Sequenced surfactant oligomers, process for preparing the same and compositions containing the same

摘要

Sequenced oligomer surfactant has the formula: P-O-C2H3(CH2B)O-n'-C2H3(CH2A)O-m-C2H3(CH2B)O-nQ wherein one of P and Q represents hydrogen and the other represents alkyl having 1-20 carbon atoms; A represents R-CH2- or R'-O- wherein R is alkyl having 4-16 carbon atoms and R' is alkyl having 4-20 carbon atoms; B is selected from OH, R1R2N, R1R2N->O, R1R2N-O(+)HV(-), R1R2N(+)HV(-), R1R2R3N(+)Z(-) and R4S->(O)a, wherein R1 and R2 represent alkyl or hydroxyalkyl, R3 is methyl or ethyl, R4 is alkyl, hydroxyalkyl or dihydroxyalkyl, Z(-) is an anion selected from HSO3(-), CH3SO3(-), CH3SO4(-) and CH3-C6H4-SO3(-), R1R2N(+)HV(-) and R1R2N-O(+)HV(-) represent a salt of an amine or amine oxide, a is 0 or 1; m is a number from 2-10; and n and n' are numbers from 2-25, with one of n and n' capable of being 0. The oligomer surfactants are employed in cosmetic and pharmaceutical compositions.