Urethane-containing oxazolidone-modified isocyanurate foams and

Details Urethane-containing oxazolidone-modified isocyanurate foams and Urethane-containing oxazolidone-modified isocyanurate foams and

1987-08-03

1988-08-23

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521118, 521137, 521156, C08G 1814

Patent

active

047661585

ABSTRACT:
Urethane and oxazolidone-containing isocyanurate foams characterized by cracking resistance and scorching resistance and thermal stability at a temperature of about 160.degree. C. or higher. These foams are produced by reacting at least one polyisocyanate with at least one polyepoxide and at least one polyol in the presence of catalyst, surfactant, and blowing agent.

REFERENCES:
patent: 3673128 (1972-06-01), Hayash, Jr. et al.
patent: 3849349 (1974-11-01), Frisch et al.
patent: 4699931 (1987-10-01), Fuzesi et al.

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