Process for producing polyolefins and polyolefin catalyst
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United States of America Patent
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Apr 1, 2003
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N/A
app pub date -
Jun 2, 1995
filing date -
Apr 7, 1993
priority date (Note) -
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Abstract
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 polymeriation 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 the group consisting of 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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