| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel cross copolymer improved in heat resistance in comparison with a conventional one, and at the same time, improved in other physical properties. SOLUTION: The novel cross copolymer, which is improved in heat resistance in comparison with a conventional ethylene-aromatic vinyl compound copolymer and a conventional cross copolymer, and a resin composition are provided. The method for producing the above cross copolymer includes a polymerization process consisting of a coordination polymerization process and a radical polymerization process. In the coordination polymerization process, an aromatic polyene copolymerization macromer is composed by using a single site coordination polymerization catalyst, and subsequently in the radical polymerization process, polymerization is carried out by using a radical polymerization initiator under coexistence of the aromatic polyene copolymerization macromer, an aromatic vinyl compound, and an unsaturated dicarboxylic anhydride, or an imidized unsaturated dicarboxylic anhydride. COPYRIGHT: (C)2009,JPO&INPIT |
