Patent ID: 8148313

Claim:
A mixture comprising at least two different surface-active substances from the groups a) and b), where the surface-active compound a) is selected from compounds of the general formula (Ia) in which M is a radical CH 2 —CH 2 or CHR—CH 2 , R, R′ and R″, independently of one another, are saturated, unsaturated, linear or branched alkyl or alkenyl radicals having 6 to 22 carbon atoms, and the indices n and m, independently of one another, can assume values between 1 and 40, and/or compounds of the general formula (Ib) in which R′″ and R″″, independently of one another, are saturated, unsaturated, linear or branched alkyl or alkenyl radicals having 4 to 22 carbon atoms, and the indices n and m, independently of one another, can assume values between 1 and 40, X′ and X″, independently of one another, are H or saturated, unsaturated, linear or branched alkyl or alkenyl radicals having 1 to 18 carbon atoms and the compounds of type b) of the general formula (II) R 1 O[CH 2 CH 2 O] x CH 2 CH(OM)R 2 (II) in which R 1 is a linear or branched alkyl and/or alkenyl radical having 4 to 22 carbon atoms, or is a radical R 2 —CH(OH)CH 2 , where R 2 is a linear or branched alkyl and/or alkenyl radical having 8 to 16 carbon atoms, x is a number from 20 to 80, preferably from 40 to 80, and M is a hydrogen atom or a saturated alkyl radical having 1 to 18 carbon atoms and/or of the general formula (III) R 3 O[CH 2 CHCH 3 O] z [CH 2 CH 2 O] y CH 2 CH(OH)R 4 (III) in which R 3 is a linear or branched alkyl and/or alkenyl radical having 8 to 22 carbon atoms, R 4 is a linear or branched alkyl and/or alkenyl radical having 8 to 16 carbon atoms, y is a number from 10 and 35, z is zero or must be a number from 1 to 5.