Process for producing olefin copolymer rubber

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

1982-09-24

1985-03-19

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C08F 464

Patent

active

045060614

ABSTRACT:
A process for producing an olefin copolymer 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) 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 represented by the general formula R.sup.1 OR.sup.2 wherein R.sup.1 and R.sup.2 are identical or different and each represents a hydrocarbon group having 2 to 12 carbon atoms, and (B) an organoaluminum compound.

REFERENCES:
patent: 4321346 (1982-03-01), Ueno et al.
patent: 4366297 (1982-12-01), Makino et al.
patent: 4377671 (1983-03-01), Makino et al.

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