| abstract |
PCT No. PCT/FR92/00524 Sec. 371 Date Dec. 13, 1993 Sec. 102(e) Date Dec. 13, 1993 PCT Filed Jun. 10, 1992 PCT Pub. No. WO92/22525 PCT Pub. Date Dec. 23, 1992.Composition and process for dyeing keratinous fibers using sulphurous metaaminophenols of formula (I): <IMAGE> (I) in which Z is a C1-C18 alkyl radical, an aryl radical, an aralkyl in which the alkyl radical has from 1 to 5 carbon atoms, a C2-C6 monohydroxyalkyl radical, a C2-C6 polyhydroxyalkyl radical, an aminoalkyl radical of formula (I') <IMAGE> (I') in which n is an integer of between 1 and 6 inclusive, R1 and R2, which may be the same or different, are a hydrogen atom or a C1-C4 alkyl, a C1-C4 hydroxyalkyl, a C2-C6 acyl radical; R is a hydrogen atom, a C1-C6 alkyl radical, a C1-C6 monohydroxyalkyl or a C2-C6 polyhydroxyalkyl radical, a C1-C6 monocarbamylalkyl, a C1-C6 dicarbamylalkyl, a C1-C4 aminoalkyl, a C1-C6 acyl, a C2-C6 carbalkoxy, a carbamyl or a carbamyl C1-C6 monoalkyl, R' is a hydrogen atom, a C1-C4 alkyl radical, a C1-C4 thioalkyl or a C1-C4 alkoxy, as well as the corresponding acid salts of said sulphurous metaaminophenols. |