abstract |
An improved aqueous film-forming foamable concentrate which is particularly useful for extinguishing flammable liquid fires. The preferred formulation contains (a) fluoroaliphatic amphoteric surfactant, preferably a fluorinated aminocarboxylate having a C4? to C10? perfluoroaliphatic group, (b) fluoroaliphatic anionic surfactant, preferably a C4? to C10? perfluoroalkane sulfonate, and (c) short chain (C6? to C10?) alkyl ether sulfate hydrocarbon surfactant. |