| abstract |
Sulfur containing nitroamino benzene dyes of formula:n and salts thereof whereinn (a) R₁ and R₂ are the same or different and are selected from the group consisting of alkyl, hydroxyalkyl, polyhydroxyalky, aminoalkyl, monoalklylaminoalkyl and dialkylaminoalkyl, n nwherein (b) n is 0, 1 or 2, and wherein (c) The groupn occupies a position that is meta or para to the group - NHR₁; a process for synthesizing these compounds and their use as direct dyeing hair dyes also being disclosed. |