Catalyst composition and process for polymerizing polymers...

Details Catalyst composition and process for polymerizing polymers... Catalyst composition and process for polymerizing polymers...

C - Chemistry, Metallurgy

08

F

C08F 4/16 (2006.01) C08F 2/34 (2006.01) C08F 4/24 (2006.01) C08F 4/602 (2006.01)

Patent

CA 2042961

There is disclosed a supported olefin polymerization catalyst composition comprising a precursor and a catalyst activator. The precursor comprises a magnesium compound e.g., dibutylmagnesium, a cyclopentadienyl group - containing zirconium compound, and a titanic and/or a vanadium compound e.g., TiCl4, and an organic compound, e.g., an alcohol. The catalyst activator is a mixture of a conventional Ziegler/Natta co-catalyst and a zirconium sites activator, e.g., methylaluminumoxane. The catalyst is used in the preserve of small amounts of hydrogen to produce polymers having multimodal molecular weight distribution in a single reactor.

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