Catalyst system for polymerization of olefins and process...

Details Catalyst system for polymerization of olefins and process... Catalyst system for polymerization of olefins and process...

C - Chemistry, Metallurgy

08

F

402/418, 402/636

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

Patent

CA 1148526

Abstract: The invention concerns a catalyst system useful for the polymerization of olefins which comprises (A) at least one organometallic compound of a typical metal belonging to group I, II and III of the Periodic table, (B) a reaction product of (1) a solid organo-magnesium compound of the formula: MgR1X2-t? D wherein R is a hydrocarbon group having 1 to 20 carbon atoms, X is a halogen atom, D is a Lewis base, 1 is a number in the range of 0 < ? < 2 and n is a number in the range of 0 ? ?<1.5, (ii) a phenol compound, (iii) a Lewis base, and (iv) a titanium compound and/or vanadium compound, and optionally (c) a Lewis base in an amount of up to 1 mole to 1 mole of the component (A), The invention also concerns a process for homo- or copolymerization of olefins by using the catalyst system. The catalyst system of the present invention shows excellent activities not only per the transition metal compound but also per the solid catalyst and can give polyolefins having a high-stereo-regularity.

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