Patent ID: 8524104

Claim:
A fire extinguishing composition comprising: at least one solvent; and a first fluorosurfactant of formula (I) where L is absent, C 1 -C 10 alkylene-O—, (—CH 2 CH 2 O—) n , (—CH 2 CH(CH 3 )O—) n , or (—CH 2 CH(OH)CH 2 O—) n ; n is an integer from 1 to 10; R f is a C 4 -C 10 alkyl group substituted with 2m or (2m+1) fluoro atoms where m is the number of carbons in the alkyl backbone; M is an alkali metal cation, an alkaline earth metal cation, ammonium cation, a C 1 -C 4 mono-substituted ammonium cation, a C 1 -C 4 di-substituted ammonium cation, a C 1 -C 4 tri-substituted ammonium cation, or a C 1 -C 4 tetra-substituted ammonium cation; and x is an integer selected from 1 or 2, and corresponds to the valency of M.