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    • 3. 发明授权
    • Solution polymerization process for synthesis of styrene-butadiene or
styrene-isoprene rubber
    • 用于合成苯乙烯 - 丁二烯或苯乙烯 - 异戊二烯橡胶的溶液聚合方法
    • US5679751A
    • 1997-10-21
    • US599542
    • 1996-02-12
    • Adel Farhan HalasaLaurie Elizabeth AustinWen-Liang HsuBill Bud Gross
    • Adel Farhan HalasaLaurie Elizabeth AustinWen-Liang HsuBill Bud Gross
    • B60C1/00C08F4/46C08F4/48C08F236/10
    • B60C1/0016C08F236/10
    • The subject invention relates to a technique for synthesizing rubbery copolymers of styrene and butadiene and/or isoprene. These rubbers exhibit an excellent combination of properties for utilization in high performance tire tread rubber compounds. The subject invention specifically discloses a process for preparing a styrene-butadiene rubber (SBR) which comprises: copolymerizing from about 30 weight percent to about 55 weight percent styrene and from about 45 weight percent to about 70 weight percent 1,3-butadiene in an alkane solvent, such as hexane, at a temperature which is within the range of about -10.degree. C. to about 150.degree. C. in the presence of (a) an alkali metal alkoxide, and (b) an organolithium compound, wherein the molar ratio of the alkali metal alkoxide to the organolithium compound is within the range of about 0.01:1 to about 1:1. The subject invention further discloses a process for preparing a rubbery copolymer of styrene and isoprene having an excellent combination of properties for use in making tire treads by a solution polymerization process which comprises: copolymerizing from about 30 weight percent to about 55 weight percent styrene and from about 45 weight percent to about 70 weight percent isoprene in an alkane solvent at a temperature which is within the range of about -10.degree. C. to about 150.degree. C. in the presence of (a) an alkali metal alkoxide, and (b) an organolithium compound, wherein the molar ratio of the alkali metal alkoxide to the organolithium compound is within the range of about 0.01:1 to about 1:1.
    • 本发明涉及一种合成苯乙烯和丁二烯和/或异戊二烯橡胶共聚物的技术。 这些橡胶在高性能轮胎胎面橡胶化合物中表现出优异的性能组合。 本发明具体公开了一种制备苯乙烯 - 丁二烯橡胶(SBR)的方法,其包括:以约30重量%至约55重量%的苯乙烯和约45重量%至约70重量%的1,3-丁二烯的共聚合 烷烃溶剂如己烷,在(a)碱金属醇盐存在下,在约-10℃至约150℃的温度范围内,和(b)有机锂化合物,其中, 碱金属醇盐与有机锂化合物的摩尔比在约0.01:1至约1:1的范围内。 本发明进一步公开了一种制备苯乙烯和异戊二烯的橡胶共聚物的方法,其具有通过溶液聚合方法制备轮胎胎面的优异的性能组合,其包括:共聚约30重量%至约55重量%的苯乙烯和 在(a)碱金属醇盐存在下,在约-10℃至约150℃的温度下,在烷烃溶剂中约45重量%至约70重量%的异戊二烯,和(b )有机锂化合物,其中碱金属醇盐与有机锂化合物的摩尔比在约0.01:1至约1:1的范围内。
    • 5. 发明授权
    • Tire innerliner composition
    • 轮胎内衬组成
    • US5922153A
    • 1999-07-13
    • US12288
    • 1998-01-23
    • Roger Neil BeersDavid Andrew BenkoBill Bud GrossAdel Farhan Halasa
    • Roger Neil BeersDavid Andrew BenkoBill Bud GrossAdel Farhan Halasa
    • B60C1/00C08L23/28C08L53/00B60C5/14
    • B60C1/0008C08L23/283C08L53/00Y10S152/16
    • A halobutyl rubber is generally used in the innerliner of pneumatic tires to retard the escape of air used to inflate the tire, thereby maintaining tire pressure. Since halobutyl rubbers, such as bromobutyl rubber, are generally the most expensive elastomers used in tires, it is desirable from a standpoint of cost reduction to reduce the level of halobutyl rubbers used in tires. The present invention relates to a technique for reducing the quantity of halobutyl rubber utilized in the innerliner of tubeless pneumatic vehicle tires. The present invention more specifically relates to a tire innerliner and pneumatic tires containing the same, which are prepared from a composition comprising, based on 100 parts by weight of rubber, a blend of (1) about 50 parts to about 90 parts of a halobutyl rubber and (2) about 10 parts to about 50 parts of a styrene-isoprene-butadiene terpolymer rubber having a first glass transition temperature which is within the range of about -110.degree. C. to about -20.degree. C. and a second glass transition temperature which is within the range of about -50.degree. C. to about 0.degree. C., wherein said styrene-isoprene-butadiene terpolymer rubber contains about 20 weight percent to about 40 weight percent bound styrene.
    • 通常,在充气轮胎的内衬层中使用卤代丁基橡胶,以阻止用于使轮胎充气的空气的逸出,从而保持轮胎压力。 由于卤代丁基橡胶(例如溴丁基橡胶)通常是轮胎中使用的最昂贵的弹性体,因此从成本降低的观点来看,期望降低轮胎中使用的卤代丁基橡胶的含量。 本发明涉及减少无内胎气动车辆轮胎的内衬中使用的卤代丁基橡胶的量的技术。 本发明更具体地涉及一种包含其的轮胎内衬和充气轮胎,其由基于100重量份橡胶的组合物制备,(1)约50重量份至约90重量份的卤代丁基 橡胶和(2)约10份至约50份第一玻璃化转变温度在约-110℃至约-20℃范围内的苯乙烯 - 异戊二烯 - 丁二烯三元共聚物橡胶和第二玻璃 转化温度在约-50℃至约0℃的范围内,其中所述苯乙烯 - 异戊二烯 - 丁二烯三元共聚物橡胶含有约20重量%至约40重量%的结合苯乙烯。