Propylene block copolymer and propylene resin composition
作者： Takao Usami , Toru Suzuki , Yasuo Maruyama , Masao Sakaizawa , Tsuyoshi Ogasawara
DOI:
关键词: Materials science 、 Ethylene 、 Antistatic agent 、 Heat resistance 、 Polymer chemistry 、 Comonomer 、 Copolymer 、 Thermal oxidation 、 Melt flow index 、 Polymer
摘要: Disclosed are a propylene polymer composition possessing excellent balance among rigidity and low warpage, resistance to deterioration caused by thermal oxidation during processing, weathering resistance, antistatic properties, bleeding resin which can easily produce molded products having between impact (particularly low-temperature resistance) or heat resistance. The the comprise block copolymer consisting essentially of following blocks (a) (b) melt flow rate 0.1 200 g/10 min: (a): homopolymer random with comonomer selected from group ethylene C4-C20 α -olefins, content being not more than 10% mole; (b): at least one 10 80% mole, average chain length gross relationship represented formula (I) nb ≦ n + 1.5 wherein represents block; comonomer.
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