A nitrile group-containing highly saturated copolymer rubber which is a hydrogenated product of an unsaturated nitrile-conjugated diene copolymer. The highly saturated copolymer rubber has an alkylthio group having 12 to 16 carbon atoms, which include at least three tertiary carbon atoms, and having a sulfur atom which is directly bound to at least one of the tertiary carbon atoms, and the highly saturated copolymer rubber further has a Mooney viscosity of 15 to 200 and an iodine value not larger than 80. The highly saturated copolymer rubber is produced by copolymerizing an unsaturated nitrile and a conjugated diene by using as a specific alkylthiol molecular weight modifier. The highly saturated copolymer rubber exhibits a high-rate vulcanizability with a sulfur-containing vulcanizer.
一种含有腈基的高饱和共聚橡胶,它是不饱和腈-共轭二烯共聚物的氢化产物。该高饱和度共聚橡胶具有一个具有 12 至 16 个碳原子的烷
硫基,其中包括至少三个叔碳原子,并具有一个直接与至少一个叔碳原子结合的
硫原子,该高饱和度共聚橡胶的门尼粘度为 15 至 200,
碘值不大于 80。高饱和度共聚橡胶是通过使用特定的烷基
硫醇分子量改性剂,使不饱和腈和共轭二烯共聚而成。高饱和度共聚物橡胶在含
硫硫化剂的作用下可进行高速
硫化。