Implement best mode of the present invention
In the preparation method of conjugated-diolefin/uni-vinyl-arene copolymer rubber of the present invention, operable conjugated diene is meant any monomer that has conjugated double bond in its molecule, as C
4~C
12Conjugated diene monomer, preferred C
4~C
8Conjugated diene monomer, its specific examples comprise 1,3-butadiene, isoprene, 1,3-pentadiene, 1, the 1,3-pentadiene of 3-hexadiene, replacement or the 1,3-butadiene of replacement, and as 2,3-dimethyl-1,3-butadiene or 1-phenyl-1,3-butadiene.Conjugated diene monomer can use separately, also can mix use.Preferably select 1,3-butadiene or isoprene for use, because these two kinds monomeric rate of polymerization height help suitability for industrialized production.
In the preparation method of conjugated-diolefin/uni-vinyl-arene copolymer rubber of the present invention, operable mono vinyl arenes monomer is meant the aromatic monomer that has a vinyl substituted base on its aromatic ring, as contains C
8~C
20Monovinylarene, preferred C
8-C
12Monovinylarene, its specific examples comprises vinylbenzene, C
1-C
6The vinylbenzene that alkyl replaces, as-vinyl toluene, p-methylstyrene or right-t-butyl styrene, or have substituent styrene derivatives on the vinyl, as alpha-methyl styrene.Mono vinyl arenes monomer can use separately, also can mix use.Consider from obtaining the complexity aspect, preferably use vinylbenzene and p-methylstyrene, most preferably use vinylbenzene.
In the preparation method of conjugated-diolefin/uni-vinyl-arene copolymer rubber of the present invention, the consumption of conjugated diene monomer is a 25-95% weight based on the monomer total amount, preferred 50-90% weight; Correspondingly, the consumption of mono vinyl arenes monomer is a 5-75% weight based on the monomer total amount, preferred 10-50% weight.
In the preparation method of conjugated-diolefin/uni-vinyl-arene copolymer rubber of the present invention, should make monomer concentration as the consumption of raffinating oil of solvent is 2~70g total monomer/100ml solvent, preferred 5-50g/ total monomer/100ml solvent, most preferably 10-25g total monomer/100ml solvent.
According to the present invention, preferred raffinating oil of using is meant that boiling range is the hydrogenated gasoline that 60~90 ℃ platformate raffinate or boiling range are 60~90 ℃.Boiling range is that 60-90 ℃ platformate raffinate is meant from platformate raffinate and extracts remaining that part of oil behind the aromatic hydrocarbons, and main component is:
Component concentration (volume %)
2-methylpropane 0.43
Normal butane 0.10
2-methylbutane 4.55
Skellysolve A 7.10
Pentamethylene 4.24
2,3-methyl cyclobutane 3.84
2-methylpentane 14.94
3-methylpentane 11.30
Normal hexane 22.53
Methylcyclopentane 8.44
Benzene 0.38
Hexanaphthene 1.28
2-methyl hexane 6.38
1,1-dimethylcyclopentane 2.5
2,3-dimethylcyclopentane 2.5
3-methyl hexane 5.55
Suitable-1,2-dimethylcyclopentane 1.14
Instead-1,3-dimethylcyclopentane 0.46
3,3-dimethylpentane 0.72
Instead-1,2-dimethylcyclopentane 0.72
Normal heptane 0.79
C
8On a small quantity
Generally can be used for polymer solvent raffinate oil or the specification of hydrogenated gasoline as follows:
Boiling range: 60~140 ℃, be preferably 60~90 ℃
Iodine number :≤0.4g/100g
Water-content: do not have
Water-soluble soda acid: neutrality
In the preparation method of conjugated-diolefin/uni-vinyl-arene copolymer rubber of the present invention, used composite additive is Lewis base, anion surfactant and the mixture of raffinating oil in the polymerization process.Various Lewis base compounds can be selected for use, preferably select for use ether compound or tertiary amine compound as polar additive and structure regulator, can select tetrahydrofuran (THF), tetrahydropyrans or 1,4-dioxane for use as cyclic ether compounds; Aliphatic monoether can be selected Anaesthetie Ether or dibutyl ether for use; The optional spent glycol dme of aliphatic polyether, ethylene glycol diethyl ether, ethylene glycol dibutyl ether, diglyme, diethyl carbitol or diethylene glycol dibutyl ether; Aromatic oxide can be selected diphenyl ether, methyl-phenoxide or similar ether for use; Tertiary amine compound can be selected triethylamine, tripropyl amine, Tributylamine or other compound such as N, N, N ' for use, N '-Tetramethyl Ethylene Diamine, N, N-Diethyl Aniline, pyridine or quinoline etc., its consumption is 10~30% weight based on the composite additive total amount, preferred 15~25% weight; Anion surfactant is selected the Sulfonates compound of the alkyl that contains 4~20 carbon atoms for use, and as Sodium dodecylbenzene sulfonate or Potassium dodecylbenzenesulfonate, its consumption is 3~15% weight based on the composite additive total amount, preferred 5~12% weight; Raffinating oil and selecting boiling range for use is the hydrogenated gasoline that 60~90 ℃ platformate raffinate or boiling range are 60~90 ℃, and wherein boiling range is that 60-90 ℃ platformate raffinate is meant from platformate raffinate and extracts remaining that part of oil behind the aromatic hydrocarbons.In composite additive, the consumption of raffinating oil is 55~87% weight based on the composite additive total amount, preferred 65~80% weight.
In the preparation method of conjugated-diolefin/uni-vinyl-arene copolymer rubber of the present invention, the consumption of composite additive should make that the weight ratio of itself and organic lithium initiator is 1~40, preferred 10~30.
In the preparation method of conjugated-diolefin/uni-vinyl-arene copolymer rubber of the present invention, used organic lithium initiator is commonly used those in anionoid polymerization field in the polymerization process, the preferred organic single-lithium that uses, those shown in the formula RLi for example, wherein R is the C of straight or branched
1-C
7Alkyl, C
3-C
6Cycloalkyl or C
6-C
12Aryl as lithium ethide, propyl lithium, sec.-propyl lithium, n-Butyl Lithium, s-butyl lithium, amyl group lithium, hexyl lithium, cyclohexyl lithium, phenyl lithium, aminomethyl phenyl lithium, naphthyl lithium etc., but is preferably selected n-Butyl Lithium or s-butyl lithium for use.The consumption of initiator depends on the size of design molecular weight in the polymerization process.General initiator amount is that every 100g monomer need add 0.3~2.5mmol.
In the preparation method of conjugated-diolefin/uni-vinyl-arene copolymer rubber of the present invention, operable rare gas element is commonly used those in this area, as nitrogen, argon gas or helium etc.
In the preparation method of conjugated-diolefin/uni-vinyl-arene copolymer rubber of the present invention, operable coupling agent is many vinyl compounds, halogenide, ether, aldehyde, ketone, ester etc., as Vinylstyrene, tetrem thiazolinyl silane, tetrachloromethane, silicon tetrachloride, tin tetrachloride, dimethyl terephthalate (DMT) etc.Coupling agent is Vinylstyrene, silicon tetrachloride or tin tetrachloride etc. preferably.It is 0.1~2 that the consumption of coupling agent should make the mol ratio of coupling agent and organic lithium initiator.
In the preparation method of conjugated-diolefin/uni-vinyl-arene copolymer rubber of the present invention, operable terminator is water or alcohols, as being methyl alcohol, ethanol, Virahol etc., preferably selects Virahol for use.It is 0.1~1 that the consumption of terminator should make the mol ratio of terminator and organic lithium initiator.
In the preparation method of conjugated-diolefin/uni-vinyl-arene copolymer rubber of the present invention, operable anti-aging agent can be normally used phenols or amine, be preferably 2,6-ditertbutylparacresol (abbreviation antioxidant 264), tert-butyl catechol, 2,2 '-methylene radical-two (4-methyl-6-tert butyl phenol) (abbreviation antioxidant 2246) etc.The add-on of anti-aging agent is 0.5~2% weight based on polymkeric substance generally.
In the preparation method of conjugated-diolefin/uni-vinyl-arene copolymer rubber of the present invention, the polymeric reaction temperature in step 1) is generally 0~150 ℃, and preferred 20~110 ℃, most preferably 30~90 ℃.
In the preparation method of conjugated-diolefin/uni-vinyl-arene copolymer rubber of the present invention, the polymerization pressure in step 1) is generally 0.1~0.8MPa, preferred 0.1~0.4MPa, most preferably 0.1~0.3MPa.
According to the present invention, carry out the copolymerization of conjugated diene and monovinylarene as solvent by using specific composite additive also to use to raffinate oil as structure regulator, can be at short notice, for example in 5-30 minute, especially in 7-20 minute, finish polyreaction, so production efficiency and plant factor are all very high.In addition, it is 60% or higher copolymer rubber that the method according to this invention can obtain contents of ethylene, and coupling efficiency reaches more than 70% simultaneously, and described copolymer rubber has high wet-sliding resistant and low-rolling-resistance, is particularly suitable for making tire tread.
Embodiment
Describe the present invention in detail by embodiment and Comparative Examples below, but scope of the present invention is not limited to these embodiment.
Initiator concentration records with two volumetrys in an embodiment; The molecular weight of polymkeric substance and coupling efficiency are tested with gel permeation chromatograph (mobile phase solvent is THF for day island proper Tianjin LC-10Atvp of company series, normal temperature mensuration); Vinyl structure content infrared spectrometer in styrene content and the divinyl chain (U.S. FTS3000 of BIO-RAD company type infrared spectrometer, normal temperature is measured, the liquid pool method, solvent is CS
2, scanning times 32 times) and test; (measure by U.S. TA-DMA2980 viscoelastic spectrometer with viscoelastic spectrometer for the tan δ value of rubber unvulcanizate.Frequency 2Hz, 5 ℃/min of temperature rise rate ,-120 ℃~+ 100 ℃, batten size: 40mm*5mm*1mm) test.
Embodiment 1
Test is carried out in 10 liters of polymeric kettles; under the high pure nitrogen protection; in still, add (boiling range is 60~90 ℃ a the platformate raffinate) 7000ml that raffinates oil, vinylbenzene 200 grams, the composite additive GSA (mixture of glycol dimethyl ether, Sodium dodecylbenzene sulfonate and raffinate oil (boiling range is 60~90 ℃ a platformate raffinate) successively; weight ratio is 20: 10: 70) 15g, paradigmatic system is through high-purity N
2After the displacement deoxidation, add divinyl 800 grams, n-Butyl Lithium 0.53g, carry out copolyreaction then.The polymerization kick off temperature is 30 ℃, and reaction pressure is 0.1~0.3MPa.Polyreaction is in the time of 10 minutes, and transformation efficiency reaches 100%, adds tin tetrachloride 0.5g again in polymeric kettle, proceeds linked reaction.Linked reaction adds terminator Virahol 0.5g and antioxidant 2246 10g after finishing once more, carries out termination reaction, after glue condenses through water vapor, obtains the solution polymerized butadiene styrene rubber product of star high-vinyl-content.The structure and the performance data that record copolymer product see Table 1.
Embodiment 2
Test is carried out in 10 liters of polymeric kettles; under the high pure nitrogen protection; in still, add (boiling range is 60~90 ℃ a the platformate raffinate) 7000ml that raffinates oil, vinylbenzene 250 grams, the composite additive GSA (mixture of glycol dimethyl ether, Sodium dodecylbenzene sulfonate and raffinate oil (boiling range is 60~90 ℃ a platformate raffinate) successively; weight ratio is 20: 10: 70) 15g, paradigmatic system is through high-purity N
2After the displacement deoxidation, add divinyl 750 grams, n-Butyl Lithium 0.53g, carry out copolyreaction then.The polymerization kick off temperature is 30 ℃, and reaction pressure is 0.1~0.3MPa.Polyreaction is in the time of 10 minutes, and transformation efficiency reaches 100%, adds tin tetrachloride 0.5g again in polymeric kettle, proceeds linked reaction.Linked reaction adds terminator Virahol 0.5g and antioxidant 2246 10g after finishing once more, carries out termination reaction, after glue condenses through water vapor, obtains the solution polymerized butadiene styrene rubber product of star high-vinyl-content.The structure and the performance data that record copolymer product see Table 1.
Embodiment 3
Test is carried out in 10 liters of polymeric kettles; under the high pure nitrogen protection; in still, add (boiling range is 60~90 ℃ a the platformate raffinate) 7000ml that raffinates oil, vinylbenzene 150 grams, the composite additive GSA (mixture of glycol dimethyl ether, Sodium dodecylbenzene sulfonate and raffinate oil (boiling range is 60~90 ℃ a platformate raffinate) successively; weight ratio is 20: 10: 70) 15g, paradigmatic system is through high-purity N
2After the displacement deoxidation, add divinyl 850 grams, n-Butyl Lithium 0.53g, carry out copolyreaction then.The polymerization kick off temperature is 30 ℃, and reaction pressure is 0.1~0.3MPa.Polyreaction is in the time of 10 minutes, and transformation efficiency reaches 100%, adds tin tetrachloride 0.5g again in polymeric kettle, proceeds linked reaction.Linked reaction adds terminator Virahol 0.5g and antioxidant 2246 10g after finishing once more, carries out termination reaction, after glue condenses through water vapor, obtains the solution polymerized butadiene styrene rubber product of star high-vinyl-content.The structure and the performance data that record copolymer product see Table 1.
Embodiment 4
Test is carried out in 10 liters of polymeric kettles; under the high pure nitrogen protection; in still, add (boiling range is 60~90 ℃ a the platformate raffinate) 7000ml that raffinates oil, vinylbenzene 200 grams, the composite additive GSA (mixture of glycol dimethyl ether, Sodium dodecylbenzene sulfonate and raffinate oil (boiling range is 60~90 ℃ a platformate raffinate) successively; weight ratio is 20: 10: 70) 15g, paradigmatic system is through high-purity N
2After the displacement deoxidation, add divinyl 800 grams, n-Butyl Lithium 0.53g, carry out copolyreaction then.The polymerization kick off temperature is 40 ℃, and reaction pressure is 0.1~0.3MPa.Polyreaction is in the time of 10 minutes, and transformation efficiency reaches 100%, adds tin tetrachloride 0.5g again in polymeric kettle, proceeds linked reaction.Linked reaction adds terminator Virahol 0.5g and antioxidant 2246 10g after finishing once more, carries out termination reaction, after glue condenses through water vapor, obtains the solution polymerized butadiene styrene rubber product of star high-vinyl-content.The structure and the performance data that record copolymer product see Table 1.
Embodiment 5
Test is carried out in 10 liters of polymeric kettles; under the high pure nitrogen protection; in still, add (boiling range is 60~90 ℃ a the platformate raffinate) 7000ml that raffinates oil, vinylbenzene 200 grams, the composite additive GSA (mixture of glycol dimethyl ether, Sodium dodecylbenzene sulfonate and raffinate oil (boiling range is 60~90 ℃ a platformate raffinate) successively; weight ratio is 20: 5: 75) 15g, paradigmatic system is through high-purity N
2After the displacement deoxidation, add divinyl 800 grams, n-Butyl Lithium 0.53g, carry out copolyreaction then.The polymerization kick off temperature is 30 ℃, and reaction pressure is 0.1~0.3MPa.Polyreaction is in the time of 10 minutes, and transformation efficiency reaches 100%, adds silicon tetrachloride 0.5g again in polymeric kettle, proceeds linked reaction.Linked reaction adds terminator Virahol 0.5g and antioxidant 2246 10g after finishing once more, carries out termination reaction, after glue condenses through water vapor, obtains the solution polymerized butadiene styrene rubber product of star high-vinyl-content.The structure and the performance data that record copolymer product see Table 1.
Comparative Examples 6
Test is carried out in 10 liters of polymeric kettles, under the high pure nitrogen protection, adds hexanaphthene 7000ml, vinylbenzene 200 grams, structural additives THF 18g successively in still, and paradigmatic system is through high-purity N
2After the displacement deoxidation, add divinyl 800 grams, n-Butyl Lithium 0.53g, carry out copolyreaction then.The polymerization kick off temperature is 30 ℃, and reaction pressure is 0.1~0.3MPa.After the polyreaction 3 hours, transformation efficiency reaches 100%, adds tin tetrachloride 0.5g again in polymeric kettle, proceeds linked reaction.Linked reaction adds terminator Virahol 0.5g and antioxidant 2246 10g after finishing once more, carries out termination reaction, after glue condenses through water vapor, obtains the solution polymerized butadiene styrene rubber product of star high-vinyl-content.The structure and the performance data that record copolymer product see Table 1.
Comparative Examples 7
Test is carried out in 10 liters of polymeric kettles, under the high pure nitrogen protection, adds mixed solvent (hexanaphthene and normal hexane, volume ratio 9: 1) 7000ml, vinylbenzene 200 grams, structural additives THF 18g successively in still, and paradigmatic system is through high-purity N
2After the displacement deoxidation, add divinyl 800 grams, reacting liquid temperature reduced to 10 ℃, add n-Butyl Lithium 0.53g, carry out copolyreaction then by cooling.Reaction pressure is 0.1~0.3MPa.After the polyreaction 5 hours, transformation efficiency reaches 100%, adds tin tetrachloride 0.5g again in polymeric kettle, proceeds linked reaction.Linked reaction adds terminator Virahol 0.5g and antioxidant 2246 10g after finishing once more, carries out termination reaction, after glue condenses through water vapor, obtains the solution polymerized butadiene styrene rubber product of star high-vinyl-content.The structure and the performance data that record copolymer product see Table 1.
Comparative Examples 8
Test is carried out in 10 liters of polymeric kettles; under the high pure nitrogen protection; in still, add (boiling range is 60~90 ℃ a the platformate raffinate) 7000ml that raffinates oil, vinylbenzene 250 grams, the composite additive GSA (mixture of glycol dimethyl ether, Sodium dodecylbenzene sulfonate and hexanaphthene/normal hexane (volume ratio is 90: 1) successively; weight ratio is 20: 10: 70) 16g, paradigmatic system is through high-purity N
2After the displacement deoxidation, add divinyl 750 grams, n-Butyl Lithium 0.53g, carry out copolyreaction then.The polymerization kick off temperature is 30 ℃, and reaction pressure is 0.1~0.3MPa.After the polyreaction 1.5 hours, transformation efficiency reaches 100%, adds tin tetrachloride 0.5g again in polymeric kettle, proceeds linked reaction.Linked reaction adds terminator Virahol 0.5g and antioxidant 2246 10g after finishing once more, carries out termination reaction, after glue condenses through water vapor, obtains the solution polymerized butadiene styrene rubber product of star high-vinyl-content.The structure and the performance data that record copolymer product see Table 1.
The structure of table 1 copolymer product and performance data
| Embodiment number |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
| Mn (ten thousand) |
12.0 |
11.9 |
12.0 |
12.1 |
11.8 |
12.3 |
12.1 |
14.2 |
| CE% |
75 |
76 |
75 |
76 |
80 |
55 |
50 |
55 |
| St% |
20 |
25 |
15 |
20 |
20 |
20 |
20 |
25 |
| Bv% |
70 |
69 |
70 |
60 |
69 |
50 |
54 |
65 |
| Ct% |
20 |
19 |
19 |
26 |
20 |
33 |
32 |
18 |
| Cc% |
10 |
12 |
11 |
14 |
11 |
17 |
14 |
17 |
| tanδ(0℃) |
1.012 |
1.083 |
0.9665 |
0.8141 |
0.8199 |
0.4007 |
0.4431 |
0.8350 |
| Tanδ(60 ℃) |
0.1060 |
0.1035 |
0.1096 |
0.1101 |
0.0986 |
0.1114 |
0.1082 |
0.1128 |
Annotate:
Mn (ten thousand) is basic number-average molecular weight; CE% is a coupling efficiency; St% is a styrene content; Bv% is 1, the 2-structural content; Cc% is suitable-1,4 structural content; Ct% is anti--1,4 structural content; Cure conditions:
Rubber: 200g; SULPHUR POWDER: 3.4g; Stearic acid: 4g; Anti-aging agent (N-Phenyl beta naphthylamine): 2g; Carbon black: 90g; Promotor (N-cyclohexyl-2-[4-morpholinodithio base sulphenamide): 2g; Zinc oxide: 10g; Curing time: 50 minutes; Curing temperature: 145~150 ℃.