High efficiency catalyst for polymerizing olefins

Details High efficiency catalyst for polymerizing olefins High efficiency catalyst for polymerizing olefins

C - Chemistry, Metallurgy

08

F

402/554, 402/629

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

Patent

CA 1132125

Abstract Catalyst compositions exhibiting high activity for the polymerization of a-olefins are prepared by reacting (A) tetravalent or trivalent titanium compounds such as a titanium tetraalkoxide, (B) an anhydrous nickel compound such as nickel chloride, (C) an organomagnesium component such as a hydrocarbon soluble complex of dialkyl magnesium and an alkyl aluminum, (D) a halide source such as a hydrogen halide or an alkyl aluminum halide. and (E) an alkyl aluminum halide if not othewise provided. Polymerization processes employing this catalyst composition do not require subsequent catalyst removal steps and the resulting polymers base broader molecular weight distributions than do corresponding polymers prepared without the added anhydrous nickel compound.

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