A substituted m-aminophenol coupler useful in hair dyeing havina the formula
and acid addition salts thereof wherein x and y are selected from the group consisting of halogen and the groups OR of which R ist the same or different alkyl, aminoalkyl of hydroxylalkyl groups, at least one for x or y being a group OR and a process for preparing these compounds.
一种用于染发的取代间
氨基苯酚偶联剂,其式及其酸加成盐,其中 x 和 y 选自卤素和基团 OR(其中 R 是相同或不同的烷基、
氨基烷基或羟基烷基)组成的组,x 或 y 中至少有一个是基团 OR,以及制备这些化合物的工艺。