4,4'-disubstituted diphenylamines and the use thereof in dye composition

Abstract

Diphenylamine of the formula ##STR1## wherein R.sub.1 and R.sub.4 each independently represent a member selected from the group consisting of hydrogen, halogen, lower alkyl, lower alkoxy, amino, lower alkyl amino, acylamino, lower carbamylalkyl amino, lower hydroxyalkyl amino, lower carbalkoxy amino and ureido; R.sub.2 and R.sub.3 each independently represent a member selected from the group consisting of hydrogen, halogen, lower alkyl, lower alkoxy, acylamino and ureido; R.sub.5 represents a member selected from the group consisting of hydrogen, halogen, lower alkyl and lower alkoxy; R.sub.6 represents a member selected from the group consisting of lower hydroxyalkyl, lower amino alkyl, lower acylamino alkyl, lower mesylamino alkyl, lower carbamylalkyl, lower sulfoalkyl, lower piperidinoalkyl, lower morpholinoalkyl, lower mono alkyl lower amino alkyl and lower dialkyl lower amino alkyl; and R.sub.7 represents a member selected from the group consisting of lower alkyl, lower hydroxyalkyl, lower aminoalkyl, lower acylamino alkyl, lower mesylamino alkyl, lower carbamyl alkyl, lower sulfoalkyl, lower piperidinoalkyl, lower morpholinoalkyl, lower monoalkyl lower amino alkyl and lower dialkyl lower amino alkyl, each of said alkyl and alkoxy moieties containing 1-6 carbon atoms and each of said acyl moieties representing R--CO-- wherein R is selected from the group consisting of an aliphatic and aromatic group. The said diphenylamine is usefully employed in a dye composition for dyeing keratinic fibers.