Aqueous foam fire extinguisher

An aqueous foam fire extinguisher comprising (A) a fluorine-containing aminosulfonate-type surface-active agent of formula (A-2)

• Rf--Z--Q.sub.1 --N(R)--Q.sub.2 --SO.sub.3 M
• wherein Rf represents a fluorinated aliphatic group having 3 to 20 carbon atoms, Z is a divalent linking group selected from the group consisting of --SO.sub.2 N(R.sub.1)--, --CON(R.sub.1)--, --(CH.sub.2 CH.sub.2).sub.i SO.sub.2 N(R.sub.1)--, ##STR22## in which R.sub.1 represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, and i represents an integer of 1 to 10, Q.sub.1 represents (--CH.sub.2).sub.j, in which j is an integer of 1 to 6 or ##STR23## in which R.sub.2 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R represents a hydrogen atom, an alkyl or hydroxyalkyl group having 1 to 3 carbon atoms, --Q.sub.2 SO.sub.3 M or --(CH.sub.2).sub.k COOM, in which k represents an integer of 1 to 4, Q.sub.2 represents (--CH.sub.2).sub.l -- in which l represents an integer of 1 to 4, ##STR24## in which R.sub.3 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, or ##STR25## M represents a cationic atom or atomic grouping selected from the group consisting of a hydrogen atom, an alkaline earth metal and --N(H).sub.m (R.sub.4).sub.n, in which R.sub.4 represents an alkyl or hydroxyalkyl group having 1 to 3 carbon atoms, and m and n are integers of 0 to 4 provided that m+n=4,
• (B) a cationic water-soluble polymeric substance which is a polyamine-type polymeric substance having a primary amino group, a secondary amino group, a tertiary amino group, an ammonium group, a pyridinium group or a quaternary ammonium group in the main chain or side chain, and (C) a polybasic acid compound which is an aromatic, aliphatic, alicyclic or heterocyclic dibasic, tribasic, tetrabasic, pentabasic or hexabasic acid having carboxylic, sulfonic or phosphoric acid groups, the weight ratio of the component (B) to the component (A), B/A, being from 0.05 to 50, the weight ratio of the component (A) to the component (B) plus the component (C), A/B+C being from 0.01 to 10, and the weight ratio of the component (B) to the component (C), B/C being from 5 to one-third.

An aqueous foam fire extinguisher comprising (A) a fluorine-containing aminocarboxylate-type surface-active agent of formula (A-3) ##STR26## wherein Rf represents a polyfluoralkyl group having 3 to 20 carbon atoms which may contain an oxygen atom, a polyfluoroalkenyl group, a polyfluorocyclohexyl group, a polyfluorocyclohexylalkyl group or a polyfluorocyclohexyl-alkenyl group, Z represents a divalent linking group selected from the group consisting of ##STR27## in which R.sub.1 represents an alkyl group having 1 to 12 carbon atoms, an alkenyl group, a monovalent group containing an aromatic ring, or --CH.sub.2 CH.sub.2 --.sub.j R.sub.2, in which R.sub.2 represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and j represents an integer of 1 to 6, and i represents an integer of 1 to 3, Q represents --(CH.sub.2)--.sub.l, ##STR28## --CH.sub.2 --.sub.m O--CH.sub.2 --.sub.m or --CH.sub.2 --.sub.p O--CH.sub.2 --.sub.2 O--CH.sub.2 --q, in which l is an integer of 1 to 6, m and n are integers of 2 to 6, and p and q are 2 or 3, and each of Q.sub.1 and Q.sub.2 represents a divalent linking group --CH.sub.2 --.sub.r or --CH.sub.2 --.sub.s in which r and s are integers of 1 to 3 and each of M.sub.1 and M.sub.2 represents a hydrogen atom or an inorganic or organic cation,

• and (B) a cationic water-soluble polymeric substance which is a polyamine-type polymeric substance having a primary amino group, a secondary amino group, a tertiary amino group, an ammonium group, a pyridinium group or a quaternary ammonium group in the main chain or side chain, the weight ratio of the component (B) to the component (A), B/A being from 0.05 to 50.

An aqueous foam fire-extinguisher comprising (A) a fluorine-containing aminocarboxylate-type surface-active agent of formula (A-2) ##STR29## wherein Rf represents a polyfluoroalkyl group having 3 to 20 carbon atoms which may contain an oxygen atom, a polyfluoroalkenyl group, a polyfluorocyclohexyl group, a polyfluorocyclohexylalkyl group or a polyfluorocyclohexylalkenyl group, Z represents a divalent linking group selected from the group consisting of ##STR30## in which R.sub.1 represents an alkyl group having 1 to 12 carbon atoms, an alkenyl group, a monovalent group containing an aromatic ring, or --CH.sub.2 CH.sub.2 --.sub.j R.sub.2, in which R.sub.2 represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and j represents an integer of 1 to 6, and i represents an integer of 1 to 3, Q represents --CH.sub.2 --.sub.l, ##STR31## --CH.sub.2 --.sub.m O--CH.sub.2 --.sub.m or --CH.sub.2 --.sub.p O--CH.sub.2 --.sub.2 O--CH.sub.2 --.sub.q, in which l is a integer of 1 to 6, m and n are integers of 2 to 6, and p and q are 2 or 3, and each of M.sub.1 and M.sub.2 represents a hydrogen atom or an inorganic or organic cation,

• (B) a cationic water-soluble polymeric substance which is a polyamine-type polymeric substance having a primary amino group, a secondary amino group, a tertiary amino group, an ammonium group, a pyridinium group or a quaternary ammonium group in the main chain or side chain, and (C) a polybasic acid compound which is an aromatic aliphatic, alicyclic or heterocyclic dibasic, tribasic, tetrabasic, pentabasic or hexabasic acid having carboxylic, sulfonic or phosphoric acid groups, the weight ratio of the component (B) to the component (A), B/A being from 0.05 to 50, the weight ratio of the component (A) to the component (B) plus the component (C), A/B+C being from 0.01 to 10, and the weight ratio of the component (B) to the component (C), B/C being from 5 to one-third.