There are disclosed a graft copolymer formed by grafting a styrenic monomer onto a high polymer having double bonds in the side chain to constitute highly syndiotactic polystyrenic chain as the graft component, the graft copolymer having a content of graft component of 0.005 to 99% by weight and a reduced viscosity of 0.01 to 30 dl/g as measured at a concentration of 0.05 g/dl in 1,2,4-trichlorobenzene at 135°C or a melt index of 0.001 to 500 g/10 minutes as measured at 300°C under a load of 2.16 kg; a process for efficiently producing the above graft copolymer using a catalyst comprising specific components; and a resin composition comprising the above graft copolymer, a highly syndiotactic styrenic polymer or other thermoplastic resin and, when necessary, an inorganic or organic filler. The above graft copolymer and resin composition are excellent in resistance to heat and chemicals, electrical properties, moldability, compatibility, impact resistance, etc.
本发明公开了一种接枝共聚物,该接枝共聚物是通过将
苯乙烯单体接枝到侧链中具有双键的高聚物上而形成的,作为接枝组分,该接枝共聚物的接枝组分含量为 0.005 至 99%(重量百分比),在浓度为 0.05克/分升,在135℃的1,2,4-
三氯苯中测得,或在300℃、载荷为2.16公斤的条件下测得,熔融指数为0.001至500克/10分钟;使用由特定组分组成的催化剂高效生产上述接枝共聚物的工艺;以及由上述接枝共聚物、高对位
苯乙烯聚合物或其他热塑性
树脂以及必要时无机或有机填料组成的
树脂组合物。上述接枝共聚物和
树脂组合物具有优异的耐热性、耐
化学性、电气性能、成型性、相容性、抗冲击性等。