发明申请
- 专利标题： PROCESS FOR POLYMERIZING OLEFINS IN THE PRESENCE OF AN OLEFIN POLYMERIZATION CATALYST
- 专利标题（中）： 在烯烃聚合催化剂存在下聚合烯烃的方法
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申请号： US12065101申请日： 2006-08-08
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公开(公告)号： US20090137753A1公开(公告)日： 2009-05-28
- 发明人: Henrik Andtsjö , Michiel Bergstra , Ralf Karlsson , Klaus Nyfors , Urban Thorngren
- 申请人： Henrik Andtsjö , Michiel Bergstra , Ralf Karlsson , Klaus Nyfors , Urban Thorngren
- 申请人地址： FI Porvoo
- 专利权人： BOREALIS TECHNOLOGY OY
- 当前专利权人： BOREALIS TECHNOLOGY OY
- 当前专利权人地址： FI Porvoo
- 优先权： CN200510099673.8 20050902
- 国际申请： PCT/EP2006/007854 WO 20060808
- 主分类号： C08F2/01
- IPC分类号： C08F2/01
摘要：
The present invention relates to a process for the preparation of multimodal ethylene homo- or copolymers in at least two stages, the process comprising preparation of a first ethylene homo- or copolymer fraction in a loop reactor in slurry phase, preparation of a second ethylene homo- or copolymer fraction in a gas phase reactor, by using a catalyst not containing an inorganic oxide support, and operating the gas phase reactor in such conditions that at least part of the gas is recycled, and that at least a part of the recycled gas is condensed and the (partially) condensed gas is re-introduced into the gas phase reactor.
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