Process for preparing graft polymers of .alpha.,.alpha.'-disubst

Details Process for preparing graft polymers of .alpha.,.alpha.'-disubst Process for preparing graft polymers of .alpha.,.alpha.'-disubst

1980-04-25

1981-08-04

Hamrock, William F.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525285, 525300, 525301, 525310, 525370, 525378, C08F 3506, C08F 2712

Patent

active

042823374

ABSTRACT:
Graft-polymers of,.alpha.,.alpha.'-disubstituted .beta.-propiolactones on isobutylene-triene copolymers are prepared by reacting an isobutylene-triene copolymer with maleic anhydride and possibly with other functionalizing agents adapted to introduce acid and ester groups in the copolymer molecule and by neutralizing or hydrolyzing, or both, with a tetraalkylammonium base, said functional groups, said neutralization or hydrolysis, or both, being followed by a grafting reaction with pivalolactone.

REFERENCES:
patent: 3627837 (1971-12-01), Webb
patent: 3639519 (1972-02-01), Hsieh et al.
patent: 3846387 (1974-11-01), Su
patent: 3884882 (1975-05-01), Caywood
patent: 3897513 (1975-07-01), Sundet
patent: 4029718 (1977-06-01), Sundet
patent: 4031168 (1977-06-01), Sharkey et al.

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