| abstract |
Improved foaming film-forming aqueous concentrate particularly useful for extinguishing fires originating from flammable liquids. The preferred formulation contains (a) a fluoroaliphatic amphoteric surfactant, preferably a fluorinated amino carboxylate comprising a C4-C10 perfluoroaliphatic group, (b) a fluoroaliphatic anionic surfactant, preferably a C4-C10 perfluoroalkane sulphonate and (c) a surfactant d short chain alkyl ether sulfated hydrocarbon (C6-C10). |