发明名称 |
PROCESS FOR THE POLYMERISATION OF OLEFINS IN THE GAS PHASE |
摘要 |
A process for the polymerisation of olefins in the gas phase is carried out in the presence of a supported transition metal catalyst. The process involves a prepolymerisation step which may be performed in-situ and in particular the prepolymer may be prepared in the dry phase. The catalyst may for example comprise a constrained geometry transition metal complex supported on silica and used in the presence of an activator. The prepolymerisation step unables the activity of the catalyst to be improved.
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申请公布号 |
CA2294993(A1) |
申请公布日期 |
1999.01.07 |
申请号 |
CA19972294993 |
申请日期 |
1997.06.27 |
申请人 |
BP CHEMICALS LIMITED |
发明人 |
MADDOX, PETER JAMES;WILLIAMS, PETER SEFTON |
分类号 |
C08F2/34;C08F4/60;C08F4/607;C08F4/619;C08F4/6192;C08F4/649;C08F10/00;C08F10/02;C08F110/06;C08F210/16;(IPC1-7):C08F10/02 |
主分类号 |
C08F2/34 |
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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