| abstract |
Use of sulphurous metaaminophenols of formula (I) in which Z is a C1-C18 alkyl radical, an aryl radical, an aralkyl in which the alkyl radical has from 1 to 6 carbon atoms, a C1-C6 monohydroxyalkyl radical, a C2-C6 polyhydroxyalkyl radical, an aminoalkyl radical of formula (I') in which n is an integer of between 1 and 6 inclusive, R1 and R2, the same or different, are a hydrogen atom or a C1-C4 alkyl radical, a C1-C4 hydroxyalkyl, a C2-C6 acyl; R is a hydrogen atom, a C1-C6 alkyl radical, a C1-C6 monohydroxyalkyl or a C2-C6 polyhydroxyalky radical, a C1-C6 monocarbamylalkyl, a C1-C6 dicarbamylalkyl, a C1-C6 aminoalkyl, a C1-C6 acyl, a C2-C6 carbalkoxy, a carbamyl ou a carbamyl C1-C6 monoalkyl, R' is a hydrogen atom, a C1-C4 alkyl radical, a C1-C4 thioalkyl or a C1-C4 alkoxy. The invention also concerns the corresponding acid salts of said sulphurous metaaminophenols for use in dyeing keratinic fibers such as hair. |