abstract |
A surfactant component comprising a compound of formula (I): (I) wherein R 1 is a C 5 to C 39 alkyl or alkenyl group and R 2 is a group of formula (a) wherein one of W, X, Y and Z is a covalent bond and the remaining groups are independently selected from H, M, SO 3 M and a further group of formula R 1 CO provided at least one of W, X, Y and Z is SO 3 M; and each M is independently a hydrogen ion, an ammonium ion or a metal ion. |