Patent ID: 6379578
Filing Date: 2002-04-30
Classification: A62D

Abstract:
An aqueous fire foam which has a solidifying point of âˆ’20Â° C. or below by adding a solidifying point lowering agent to a solution containing at least one of:potassium hydrogen carbonate; ammonium phosphate; ammonium sulfate; ammonium bromide; boron oxide; and potassium tetraborate; wherein said aqueous fire foam, which has excellent foaming power and film-forming properties in a low temperature range, contains:perfluoroalkyl betaine as a fluorinated surfactant; an amide amino acid surfactant expressed by general formulas (1) and/or (2) shown below as a hydrocarbon surfactant wherein in said formulas: R1 is an alkyl group having 7 to 23 carbons, a hydroxy alkyl group, an aralkyl group, or an alkenyl group; and X is an alkali metal or hydrogen atom