发明授权
- 专利标题： Ethylene-alkenyl aromatic compound copolymer, process for the production thereof, and molded article thereof
- 专利标题（中）： 乙烯基烯基芳族化合物共聚物，其制造方法及其成型体
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申请号： US09471254申请日： 1999-12-23
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公开(公告)号： US06388031B1公开(公告)日： 2002-05-14
- 发明人: Nobuo Oi , Yuki Iseki , Yasuro Suzuki
- 申请人： Nobuo Oi , Yuki Iseki , Yasuro Suzuki
- 优先权： JP10-370831 19981225; JP11-056982 19990304
- 主分类号： C08F21002
- IPC分类号： C08F21002
摘要：
An ethylene-alkenyl aromatic compound copolymer, the copolymer having a melt viscosity &eegr;*190 at a shear rate of 100 radian/second at 190° C. of 3.0×103 to 3.0×106 poises, and a molecular weight distribution in terms of weight average molecular weight(Mw) to number average molecular weight(Mn) [Mw/Mn ] of 1.2 to 4.0, and wherein a zero-shear melt viscosity &eegr;*0 (poise) and a characteristic relaxation time &tgr;0 (second) satisfy the relation of the expression (1) below; log &tgr;0>log &eegr;*0−6.38 (1)
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