Process for producing an olefin copolymer rubber

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

1986-04-07

1987-09-22

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502125, 502127, 526132, 526143, 526282, 526283, C08F 468, C08F23620

Patent

active

046956140

ABSTRACT:
A process for producing an olefin copolymer rubber by slurry-polymerizing ethylene, at least one .alpha.-olefin and at least one non-conjugated diene in a poor solvent for the copolymer in the presence of a catalyst consisting of an organometallic compound (the first component) and a transition metal compound (the second component), characterized by using, an organoaluminum compound as the first component of the catalyst, and using, as the second component, a modified vanadium compound obtained by contacting a vanadium compound with at least one compound selected from the group consisting of the compounds represented by the following formulas: ##STR1## wherein R is a hydrocarbon group of 1 to 20 carbon atoms and X.sub.1, X.sub.2 and X.sub.3 are independently halogen atoms or alkoxyl groups. This process can prevent a gel from being formed during polymerization.

REFERENCES:
patent: 3260708 (1966-07-01), Natta et al.
patent: 3595842 (1971-07-01), Schrogi et al.
patent: 3600368 (1971-08-01), Schaum et al.
patent: 3880819 (1975-04-01), Natta et al.
patent: 3953410 (1976-04-01), Imai et al.

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