Catalyst composition for polymerizing alpha-olefin polymers...

Details Catalyst composition for polymerizing alpha-olefin polymers... Catalyst composition for polymerizing alpha-olefin polymers...

C - Chemistry, Metallurgy

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F

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C08F 4/615 (2006.01) C08F 4/605 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1332601

CATALYST COMPOSITION FOR POLYMERIZING ALPHA-OLEFIN POLYMERS OF NARROW MOLECULAR WEIGHT DISTRIBUTION ABSTRACT A supported alpha-olefin polymerization catalyst composition is synthesized by reacting (1) a slurry of a solid catalyst carrier in a non-polar solvent, e.g., hexane, with a dialkyl organomagnesium composition; (2) contacting the slurry of step (1) with a hydroxyl group-containing compound, e.g., an alcohol; (3) contacting the slurry of step (2) with at least one transition metal compound; (4) removing the non-polar solvent to obtain a dry-flowing powder; and, (5) activating the powder with trimethylaluminum. The resulting catalyst composition is extremely active in polymerizing C2-C10 alpha-olefins and exhibits very good higher (C3-C10) alpha-olefin incorporation properties.

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