Process for preparing polyolefins

Details Process for preparing polyolefins Process for preparing polyolefins

C - Chemistry, Metallurgy

08

F

402/629, 402/630

C08F 4/44 (2006.01) C08F 10/00 (2006.01)

Patent

CA 1222096

ABSTRACT Provided is an olefin-polymerization catalyst comprising the combination of the following components (I) and (II): (I) a solid component obtained by intercontacting and reacting the following components (1) through (4): (1) a compound obtained by treating an oxide of an element of Groups II-IV in the Periodic Table with a compound represented by the general formula R1mSi(OR2) nX4-m-n wherein R1 and R2 are each a hydrocarbon radical having 1 to 24 carbon atoms, a hydrocarbon radical containing oxygen, sulfur or nitrogen, or hydrogen, X is a halogen atom, m is 0 < m < 4 and n is 0 < n < 4, provided 0 - m + n < 4, (2) a reaction product obtained by the reaction of a magnesium halide and a compound represented by the general formula Me(OR3)nXz-n wherein Mc is an element of Groups I-VIII in the Periodic Table, with the limitation that silicon, titanium and vanadium are excluded, R3 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 are each a hydrocarbon radical having 1 to 24 carbon atoms, an alkoxyl group, hydrogen, or a halogen atom, R7 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; and (II) an organometallic compound.

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