Diaminopyrazole compounds and the use thereof in the oxidation dyeing of keratinous fibres
AssigneeL'oreal
InventorsThilo Fessmann, Eric Terranova
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Abstract
The invention relates to novel diaminopyrazole compounds having formula (I): wherein R1 represents a linear or branched C4-C5 alkyl or n-propyl group, or a linear or branched C3-C5 mono or polyhydroxy alkyl group, and the addition salts thereof with a physiologically acceptable acid. The invention also relates to the compositions containing such a compound for the dyeing of keratinous fibers and the method for using said compositions.
Claims20
A diaminopyrazole compound of formula:
- 122
- in which R1 denotes a linear or branched C4-C5 n-propyl or alkyl group, or a linear or branched C3-C5 mono- or polyhydroxyalkyl group, and the physiologically acceptable acid salts thereof:
A composition for the oxidation dyeing of keratin fibers, and in particular of human keratin fibers such as the hair, characterized in that it contains, in a medium that is suitable for dyeing, as oxidation base, at least one 4,5-diaminopyrazole of formula (I):
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- in which R1 denotes a linear or branched C4-C5 n-propyl or alkyl group or a linear or branched C3-C5 mono- or polyhydroxyalkyl group, or an addition physiologically acceptable acid salt thereof.
Dependencies are inferred from the claim text.