04975403 is referenced by 90 patents and cites 14 patents.

The invention provides catalyst systems for use in the polymerization of olefins to produce a polymer product having a broad molecular weight distribution. The catalyst system includes at least two different chiral, stereo-rigid metallocene catalysts of the formula R"(C.sub.5 (R').sub.4).sub.2 MeQp and an aluminum compound, preferably an alumoxane. These catalyst systems are especially useful in the polymerization of propylene.

Title
Catalyst systems for producing polyolefins having a broad molecular weight distribution
Application Number
95755
Publication Number
4975403
Application Date
December 2, 1988
Publication Date
December 4, 1990
Inventor
John A Ewen
Houston
TX, US
Agent
M Norwood Cheairs
John K Abokhair
Jim D Wheelington
Assignee
Fina Technology
TX, US
IPC
C08F 4/646
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