Polymers of nonconjugated 1,4-dienes

Details Polymers of nonconjugated 1,4-dienes Polymers of nonconjugated 1,4-dienes

1974-11-11

1976-08-17

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526237, 526194, 526139, C08F21000, C08F21200

Patent

active

039753360

ABSTRACT:
This invention discloses homopolymers and interpolymers of nonconjugated diolefins defined by the formula: ##EQU1## where R.sub.1, R.sub.2 and R.sub.3 may be hydrogen, a lower alkyl group containing up to 4 carbon atoms or an aryl group and R.sub.4 may be a lower alkyl group containing up to 4 carbon atoms or an aryl group. It is also disclosed that these homopolymers and interpolymers can be prepared by solution polymerization employing cationic catalyst systems and also coordination catalyst systems. The polymers are either resinous or rubbery in nature.

REFERENCES:
patent: 3250753 (1966-05-01), Kottenhahn
patent: 3472830 (1969-10-01), Baxter et al.
patent: 3492281 (1970-01-01), Smith et al.
patent: 3658774 (1972-04-01), Liu
Marvel and Stille, J. Amer. Chem. Soc., 1958, 80, 1740-1744.

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