Process for preparing polyolefins

Details Process for preparing polyolefins Process for preparing polyolefins

C - Chemistry, Metallurgy

08

F

402/584, 402/626

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

Patent

CA 1208400

ABSTRACT An olefin polymerization is carried out by using a catalyst obtained from the following components [I], [II] and [III]: [I] a solid substance obtained by the reaction of the following (i) through (iv): (i) a magnesium halide, (ii) 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, (iii) a compound represented by the formula R'mSi(OR")nX4-m-n wherein R' and R" are each a hydrocarbon radical having 1 to 24 carbon atoms, X is a halogen atom, m and n are 0 ? m < 4 and 0 < n ? 4, provided 0 < m + n ? 4, and (iv) 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, alkoxy, hydrogen or halogen, R4 is a hydrocarbon radical having 1 to 24 carbon atoms and q is 1 ? q ? 30; and [III] an organometallic compound.

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