发明授权
US5159025A Styrene-based copolymer and process for production thereof 失效
基于苯乙烯的共聚物及其生产方法

  • 专利标题: Styrene-based copolymer and process for production thereof
  • 专利标题(中): 基于苯乙烯的共聚物及其生产方法
  • 申请号: US364451
    申请日: 1989-06-12
  • 公开(公告)号: US5159025A
    公开(公告)日: 1992-10-27
  • 发明人: Eiichi Terada
  • 申请人: Eiichi Terada
  • 申请人地址: JPX Tokyo
  • 专利权人: Idemitsu Petrochemical Co., Ltd.
  • 当前专利权人: Idemitsu Petrochemical Co., Ltd.
  • 当前专利权人地址: JPX Tokyo
  • 优先权: JPX63-146811 19880616
  • 主分类号: C08F8/32
  • IPC分类号: C08F8/32
Styrene-based copolymer and process for production thereof
摘要:
A styrene-based copolymer comprising 74.3 to 98.7 mol % of the structural unit (I) represented by the general formula: ##STR1## 1.3 to 25.4 mol % of the structural unit (II) represented by the formula: ##STR2## and 10 to 7000 mol ppm of the structural unit (III) represented by the general formula: ##STR3## (wherein R.sup.1 to R.sup.3 are as defined in the appended claims), characterized by having toluene-insoluble content of not more than 0.5% by weight, is disclosed.Efficient processes for producing the above styrene-based copolymer are also disclosed.
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