Method for dyeing keratinous fibres using 4-hydroxyindole deriva

Details Method for dyeing keratinous fibres using 4-hydroxyindole deriva Method for dyeing keratinous fibres using 4-hydroxyindole deriva

1995-06-05

1997-11-04

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8407, 8408, 8410, 8411, 8412, 8423, A61K 713

Patent

active

056834748

ABSTRACT:
Method for dyeing keratinous fibres, in particular human keratinous fibres such as hair, characterized in that a composition containing, in a medium appropriate for dyeing, at least one 4-hydroxyindole derivative of formula: ##STR1## in which R.sub.1 denotes hydrogen or C.sub.1 -C.sub.4 alkyl; R.sub.2 and R.sub.3, which may be identical or different, denote hydrogen, C.sub.1 -C.sub.4 alkyl, carboxyl or alkoxycarbonyl; and X denotes hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.18 alkoxy, halogen or acetyl-amino; at least one of the groups X, R.sub.1, R.sub.2 and R.sub.3 being other than hydrogen; as well as the salts of these compounds;

REFERENCES:
patent: 5034015 (1991-07-01), Junino et al.
patent: 5131911 (1992-07-01), Lang et al.
patent: 5391206 (1995-02-01), Cotteret
English language translation of DE 3,031,709, Wella AG, published Apr. 22, 1982, pp. 1-12.

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