Hair-dyeing agent

Details Hair-dyeing agent Hair-dyeing agent

2008-09-30

2008-09-30

Elhilo, Eisa B (Department: 1796)

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

C008S406000, C008S463000, C008S565000, C008S568000, C008S576000, C008S607000, C008S648000

Reexamination Certificate

active

11385790

ABSTRACT:
A hair-dyeing agent, which contains at least one compound represented by formula (1) or (2) as a dye:wherein X1and X2each are an oxygen atom, nitrogen atom, sulfur atom, or dialkylmethylene group; R1, R2, R3, R4, R5, R6, R7, and R8each independently are a hydrogen atom or substituent; M1and M2each are a counter ion to balance the charge of the molecule; and m1and m2each are a number of 0 or more necessary to neutralize the charge of the molecule.

REFERENCES:
patent: 6329165 (2001-12-01), Chattoraj et al.
patent: 10-502946 (1998-03-01), None
patent: WO-97/20545 (1997-06-01), None
STIC Search Report dated Oct. 29, 2007.

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