发明公开
- 专利标题： Chromium-containing complex polymerisation catalyst
- 专利标题（中）： 含铬复合聚合催化剂
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申请号： EP90309280.7申请日： 1990-08-23
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公开(公告)号： EP0416784A3公开(公告)日： 1991-10-02
- 发明人: Dawkins, Gordon Michael
- 申请人： BP Chemicals Limited
- 申请人地址： Britannic House 1 Finsbury Circus London EC2M 7BA GB
- 专利权人： BP Chemicals Limited
- 当前专利权人： BP Chemicals Limited
- 当前专利权人地址： Britannic House 1 Finsbury Circus London EC2M 7BA GB
- 代理机构： Denbigh, Keith Warwick
- 优先权： GB8919925 19890904
- 主分类号： C08F10/00
- IPC分类号： C08F10/00 ; C08F4/78
摘要：
The present invention relates to an olefin polymerization catalyst obtainable by depositing on a dry inorganic oxide support a monocuclear chromium complex to produce a catalyst precursor and thereafter by thermally activating the said catalyst precursor. The catalyst is characterised in that the mononuclear chromium complex is representable by the general formula:
wherein:
- the cyclopentadienyl ligand is substituted with 4 or 5 hydrocarbon groups containing 1 to 3 carbon atoms,
- x is an integer from 1 to 4, and
- L is either a four-or five-substituted cyclopentadienyl ligand, or (CO)₃R in which R is H, methyl or ethyl. The catalyst is used for polymerizing olefins, particularly ethylene optionally with C₃-C₈ alpha-olefins. It produces polyolefins having a relatively high molecular weight and a broad molecular weight distribution.
wherein:
- the cyclopentadienyl ligand is substituted with 4 or 5 hydrocarbon groups containing 1 to 3 carbon atoms,
- x is an integer from 1 to 4, and
- L is either a four-or five-substituted cyclopentadienyl ligand, or (CO)₃R in which R is H, methyl or ethyl. The catalyst is used for polymerizing olefins, particularly ethylene optionally with C₃-C₈ alpha-olefins. It produces polyolefins having a relatively high molecular weight and a broad molecular weight distribution.
公开/授权文献
- EP0416784A2 Chromium-containing complex polymerisation catalyst 公开/授权日：1991-03-13
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