C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/641, 252/52.
C08F 4/64 (2006.01) C08F 4/02 (2006.01) C08F 10/00 (2006.01)
Patent
CA 1081201
Abstract of the Disclosure The invention is a process for polymerizing or copolymerizing .alpha.-olefins having at least 3 carbon atoms or copolymerizing .alpha.-olefins having at least 3 carbon atoms with not more than 50 mole % of ethylene in the presence of a catalyst composed of an organometallic compound of a metal of Groups I to III of the periodic table and a titanium catalyst component supported on a halogen-containing magnesium compound, said titanium catalyst component being a solid reaction product obtained by treating (i) a mechani- cally copulverized product of a halogen-containing compound and an organic acid ester with (ii) an organometallic compound of a metal of Groups I to III of the periodic table, and then reacting the resulting solid product with (iii) a titanium compound in the absence of mechanical pulverization. The process provides highly stereoregular polymers or copolymers of the .alpha.-olefins in high yields. The invention also provides a catalyst for the polymerization or copolymerization of .alpha.-olefins having at least 3 carbon atoms and not more than 5 mole % ethylene.
267492
Kashiwa Norio
Minami Syuji
Odawara Kiyoshi
Toyota Akinori
Ushida Yoshihisa
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