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公开(公告)号:US5719241A
公开(公告)日:1998-02-17
申请号:US224604
申请日:1994-04-07
申请人: Abbas Razavi , Guy L.G. Debras
发明人: Abbas Razavi , Guy L.G. Debras
IPC分类号: C08F4/642 , C08F4/60 , C08F4/602 , C08F4/639 , C08F4/6392 , C08F4/64 , C08F4/6592 , C08F10/00 , C08F110/02 , C08F210/16
CPC分类号: C08F210/16 , C08F10/00 , C08F110/02 , C08F4/63904 , C08F4/63912 , C08F4/63916 , C08F4/63922 , Y10S526/905 , Y10S526/943
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.
摘要翻译: 本发明提供了一种制备具有多峰或至少双峰分子量分布的聚烯烃的方法,所述聚烯烃在聚合条件下在反应混合物中接触至少一种烯烃和催化剂体系,所述催化剂体系包含负载型催化剂组分,其包含铝氧烷和至少两种金属茂 含有相同的过渡金属并选自过渡金属的单,二和三环戊二烯基和取代的环戊二烯基,并且其中至少一个金属茂被桥接并且至少一个金属茂是未桥接的。