Unsaturated nitrile-conjugated diene copolymer, process for producing
same and vulcanizable rubber composition
    5.
    发明授权
    Unsaturated nitrile-conjugated diene copolymer, process for producing same and vulcanizable rubber composition 失效
    不饱和腈共轭二烯共聚物,其制备方法和可硫化橡胶组合物

    公开(公告)号:US5703189A

    公开(公告)日:1997-12-30

    申请号:US793677

    申请日:1997-02-28

    摘要: An saturated nitrile-conjugated diene copolymer obtained by copolymerizing acrylonitrile with butadiene in the presence of a free radical initiator and an alkylthiol compound as a molecular weight modifier. A part of the monomers is incorporated in a monomer charge before polymerization, and the remainder thereof is added in a polymerization mixture during polymerization. The alkylthiol compound has 12 to 16 carbon atoms, which include at least three tertiary carbon atoms, and further has a sulfur atom directly bound to at least one of the tertiary carbon atoms. The copolymer has a Mooney viscosity of 15 to 450 and a bound nitrile content of 10 to 60% by weight. The breadth (.DELTA.AN) of compositional distribution of the unsaturated nitrile in the copolymer is 3 to 20. The copolymer is used in combination with a sulfur-containing vulcanizer.

    摘要翻译: PCT No.PCT / JP95 / 01132 Sec。 371日期1997年2月28日 102(e)日期1997年2月28日PCT提交1995年6月7日PCT公布。 公开号WO96 / 06868 日期:1996年3月7日在自由基引发剂和烷基硫醇化合物作为分子量调节剂的存在下,通过丙烯腈与丁二烯共聚得到的饱和腈共轭二烯共聚物。 一部分单体在聚合前加入单体电荷中,其余部分在聚合过程中加入到聚合混合物中。 烷基硫醇化合物具有12至16个碳原子,其包括至少三个叔碳原子,并且还具有直接键合至至少一个叔碳原子的硫原子。 共聚物的门尼粘度为15〜450,结合腈含量为10〜60重量%。 共聚物中不饱和腈的组成分布的宽度(DELTA AN)为3〜20。该共聚物与含硫硫化剂组合使用。