Patent ID: 7981856

Claim:
A surfactant composition comprising: at least one compound of formula (1) X − (CH 3 ) 3 N + —CH 2 —CO—Z—R (1) and at least one compound selected from those with formulae (2), (3) and (4) RZH (2) XH (3) X − (CH 3 ) 3 N + —CH 2—CO—OH (4) X being a sulphonate radical, R being a monovalent radical of formula C 2n H 2(2n−m)+1 containing 2n atoms of carbon and m double bonds, with 9≦n≦11, 0≦m≦3 if n=9 and 0≦m≦1 if n>9, and Z being selected from an atom of oxygen and a —NH— group, a compound of formula XH being optionally combined with at least one compound of formula RNH 2 in order to form at least one compound of formula X − RN + H 3 , said composition excluding a compound of formula (1) where X is methylsulfonate, n is 9, m is 1 and Z is oxygen.