发明申请
- 专利标题: Olefin polymerization process
- 专利标题(中): 烯烃聚合工艺
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申请号: US10563497申请日: 2004-06-29
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公开(公告)号: US20060160962A1公开(公告)日: 2006-07-20
- 发明人: Maria Tonti , Markus Oberhoff , Volker Fraaije , Bernd Bachmann
- 申请人: Maria Tonti , Markus Oberhoff , Volker Fraaije , Bernd Bachmann
- 申请人地址: DE Wesseling 50389
- 专利权人: Basell Polyolefine GmbH
- 当前专利权人: Basell Polyolefine GmbH
- 当前专利权人地址: DE Wesseling 50389
- 优先权: EP03102001.9 20030704
- 国际申请: PCT/EP04/07061 WO 20040629
- 主分类号: C08F2/00
- IPC分类号: C08F2/00
摘要:
A process for polymerizing one or more alpha-olefins of formula CH2═CHT wherein T is a hydrogen atom or a C1-C20 alkyl radical comprising the following steps: a) contacting in a continuous way one or more of said alpha olefins with a metallocene based catalyst system in a loop reactor, wherein: (i) the reaction is carried out in a liquid medium; (ii) the average residence time of the metallocene-based catalyst system is not more than 30 minutes; (iii) the temperature of the loop ranges from 25° to 70° C.; in to obtain a polymerization degree ranging from 60 to 500 g per gram of catalyst system; b) feeding in continuous the prepolymerized metallocene-based catalyst system obtained in step a) into a polymerization reactor C) polymerizing one or more alpha-olefins, the same or different from the alpha olefins used in step a), in the presence of said prepolymerized metallocene-based catalyst system.
公开/授权文献
- US07122606B2 Olefin polymerization process 公开/授权日:2006-10-17