Process for preparing polyolefins

Details Process for preparing polyolefins Process for preparing polyolefins

C - Chemistry, Metallurgy

08

F

402/641

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

Patent

CA 1237247

ABSTRACT Provided is a process for preparing a polyolefin by polymerizing at least one olefin in the presence of a catalyst comprising a solid catalyst component and an organometallic compound, said solid catalyst component being a product obtained by intercontacting the following components (i)-(iv): (i) a silicon oxide and/or an aluminum oxide, (ii) a reaction product obtained by the reaction of a magnesium halide and a compound represented by the general formula Me(OR)nXz-n wherein Me is an element of Groups I-IV in the Periodic Table, z is the valence of the element Me, n is 0 < n ? z, X is a halogen atom and R is a hydrocarbon radical having 1 to 20 carbon atoms, (iii) a halogenated silicon compound, and (iv) a titanium compound and/or a vanadium compound.

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