Ethylene polymerization catalyst

Details Ethylene polymerization catalyst Ethylene polymerization catalyst

C - Chemistry, Metallurgy

08

F

252/109, 402/423

C08F 10/00 (2006.01) C08F 4/62 (2006.01)

Patent

CA 1249574

ABSTRACT OF THE DISCLOSURE An olefin polymerization catalyst system comprising (I) a polymerization catalyst produced by treating an inert support material, preferably a hydrated high surface area silica support having 1.00 to 1.50 hydroxyls per gram of silica with the reaction product of an organomagnesium compound and first a zirconium compound and/or a hafnium compound then a halogenator and tetravalent titanium compound, (II) an organoaluminum compound cocatalyst and (III) a chlorinated hydrocarbon promoter which produces polymers having broad molecular weight distribution in high yields.

487913

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