Dyeing composition for dyeing keratinous fibers comprising...

Details Dyeing composition for dyeing keratinous fibers comprising... Dyeing composition for dyeing keratinous fibers comprising...

2005-04-26

2005-04-26

Einsmann, Margaret (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, C008S571000, C008S573000, C008S574000, C548S318100, C548S321100, C548S400000, C546S184000, C546S249000

Reexamination Certificate

active

06884265

ABSTRACT:
The invention concerns a novel dyeing composition for dyeing keratinous fibers, in particular human hair, comprising a dicationic diazo dye of formula (I): W1—W2—N═N—W3—L—W4—N═N—W5—W6, as well as the dyeing method using said composition and the novel compounds of formula (I).

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Derwent Abstract of JP 55 022638 A.
Chemical Abstracts Servicé, Accession No. 72:134134 ( XP0021880108) of JP 45 004332.
Chemical Abstracts Service, Accession No. 70:12645 (XP002188107).

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