Flame retardant high density rigid polyurethane foams

Details Flame retardant high density rigid polyurethane foams Flame retardant high density rigid polyurethane foams

C - Chemistry, Metallurgy

08

G

403/35

C08G 18/50 (2006.01) C08G 18/38 (2006.01) C08K 5/3492 (2006.01)

Patent

CA 1274946

FLAME RETARDANT HIGH DENSITY RIGID POLYURETHANE FOAMS Abstract of the Disclosure The invention pertains to flame retardant high density rigid polyurethane foams prepared by the reaction of an alkylene oxide adduct of toluenediamine or diaminodi- phenylmethane with an organic polyisocyanate and a blowing agent wherein melamine is incorporated as the sole flame retardant compound. The amount of melamine is at least 5 percent by weight of the total composition.

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