mentioned publication ⁇ -205-208 by C.P. 'Park' and in the Polyolef in Foam Handbook of Polymer Foams and Technology, pp. ⁇ 82-402 by F.A. D'Kay. Freno.
- the chemical blowing agent should deliver 0.2 to 5.0, preferably 0.5 to 3.0, and most preferably 1.2 to 2.5 moles of gas or vapor per kg of polymer. Blended with polymer material in sufficient quantity to release.
- Crosslinking agents useful for making the foamed structures of the present invention are organic peroxysides.
- Useful organic peroxyside crosslinkers include 1,1-di-t-butylboxyl-3,3,5-trimethylcyclohexane; dicumyl peroxide, 2 , 5-Dimethyl-2,5-di (t-butylboxoxy) hexane; 1-butylcumyl peroxyside, ,, '-di (butylperoxy) -diisopropylpropylbenzene, di-t- Butylno, 'oxide, and 2,5-dimethyl-2,5-di (t-butylvinyl) hexane.
- Dicumyl peroxide is the preferred reagent. Additional teachings on organic peroxide cross-linking agents can be found in the above-mentioned publication PP 198-204 of Peak.
- Radiation cross-linking can be done by any of the usual types. Useful types of radiation include electron beams or beta rays, gamma rays, x-rays, or neurons. The radiation cross-links by generating polymer groups, which are believed to collectively cross-link. Additional teachings on radiation cross-coupling can be found in the above-mentioned publication PP198-204 of Xi-Pi-Park.
- a physical blowing agent can be used.
- Organic and none as physical blowing agents Machine reagents.
- Suitable inorganic blowing agents include carbon dioxide, nitrogen, argon, water, air, and helium.
- As an organic blowing agent complete with aliphatic hydrocarbons having 1 to 9 carbon atoms, aliphatic alcohols having 1 to 3 carbon atoms, and 1 to 4 carbon atoms And partially halogenated hydrocarbons.
- Aliphatic hydrocarbons include methane, ethane, pronon, n-butane, isobutane, n-pentane, isopentan, and neopentane.
- Aliphatic alcohols include methanol, ethanol, and n-prono. Nor and Isopropanol.
- the fully and partially halogenated aliphatic hydrocarbons include fluorocarbons, fluorocarbons, and fluorofluorocarbons. Examples of fluorocarbons are methyl fluoride, no.
- Fluorobutane, Fluorocyclobutane Partial halogen used in the present invention, and Fluorocarbon As methyl chloride, methylene chloride, ethyl chloride, 1, 1, 1—trichloroethane 1, 1-dichloro-1-fluoroetan (HCFC-14 1 b), 1-black mouth-1, 1-difluoroe (HCFC-14 2b), black difluoro Methane (HCFC-22), 1,1-dichloro-2,2,2-trifluorene (HCFC-123), and 1—Black mouth—1,2,2,2-Tetrafluorene (HCFC—124).
- methyl chloride methylene chloride, ethyl chloride, 1, 1, 1—trichloroethane 1, 1-dichloro-1-fluoroetan (HCFC-14 1 b), 1-black mouth-1, 1-difluoroe (HCFC-14 2b), black difluoro Methane (HCFC-22), 1,1-dichloro-2
- Trihalo mouth monofluorometer CFC-11
- dichlorodifluorometer CFC-12
- tricro Mouth trifluorene CFC-113
- 1,1,1-trifluorene pentafluorene
- dichlorotetrafluorene CFC-114
- black Mouth heptafluoroprono And dichlorohexafluoroproonone.
- the amount of blowing agent to be incorporated into the polymer melt to make a foamable polymer gel is from 0.2 to 5.0, preferably from 0.5 to 3.0, most preferably 1. 0 to 2.5 mol Z kg polymer.
- the foamed structure of the present invention has a cross-link density of 5 to 90%, more preferably 30 to 70%, as measured by ASTM D-275-84, Method A.
- the foamed structure of the present invention has a density of less than 500, more preferably less than 250, most preferably less than 150 kg / cubic meter.
- the foamed structure is measured to 0.05-5.0, more preferably 1.0-2.0, most preferably 0.2-1.0 ml as measured by ASTM D 356.
- the foamed structure of the present invention may be a closed cell or an open cell.
- the foamed structure of the present invention is more than 90% closed cells as measured by ASTM D2856-A.
- additives can be blended in the foamed structure of the present invention.
- additives include, for example, inorganic fillers, stability control agents, nucleating agents, They are coloring agents, antioxidants, acid removers, UV absorbers, flame retardants, processing aids, and extrusion aids.
- the gasket is composed of the ethylene-based copolymer composition (A), (′), ( ⁇ ′ ′) or ( ⁇ ′ ′ ′). This gasket has the ability to compress and seal various containers without contaminating the contents.
- the use of the novel gasket material disclosed herein benefits liquid containers in particular.
- gaskets particularly useful in this application For “hot fill” applications, it must withstand temperatures above room temperature (about 25 ° C) for a short period of time. For example, for products that need to be sterilized, a gasket with a melting point of more than 100 ° C must be installed.
- a polymer suitable for the application can be specifically selected through the selection of an appropriate density for use in the gasket environment.
- polymers can be combined with an effective amount of the composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' '' '). Can manufacture gaskets as well.
- Other such polymers are thermoplastic polymers (ie, melt processable), including highly branched, low density polyethylene, and heterogeneously branched, linear, low density polyethylene. And polymers such as ethylene-vinyl acetate copolymers and ethylene / acrylic acid copolymers.
- various gaskets can be manufactured by providing the polymer with hardness suitable for use.
- the hardness is measured as “Short A hardness” or “Short D hardness” (measured using ASTM D-2240).
- the range of the hardness of the polymer is as follows. Even when not using petroleum oil which is usually added for the purpose of lowering the hardness of the resulting gasket, it is in the range of 70 to 100.
- the ethylene copolymer composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′ ′) or ( ⁇ ′ ′) does not interfere with the improved properties found by the present applicant.
- Additives such as antioxidants, phosphites, cling additives (eg, PIB), slip additives (eg, Elcamide), anti- It is also possible to contain an additive and a pigment.
- Gaskets are available in a number of different formats, including “0-rings” and flat seals (eg, “film-like” gaskets having a thickness appropriate for the intended use). Can take various forms.
- Proper end use includes a beverage cap, a hot filter cap, a polypropylene cap, a metal cap, and high density polyethylene.
- gaskets for leak proof cells (1), waterproof sheets, reusable gaskets, synthetic cork-like materials, thin cell electronic membrane separators, magnetic Rubber materials, disk gaskets for alcoholic beverage bottle caps, freeze-resistant seal rings, plastic gaskets, expansion joints and water stoppers, corrosion-resistant conduit fittings, flexible Magnetic plastics, pipe joint seals, integral weatherable plastic lids and hinges for electrical output, magnetic ic fed foamed articles, Soft knife sketch, glass seal, sealing liner for tamper proof, pressure applicator, structure with bottle cap and straw together, large seasoning bottle Trainer, A Tsu Purusosu or salsa (salsa) 'manager over for metal caps, home canning for the manager over, Ru is included, such as "crown".
- Gaskets made from this ethylene-based copolymer composition ( ⁇ ), ( ⁇ '), (''') or ( ⁇ ''') can be used in numerous applications, especially when used in food applications.
- Has the advantage of This advantage includes improved taste and odor compared to current polymer gaskets, such as ethylene-vinyl acetate, and polar substrates (eg, polyethylene terephthalate, Low adhesion to glass (such as glass), which is effective in reducing the torque when removing sealed containers and caps; and low extractables (also especially for regulatory compliance).
- non-polar substrates such as polypropylene and high-density polyethylene (polyethylene which is a linear homopolymer or linear heterogeneous high-density polyethylene) Good adhesion to oxygen, carbon dioxide and water. That the barrier properties to be used are sufficient
- Ethylene Z vinyl acetate, etc. have a higher melting point, better stress crack resistance, better chemical resistance, and a variable hardness (specific In packaging, depending on the amount of torque required to seal the container and the internal pressure of the container, the forces that may require the gasket to be stiffer or lower, which is effective ) Is included.
- the gaskets claimed herein may also be prepared using conventional techniques, using extruded sheets or films, such as blown films, cast films or extruded coated films. It can also be manufactured by punching or cutting out a gasket from this sheet or film using, for example, the following method.
- Multi-layer film structures are also suitable for use in the manufacture of the gaskets disclosed herein, but at least one Layer (preferably the inner layer located adjacent to the product) contains this ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ '') or ( ⁇ '').
- a foam multilayer gasket containing the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ '') or (''''') is also useful in the present invention. is there.
- Extruded products include extrusion coated articles, products in the form of extruded profiles and extruded cast films, which are ethylene. It consists of a copolymer system ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' ').
- ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' '' ') with another polymer material, This can be used to make single or multi-layer products, and to make structures, such as sealants, adhesives or tie layers.
- Ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ') for the purpose of modifying processability, film strength, heat sealability or adhesiveness It is also possible to blend another polymer material into '').
- the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ' ') or ( ⁇ ' '' ') can be used in chemically and ⁇ or physically modified forms. . Such modifications may be achieved by any known technique, for example, by ionizing and extruding and graphing.
- neck-in is defined as the difference between the die width and the width of the extruded or finished product at the take-off location, To a lesser degree with the expansion of the workpiece, it is affected by surface tension effects. The measured neck-in value (at a given output) remains constant or decreases with increasing drop-down rate, and for normal ethylene polymers. It is well known that Neckin values generally increase with decreasing molecular weight and with decreasing Z or molecular weight distribution.
- the ethylene copolymer composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′ ′) or ( ⁇ ′ ′) may have a high drowndown and substance which are found by the present applicant.
- additives such as antioxidant phosphites, sticking (c1ing) additives (such as PIB), Standostab PEPQ (trademark) ) (Supplied by Sandoz), pigments, colorants and fillers.
- Ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ''') or ( ⁇ ''''), antiblocking and friction Additives that enhance the modulus characteristics, including, but not limited to, primary, secondary, and untreated and treated silicon dioxide, talc, calcium carbonate, and clay. Substituted fatty acid amides), a release agent for a cooling roll, a silicone coating material, and the like. Also, for example, as described by Niemann in US Pat. No. 4,486,552, other anti-fogging properties of transparent cast films can be improved. Additives can also be added.
- the coatings, profiles and films of the present invention have improved antistatic properties and, for example, Additional additives that enable the packaging or manufacture of electron-sensitive products, such as quaternary ammonium compounds, alone or with ethylene-acrylic acid (EAA) copolymers or other functional polymers It is also possible to add in combination with other types.
- EAA ethylene-acrylic acid
- the multilayer structure containing the ethylene-based copolymer composition ( ⁇ ), ( ⁇ ′), ( ⁇ ′ ′) or ('′ ′) may be produced by any known means. Steps include extrusion, lamination and combinations thereof. Further, the ethylene copolymer composition ( ⁇ ), ( ⁇ '), ( ⁇ ') or ( ⁇ '' ') can also be used in coextrusion operations, in which case more A material that exhibits a high drawdown is essentially "loaded" with one or more materials that exhibit a lower drawdown.
- the ethylene-based copolymer composition ( ⁇ ), ('), ( ⁇ '') or ( ⁇ '') is extruded regardless of whether it has a single-layer structure or a multilayer structure. Can be used in the production of coatings, extruded profiles and extruded cast films.
- the substrate or adjacent The material layers can be polar or non-polar, including, but not limited to, paper products, metals, ceramics, glass, and various poly- mers. This includes, among other things, other polyolefins, as well as combinations thereof.
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- Compositions Of Macromolecular Compounds (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Laminated Bodies (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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CA002288686A CA2288686C (en) | 1998-03-10 | 1999-03-10 | Ethylene copolymer composition and use thereof |
US09/423,393 US6329465B1 (en) | 1998-03-10 | 1999-03-10 | Ethylene copolymer composition and uses thereof |
EP99909181A EP0982362A4 (en) | 1998-03-10 | 1999-03-10 | COMPOSITION OF ETHYLENE COPOLYMER AND USE THEREOF |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP10/58636 | 1998-03-10 | ||
JP5863698 | 1998-03-10 |
Publications (1)
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WO1999046325A1 true WO1999046325A1 (fr) | 1999-09-16 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP1999/001144 WO1999046325A1 (fr) | 1998-03-10 | 1999-03-10 | Composition de copolymere d'ethylene et utilisation de cette derniere |
Country Status (7)
Country | Link |
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US (1) | US6329465B1 (ja) |
EP (1) | EP0982362A4 (ja) |
KR (2) | KR100352785B1 (ja) |
CN (2) | CN1313526C (ja) |
CA (1) | CA2288686C (ja) |
ID (1) | ID22889A (ja) |
WO (1) | WO1999046325A1 (ja) |
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US8785574B2 (en) | 2007-11-19 | 2014-07-22 | Mitsui Chemicals, Inc. | Bridged metallocene compound, olefin polymerization catalyst containing the same, and ethylene polymer obtained with the catalyst |
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JP2010258439A (ja) * | 2009-03-31 | 2010-11-11 | Japan Polyethylene Corp | 太陽電池封止材用樹脂組成物 |
JP2010254989A (ja) * | 2009-03-31 | 2010-11-11 | Japan Polyethylene Corp | 押出成形用樹脂組成物、それを用いた太陽電池モジュールの封止材、遮水シート、又はターポリン |
JP2014028974A (ja) * | 2009-03-31 | 2014-02-13 | Japan Polyethylene Corp | 太陽電池封止材用樹脂組成物 |
JP2016160266A (ja) * | 2015-02-26 | 2016-09-05 | 日本ポリエチレン株式会社 | ポリエチレン樹脂組成物とその製造方法及びインフレーションフィルム |
JP2020142401A (ja) * | 2019-03-04 | 2020-09-10 | 株式会社イノアックコーポレーション | 断熱シートおよび断熱ボックス |
Also Published As
Publication number | Publication date |
---|---|
CN100398597C (zh) | 2008-07-02 |
CN1769336A (zh) | 2006-05-10 |
EP0982362A4 (en) | 2002-03-06 |
CN1313526C (zh) | 2007-05-02 |
US6329465B1 (en) | 2001-12-11 |
KR100352785B1 (ko) | 2002-09-16 |
CA2288686C (en) | 2004-02-24 |
CN1256703A (zh) | 2000-06-14 |
EP0982362A1 (en) | 2000-03-01 |
KR100352784B1 (ko) | 2002-09-16 |
CA2288686A1 (en) | 1999-09-16 |
KR20020043241A (ko) | 2002-06-08 |
ID22889A (id) | 1999-12-16 |
KR20010012350A (ko) | 2001-02-15 |
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