发明名称 |
Gas phase olefin polymerization process |
摘要 |
The present invention relates to an alpha-olefin prepolymer catalytically active in an alpha-olefin (co-)polymerization comprising a transition metal, an organometallic compound and an antistatic agent. The prepolymer can be prepared by contacting the antistatic agent with a catalyst comprising the transition metal and the organometallic compound before or during an alpha-olefin prepolymerization. It can also be prepared by contacting the antistatic agent with an alpha-olefin prepolymer after a prepolymerization. It can also be prepared by a combination of the two methods. The prepolymer can be introduced into a gas phase (co-)polymerization medium for preparing polyolefin directly in a dry powder form, with a reduced amount of sheeting and agglomerates.
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申请公布号 |
US5283278(A) |
申请公布日期 |
1994.02.01 |
申请号 |
US19910681884 |
申请日期 |
1991.04.08 |
申请人 |
BP CHEMICALS LIMITED |
发明人 |
DAIRE, ERICK;SPEAKMAN, JOHN G. |
分类号 |
C08F4/635;C08F2/34;C08F2/44;C08F4/60;C08F4/631;C08F4/632;C08F4/639;C08F4/642;C08F10/00;C08F10/02;(IPC1-7):C08K5/09 |
主分类号 |
C08F4/635 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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