Flame- and smoke-resistant polyurethane foam and a method for producing said foam
AssigneeBridgestone Tire Company Limited
InventorsToshio Yukuta, Takashi Ohashi, Katsuhiko Arai
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Abstract
An excellent flame- and smoke-resistant polyurethane foam is produced by reacting a polyol, a polyisocyanate and an amine-carbamate of primary or secondary amine having hydroxyl group in the presence of a catalyst and a surfactant.
Claims31
A flame- and smoke-resistant polyurethane foam obtained by reacting a polyol, a polyisocyanate and 3-40 parts by weight, based on 100 parts by weight of the polyol, of an amine-carbamate of primary or secondary amine having alcoholic hydroxyl group in the presence of a catalyst and a surfactant.
A flame- and smoke-resistant polyurethane foam obtained by reacting (a) poly(oxypropylene) triol, (b) tolylene diisocyanate used in an isocyanate index of 95-110, and (c) an amine-carbamate of an amine having an alcoholic hydroxyl group, the amount of the amine-carbamate (c) being 10-30 parts by weight based on 100 parts by weight of poly(oxypropylene) triol (a), in the presence of a catalyst and a surfactant.
A method for producing flame- and smoke-resistant polyurethane foams, which comprises dissolving a primary or secondary amine having alcoholic hydroxyl group in a polyol, blowing carbon dioxide gas into the solution to form an amine-carbamate, and reacting the resulting mixture of the polyol and the amine-carbamate with a polyisocyanate in the presence of a catalyst and a surfactant.
Dependencies are inferred from the claim text.