Patent ID: 6896705

Claim:
A sulfuric ester of formula (1) wherein R 1 is an aliphatic radical having 1 to 30 carbon atoms, R 2 is a radical of formula (2) wherein n is an integer from 0 to 30, m is an integer from 1 to 29, X is an aliphatic radical having 4 to 24 carbon atoms, and Y is H or SO 2 (OM), where M represents hydrogen, alkali metal, ammonium, mono-, di-, tri-, or tetra(C 1 -C 6 -alkyl)ammonium, or mono-, di-, tri-, or tetra(C 2 -C 6 -alkanol)ammonium ions, R 3 is a radical of formula (3) wherein p is an integer from 4 to 35, R 4 is H, methyl, ethyl, phenyl, or mixtures of H and methyl, and Z is H, methyl, ethyl, or SO 2 (OM), where M represents hydrogen, alkali metal, ammonium, mono-, di-, tri-, or tetra(C 1 -C 6 -alkyl)ammonium, or mono-, di-, tri-, or tetra(C 2 -C 6 -alkanol)ammonium ions, and a, b, and c are identical or different and are 0 or 1, with the proviso that a+b+c is 2.