Rigid polyurethane foams

Details Rigid polyurethane foams Rigid polyurethane foams

1976-09-30

1978-06-13

Welsh, M. J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25AP, C08G 1862

Patent

active

040948285

ABSTRACT:
Covers rigid polyurethane foams possessing unusual dimensional stability and heat distortion properties. Said foams are obtained by reacting in the presence of a blowing agent and a catalyst of polyurethane formation, an organic polyisocyanate and a polyol combination comprising 5-85 percent by weight of a copolymer of allyl alcohol and styrene and 15-95 percent by weight of a polyether polyol having a hydroxyl number ranging from about 200 to about 800, said weight percentages being based on the total weight of said polyol combination.

REFERENCES:
patent: 2965615 (1960-12-01), Tess
patent: 3025268 (1962-03-01), Deex et al.
patent: 3252943 (1966-05-01), Dankert et al.

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