Flame-retardant polyurethane composition

Details Flame-retardant polyurethane composition Flame-retardant polyurethane composition

C - Chemistry, Metallurgy

08

L

403/37, 400/5514

C08L 75/04 (2006.01) C08J 9/00 (2006.01) C08K 3/00 (2006.01) C08K 3/10 (2006.01) C08K 3/22 (2006.01)

Patent

CA 2014073

FLAME-RETARDANT POLYURETHANE COMPOSITION Abstract of the Disclosure Polyurethane foams having improved flame retardant properties employing small quantities of chlorinated polyvinyl chloride and flame-retardant synergist, such as antimony trioxide, Sb2O3, and antimony pentoxide, Sb2O5, arsenic trioxide, arsenic pentoxide, zinc sulfate, zinc oxide, zinc borate, bismuth oxide, molybdenum oxide, tungsten oxide, stannous oxide, and mixtures thereof. Small quantities of melamine may also be pres- ent. The additives may be suspended in the polyol prior to reaction with a polyisocyanate in the presence of a polyurethane catalyst in a conventional manner to pro- duce improved polyurethane foams. Because very small quantities of the additives are used, the physical prop- erties of the foams are not adversely affected by their presence.

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