Catalytic titanium component, process for the manufacture...

Details Catalytic titanium component, process for the manufacture... Catalytic titanium component, process for the manufacture...

C - Chemistry, Metallurgy

08

F

252/109, 400/307

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

Patent

CA 1156800

A B S T R A C T The invention relates to a catalytic titanium component useful for the polymerization of alkenes-1 and for the copolymerization of alkenes-1 with each other or with ethylene, containing a halogenated titanium compound, an electron donor, and a metal halide obtained by conversion of an organic metal compound with a halogenating agent of the formula RXm, wherein R is a hydrocarbon group, ? hydrogen atom or a halogen atom, X is a halogen atom, and m is a whole number from 1-10, The catalytic titanium component according to the invention is characterized in that the metal halide has been obtained by conversion of a combination of an organic aluminium compound and an organic magnesium compound with the halogenating agent into the corresponding metal halide, for instance by means of a reaction with hydrogen chloride or an alkyl chloride. The titanium component according to the invention considerably improves the activity and the stereospecificity of a catalyst system for the polymerization of alkenes-1, in particular propylene, and moreover a much purer polymer can be obtained.

348650

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