Fire-retardant polyurethane foams

Details Fire-retardant polyurethane foams Fire-retardant polyurethane foams

1978-09-01

1980-07-15

Cockeram, H. S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

260956, 260957, 521107, 521168, 521906, 526274, 526277, 526278, C08G 1814, C08G 1838, C08G 1862

Patent

active

042129532

ABSTRACT:
Production of urethane foams of increased fire resistance by mixing an ethylenic, e.g. allyl or vinyl, phosphorus compound with a polyol and polymerizing the polyol with polyisocyanate while simultaneously polymerizing the ethylenic phosphorus compound with a suitable catalyst to form an interpenetrating network of urethane polymer and phosphorus-containing polymer.

REFERENCES:
patent: 2577281 (1951-12-01), Simon et al.
patent: 3079417 (1963-02-01), Farrar
patent: 3544509 (1970-12-01), Carroll et al.
patent: 3868431 (1975-02-01), Hutchinson
patent: 3936514 (1976-02-01), Shim
patent: 3948826 (1976-04-01), Smalheiser
patent: 4111828 (1978-09-01), Wang
patent: 4129710 (1978-12-01), Jin

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