Spray-dried, mixed metal ziegler catalyst compositions

C - Chemistry – Metallurgy – 08 – F

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C08F 10/00 (2006.01) C08F 4/653 (2006.01)

Patent

CA 2546275

A Ziegler-Natta catalyst composition comprising a solid mixture formed by halogenation of: A1) a spray-dried catalyst precursor comprising the reaction product of a magnesium compound, a non-metallocene titanium compound, and at least one non-metallocene compound of a transition metal other than titanium, with A2) an organoaluminium halide halogenating agent, a method of preparing, precursors for use therein, and olefin polymerization processes using the same.

L'invention porte sur la composition d'un catalyseur Ziegler-Natta consistant en mélange solide formé par halogénation: A1) un précurseur de catalyseur formé par atomisation/séchage comprenant le produit de réaction d'un composé de magnésium, et au moins un composé non métallocène de titane et au moins un composé non métallocène d'un métal de transition autre que le titane, avec A2) un agent halogénation d'un halogénure d'organoaluminium. L'invention porte également sur la préparation dudit précurseur et sur un procédé de polymérisation d'oléfines y recourant.

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