Fire-fighting compositions

Details Fire-fighting compositions Fire-fighting compositions

A - Human Necessities

62

D

31/6

A62D 1/00 (2006.01) A62D 1/02 (2006.01)

Patent

CA 1082905

ABSTRACT OF THE DISCLOSURE Concentrates suitable for making fire-fighting liquids upon sixteen-fold dilution are described comprising particular perfluoro ampholytic surfactants, solvents and flourine-free surfactants. The ampholytic surfactants are of the general formula Image wherein n represents an integer of from 1 to 20, a represents an integer of from 2 to 10, q represents an integer of from 0 to 10, p represents an integer from 0 to 10 and each of R1, R2 and R3, which may be the same or different, are hydrogen, C1-6alkyl or CnF2n+1-(CH2)a-SO2 The solvent is glycol or glycol ether preferably butyldigol or butyl cellosolve. When the preferred flourine-free surfactants are used the solutions obtainable on dilution will form a film on n-hexane. The concentrates contain less that 2% of the perflouro surfactant.

275645

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