Azomethine direct dyes or reduced precursors of these dyes...

Details Azomethine direct dyes or reduced precursors of these dyes... Azomethine direct dyes or reduced precursors of these dyes...

2008-12-09

2011-12-27

Elhilo, Eisa (Department: 1761)

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

C008S406000, C008S410000, C008S435000, C552S302000

Reexamination Certificate

active

08083809

ABSTRACT:
The invention relates to the dyeing of keratinous fibres using azomethine direct dyes of formula (I) or reduced precursors of azomethine direct dyes of formula (II) obtained from 2-chloro-3-amino-6-methylphenol. A subject-matter of the invention is a dyeing composition comprising at least one chlorinated azomethine direct dye or one reduced precursor of a chlorinated azomethine direct dye, a method for dyeing keratinous fibres which employs the said composition and their uses in the dyeing of keratinous fibres. This composition makes it possible to obtain a particularly stable and consistent colouring.

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