Pyrazolo-triazoles and use of said compounds for dyeing...

Details Pyrazolo-triazoles and use of said compounds for dyeing... Pyrazolo-triazoles and use of said compounds for dyeing...

2007-03-20

2007-03-20

Elhilo, Eisa (Department: 1751)

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

C008S406000, C008S408000, C008S409000, C008S411000, C008S412000, C008S421000, C008S435000, C548S300100

Reexamination Certificate

active

10467818

ABSTRACT:
The subject of the invention is novel pyrazolo[3,2-c]-1,2,4-triazoles of formula (I) which are useful for the oxidation dyeing of keratinous fibers, in particular human hair, the compositions containing these compounds and the dyeing method using them.in whichR1 represents a hydroxyl group or a C1–C4 alkyl group substituted with at least one hydroxyl radical, and R2 represents an aryl group which may be substituted with at least one radical chosen from the group consisting of halogen, nitro, cyano, alkyl, hydroxyl, alkoxy, amino, alkylamino, dialkylamino, acylamino, sulfonamido, alkylthio, alkoxycarbonyl, carboxy and sulfo radicals.

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