| abstract |
A surfactant composition comprising alkylarylsulfonate molecules wherein more than 30 wt.% of the alkylarylsulfonate molecules of the surfactant composition are species of the formula: n n [R - X - Ar (SO 3 ) - ]a [M n+ ] b n nwherein: nX is a linear acyclic aliphatic hydrocarbyl chain; nR is bound to a non-terminal carbon atom of X and is selected from H and C1 to C3 alkyl groups; nX and R together have 10 or less carbon atoms, preferably 9 or 10 carbon atoms, most preferably 10 carbon atoms; nAr is an aromatic group; nM is a cation or cation mixture, nn is selected from 1,2 and 3; and na and b are selected such that the alkylarylsulfonate molecule is electroneutral. |