发明授权
- 专利标题: Preparation of propylene copolymer with dynamically operated reactor
- 专利标题(中): 用动态反应器制备丙烯共聚物
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申请号: US12998307申请日: 2009-10-06
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公开(公告)号: US09079988B2公开(公告)日: 2015-07-14
- 发明人: Michiel Bergstra , John Severn , Torvald Vestberg , Pauli Leskinen , Bo Malm , Olli Tuominen , Pirjo Jääskeläinen
- 申请人: Michiel Bergstra , John Severn , Torvald Vestberg , Pauli Leskinen , Bo Malm , Olli Tuominen , Pirjo Jääskeläinen
- 申请人地址: AT Vienna
- 专利权人: Borealis AG
- 当前专利权人: Borealis AG
- 当前专利权人地址: AT Vienna
- 代理机构: Warn Partners, P.C.
- 优先权: EP08017631 20081008
- 国际申请: PCT/EP2009/062944 WO 20091006
- 国际公布: WO2010/040731 WO 20100415
- 主分类号: C08F2/38
- IPC分类号: C08F2/38 ; C08F2/00 ; C08F4/64 ; C08F210/06 ; C08F210/16
摘要:
The present invention relates to a process for the preparation of a propylene copolymer P1 having ethylene-derived comonomer units, which comprises the following steps: (i) introducing propylene, ethylene, and hydrogen into a polymerisation reactor R1, wherein the ethylene is fed to the polymerisation reactor R1 in a periodically varying amount, (ii) preparing the propylene copolymer in the polymerisation reactor R1 in the presence of a catalyst.
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