Catalyst composition and process for olefin polymerization...

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing

Reexamination Certificate

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C502S104000, C502S103000, C502S115000, C526S348000, C526S160000, C526S943000

Reexamination Certificate

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07094726

ABSTRACT:
A catalyst composition includes: A) a solid catalyst precursor containing a metallocene compound, a magnesium compound and a particulate polymeric material; and B) a cocatalyst containing aluminum compound. The catalyst is prepared by combining metallocene compound, magnesium compound and particles of polymeric material to form a catalyst precursor; and activating the catalyst precursor with alkylaluminums and/or aluminoxanes. Homopolymeric or copolymeric polyolefins are produced by contacting olefins or olefins and alpha-olefins with the catalyst composition.

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Database WPI, Derwent Publications Ltd., WO 9837108, Aug. 27, 1998, Buna Sow Leuna Olefinverbund GmbH.

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