Styrene-butadiene random copolymer and process for the production thereof
    1.
    发明授权
    Styrene-butadiene random copolymer and process for the production thereof 失效
    苯乙烯 - 丁二烯无规共聚物及其制备方法

    公开(公告)号:US4367325A

    公开(公告)日:1983-01-04

    申请号:US254517

    申请日:1981-04-15

    CPC分类号: C08F236/10

    摘要: Styrene-butadiene random copolymers having an average vinyl content of at least 70%, a breadth of the distribution of vinyl contents of at least 20%, a Mooney viscosity (ML.sub.1+4, 100.degree. C.) of 10 to 150, and a styrene content of about 3 to 30% by weight. They are prepared by copolymerizing styrene and butadiene in a hydrocarbon solvent in the presence of an organolithium initiator and a Lewis base and, if necessary, an anionic surface active agent containing --SO.sub.3 M or --OSO.sub.3 M (wherein M is Na, K, Rb or Cs) under temperature-raising conditions. They are rubber materials having low rolling resistance and high wet skid resistance.

    摘要翻译: 平均乙烯基含量至少为70%,乙烯基含量分布宽度至少为20%,门尼粘度(ML1 + 4,100℃)为10至150的苯乙烯 - 丁二烯无规共聚物和 苯乙烯含量为约3至30重量%。 它们是通过在有机锂引发剂和路易斯碱存在下在烃溶剂中共聚合苯乙烯和丁二烯而制备的,如果需要,可以使用含有-SO 3 M或-OSO 3 M的阴离子表面活性剂(其中M是Na,K,Rb或Cs )在升温条件下。 它们是具有低滚动阻力和高抗湿滑性的橡胶材料。