Process for the preparation of cationic azo compounds

Details Process for the preparation of cationic azo compounds Process for the preparation of cationic azo compounds

2006-05-16

2006-05-16

Powers, Fiona T. (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

C534S607000, C534S608000, C008S405000

Reexamination Certificate

active

07045608

ABSTRACT:
A process for the preparation of certain cationic azo compounds is described, as well as the use thereof for dyeing keratin-containing fibres, especially human hair, in which specific cationic azo dyes are used.

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T. Deligeorgiev et al., Dyes and Pigments, vol. 31, No. 3, pp. 219-224, (1996).

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