Butadiene polymerization catalyst

Details Butadiene polymerization catalyst Butadiene polymerization catalyst

1975-01-02

1976-06-08

Garvin, Patrick P.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

526140, 526142, 526158, 526335, C08F 412, C08F 414, C08F 464

Patent

active

039621308

ABSTRACT:
Ziegler-type hydrocarbon-soluble catalyst systems for the polymerization of conjugated diolefins, or mixtures thereof, to obtain high molecular weight polymers possessing varying proportions of trans-1,4 units, in the range of 50-90%. The catalyst systems are based on a non-reduced salt of titanium, an organometallic compound, and an iodine-containing compound, or iodine corresponding to the generalized formula Ti(halide).sub.4 -M.sub.n I.sub.m -AlR.sub.a X.sub.3 -a, where M is aluminum or tetravalent tin, n is 0 or 1, m is the valence of M and where n is 0, m is 2, X is Cl, Br or I, a is 2 to 3, R is alkyl, halide is Cl, Br or I, and where halide is I, M.sub.n I.sub.m may be omitted.

REFERENCES:
patent: 3663450 (1972-05-01), Cozewith et al.
patent: 3779944 (1973-12-01), Cozewith et al.
patent: 3865749 (1975-02-01), Tornquist et al.

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