| 摘要 |
1. An assistant mixture of acid esters of adducts of ethylene oxide and propylene oxide, characterized in that the mixture consists of at least one acid ester of the formula see diagramm : EP0197001,P12,F2 in which s is 3 to 10, p is 5 to 15, R is an aliphatic radical having at least 6 carbon atoms, one of Z1 and Z2 is methyl and the other is hydrogen and X is the acid radical of a lower aliphatic dicarboxylic acid, and at least one acid ester of the formula see diagramm : EP0197001,P12,F3 in which m is 3 to 10, n is 5 to 15, R1 is an aliphatic radical having at least 6 carbon atoms or alkylphenyl having 4 to 16 carbon atoms in the alkyl moiety, one of Z1 and Z2 is methyl and the other is hydrogen and X1 is the acid radical of an oxygen-containing inorganic acid. |
