Polycationic monochromophoric hydrazone compounds, dye...

Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing

Reexamination Certificate

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C008S406000, C008S408000, C008S410000, C008S435000, C008S568000, C008S570000, C008S574000, C546S249000, C548S300100, C548S400000

Reexamination Certificate

active

07569079

ABSTRACT:
The present disclosure relates to polycationic monochromophoric hydrazone compounds of following formula (I):wherein W1is a heteroaromatic radical comprising 5 or 6 ring members, optionally condensed with an aromatic ring comprising 6 ring members, comprising a quaternized nitrogen atom and optionally another heteroatom which may or may not be identical to nitrogen; X, which may or may not be identical, is a nitrogen atom or a CR2group; Z is a cationic group comprising at least one quaternized nitrogen atom. 1The present disclosure also relates to a composition for dyeing human keratin fibers comprising the polycationic compounds disclosed herein, and to a dyeing process using the composition of the present disclosure, and ever further to multicompartment device.

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STIC Search Report dated Sep. 10, 2008.
English Language Derwent Abstract of non-English language document WO 2007/122340. (2007).
French Search Report for French Application No. 0754454 (French priority application for the present application) dated Dec. 4, 2007, Examiner A. Gregoire.

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