Use of polyoxyalkylated alkyl phenols as dyeing assistants for disperse dyes

摘要

A process for shifting the equilibrium of disperse dyestuffs between an aqueous liquor and a textile substrate comprising adding to the aqueous liquor a compound of formula I I wherein R1 and R2, independently, are hydrogen or C4-12-alkyl, provided that R1 and R2 are not both hydrogen; R is a mixed chain containing from 7 to 31 ethyleneoxy and 3 to 27 propyleneoxy units, with the proviso that R contains at most a total of 34 units.