Colorants comprising cationic azacyanine dyes

Details Colorants comprising cationic azacyanine dyes Colorants comprising cationic azacyanine dyes

2006-01-25

2008-08-19

Elhilo, Eisa B (Department: 1796)

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

C008S406000, C008S429000, C008S688000, C008S689000, C008S690000, C008S691000, C548S100000

Reexamination Certificate

active

07413578

ABSTRACT:
The present invention relates to agents comprising cationic azacyanine dyes of the formula (I) for coloring keratin fibers, such as, for example, wool, silk or furs and in particular human hair(where X1 is N—R1, O or S and X2 is N—R2, O or S),and to a method of coloring hair with varying degrees of damage.

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