Hair dye composition

Details Hair dye composition Hair dye composition

2008-04-25

2010-11-02

Elhilo, Eisa B (Department: 1796)

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

C008S565000, C008S566000, C008S570000, C008S574000, C534S551000

Reexamination Certificate

active

07824449

ABSTRACT:
A hair dye composition containing a triazene dissociative direct dye represented by general formula (1): A-N═N—NH-B (1) wherein A and B are each a monocyclic or a bicyclic aromatic heterocyclic group that may have a substituent or a monocyclic or a bicyclic aryl group that may have a substituent and contain none of a carboxy group, a sulfo group and a quaternary ammonium group; and A and B each bind to a triazene-1,3-diyl group represented by —N═N—NH— via a carbon atom within A and B each. A and B may be the same or different.

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STIC Search Report dated May 20, 2010.

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