Fire-fighting compositions

Details Fire-fighting compositions Fire-fighting compositions

A - Human Necessities

62

D

31/6

A62D 1/02 (2006.01)

Patent

CA 1165555

ABSTRACT FIRE-FIGHTING COMPOSITIONS The invention is a composition for combating fires and for inhibiting release of flammable vapour from liquids, which is film-forming and comprises, in an aqueous medium, a blend of a hydrolysed protein and an ampholytic sulphonamide fluorosurfactant falling within the general formula:- C6F13.(CH2)2.SO2.N(H or CH3).(CH2)2 or 3.?(CH3)2.(CH2)1-3.COO-, said fluorosurfactant, when as a 0.1% aqueous solution, being film-forming on cyclohexane at normal temperatures. The composition preferably has an interfacial tension on 4-star petrol of at least 3.5 clyn.cm-1 and is particularly suitable for employment in foam form.

386425

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