3-substituted para-aminophenols and use thereof in dyeing kerati

Details 3-substituted para-aminophenols and use thereof in dyeing kerati 3-substituted para-aminophenols and use thereof in dyeing kerati

1997-06-04

1999-11-16

Liott, Caroline D.

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8406, 8407, 8408, 8421, 558418, 558423, A61K 713, C07C21576

Patent

active

059849754

ABSTRACT:
A method or composition for dyeing keratinous fibres using as an oxidation dye precursor a 3-substituted para-aminophenol of formula: ##STR1## where R.sub.1 represents alkyl, alkenyl, mono- or polyhydroxyalkyl, cyano, cyanoalkyl, halogenoalkyl, aminoalkyl or alkoxyalkyl and R.sub.2 represents hydrogen, alkyl or mono- or polyhydroxyalkyl, provided that when R.sub.2 is hydrogen R.sub.1 is not methyl or trifluoromethyl, and addition salts thereof with an acid.

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