Ethylene-.alpha.-olefin-polyene rubbery terpolymer and process f

Details Ethylene-.alpha.-olefin-polyene rubbery terpolymer and process f Ethylene-.alpha.-olefin-polyene rubbery terpolymer and process f

1979-08-07

1981-03-31

Levin, Stanford M.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

260 336PQ, 525332, 525333, 526169, 526282, 526336, C08F21018

Patent

active

042594685

ABSTRACT:
A rubbery copolymer of ethylene, an .alpha.-olefin having 3 to 10 carbon atoms and a polyene, characterized by having (A) an ethylene/.alpha.-olefin mole ratio of from 50/50 to 95/5, (B) an iodine value of from 5 to 50, (C) an intrinsic viscosity [.eta.], measured in decaline at 135.degree. C., of from 1.0 to 6.0 dl/g, (D) a weight average molecular weight
umber average molecular weight ratio (Mw/Mn) of from 3 to 15, and (E) an iodine value index .alpha..sub.1 for the lower molecular weight components and an iodine value index .alpha..sub.2 for the higher molecular weight components, said .alpha..sub.1 and .alpha..sub.2 falling within the ranges -30.ltoreq..alpha..sub.1 .ltoreq.0 and 0<.alpha..sub.2 .ltoreq.30. Said copolymer can be obtained by copolymerizing ethylene, the .alpha.-olefin having 3 to 10 carbon atoms and polyene at a temperature of from about 40.degree. C. to about 100.degree. C. in the presence of a catalyst composed of (a) a vanadium compound of the formula VO(OR).sub.n X.sub.3-n in which R represents a hydrocarbon group, X represents a halogen atom, and n is a positive number within the range of 0<n.ltoreq.3, and (b) an organoaluminum compound of the formula R'.sub.m AlX'.sub.3-m in which R' represents a hydrocarbon group, X' represents a halogen atom, and m is a positive number within the range of 1<m.ltoreq.1.25, the Al/V mole ratio being 2 to less than 5.

REFERENCES:
patent: 3645992 (1972-02-01), Elston
patent: 3674755 (1972-07-01), Yamamoto et al.
patent: 4078131 (1978-03-01), Zarauz
patent: 4125699 (1978-11-01), Yamamoto et al.
Abstract Jap. Patent Pub. No. 40-14542 (11-70).
Abstract Japanese Laid-Open Patent Pub. No. 52-141887 (5-76).

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