Process for producing olefin copolymer rubber

Details Process for producing olefin copolymer rubber Process for producing olefin copolymer rubber

C - Chemistry, Metallurgy

08

F

402/419, 402/645

C08F 236/20 (2006.01) C08F 210/16 (2006.01)

Patent

CA 1223695

ABSTRACT The present invention provides a process for producing an olefin co- polymer rubber containing 25 to 75% by weight of propylene, which comprises polymerizing ethylene and propylene, or ethylene, propylene and at least one nonconjugated diene, in solution in the presence of a catalyst, said catalyst being composed of a Ti-containing solid component precipitated from a liquid product obtained by reacting a titanium tetrahalide with an organomagnesium compound in a halogenated hydrocarbon solvent in the presence of an ether re- presented by the general formula R1OR2 wherein R1 and R2 are identical or different and each represents a hydrocarbon group having 2 to 12 carbon atoms, and an organoaluminum compound. The ethylene-propylene copolymer rubber produced by the process of the invention is produced in good yields and exhibits good processability, high tensile strength and a high degree of randomness.

418515

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