CN104152099A - Environmentally-friendly solvent-free PUR hot melt adhesive and preparation method thereof - Google Patents
Environmentally-friendly solvent-free PUR hot melt adhesive and preparation method thereof Download PDFInfo
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- CN104152099A CN104152099A CN201410405116.3A CN201410405116A CN104152099A CN 104152099 A CN104152099 A CN 104152099A CN 201410405116 A CN201410405116 A CN 201410405116A CN 104152099 A CN104152099 A CN 104152099A
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- polyester polyol
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- hot melt
- melt adhesive
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- 239000004831 Hot glue Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 229920005906 polyester polyol Polymers 0.000 claims abstract description 72
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000007822 coupling agent Substances 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims description 48
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 238000009835 boiling Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 3
- -1 stablizer Substances 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 7
- 239000002904 solvent Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 238000001035 drying Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 231100000572 poisoning Toxicity 0.000 abstract description 3
- 230000000607 poisoning effect Effects 0.000 abstract description 3
- 238000007761 roller coating Methods 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract description 3
- 238000004132 cross linking Methods 0.000 abstract description 2
- 238000004513 sizing Methods 0.000 abstract 1
- 239000003381 stabilizer Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000004814 polyurethane Substances 0.000 description 14
- 238000006757 chemical reactions by type Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- HIFVAOIJYDXIJG-UHFFFAOYSA-N benzylbenzene;isocyanic acid Chemical class N=C=O.N=C=O.C=1C=CC=CC=1CC1=CC=CC=C1 HIFVAOIJYDXIJG-UHFFFAOYSA-N 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 150000002513 isocyanates Chemical group 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Polyurethanes Or Polyureas (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses an environmentally-friendly solvent-free PUR hot melt adhesive and a preparation method thereof. The environmentally-friendly solvent-free PUR hot melt adhesive comprises a first polyester polyol, a second polyester polyol, a third polyester polyol, a fourth polyester polyol, N-methyl pyrrolidone, a leveling agent, a stabilizing agent, a coupling agent and methyl diphenylene diisocyanate. The method has the characteristics of no drying processes, avoiding of environmental pollution and poisoning problems caused by the presence of a solvent, and environmental protection requirement meeting, and the environmentally-friendly solvent-free PUR hot melt adhesive has a simple bonding process by adopting roller coating or spraying sizing, has good operability, and can fix two bound objects within a short period of time, so an assembly part can be rapidly transferred to a next processing operation, and the work efficiency is improved; and the environmentally-friendly solvent-free PUR hot melt adhesive has the advantages of heat resistance, cold resistance, water vapor resistance, chemical resistance and solvent resistance, and has greatly improved above performance and bonding strength than original hot melt adhesives due to the cross-linking structure of a reactive hot melt adhesive.
Description
Technical field
The present invention relates to a kind of hot melt adhesive and preparation method, relate in particular to a kind of environment-friendly solvent-free PUR hot melt adhesive and preparation method thereof.
Background technology
PUR hot melt adhesive is moisture-curable reaction type polyurethane hot-melt adhesive PUR (Polyurethane Reactive), Chinese full name is moisture-curable reaction type polyurethane hot-melt adhesive. main component is isocyanate terminated base polyurethane prepolymer for use as, the cementability of PUR and toughness (elasticity) are adjustable, and there is an excellent bonding strength, temperature tolerance, chemical resistance and ageing resistance, become in recent years one of important kind of tackiness agent industry, be now widely used in the national economy fields such as packaging, wood working, automobile, weaving, electromechanics and aerospace.
PUR tackiness agent is urethano (NHCOO-) or the isocyanate group (NCO) that contains polarity and chemical activity in molecular structure, as timber, leather, fabric, any surface finish materials such as the porous materials such as paper, pottery and plastics, metal, glass, rubber have good bounding force with the material that contains reactive hydrogen.
And existing hot melt adhesive, its preparation method more complicated, needs drying process, has obvious environmental pollution and poisoning problem, can not meet environmental requirement, and technique for sticking more complicated can not adopt the glue applying method such as roller coating or spraying.
Summary of the invention
Object of the present invention is just to provide in order to address the above problem a kind of environment-friendly solvent-free PUR hot melt adhesive and preparation method thereof.
The present invention is achieved through the following technical solutions above-mentioned purpose:
Environment-friendly solvent-free PUR hot melt adhesive of the present invention comprises the first polyester polyol, the second polyester polyol, the 3rd polyester polyol, the 4th polyester polyol, N-Methyl pyrrolidone, flow agent, stablizer, coupling agent and diphenylmethanediisocyanate, and described each composition proportion is: described the first polyester polyol accounts for composition proportion and is 6.9-690 parts; Described the second polyester polyol accounts for composition proportion and is 5.592-559.2 parts; Described the 3rd polyester polyol accounts for composition proportion and is 4.5-450 parts; Described the 4th polyester polyol accounts for composition proportion and is 7.782-778.2 parts; Described N-Methyl pyrrolidone accounts for composition proportion and is 0.09-9 parts; Described flow agent accounts for composition proportion and is 0.015-1.5 parts; Described stablizer accounts for composition proportion and is 0.006-0.6 part; Described coupling agent accounts for composition proportion and is 0.09-9 parts; Described diphenylmethanediisocyanate accounts for composition proportion and is 5.025-502.5 parts.
Further, to account for composition be 69 parts to described the first polyester polyol; It is 55.92 parts that described the second polyester polyol accounts for composition; It is 45 parts that described the 3rd polyester polyol accounts for composition; It is 77.82 parts that described the 4th polyester polyol accounts for composition; It is 0.9 part that described N-Methyl pyrrolidone accounts for composition; It is 0.15 part that described flow agent accounts for composition; It is 0.06 part that described stablizer accounts for composition; It is 0.9 part that described coupling agent accounts for composition; It is 50.25 parts that described diphenylmethanediisocyanate accounts for composition.
Further, the model of described the first polyester polyol is HS2F-237P (HOKOU); The model of described the second polyester polyol is HS2D-121A (HOKOU); The model of described the 3rd polyester polyol is HS2E-581A (HOKOU); The model of described the 4th polyester polyol is HSpolyl1000 (HOKOU).
The preparation method of environment-friendly solvent-free PUR hot melt adhesive of the present invention comprises the following steps:
A, described the first polyester polyol, described the second polyester polyol, described the 3rd polyester polyol, described the 4th polyester polyol, described N-Methyl pyrrolidone, described flow agent and described coupling agent are placed in to the 100-120 DEG C of vacuum 1-3h that dewaters;
After b, completing steps a, temperature is in the time of 70-80 DEG C, joins in four-hole boiling flask insulation reaction 2-4h after adding while stirring the described diphenylmethanediisocyanate of 5.025-502.5 parts;
C, get the sample in step b, when the massfraction of analyzing NCO conforms to substantially with design load, add the stablizer of 0.006-0.6 part, then sealing preservation after vacuum defoamation 20～30min.
Further, according to step a, described the first polyester polyol, described the second polyester polyol, described the 3rd polyester polyol, described the 4th polyester polyol, described N-Methyl pyrrolidone, described flow agent and described coupling agent are placed in to 110 DEG C of vacuum 2h that dewaters.
Further, according to step b, after completing steps a, temperature, in the time of 75 DEG C, joins in four-hole boiling flask insulation reaction 3h after adding while stirring the described diphenylmethanediisocyanate of 50.25 parts.
Further, according to step c, get the sample in step b, when the massfraction of analysis NCO conforms to substantially with design load, add the described stablizer of 0.06 part, then after vacuum defoamation 25min, sealing is preserved.
Further, according to step b, after completing steps a, temperature, in the time of 75 DEG C, joins in four-hole boiling flask insulation reaction 3h under nitrogen protection after adding while stirring the described diphenylmethanediisocyanate of 50.25 parts.
Beneficial effect of the present invention is:
The present invention is without drying process, can be because of the existence environmental pollution of solvent and poisoning problem, meet environmental requirement, its technique for sticking is easy, can adopt the glue applying method such as roller coating or spraying, and preferable operability, two clung bodies can be fixed at short notice, therefore can fast assembly parts be proceeded to lower road manufacturing procedure, improve work efficiency; Also there is heat-resisting, cold-resistant, water-fast steam, chemicals-resistant and solvent resistance, compared with former hot melt adhesive, increase substantially because the crosslinking structure of reaction type hot-fusible tackiness agent makes listed performance and bonding strength.
Embodiment
The invention will be further described below:
Environment-friendly solvent-free PUR hot melt adhesive of the present invention comprises the first polyester polyol, the second polyester polyol, the 3rd polyester polyol, the 4th polyester polyol, N-Methyl pyrrolidone, flow agent, stablizer, coupling agent and diphenylmethanediisocyanate, and described each composition proportion is: it is 69 parts that described the first polyester polyol accounts for composition; It is 55.92 parts that described the second polyester polyol accounts for composition; It is 45 parts that described the 3rd polyester polyol accounts for composition; It is 77.82 parts that described the 4th polyester polyol accounts for composition; It is 0.9 part that described N-Methyl pyrrolidone accounts for composition; It is 0.15 part that described flow agent accounts for composition; It is 0.06 part that described stablizer accounts for composition; It is 0.9 part that described coupling agent accounts for composition; It is 50.25 parts that described diphenylmethanediisocyanate accounts for composition, and the model of described the first polyester polyol is HS2F-237P (HOKOU); The model of described the second polyester polyol is HS2D-121A (HOKOU); The model of described the 3rd polyester polyol is HS2E-581A (HOKOU); The model of described the 4th polyester polyol is HSpolyl1000 (HOKOU).
The preparation method of environment-friendly solvent-free PUR hot melt adhesive of the present invention comprises the following steps:
A, described the first polyester polyol, described the second polyester polyol, described the 3rd polyester polyol, described the 4th polyester polyol, described N-Methyl pyrrolidone, described flow agent and described coupling agent are placed in to 110 DEG C of vacuum 2h that dewaters;
After b, completing steps a, temperature is in the time of 75 DEG C, joins in four-hole boiling flask insulation reaction 3h under nitrogen protection after adding while stirring the described diphenylmethanediisocyanate of 50.25 parts;
C, get the sample in step b, when the massfraction of analyzing NCO conforms to substantially with design load, add the stablizer of 0.06 part, then sealing preservation after vacuum defoamation 25min.
Embodiment mono-:
Take the first polyester polyol: HS2F-237P (HOKOU) 69g, the second polyester polyol: HS2D-121A (HOKOU) 55.92g, the 3rd polyester polyol: HS2E-581A (HOKOU) 45g, the 4th polyester polyol: HSpolyl1000 (HOKOU) 77.82g, N-Methyl pyrrolidone: 0.90g, flow agent: 0.15, coupling agent: 0.9g and stablizer: 0.06g, heated and stirred consolute, vacuum-drying dehydration 2h at 110 DEG C, under nitrogen protection, add 50.25 parts of diphenylmethanediisocyanates, constant temperature stirring reaction 3h at 75 DEG C, when discharging, finished product is preserved in sealing immediately.Obtain its typical performance of product: outward appearance is white solid or faint yellow, density is 1.1 ± 0.05g/cm3, and viscosity is 130 DEG C of 5000 ± 1000mPa.s, curing mode is moisture-curable, be 1-3min set time, and applying glue temperature is 110to140 DEG C, and temperature tolerance is-30to120 DEG C.
Those skilled in the art do not depart from essence of the present invention and spirit, can there is various deformation scheme to realize the present invention, the foregoing is only the better feasible embodiment of the present invention, not thereby limit to interest field of the present invention, the equivalent method that all utilizations description of the present invention is done changes, within being all contained in interest field of the present invention.
Claims (8)
1. an environment-friendly solvent-free PUR hot melt adhesive, it is characterized in that: comprise the first polyester polyol, the second polyester polyol, the 3rd polyester polyol, the 4th polyester polyol, N-Methyl pyrrolidone, flow agent, stablizer, coupling agent and diphenylmethanediisocyanate, described each composition proportion is: described the first polyester polyol accounts for composition proportion and is 6.9-690 parts; Described the second polyester polyol accounts for composition proportion and is 5.592-559.2 parts; Described the 3rd polyester polyol accounts for composition proportion and is 4.5-450 parts; Described the 4th polyester polyol accounts for composition proportion and is 7.782-778.2 parts; Described N-Methyl pyrrolidone accounts for composition proportion and is 0.09-9 parts; Described flow agent accounts for composition proportion and is 0.015-1.5 parts; Described stablizer accounts for composition proportion and is 0.006-0.6 part; Described coupling agent accounts for composition proportion and is 0.09-9 parts; Described diphenylmethanediisocyanate accounts for composition proportion and is 5.025-502.5 parts.
2. a kind of environment-friendly solvent-free PUR hot melt adhesive according to claim 1, is characterized in that: it is 69 parts that described the first polyester polyol accounts for composition; It is 55.92 parts that described the second polyester polyol accounts for composition; It is 45 parts that described the 3rd polyester polyol accounts for composition; It is 77.82 parts that described the 4th polyester polyol accounts for composition; It is 0.9 part that described N-Methyl pyrrolidone accounts for composition; It is 0.15 part that described flow agent accounts for composition; It is 0.06 part that described stablizer accounts for composition; It is 0.9 part that described coupling agent accounts for composition; It is 50.25 parts that described diphenylmethanediisocyanate accounts for composition.
3. a kind of environment-friendly solvent-free PUR hot melt adhesive according to claim 1, is characterized in that: the model of described the first polyester polyol is HS2F-237P (HOKOU); The model of described the second polyester polyol is HS2D-121A (HOKOU); The model of described the 3rd polyester polyol is HS2E-581A (HOKOU); The model of described the 4th polyester polyol is HSpolyl1000 (HOKOU).
4. the preparation method of a kind of environment-friendly solvent-free PUR hot melt adhesive according to claim 1, is characterized in that: comprise the following steps:
A, described the first polyester polyol, described the second polyester polyol, described the 3rd polyester polyol, described the 4th polyester polyol, described N-Methyl pyrrolidone, described flow agent and described coupling agent are placed in to 100-120 DEG C of vacuum 1-3 h that dewater;
After b, completing steps a, temperature is in the time of 70-80 DEG C, joins in four-hole boiling flask insulation reaction 2-4h after adding while stirring the described diphenylmethanediisocyanate of 5.025-502.5 parts;
C, get the sample in step b, when the massfraction of analyzing NCO conforms to substantially with design load, add the stablizer of 0.006-0.6 part, then sealing preservation after vacuum defoamation 20～30min.
5. the preparation method of a kind of environment-friendly solvent-free PUR hot melt adhesive according to claim 4, it is characterized in that: according to step a, described the first polyester polyol, described the second polyester polyol, described the 3rd polyester polyol, described the 4th polyester polyol, described N-Methyl pyrrolidone, described flow agent and described coupling agent are placed in to 110 DEG C of vacuum 2h that dewaters.
6. the preparation method of a kind of environment-friendly solvent-free PUR hot melt adhesive according to claim 4, it is characterized in that: according to step b, after completing steps a, temperature is in the time of 75 DEG C, joins in four-hole boiling flask insulation reaction 3h after adding while stirring the described diphenylmethanediisocyanate of 50.25 parts.
7. the preparation method of a kind of environment-friendly solvent-free PUR hot melt adhesive according to claim 4, it is characterized in that: according to step c, get the sample in step b, when the massfraction of analysis NCO conforms to substantially with design load, add the described stablizer of 0.06 part, then after vacuum defoamation 25min, sealing is preserved.
8. the preparation method of a kind of environment-friendly solvent-free PUR hot melt adhesive according to claim 6; it is characterized in that: according to step b; after completing steps a, temperature is in the time of 75 DEG C; add while stirring the described diphenylmethanediisocyanate of 50.25 parts under nitrogen protection after, join in four-hole boiling flask insulation reaction 3h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410405116.3A CN104152099A (en) | 2014-08-18 | 2014-08-18 | Environmentally-friendly solvent-free PUR hot melt adhesive and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410405116.3A CN104152099A (en) | 2014-08-18 | 2014-08-18 | Environmentally-friendly solvent-free PUR hot melt adhesive and preparation method thereof |
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| CN104152099A true CN104152099A (en) | 2014-11-19 |
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| CN201410405116.3A Pending CN104152099A (en) | 2014-08-18 | 2014-08-18 | Environmentally-friendly solvent-free PUR hot melt adhesive and preparation method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106398630A (en) * | 2015-07-28 | 2017-02-15 | 江苏吉华化工有限公司 | Preparation method for producing PUR hot melt adhesive through cyclopentadiene-acrolein |
| CN106398620A (en) * | 2015-07-28 | 2017-02-15 | 江苏吉华化工有限公司 | Preparation method for producing PUR hot melt adhesive through benzylamine-n-propionaldehyde |
| CN106398621A (en) * | 2015-07-28 | 2017-02-15 | 江苏吉华化工有限公司 | Preparation method for producing butyl rubber through polyethylene |
| CN106398622A (en) * | 2015-07-28 | 2017-02-15 | 江苏吉华化工有限公司 | Preparation method for producing PUR hot melt adhesive by using H acid |
| CN106479421A (en) * | 2015-08-26 | 2017-03-08 | 盐城市瓯华化学工业有限公司 | A kind of preparation method for making PUR PUR by trimethylpyridine-phosphamide |
| CN106478916A (en) * | 2015-08-26 | 2017-03-08 | 盐城市瓯华化学工业有限公司 | A kind of preparation method making butyl rubber by epoxy resin |
| CN106479419A (en) * | 2015-08-26 | 2017-03-08 | 盐城市瓯华化学工业有限公司 | A kind of preparation method making PUR PUR by nicotinic acid |
| CN106478918A (en) * | 2015-08-26 | 2017-03-08 | 盐城市瓯华化学工业有限公司 | A kind of preparation method for making butyl rubber by polyvinyl alcohol |
| CN106479418A (en) * | 2015-08-26 | 2017-03-08 | 盐城市瓯华化学工业有限公司 | A kind of preparation method making PUR PUR by morpholine-positive propionic aldehyde |
| CN106479420A (en) * | 2015-08-26 | 2017-03-08 | 盐城市瓯华化学工业有限公司 | A kind of preparation method for making PUR PUR by sodium chloride |
| CN106478911A (en) * | 2015-08-26 | 2017-03-08 | 盐城市瓯华化学工业有限公司 | A kind of preparation method making butyl rubber by Polyethylene Glycol |
| CN106701000A (en) * | 2015-07-28 | 2017-05-24 | 江苏吉华化工有限公司 | Method for preparing PUR hot melt adhesive through 2-methylpyridine |
| CN106701001A (en) * | 2015-08-26 | 2017-05-24 | 盐城市瓯华化学工业有限公司 | Preparation method for preparing butyl rubber through using sodium chloride |
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| CN103740316A (en) * | 2013-12-20 | 2014-04-23 | 南京林业大学 | Moisture-cured polyurethane hot melt adhesive for car lamp and preparation method thereof |
| CN103865465A (en) * | 2012-12-14 | 2014-06-18 | 江苏天顺新材料有限公司 | Moisture-curing polyurethane hot melt adhesive for automobile lamp and its preparation method |
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| WO1992007015A1 (en) * | 1990-10-11 | 1992-04-30 | Henkel Kommanditgesellschaft Auf Aktien | Moisture-setting fusion adhesive |
| CN102618202A (en) * | 2012-04-01 | 2012-08-01 | 江阴市诺科科技有限公司 | Water-based polyurethane composite adhesive for tanning and preparation method and application of composite adhesive |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106398630A (en) * | 2015-07-28 | 2017-02-15 | 江苏吉华化工有限公司 | Preparation method for producing PUR hot melt adhesive through cyclopentadiene-acrolein |
| CN106398620A (en) * | 2015-07-28 | 2017-02-15 | 江苏吉华化工有限公司 | Preparation method for producing PUR hot melt adhesive through benzylamine-n-propionaldehyde |
| CN106398621A (en) * | 2015-07-28 | 2017-02-15 | 江苏吉华化工有限公司 | Preparation method for producing butyl rubber through polyethylene |
| CN106398622A (en) * | 2015-07-28 | 2017-02-15 | 江苏吉华化工有限公司 | Preparation method for producing PUR hot melt adhesive by using H acid |
| CN106701000A (en) * | 2015-07-28 | 2017-05-24 | 江苏吉华化工有限公司 | Method for preparing PUR hot melt adhesive through 2-methylpyridine |
| CN106479419A (en) * | 2015-08-26 | 2017-03-08 | 盐城市瓯华化学工业有限公司 | A kind of preparation method making PUR PUR by nicotinic acid |
| CN106478916A (en) * | 2015-08-26 | 2017-03-08 | 盐城市瓯华化学工业有限公司 | A kind of preparation method making butyl rubber by epoxy resin |
| CN106478918A (en) * | 2015-08-26 | 2017-03-08 | 盐城市瓯华化学工业有限公司 | A kind of preparation method for making butyl rubber by polyvinyl alcohol |
| CN106479418A (en) * | 2015-08-26 | 2017-03-08 | 盐城市瓯华化学工业有限公司 | A kind of preparation method making PUR PUR by morpholine-positive propionic aldehyde |
| CN106479420A (en) * | 2015-08-26 | 2017-03-08 | 盐城市瓯华化学工业有限公司 | A kind of preparation method for making PUR PUR by sodium chloride |
| CN106478911A (en) * | 2015-08-26 | 2017-03-08 | 盐城市瓯华化学工业有限公司 | A kind of preparation method making butyl rubber by Polyethylene Glycol |
| CN106479421A (en) * | 2015-08-26 | 2017-03-08 | 盐城市瓯华化学工业有限公司 | A kind of preparation method for making PUR PUR by trimethylpyridine-phosphamide |
| CN106701001A (en) * | 2015-08-26 | 2017-05-24 | 盐城市瓯华化学工业有限公司 | Preparation method for preparing butyl rubber through using sodium chloride |
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