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21. 发明授权

US4510303A Ethylene-alpha-olefin-polyene random copolymer rubber 失效
标题翻译：乙烯-α-烯烃 - 多烯无规共聚物橡胶
公开(公告)号：US4510303A
公开(公告)日：1985-04-09
申请号：US492244
申请日：1983-05-06
申请人： Hidekuni Oda , Syuji Minami , Hiroshi Inoue , Akira Matsuda , Yohzoh Yamamoto
发明人： Hidekuni Oda , Syuji Minami , Hiroshi Inoue , Akira Matsuda , Yohzoh Yamamoto
IPC分类号： C08F210/00 , C08F4/00 , C08F4/60 , C08F210/16 , C08F210/18 , C08L23/16
CPC分类号： C08F210/18
摘要： An ethylene-alpha-olefin-polyene random copolymer rubber comprising ethylene, an alpha-olefin having 3 to 10 carbon atoms and a polyene, wherein (A) a molar ratio of ethylene/alpha-olefin is 55/45 to 95/5, (B) the polyene is a mixture of 5-ethylidene-2-norbornene (ENB) and 5-vinyl-2-norbornene (VNB) in a molar ratio of ENB/VNB of 1/1 to 20/1, (C) an iodine value of the copolymer rubber is 2 to 40, (D) an intrinsic viscosity [.eta.] of the copolymer rubber is 1.0 to 6.0 dl/g measured in decalin at 135.degree. C., and (E) g.sub..eta. * defined by a ratio of the intrinsic viscosity [.eta.] to an intrinsic viscosity [.eta.]l of a linear ethylene-propylene random copolymer having an ethylene content of 70 mole % and the same weight-average molecular weight determined by a light-scattering method as that of the copolymer rubber is 0.2 to 0.9. Also a process for preparing this random copolymer rubber and vulcanizate derived from the same are also disclosed. This random copolymer rubber has an excellent extrudability and a fast cure rate and provides a vulcanizate having high tensile strength.
摘要翻译：包含乙烯，具有3-10个碳原子的α-烯烃和多烯的乙烯-α-烯烃 - 多烯无规共聚物橡胶，其中（A）乙烯/α-烯烃的摩尔比为55/45至95/5，（B）多烯是ENB / VNB摩尔比为1/1至20/1的5-亚乙基-2-降冰片烯（ENB）和5-乙烯基-2-降冰片烯（VNB）的混合物，（C）共聚物橡胶的碘值为2〜40，（D）共聚物橡胶的特性粘度η在135℃萘烷中测定为1.0〜6.0dl / g，（E）gη 乙烯含量为70摩尔％的线性乙烯 - 丙烯无规共聚物的特性粘度η与特性粘度ηl的比值与通过光散射法测定的相同重均分子量的共聚物橡胶为0.2〜0.9。还公开了制备该无规共聚物橡胶和由其衍生的硫化橡胶的方法。该无规共聚物橡胶具有优异的挤出性和快速固化速率，并提供具有高拉伸强度的硫化橡胶。

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