2-nitro-p-phenylenediamines azufradas in position 5, a process for their preparation, dyeing compositions containing them and their use in dyeing keratinous fibers.

摘要

The invention relates to compounds nitrobenzene TYPE NITRO-paraphenylenediamines sulphurous 5-position having the formula (I) wherein: - n = 0, 1 or 2; - R1, R2, R3, R4 are identical or different REPRESENTANUN HYDROGEN ATOM, A RADICAL alkyl straight or branched C1-C4, MONOHIDROXIALKILO IN C2-C4, AMINOALKILO IN C1-C4 mono or dialkyl (C1-C4) AMINOALKILO IN C1 C4; - Z represents a radical alkyl straight or branched C1-C4, MONOHIDROXIALKILO IN C1-C4, POLIHIDROXIALKILO IN C2C4, AMINOALKILO IN C1-C4, alkoxy (C1-C4) alkyl in C1-C4, ACETILAMINOALKILO IN C1-C4 Alkyl (C1 C4) AMINOALKILO IN C1-C4 dialkyl (C1-C4) AMINOALKILO C1-C4, TRIALKIL (C1-C4) AMONIOALKILO IN A C1-C4 alkyl halide or C1-C4 IN AN IN C1-C4 ALKILSULFATO BENZYL optionally substituted phenyl optionally substituted alkoxy SULFOALKILO IN C1C4 (C1C4) CARBONILALKILO IN C1C4, AND cosmetically acceptable salts of these compounds. THESE COMPOUNDS ARE PARTICULARLY INTENDED AND DYE LASFIBRAS keratinous HMANO particularly hair. The invention relates also to their process of preparation, compositions containing these compounds dyeing as well as the DYE PROCESS APPLYING THESE composicones.