Substituted 2-nitro metaphenylenediamines, a process for their p

Details Substituted 2-nitro metaphenylenediamines, a process for their p Substituted 2-nitro metaphenylenediamines, a process for their p

1988-07-26

1989-09-05

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Dyeing involving animal-derived natural fiber material ,...

Hair dyeing

564440, 564441, 8406, 8408, 8415, 8416, 8414, A61K 713, C07C14942

Patent

active

048634824

ABSTRACT:
A 2-nitro metaphenylenediamine for use in dyeing keratinous fibers, in particular human hair, has the formula: ##STR1## wherein Z represents a --O--, --S-- or --NH-- radical. R.sub.1, R.sub.2 and R.sub.3 may be identical or different and represent a hydrogen atom or an alkyl, hydroxyalkyl, polyhydroxyalkyl, alkoxyalkyl or hydroxyalkoxyalkyl radical or an aminoalkyl radical whose amino radical may be mono- or disubstituted by an alkyl or hydroxyalkyl radical. The alkyl and alkoxy radicals contain 1 to 6 carbon atoms. Cosmetically acceptable salts of this compound may also be used.

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