Azo polyether dyestuffs, formulations of these dyestuffs, their preparation and their use

摘要

Dyestuff formulations which contain a dyestuff with at least one of the groupings of the formula <IMAGE> <IMAGE> <IMAGE> and an emulsifying polar-nonpolar compound, are outstanding suitable for dyeing synthetic fibres since they are well soluble in the dyeing bath and do not require expensive formulation process for their preparation. In the formulae, the symbols have the following meanings: G is a bridge member, A is alkylene, X is hydrogen, Y, -COY or -CONR1R2, Y is alkyl, cycloalkyl, aralkyl or aryl, R1 is hydrogen or Y, R2 is hydrogen or alkyl and n is a number from 1 to 7, with the proviso that n is at least 2 if X is -COY.