Agents for coloring keratin fibers

Details Agents for coloring keratin fibers Agents for coloring keratin fibers

2008-07-01

2008-07-01

Elhilo, Eisa B (Department: 1796)

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

C008S406000, C008S408000, C008S437000, C008S461000, C008S465000, C008S570000, C008S571000, C008S572000, C008S574000, C008S575000, C008S576000, C548S146000, C548S215000, C548S300100

Reexamination Certificate

active

07393366

ABSTRACT:
The present invention relates to agents for coloring keratin fibers which comprise at least one zwitterionic azo dye of the general formula (I)where R1 is an alkylsulfonate radical of the formula (II),

REFERENCES:
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patent: WO-97/20545 (1997-06-01), None
patent: WO-01/10379 (2001-02-01), None
patent: WO-03/030847 (2003-04-01), None
STIC Search Report dated Nov. 1, 2007.
International Search Report, Application No. PCT/US2006/002495, dated Jun. 7, 2006 (5 pages).

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