Catalyst composition for polymerizing olefins to polymers...

Details Catalyst composition for polymerizing olefins to polymers... Catalyst composition for polymerizing olefins to polymers...

C - Chemistry, Metallurgy

08

F

252/52.E

C08F 4/602 (2006.01) C08F 10/00 (2006.01)

Patent

CA 2033001

A supported olefin, e.g., 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 dimethylaluminum chloride. The resulting catalyst composition produces polymers having substantially better distribution of side chain branches on polymer molecules than polymers made with precursors activated with conventional activators, e.g., triethylaluminum.

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