Hair dye composition and dyeing method

Details Hair dye composition and dyeing method Hair dye composition and dyeing method

2006-06-06

2006-06-06

Elhilo, Eisa (Department: 1751)

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

C008S407000, C008S437000, C008S451000, C008S463000, C008S466000, C008S570000, C008S573000, C008S574000, C548S400000, C546S001000

Reexamination Certificate

active

07056355

ABSTRACT:
The present invention is directed to a hair dyeing composition containing a dissociative azo dye of the following general formula (1)in-line-formulae description="In-line Formulae" end="lead"?A-N═N—B  (1)in-line-formulae description="In-line Formulae" end="tail"?wherein “A” represents a phenyl or naphthyl group which may be substitued; “B” represents an atomic group containing a dissociative proton, with the proviso “A” and “B” are free of sulfo, carboxyl and quaternary ammonium groups. Additionally, the present invention describes a method of dyeing human or animal hair by using such a dye and the use of this direct azo dye for dyeing human or animal hair. The use of this direct azo dye can impart the hair with an extremely vivid color and has less color fading over time.

REFERENCES:
patent: 3148179 (1964-09-01), Carboni
patent: 3164522 (1965-01-01), Charle et al.
patent: 5889163 (1999-03-01), Takeuchi et al.
patent: 6027537 (2000-02-01), Leduc et al.
patent: 135016 (1901-08-01), None
patent: 100 28 686 (2001-12-01), None
patent: 844873 (1960-08-01), None
patent: 6-271435 (1994-09-01), None
Patent Abstracts of Japan, JP 01-271468, Oct. 30, 1989.

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