A hydrogenated crystalline norbornene ring-opening polymer is obtained by hydrogenating 80% or more of carbon-carbon double bonds of a ring-opening polymer that is obtained by ring-opening polymerization of norbornene monomers including 90 to 100 wt% of 2-norbornene and 0 to 10 wt% of a 2-norbornene derivative having a substituent which does not include an aliphatic carbon-carbon double bond in the presence of a branching agent, the hydrogenated crystalline norbornene ring-opening polymer having a melting point of 110 to 145°C and a branching index of 0.3 to 0.98, and a molded article is obtained by molding the hydrogenated crystalline norbornene ring-opening polymer. The hydrogenated crystalline norbornene ring-opening polymer has excellent industrial productivity, and the molded article has excellent productivity and moisture resistance.
氢化结晶
降冰片烯开环聚合物是通过氢化开环聚合物中 80% 或更多的碳碳双键而获得的,该开环聚合物是通过
降冰片烯单体(包括 90 至 100 wt% 的 2-
降冰片烯和 0 至 10 wt%的 2-
降冰片烯衍
生物,其取代基不包括脂肪族碳碳双键)在支化剂存在下进行开环聚合而获得的、氢化结晶
降冰片烯开环聚合物的熔点为 110 至 145°C,支化指数为 0.3 至 0.98,通过模塑氢化结晶
降冰片烯开环聚合物可获得模塑制品。氢化结晶
降冰片烯开环聚合物具有优异的工业生产率,模塑制品具有优异的生产率和防潮性能。