Patent ID: 7393817

Claim:
A surfactant composition comprising (A) 1 to 70 wt % referring to components (A) and (B), of one or more gemini surfactant(s) and, (B) referring to the remainder, based on the total of components (A) and (B), two or more co-amphiphile(s) having an HLB value of less than or equal to 6; wherein at least one gemini surfactant has the general formula (B.III) wherein the substituents have the following meaning FG is -COOM or -SO 3 M; R 1 , R 3 is C 5 - to C 25 -alkyl, that can be branched, unbranched, saturated, or unsaturated as far as not adjacently diunsaturated; R 2 is C 1 - to C 12 -alkylene; A is CH 2 , C 2 H 4 , C 3 H 6 , C 4 H 8 ; and M is alkali, (alkyl)ammonium, alkanol ammonium, H, or 1/2 alkaline earth; and wherein the co-amphiphile(s) having an HLB value of less than or equal to 6 comprise a mixture of at least two different co-amphilphiles selected from at least two different groups (a) to (d): (a) one long chain alcohol(s) being C 6 - to C 40 - alcohol(s); (b) long chain acid(s) being C 6 - to C 24 - carboxylic acid(s); (c) ester(s)/partial ester(s) of a polyol with one or more mono- or polycarboxylic acid(s) selected from the group consisting of: a sorbitan (C 6 - to C 22 -) ester, a methylglucoside (C 6 - to C 22 -) ester, a sugar (C 6 - to C 22 -) ester, a mono-, di-, and triglyceride of a C 6 - to C 22 - carboxylic acid, a lactic acid or citric acid esterified derivative of a mono- or di-glyceride of a C 6 - to C 22 -carboxylic acid, a polyglycerol (C 6 - to C 22 -) ester, and a vitamin ester; and (d) salicylic acid benzoic acid lecithin.