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US 8,076,385 B2Granted
Use of flame retardant aqueous liquid composition in making flame retardant polyurethane foam article
AssigneeNankyo Efnica CO., LTD.
InventorChiaki Ohama
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Abstract
A flame retardant aqueous liquid composition containing water, guanidine sulfamate, a citric acid compound including a metal salt of citric acid, and a water soluble polymer. A flame retardant polyurethane foam is produced by a process including the steps of providing a mixture of the above flame retardant aqueous liquid composition with a polyol and an isocyanate, and reacting the mixture in the presence of a catalyst.
Claims11
A process for producing a flame retardant polyurethane foam, comprising the steps of:
- providing a mixture comprising a flame retardant aqueous liquid composition, a polyol and an isocyanate;
- and
- reacting said mixture in the presence of a catalyst;
- wherein the flame retardant aqueous liquid composition comprises water, guanidine sulfamate dissolved in the water, a citric acid compound comprising a metal salt of citric acid dissolved in the water, and a water soluble polymer dissolved in the water;
- and
- wherein the water soluble polymer is at least one polymer selected from the group consisting of cellulose-based water soluble organic polymers, water soluble vinyl polymers, polyoxyethylene-based water soluble organic polymers, water soluble polyoxyethylene-polyoxypropylene copolymers, water soluble acrylic polymers, water soluble urethane polymers, gum arabic, gum tagacanth, arabinogalactan, locust bean gum, guar gum, gum karaya, carageenan, pectin, agar, guince seed, starch, algae colloid, trant gum, xanthan gum, dextran, succinoglucan, pullulan, collagen, casein, albumin, gelatin, carboxymethyl starch, methylhydroxypropyl starch, sodium alginate and propylene glycol alginate.
3 more elements
A process for producing a flame retardant polyurethane foam, comprising the steps of:
- providing a mixture comprising a flame retardant aqueous liquid composition, a polyol and an isocyanate;
- and
- reacting the mixture in the presence of a catalyst,
- wherein the flame retardant aqueous liquid composition comprises water, guanidine sulfamate dissolved in the water, a citric acid compound comprising a metal salt of citric acid dissolved in the water, and a water soluble polymer dissolved in the water, and
- wherein said water soluble polymer is an organic polymer having polar groups selected from the group consisting of hydroxyl groups, carbonyl groups, carboxyl groups, ether groups, amino groups and urethane groups.
2 more elements
Dependencies are inferred from the claim text.