Exhaustively prepolymerized supported .alpha.-olefin...

Details Exhaustively prepolymerized supported .alpha.-olefin... Exhaustively prepolymerized supported .alpha.-olefin...

C - Chemistry, Metallurgy

08

F

252/109

C08F 4/64 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1263371

Abstract of the Disclosure An exhaustively prepolymerized supported olefin polymerization catalyst component comprises solid, hydro- carbon-insoluble, magnesium-containing, titanium-con- taining catalyst particles which have been contacted with an olefin monomer and an organo-aluminum co-catalyst under exhaustive prepolymerization conditions at an Al/Ti atomic ratio such that the weight of prepolymer formed is less than 10 times the weight of such catalyst particles and the resulting prepolymerized catalyst particles essentially are inactive to further polymerization.

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