Process for the preparation of polyolefins
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United States of America Patent
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Nov 21, 2000
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N/A
app pub date -
Aug 26, 1997
filing date -
Sep 29, 1993
priority date (Note) -
Expired
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Abstract
Polyolefins with a molecular weight distribution M.sub.w /M.sub.n .gtoreq.3.0, which may be monomodal, bimodal or multimodal, can be obtained by polymerization or copolymerization of olefins with a catalyst system consisting of an aluminoxane and a transition metal component (metallocene), in which the transition metal component consists of at least one zirconocene of the formula I and at least one zirconocene of the formula Ia ##STR1## or alternatively of at least 2 zirconocenes of the formula I.
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