Catalyst composition for copolymerizing ethylene

Details Catalyst composition for copolymerizing ethylene Catalyst composition for copolymerizing ethylene

C - Chemistry, Metallurgy

08

F

402/584, 402/613

C08F 2/34 (2006.01) C08F 10/02 (2006.01) C08F 210/16 (2006.01) C08F 110/02 (2006.01)

Patent

CA 1191999

ABSTRACT OF THE DISCLOSURE Ethylene copolymers having improved optical properties in film form are prepared by continuously co- polymerizing ethylene with one or more higher alpha olefin monomers in a low pressure gas phase reaction with a cata- lyst composition prepared by forming a precursor composition from a magnesium compound, titanium compound, and electron donor compound; diluting said precursor composition with an inert carrier material; optionally partially activating the diluted precursor composition with an organo aluminum compound prior to introducing said diluted precursor com- position into the polymerization reactor; and completely activating the diluted (and optionally partially activated) precursor composition in the polymerization reactor with a mixture of a dihydrocarbyl aluminum halide compound and a trihydrocarbyl aluminum compound.

407026

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