Dyeing compositions for kerating fibres based on nitroanilines a

Details Dyeing compositions for kerating fibres based on nitroanilines a Dyeing compositions for kerating fibres based on nitroanilines a

1989-09-13

1991-06-25

Hollrah, Glennon H.

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8409, 8410, 8414, 544167, 546232, 564346, 564367, 564369, A61K 713, C07C21149, C07C21520, C07C21744

Patent

active

050264010

ABSTRACT:
There are described dyeing compositions for keratin fibres, and in particular for human hair, containing a dyestuff of the formula: ##STR1## in which A denotes an alkylene group, an alkylene group substituted by one or more OH groups, or an alkylene group interrupted by a hetero-atom such as oxygen or by an --NH-- group, R.sub.1 and R.sub.2, which are identical or different, denote hydrogen, alkyl, monohydroxyalkyl or polyhydroxyalkyl, or R.sub.1 and R.sub.2 can together form a heterocyclic ring chosen from among piperidino or morpholino groups, Y denotes alkoxy or NO.sub.2, R denotes hydrogen or lower alkyl, and if Y denotes alkoxy, Z denotes NO.sub.2 and is located in the para-position to the amine group, and if Y denotes NO.sub.2, (a) Z denotes alkoxy or OH and is located in the para-position to the NO.sub.2 group, or alternatively (b) Z denotes OH and is located in the para-position to the amine group, and also their cosmetically acceptable salts. Many of these dyestuff are novel.

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Foster et al., "1-(2-Dialkylaminoethyl)-Methoxybenzimidazoles", Recueil, 82 (1963), pp. 583-586.

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