Process for producing olefin polymers or copolymers and...

Details Process for producing olefin polymers or copolymers and... Process for producing olefin polymers or copolymers and...

C - Chemistry, Metallurgy

08

F

252/52.G

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

Patent

CA 1139737

ABSTRACT OF THE DISCLOSURE In a process for producing an olefin polymer or copolymer by polymerizing an alpha-olefin having at least 3 carbon atoms or copolymerizing such alpha-olefins with each other or such an alpha-olefin with up to 20 mol % of ethylene and/or a diene in the presence of a catalyst comprising (1) a solid titanium catalyst component having magnesium, halogen, titanium, phosphorus and a carboxylic acid ester and (2) and organometallic compound of a metal of Groups I to III of the Mendelejeff's periodic table; the improvement wherein said catalyst is composed of (A) the solid titanium catalyst component (1) in which the molar ratio of the phosphorus to the carboxylic acid ester is from about 0.05 to about 2 and which has a speci- fic surface area of not less than about 40 m2/g, (B) the organometallic compound (2), and (C) an electron donor; and a catalyst used for aforsesaid process.

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