Cationic diazo dyes for the dyeing of hair

Details Cationic diazo dyes for the dyeing of hair Cationic diazo dyes for the dyeing of hair

1997-11-26

1999-03-09

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8405, 8662, 534603, 534580, 534859, A61K 713, C07C24508, C09B 4402

Patent

active

058794131

ABSTRACT:
Diazo dyes of the general formula (I) ##STR1## are described where X.sup.+ is a quaternary ammonium group and Y.sup.- is a counterbalancing anion. The dyes are useful for coloring hair.

REFERENCES:
patent: 1963133 (1934-06-01), Jordan et al.
patent: 3524842 (1970-08-01), Grossmann et al.

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