发明授权
- 专利标题： Styrene copolymer and process for production thereof
- 专利标题（中）： 苯乙烯共聚物及其制备方法
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申请号： US598637申请日： 1990-10-19
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公开(公告)号： US5262504A公开(公告)日： 1993-11-16
- 发明人: Toshinori Tazaki , Masahiko Kuramoto
- 申请人： Toshinori Tazaki , Masahiko Kuramoto
- 申请人地址： JPX Tokyo
- 专利权人： Idemitsu Kosan Co., Ltd.
- 当前专利权人： Idemitsu Kosan Co., Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX1-78167 19890331; JPX1-78168 19890331; JPX1-78169 19890331
- 主分类号： C08F212/04
- IPC分类号： C08F212/04 ; C08F212/10 ; C08F212/08
摘要：
A styrene copolymer which comprises a styrene repeating unit (a) represented by the general formula (I): ##STR1## and an acrylonitrile repeating unit (b) represented by the general formula (II-(b)): ##STR2## an unsaturated carboxylic acid or its ester repeating unit (c) represented by the general formula (II-(c)): ##STR3## or a maleimide or N-substituted maleimide (d) represented by the general formula (II-(d)): ##STR4## (in the formula, symbols are the same as defined in the specification) wherein stereoregularity of the styrene repeating unit (a) chain is a high degree of syndiotactic configuration is disclosed.
公开/授权文献
- US5650944A Shutter speed control method and system 公开/授权日：1997-07-22
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