| abstract |
A mixture comprising a surfactant and a cosurfactant is proposed, wherein the cosurfactant used is an amphiphilic polymer with the structural formula n nin which A′ is an unbranched or branched alkyl, cycloalkyl, aryl or aralkyl radical having 1 to 60 carbon atoms, Y is S or O, n nA is a structural unit with the formula n nin which n R 1 , R 2 , R 3 and R 4 independently of one another, are the substituents hydrogen, methyl, ethyl, n-propyl, octyl or phenyl, m is a running number in the range from 10 to 200, n nX is a structural unit with the formula n nin which the substituents R 1 , R 2 , R 3 and R 4 are the same as in the structural unit A, q=0 or q=1, B is a monomeric subunit based on ethylene oxide or a mixture of ethylene oxide and propylene oxide, n is a running number in the range from 20 to 500 and p=q+1. |