Process for preparing polyolefins

Details Process for preparing polyolefins Process for preparing polyolefins

C - Chemistry, Metallurgy

08

F

402/418, 402/431

C08F 2/34 (2006.01) C08F 4/62 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1185748

ABSTRACT Olefins are polymerized in the presence of a catalyst which comprises the combination of: [I] a solid substance obtained by the reaction of at least the following two components: (i) a magnesium compound represented by the general formula R1m(OR2)nMgX2-m-n wherein R1 and R2 are each a hydrocarbon radical having 1 to 24 carbon atoms, X is a halogen atom, n is 0 ? m ? 2 and n is 0 ? n ? 2, provided 0 ? m+n ? 2, and (ii) a titanium compound and/or a vanadium compound; [II] a silicon compound represented by the general formula Image wherein R3, R4 and R5 are each a hydrocarbon radical having 1 to 24 carbon atoms, alkoxy, hydrogen, or halogen, R6 is a hydrocarbon radical having 1 to 24 carbon atoms and q is 1 ? q ? 30; and [III] an organometallic compound.

411443

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