Process for producing polymers or copolymers of olefins...

Details Process for producing polymers or copolymers of olefins... Process for producing polymers or copolymers of olefins...

C - Chemistry, Metallurgy

08

F

252/105, 402/419

C08F 4/64 (2006.01) C08F 10/00 (2006.01) C08F 10/04 (2006.01)

Patent

CA 1122196

Abstract of the Disclosure The invention is a process for polymerizing or copolymerizing a olefin containing at least 3 carbon atoms to obtain a highly stereoregular polymer or copolymer in high yields, in which accompanying formation of un- desirable very fine polymer particles is inhibited. Polymerization is carried out in the presence of a catalyst composed of (A) a magnesium-containing solid titanium catslyst component and (B) an organometallic compound of a metal of Groups I to III of the periodic table, wherein the solid titanium catalyst component (A) is a composition formed by contacting (i) a reaction product of an organic magnesium compound containing magnesium directly bonded to at least one carbon atom with an organic silicon containing compound selected from the group consisting of organic silanols containing at least one hydroxyl group directly bonded to silicon and organopolysiloxanes, (ii) an organic acid ester, and (iii) a titanium compound.

287482

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