发明名称 |
Process for producing polyolefins and polyolefin catalyst |
摘要 |
The present invention provides a process for preparing polyolefins having a multimodal or at least bimodal molecular weight distribution by contacting in a reaction mixture under polymerization conditions at least one olefin and a catalyst system comprising a supported catalyst-component comprising an alumoxane and at least two metallocenes containing the same transition metal and selected from mono, di, and tri-cyclopentadienyls and substituted cyclopentadienyls of a transition metal and wherein at least one of the metallocenes is bridged and at least one of the metallocenes is unbridged.
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申请公布号 |
US5719241(A) |
申请公布日期 |
1998.02.17 |
申请号 |
US19940224604 |
申请日期 |
1994.04.07 |
申请人 |
FINA RESEARCH, S.A. |
发明人 |
RAZAVI, ABBAS;DEBRAS, GUY L.G. |
分类号 |
C08F4/642;C08F4/60;C08F4/602;C08F4/639;C08F4/6392;C08F4/64;C08F4/6592;C08F10/00;C08F110/02;C08F210/16;(IPC1-7):C08F4/64 |
主分类号 |
C08F4/642 |
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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