Nitro-p-phenylenediamine derivatives, processes for their prepar

Details Nitro-p-phenylenediamine derivatives, processes for their prepar Nitro-p-phenylenediamine derivatives, processes for their prepar

1991-08-16

1992-11-17

Cooper, Jack

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8407, 8408, 8416, 8429, 564441, 564442, A61K 713

Patent

active

051639700

ABSTRACT:
Compounds of the formula I are described: ##STR1## wherein R.sup.1 and R.sup.2 independently of one another each represent a hydrogen atom, a (C.sub.1 -C.sub.2) alkyl group, a hydroxy (C.sub.2 -C.sub.3) alkyl group or a 2,3-dihydroxypropyl group and X is a fluorine atom, with the proviso that when R.sup.1 or R.sup.2 is hydrogen then the other is not a hydroxy (C.sub.2) alkyl group; processes for their preparation and aqueous hair coloring agents containing these compounds.

REFERENCES:
patent: 3973900 (1976-08-01), Husemeyer
patent: 4704474 (1987-11-01), Konrad
patent: 4725283 (1988-02-01), Cotteret
patent: 5067967 (1991-11-01), Akram
patent: 5091581 (1992-02-01), Seidel

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