Patent ID: 7691283
Filing Date: 2010-04-06
Classification: A62D,C11D

Abstract:
1. A fire-extinguishing agent that is a water-addition-type surfactant-based composition, comprising: at least one surfactant component selected from the group consisting of a fatty acid sodium salt and a fatty acid potassium salt, in an amount of 8 to 50% by mass; at least one chelating component selected from the group consisting of N,N-bis(carboxymethyl)-L-glutamic acid tetrasodium salt, L-aspartate-(N,N)-diacetic acid tetrasodium salt, N-2-hydroxyethyliminodiacetic acid disodium salt, (S,S)-ethylenediaminesuccinic acid trisodium salt, methylglycinediacetic acid trisodium salt, ethylenediaminetetraacetic acid, nitorilotriacetic acid, diethylenetriaminepentaacetic acid, hydroxyethylethylenediaminetriacetic acid, triethylenetetraminehexaacetic acid, 1,3-propanediaminetetraacetic acid, 1,3-diamino-2-hydroxypropanetetraacetic acid, dihydroxyethylglycine, glycol ether diamine tetraacetic acid, hydroxyethanediphosphonic acid, aminotrimethylenephosphonic acid, 1,2,4-butanetricarboxylic acid, dihydroxyethylethylenediaminediacetic acid, sodium gluconate, sodium glucoheptonate, inositol hexaphosphate, hydroxyethanoic acid, 2-hydroxypropanoic acid, 2-hydroxysuccinic acid, 2,3-dihydroxybutanedioic acid, and 2-hydroxy-1,2,3-propanetricarboxylic acid, in an amount of 1 to 50% by mass; and a mixed solvent of water and at least one solvent selected from the group consisting of an alcohol and an ester, comprising 15 to 50% by mass of propylene glycol, relative to the whole amount of the composition; wherein the sum total of the amounts of the surfactant component, the chelating component, and the mixed solvent including propylene glycol does not exceed 100% by mass, and wherein said composition is suitable for use as a fire-extinguishing agent.