Patent FR-2882520-A1 (FR)
Title: Composition, useful for dyeing keratinous fibers comprises a dye or its mesomer or oligomer in a cosmetic medium
Inventor: LAGRANGE ALAIN
Filed: 2005-02-25
Abstract: Composition (D) for dyeing keratinous fibers comprises a dye (I) or its mesomer or oligomer in a cosmetic medium. Composition (D) for dyeing keratinous fibers comprises a dye (I) of formula ((B1)-(SO 2NR 1R 1a) n) or its mesomer or oligomer in a cosmetic medium. B1 : phenyl xanthenylium compound of formula (Ia); T : H, (thio)alkyl, alkoxy, aminoalkyl, trialkylammonioalkyl, carboxy alkyl, carboxy amino alkyl, amino alkoxy polyalkoxy (where alkoxy contains 1-4C), alkoxycarbonyl, alkoxycarbonylalkyl, alkoxyalkyl, acyl, aryl (preferably phenyl), arylalkyl (preferably benzyl) or heterocycle (containing 5-12 (preferably 5-7) N (optionally saturated) and optionally containing another heteroatom of O, N or S, where the heterocycle is optionally substituted); R 1T; R 1aT or a compound of formula (L 1-N(R 8)-SO 2-(B2)); R 8R 1 or R 1a; L 11-16C divalent hydrocarbon chain (optionally interrupted by heteroatoms of O, S or N and/or group containing at least one heteroatoms e.g. CO and SO 2); B2 : optionally B1; NR 1+R 1a5-12 (preferably 5-7) membered optionally substituted heterocycle (preferably saturated), optionally containing another heteroatom of O, N or S; R 2H, halo (e.g. F, Cl, Br and I), alkoxy, alkyl, sulfonic or carboxy; R 3-R 7, R 9H, halo (e.g. F, Cl, Br and I), alkoxy, alkyl, NH 2 (mono or disubstituted by benzyl, aryl, alkyl e.g. monoaryl amino, diaryl amino, monoalkylamino, (dialkyl) amino (where the amino group is substituted by e.g. alkyl (which forms 5-12 (preferably 5-7) membered heterocycle with N) or optionally substituted by another heteroatom of N, O or S), where the heterocycle can be optionally substituted), one or two substituents of NH 2 with alkyl forming together with a substituent in ortho position of the amino group, mono or disubstituted e.g. monoalkylamino or (dialkyl) amino or 5-6 membered optionally substituted heterocycle (optionally containing heteroatom of O, N or S); n : 1-4 (preferably 1); q : 1-3 (preferably 1); A : mono and/or polyvalent anion; and p : 0-1. Provided that: SO 2NR 1R 1a and/or L 1NR 8SO 2 are attached either directly on the cycles carrying the R 2 substituents to R 9 or through R 2 substituents in R 9; and A, p are present in proportion to neutralize the compound electrically. Independent claims are included for: (1) a process of direct dyeing of keratinous fibers (preferably hair) of human, comprises applying (D), pausing for a period of time and rinsing the fibers; (2) a process of dyeing keratinous fibers (preferably hair) in human, comprising applying (I) and optionally a oxidation base and coupler, where the color is revealed at acid, neutral or alkaline pH, using an oxidizing agent; (3) a device with several compartments comprising (D), optionally an oxidation base and couplers, and a second compartment containing an oxidizing composition; and (4) a device with several compartments comprising a first compartment containing (D), a second compartment containing (D) comprising a oxidation base and optionally a coupler, and a third compartment containing an oxidizing composition. [Image].