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CN100390213C - Star-shaped solution-polymerized conjugated diene/monovinylarene copolymer rubber with high vinyl content and preparation method thereof - Google Patents

Star-shaped solution-polymerized conjugated diene/monovinylarene copolymer rubber with high vinyl content and preparation method thereof Download PDF

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CN100390213C
CN100390213C CNB2005100522286A CN200510052228A CN100390213C CN 100390213 C CN100390213 C CN 100390213C CN B2005100522286 A CNB2005100522286 A CN B2005100522286A CN 200510052228 A CN200510052228 A CN 200510052228A CN 100390213 C CN100390213 C CN 100390213C
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conjugated diene
raffinate
ether
monovinylarene
vinyl
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CN1814641A (en
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王世朝
孙文娟
李伟
梁爱民
李传清
于国柱
刘慧玲
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Sinopec Beijing Yanhua Petrochemical Co Ltd
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Sinopec Beijing Yanhua Petrochemical Co Ltd
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Abstract

本发明涉及一种星型高乙烯基含量的溶聚共轭二烯烃/单乙烯基芳烃共聚物橡胶及其制备方法。本发明以复合添加剂(路易斯碱、阴离子表面活性剂和抽余油的混合物)为结构调节剂,使共轭二烯烃和单乙烯基芳烃发生共聚反应,经偶联反应后即得产品。该方法的反应时间短,例如为10分钟左右,生产效率和设备利用率高,所得产品的乙烯基结构含量达到60%以上,同时偶联效率达到70%以上,具备高抗湿滑性和低滚动阻力,特别适合于制造轮胎胎面。The invention relates to a star-shaped solution-polymerized conjugated diene/monovinylarene copolymer rubber with high vinyl content and a preparation method thereof. The invention uses composite additives (a mixture of Lewis base, anionic surfactant and raffinate oil) as a structure regulator to make conjugated diolefins and monovinylarenes undergo copolymerization reactions, and obtain products after coupling reactions. The reaction time of this method is short, such as about 10 minutes, and the production efficiency and equipment utilization rate are high. The vinyl structure content of the obtained product reaches more than 60%, and the coupling efficiency reaches more than 70%. Rolling resistance, especially suitable for making tire treads.

Description

Soluble poly-conjugated-diolefin/uni-vinyl-arene copolymer rubber of star high-vinyl-content and preparation method thereof
Invention field
The present invention relates to a kind of method for preparing novel conjugated-diolefin/uni-vinyl-arene copolymer rubber, more particularly, relate to the new copolymer rubber and the application thereof of a kind of method of the soluble poly-conjugated-diolefin/uni-vinyl-arene copolymer rubber for preparing star high-vinyl-content and preparation thus.
Background of invention
The current rubber of tread rubber of automobile tires that is applicable to not only will have good abrasion resistance, also will have high wet-sliding resistant and low-rolling-resistance, could satisfy demand energy-conservation and safety traffic like this.And these two kinds of performance demands of low-rolling-resistance and high wet-sliding resistant are conflicting, and the rubber of single variety is difficult to satisfy simultaneously this two kinds of requirements.Method with blend just makes two kinds of performances improve to some extent two kinds of blend rubbers that have low-rolling-resistance and high wet-sliding resistant respectively, is difficult to obtain the ideal product.For improving the anti-slippery and the rolling resistance of rubber item, attempt mainly to reach with divinyl rubber or the styrene-butadiene rubber(SBR) that organic lithium initiator obtains by modification.For example, by Molecular Structure Design, can synthesize multipolymer and homopolymer with low-rolling-resistance and high wet-sliding resistant.The rolling resistance of rubber item and anti-slippery can be characterized by the tan δ value of 60 ℃ and 0 ℃ in its viscoelastic spectra usually, and the value of the tan δ in the time of 60 ℃ is low more, and the rolling resistance of rubber is more little, and the tan δ value in the time of 0 ℃ is high, and the anti-slippery of rubber is good more.
US 4,367, and 325 and US4, mentioned a kind of method that adopts the solution polymerized butadiene styrene rubber of the synthetic high-vinyl-content of anionoid polymerization in 139,690, it is the composite structure conditioning agent that this method adopts ethers and anion surfactant, because of initiation reaction at low temperatures, long reaction time.
US 5, also mentioned a kind of method that adopts the solution polymerized butadiene styrene rubber of the synthetic star high-vinyl-content of anionoid polymerization in 008,343, this method is the activator and the structure regulator of reaction with the asymmetrical ether, because the complex ability of asymmetrical ether is poor, so long reaction time; And the method that this patent relates to will be carried out removing of reaction heat, polymerization technique complexity when reaction reaches a high temperature.
US 4,397, also mentioned a kind of method that adopts the solution polymerized butadiene styrene rubber of the synthetic star high-vinyl-content of anionoid polymerization in 994, this method adopts cyclic ethers (THF) as structure regulator, initiation reaction at low temperatures, this method running cost height, long reaction time are unfavorable for suitability for industrialized production.
Summary of the invention
Based on above-mentioned prior art situation, the present inventor has carried out research extensively and profoundly in the styrene-butadiene rubber(SBR) field, a kind ofly not only has good abrasion resistance in the hope of developing, but also has the styrene-butadiene rubber(SBR) of high wet-sliding resistant and low-rolling-resistance.Found that by in divinyl and cinnamic polymerization process, using specific structure regulator and being used in combination to raffinate oil and be solvent, can at room temperature cause and carry out polyreaction, when reaction high temperature, need not remove reaction heat, and produce the solution polymerized butadiene styrene rubber product of the star high-vinyl-content that satisfies above-mentioned performance requriements thus.The present invention just is being based on this discovery and is being accomplished.
General purpose of the present invention is to provide a kind of novel method for preparing conjugated-diolefin/uni-vinyl-arene copolymer rubber, this method at room temperature causes and carries out polyreaction, reaction heat need not be removed during polyreaction high temperature, technological process is simple, reaction times is short, production efficiency and plant factor height.
A comparatively concrete purpose of the present invention is to provide a kind of method for preparing the soluble poly-conjugated-diolefin/uni-vinyl-arene copolymer rubber of star high-vinyl-content, comprise making conjugated diene and monovinylarene, carry out coupling and termination then as carrying out copolymerization at organic lithium initiator and Lewis base, anion surfactant and the mixture of raffinating oil in the presence of as composite additive in the raffinating oil of solvent.
Another object of the present invention is to provide the soluble poly-conjugated-diolefin/uni-vinyl-arene copolymer rubber product of the new star high-vinyl-content of a class, especially styrene-butadiene rubber(SBR) product, this series products has high moisture resistance and low-rolling-resistance, be particularly suitable for making tire tread, can use separately, also can use with other rubber mix.
Therefore, one aspect of the present invention provides a kind of method for preparing the soluble poly-conjugated-diolefin/uni-vinyl-arene copolymer rubber of star high-vinyl-content, comprises the steps:
1) adopting organolithium under inert gas environment is initiator, is composite additive with Lewis base, anion surfactant and the mixture of raffinating oil, as the copolymerization of carrying out conjugated diene and monovinylarene in the raffinating oil of solvent;
2) after finishing, polyreaction adds coupling agent;
3) after linked reaction is finished, add terminator and anti-aging agent, condense in the usual way then and drying.
The present invention provides the soluble poly-conjugated-diolefin/uni-vinyl-arene copolymer rubber of the new star high-vinyl-content of a class on the other hand, and therein ethylene base content is 60% or higher.
Further aspect of the present invention provides the goods based on the soluble poly-conjugated-diolefin/uni-vinyl-arene copolymer rubber of above-mentioned star high-vinyl-content, as tire.
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 ℃.

Claims (25)

1.一种制备星型高乙烯基含量的溶聚共轭二烯烃/单乙烯基芳烃共聚物橡胶的方法,包括如下步骤:1. A method for preparing star-shaped high vinyl content solution-polymerized conjugated diene/monovinylarene copolymer rubber, comprising the steps: 1)在惰性气体环境下采用有机锂为引发剂,以路易斯碱、阴离子表面活性剂和抽余油的混合物为复合添加剂,在作为溶剂的抽余油中进行共轭二烯烃和单乙烯基芳烃的共聚合;1) Under an inert gas environment, organic lithium is used as an initiator, and a mixture of Lewis base, anionic surfactant and raffinate is used as a composite additive, and conjugated diene and monovinylarene are carried out in raffinate as a solvent. the copolymerization; 2)在聚合反应完成后加入偶联剂;2) After the polymerization reaction is completed, a coupling agent is added; 3)在偶联反应完成后加入终止剂和防老剂,然后按常规方式进行凝聚和干燥;3) After the coupling reaction is completed, add a terminator and an anti-aging agent, and then carry out coagulation and drying in a conventional manner; 其中在步骤1)中共轭二烯烃基于单体总量为25-95%重量,而单乙烯基芳烃基于单体总量为5-75%重量;作为溶剂的抽余油的用量应使单体浓度为2~70g总单体/100ml溶剂;有机锂引发剂的用量为每100g单体需加入0.3~2.5mmol;所述复合添加剂为路易士碱、阴离子表面活性剂和抽余油的混合物且复合添加剂与有机锂引发剂的重量比为1~40。Wherein in step 1) the conjugated diene is 25-95% by weight based on the total amount of monomers, and the monovinylarene is 5-75% by weight based on the total amount of monomers; the amount of raffinate as solvent should make the monomer The concentration is 2-70g total monomer/100ml solvent; the dosage of organolithium initiator is 0.3-2.5mmol per 100g monomer; the composite additive is a mixture of Lewis base, anionic surfactant and raffinate oil and The weight ratio of the composite additive to the organic lithium initiator is 1-40. 2.根据权利要求1的方法,其中在步骤1)中共轭二烯烃基于单体总量为50-90%重量,而单乙烯基芳烃基于单体总量为10-50%重量。2. The process according to claim 1, wherein in step 1) the conjugated diene is 50-90% by weight, based on the total amount of monomers, and the monovinylarene is 10-50% by weight, based on the total amount of monomers. 3.根据权利要求1的方法,其中作为溶剂的抽余油的用量应使单体浓度为5~50g总单体/100ml溶剂。3. The method according to claim 1, wherein the consumption of the raffinate oil as solvent should make the monomer concentration be 5~50g total monomer/100ml solvent. 4.根据权利要求1的方法,其中复合添加剂与有机锂引发剂的重量比为10~30。4. The method according to claim 1, wherein the weight ratio of composite additive and organolithium initiator is 10~30. 5.根据权利要求1的方法,其中所述路易斯碱为环醚化合物,脂族单醚,脂族聚醚,芳香醚,叔胺化合物或选自N,N,N’,N’-四甲基乙二胺、N,N-二乙基苯胺、吡啶或喹啉的其它化合物,其用量基于复合添加剂总量为10~30%重量;所述阴离子表面活性剂为含有4~20个碳原子的烷基的磺酸盐类化合物,其用量基于复合添加剂总量为3~15%重量;所述抽余油为沸程为60~90℃的铂重整抽余油或沸程为60~90℃的加氢汽油,其用量基于复合添加剂总量为5587%重量。5. The method according to claim 1, wherein said Lewis base is a cyclic ether compound, an aliphatic monoether, an aliphatic polyether, an aromatic ether, a tertiary amine compound or is selected from N, N, N', N'-tetramethyl Other compounds of ethylenediamine, N, N-diethylaniline, pyridine or quinoline, the amount of which is based on the total amount of composite additives is 10 to 30% by weight; the anionic surfactant contains 4 to 20 carbon atoms Alkyl sulfonate compounds, the amount of which is 3 to 15% by weight based on the total amount of composite additives; the raffinate is platinum reformed raffinate with a boiling range of 60 to 90°C or a boiling range of 60 to 90°C. The amount of hydrogenated gasoline at 90°C is 5587% by weight based on the total amount of composite additives. 6.根据权利要求5的方法,其中环醚化合物选自四氢呋喃、四氢吡喃或1,4-二氧六环,脂族单醚选自二乙基醚或二丁基醚,脂族聚醚选自乙二醇二甲醚、乙二醇二乙醚、乙二醇二丁醚、二甘醇二甲醚、二甘醇二乙醚或二甘醇二丁醚,芳香醚选自二苯基醚、苯甲醚或类似的醚,以及叔胺化合物选自三乙胺、三丙胺或三丁胺。6. The method according to claim 5, wherein the cyclic ether compound is selected from tetrahydrofuran, tetrahydropyran or 1,4-dioxane, the aliphatic monoether is selected from diethyl ether or dibutyl ether, the aliphatic poly The ether is selected from ethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene glycol dibutyl ether, diglyme, diethylene glycol diethyl ether or diethylene glycol dibutyl ether, and the aromatic ether is selected from diphenyl The ether, anisole or similar ether, and the tertiary amine compound are selected from triethylamine, tripropylamine or tributylamine. 7.根据权利要求5的方法,其中所述路易斯碱的用量基于复合添加剂总量为15~25%重量。7. The method according to claim 5, wherein the amount of the Lewis base is 15-25% by weight based on the total amount of composite additives. 8.根据权利要求5的方法,其中所述阴离子表面活性剂为十二烷基苯磺酸钠或十二烷基苯磺酸钾且其用量基于复合添加剂总量为5~12%重量。8. The method according to claim 5, wherein the anionic surfactant is sodium dodecylbenzenesulfonate or potassium dodecylbenzenesulfonate and its consumption is 5-12% by weight based on the total amount of composite additives. 9.根据权利要求5的方法,其中所述抽余油的用量基于复合添加剂总量为65~80%重量。9. The method according to claim 5, wherein the amount of raffinate oil is 65-80% by weight based on the total amount of composite additives. 10.根据权利要求1的方法,其中步骤1)的聚合反应时间为5-30分钟。10. The method according to claim 1, wherein the polymerization reaction time of step 1) is 5-30 minutes. 11.根据权利要求1-10中任一项的方法,其中所述抽余油是沸程为60~90℃的铂重整抽余油。11. The method according to any one of claims 1-10, wherein the raffinate is a platinum reformed raffinate with a boiling range of 60-90°C. 12.根据权利要求1-10中任一项的方法,其中所述共轭二烯烃选自1,3-丁二烯、异戊二烯、1,3-戊二烯、1,3-己二烯、取代的1,3-戊二烯或取代的1,3-丁二烯,或其混合物;所述单乙烯基芳烃单体选自苯乙烯,C1-C6烷基取代的苯乙烯,或乙烯基上带有取代基的苯乙烯衍生物,或其混合物。12. The process according to any one of claims 1-10, wherein the conjugated diene is selected from 1,3-butadiene, isoprene, 1,3-pentadiene, 1,3-hexadiene Diene, substituted 1,3-pentadiene or substituted 1,3-butadiene, or a mixture thereof; the monovinylarene monomer is selected from styrene, C 1 -C 6 alkyl substituted benzene Ethylene, or styrene derivatives with substituents on the vinyl group, or mixtures thereof. 13.根据权利要求12的方法,其中取代的1,3-丁二烯为2,3-二甲基-1,3-丁二烯或1-苯基-1,3-丁二烯,C1-C6烷基取代的苯乙烯为间-甲基苯乙烯、对-甲基苯乙烯或对-叔丁基苯乙烯,乙烯基上带有取代基的苯乙烯衍生物为α-甲基苯乙烯。13. The method according to claim 12, wherein the substituted 1,3-butadiene is 2,3-dimethyl-1,3-butadiene or 1-phenyl-1,3-butadiene, C 1 -C 6 alkyl substituted styrene is m-methylstyrene, p-methylstyrene or p-tert-butylstyrene, styrene derivatives with substituents on the vinyl group are α-methyl styrene. 14.根据权利要求12的方法,其中所述共轭二烯烃为1,3-丁二烯或异戊二烯且所述单乙烯基芳烃单体为苯乙烯或对-甲基苯乙烯。14. The method according to claim 12, wherein the conjugated diene is 1,3-butadiene or isoprene and the monovinylarene monomer is styrene or p-methylstyrene. 15.根据权利要求14的方法,其中所述共轭二烯烃为1,3-丁二烯且所述单乙烯基芳烃单体为苯乙烯。15. The method according to claim 14, wherein the conjugated diene is 1,3-butadiene and the monovinylarene monomer is styrene. 16.根据权利要求1-10中任一项的方法,其中所述有机锂引发剂为正丁基锂或仲丁基锂。16. The method according to any one of claims 1-10, wherein the organolithium initiator is n-butyllithium or sec-butyllithium. 17.根据权利要求1-10中任一项的方法,其中在步骤2)中使用选自四氯化锡、四氯化硅、二乙烯基苯的偶联剂,且偶联剂与有机锂引发剂的摩尔比为0.1~2。17. The method according to any one of claims 1-10, wherein in step 2), use a coupling agent selected from tin tetrachloride, silicon tetrachloride, divinylbenzene, and the coupling agent and organolithium The molar ratio of the initiator is 0.1-2. 18.根据权利要求1-10中任一项的方法,其中所述终止剂为水、甲醇、异丙醇,且终止剂与有机锂引发剂的摩尔比为0.1~1。18. The method according to any one of claims 1-10, wherein the terminator is water, methanol, isopropanol, and the molar ratio of the terminator to the organolithium initiator is 0.1-1. 19.根据权利要求1-10中任一项的方法,其中所述防老剂为2,6-二叔丁基对甲酚、叔丁基邻苯二酚、2,2’-亚甲基-双(4-甲基-6-叔丁基苯酚),且其用量基于聚合物为0.5~2%重量。19. The method according to any one of claims 1-10, wherein the antioxidant is 2,6-di-tert-butyl-p-cresol, tert-butylcatechol, 2,2'-methylene-bis( 4-methyl-6-tert-butylphenol), and its usage is 0.5-2% by weight based on the polymer. 20.根据权利要求1-10中任一项的方法,其中聚合反应温度为0~150℃。20. The method according to any one of claims 1-10, wherein the polymerization reaction temperature is 0-150°C. 21.根据权利要求20的方法,其中聚合反应温度为20~110℃。21. The method according to claim 20, wherein the polymerization reaction temperature is 20-110°C. 22.根据权利要求1-10中任一项的方法,其中聚合反应压力为0.1~0.8MPa。22. The method according to any one of claims 1-10, wherein the polymerization reaction pressure is 0.1-0.8 MPa. 23.根据权利要求22的方法,其中聚合反应压力为0.1~0.4MPa。23. The method according to claim 22, wherein the polymerization reaction pressure is 0.1-0.4 MPa. 24.一种由根据权利要求1-22中任一项的方法得到的星型溶聚共轭二烯烃/单乙烯基芳烃共聚物橡胶,其特征在于乙烯基结构含量为60%或更高。24. A star-shaped solution-polymerized conjugated diene/monovinylarene copolymer rubber obtained by the process according to any one of claims 1-22, characterized in that the vinyl structure content is 60% or higher. 25.一种基于根据权利要求24的星型溶聚共轭二烯烃/单乙烯基芳烃共聚物橡胶的轮胎。25. A tire based on the star solution polymerized conjugated diene/monovinylarene copolymer rubber according to claim 24.
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