发明授权
- 专利标题： Alpha-olefin block copolymer particles and process for the production thereof
- 专利标题（中）： α-烯烃嵌段共聚物颗粒及其制备方法
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申请号： US866369申请日： 1986-05-23
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公开(公告)号： US4820775A公开(公告)日： 1989-04-11
- 发明人: Akinobu Shiga , Masahiro Kakugo , Hajime Sadatoshi , Hiroyuki Kora , Toshio Sasaki , Junpei Kojima , Kazuki Wakamatsu , Syozo Kawamata
- 申请人： Akinobu Shiga , Masahiro Kakugo , Hajime Sadatoshi , Hiroyuki Kora , Toshio Sasaki , Junpei Kojima , Kazuki Wakamatsu , Syozo Kawamata
- 申请人地址： JPX Osaka
- 专利权人： Sumitomo Chemical Company Limited
- 当前专利权人： Sumitomo Chemical Company Limited
- 当前专利权人地址： JPX Osaka
- 优先权： JPX60-110977 19850523
- 主分类号： C08F297/00
- IPC分类号： C08F297/00 ; C08F4/16 ; C08F4/52 ; C08F297/08
摘要：
A process for the production of .alpha.-olefin block copolymer particles having excellent impact resistance at low temperature and excellent molding and processing characteristics, is disclosed. The process includes a two step gas phase polymerization procedure under specific conditions in the presence of a specific catalyst system.
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