发明授权
- 专利标题： Cycloolefin copolymers and uses thereof
- 专利标题（中）： 环烯烃共聚物及其用途
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申请号： US59558申请日： 1998-04-14
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公开(公告)号： US6063886A公开(公告)日： 2000-05-16
- 发明人: Masayoshi Yamaguchi , Kazuyuki Takimoto
- 申请人： Masayoshi Yamaguchi , Kazuyuki Takimoto
- 申请人地址： JPX Tokyo DEX Frankfurt am Main
- 专利权人： Mitsui Chemicals,Hoechst Aktiengesellschaft
- 当前专利权人： Mitsui Chemicals,Hoechst Aktiengesellschaft
- 当前专利权人地址： JPX Tokyo DEX Frankfurt am Main
- 优先权： JPX9-095749 19970414
- 主分类号： G02C7/02
- IPC分类号： G02C7/02 ; C08F4/659 ; C08F10/02 ; C08F210/00 ; C08F210/02 ; C08F232/08 ; C08G61/08 ; G02B1/04 ; G02B6/00 ; C08F232/04
摘要：
Disclosed is a cycloolefin copolymer which is obtained from (A) a straight-chain or branched .alpha.-olefin of 2 to 20 carbon atoms, (B) a specific cycloolefin and (C) an aromatic vinyl compound and has an intrinsic viscosity [.eta.] of 0.1 to 10 dl/g, wherein the content of constituent units derived from the cycloolefin (B) and the content of constituent units derived from the aromatic vinyl compound (C) satisfy a specific relation. The cycloolefin copolymer has high heat resistance, low moisture absorption and small birefringence.
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