C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
252/105, 402/641
C08F 4/76 (2006.01) C08F 10/00 (2006.01)
Patent
CA 1187865
ABSTRACT A process for producing olefin polymers or copolymers which comprises polymerizing olefins or copolymerizing olefins with each other or with dienes in the presence of a catalyst system composed of the following components (A), (B) and (C): (A) a solid titanium catalyst component containing magnesium, titanium, halogen and an ester selected from the group consisting of esters of polycarboxylic acids and esters of polyhydroxy compounds, said catalyst component being obtained by contacting a liquid hydrocarbon solution of (i) a magnesium compound with (ii) a titanium compound in the liquid state to form a solid product or first preparing a liquid hydrocarbon solution of the magnesium compound (i) and the titanium compound (ii) and then forming a solid product therefrom, said reaction of forming the solid product being carried out in the presence of (D) at least one electron donor selected form the group consisting of monocarboxylic acid esters, aliphatic carboxylic acids, carboxylic acid anhydrides, ketones, aliphatic ethers, aliphatic carbonates, alkoxy group-containing alcohols, aryloxy group-containing alcohols, organic silicon compounds having an Si-O-C bond and organic phosphorus compounds having a P-O-C bond, and during or after the formation of the solid product, contacting the solid product with (E) and ester selected from the group consisting of esters of polycarboxylic acids and esters of polyhydroxy compounds, (B) and organometallic compound of a metal selected from the group consisting of metals of Groups I to III of the periodic table, and (C) and organic silicon compound having an Si-O-C bond or Si-N-C bond; and a solid titanium catalyst component used therefor.
415395
Kashiwa Norio
Kioka Mamoru
Mitsui Chemicals Inc.
Smart & Biggar
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