Process for preparing polyolefins

Details Process for preparing polyolefins Process for preparing polyolefins

C - Chemistry, Metallurgy

08

F

402/629, 402/630

C08F 10/02 (2006.01) C08F 10/00 (2006.01) C08F 10/04 (2006.01) C08F 10/14 (2006.01)

Patent

CA 1219996

ABSTRACT At least one olefin is polymerized using a catalyst which consists essentially of: [I] a solid catalyst component obtained by contacting and reacting the following components (1) - (4) with one another: (1) a silicon oxide and/or an aluminum oxide, (2) a reaction product resulting from the reac- tion of a magnesium halide and a compound represented by the general formula Me(OR)nXz-n wherein Me is an element selected from Groups I through VIII of the Periodic Table, provided silicon, titanium and vanadium are excluded, R is a hydrocarbon radical having 1 to 24 carbon atoms, X is a halogen atom, z is the valence of Me and n is 0 < n ? z, (3) a compound represented by the general formula Image wherein R1, R2 and R3 are each a hydrocarbon radical having 1 to 24 carbon atoms, an alkoxy group, hydrogen or a halogen atom, R4 is a hydrocarbon radical having 1 to 24 carbon atoms and n is 1 ? n ? 30, and (4) a titanium compound and/or a vanadium compound; [II] a compound represented by the general formula Image wherein R1, R2 and R3 are each a hydrocarbon radical having 1 to 24 carbon atoms, an alkoxy group, hydrogen or a halogen atom R4 is a hydrocarbon radical having 1 to 24 carbon atoms and n is 1 ? n ? 30; and [III] an organometallic compound.

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