Catalysts for the polymerization of olefins

Details Catalysts for the polymerization of olefins Catalysts for the polymerization of olefins

C - Chemistry, Metallurgy

08

F

402/418, 402/584

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

Patent

CA 1104298

ABSTRACT OF THE DISCLOSURE A process r producing highly stereoregular .alpha.-olefin polymers comprising polymerising an .alpha.-olefin with a catalyst system comprising three components A, B and C: A: a solid catalyst produced as follows: (1) an organo-magnesium compound is reacted with at least one halogen-containing compound of (a) and (b), (a) halogeno-silicon compounds of the formula, R?SiX4-n wherein R1 is a C1-C8 alkyl, aryl or alkenyl group, X is a halogen atom and n is a number satisfying 0 ? n < 4, (b) halogeno-aluminum compounds of the formula, R?AlX3-? wherein R2 is a C1-C8 alkyl, aryl alkenyl group, X is a halogen atom and ? is a number satisfying 0 ? ? < 3, at 0° to 100°C in the former to the latter molar ratio of 1 : 10 to 10 : 1, and the resulting solid product is separated from the reaction system and washed with an inert hydrocarbon solvent, (2) the solid product is reacted, at -50° to 150°C, with an electron donor of 10 5 to 0.1 mole per gram Or solid product, selected from the group consisting Or amines, amides, ethers, esters, alcohols, phenols, ketones, nitriles, phosphines, phosphites, sulfides and lactones, and the resulting solid carrier is separated from the reaction system and washed with an inert hydrocarbon solvent, and (3) the solid carrier is reacted with titanium tetrachloride of 0.01 to 10 moles per gram of solid carrier at 0° to 150°C, and the resulting solid catalyst is separated from the reaction system and washed with an inert hydrocarbon solvent, B: an activating agent of the formula, R?AlY3-m wherein R3 is a C1-C8 alkyl, aryl or alkenyl group, Y is a halogen or hydrogen atom and m is a number satisfying 2 ? m ? 3, and C: an electron donor selected from the group consisting of amines, amides, ethers, esters, alcohols, phenols, ketones, phosphines, phosphites, sulrides, and lactones.

321159

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