Patent FR-2788770-A1 (FR)
Title: Cationic 2-sulfonyl aminophenols for use as couplers in compositions for oxidation-dyeing of keratin fibers, especially hair, contain at least one cationic group
Inventor: VIDAL LAURENT
IPC: A61K8/00
Filed: 1999-01-21
Abstract: Cationic 2-sulfonyl aminophenols are new.  Cationic 2-sulfonyl aminophenols have formula (I). R1 = H, Z, 1-15C linear or branched radical (the branches may form one or more 3-7C cycles) which may contain one or more double bonds and/or one or more triple bonds (optionally aromatic groups), and may have one or more C atoms replaced by N, O or S, or SO2 and, independently from each other, substituted with one or more halogen atoms; R2 = H, Z, 1-20C linear or branched radical (the branches may form one or more 3-7C cycles) which may contain one or more double bonds and/or one or more triple bonds (double bonds optionally leading to aromatic groups), and may have one or more C atoms replaced by N, O or S, or SO2, and, independently from each other, substituted with one or more halogens; R3-R5 = H, Z, 1-20C linear or branched radical (the branches may form one or more 3-7C cycles) which may contain one or more double bonds and/or one or more triple bonds (double bonds optionally leading to aromatic groups), and may have one or more C atoms replaced by N, O or S, or SO2, and, independently from each other, substituted with one or more halogens;  Y = H or halogen, or -OR6, -SR6, or -NH-SO2R6; R6 = linear or branched (1-6C) alkyl whose branches may form one or more 3-6C cycles, optionally substituted with one or more of halogen, hydroxy, (1-4C) alkoxy, amino and amino(1-4C) alkyl; or phenyl optionally substituted with one or two radicals chosen from (1-4C) alkyl, trifluoromethyl, carboxy, (1-4C)alkoxy carbonyl, halogen, hydroxy, (1-4C) alkoxy, amino and aminoalkyl radicals; or benzyl; Z = cationic group of formula (II); B = 1-15C linear or branched radical (the branches may form one or more 3-7C cycles) which may contain one or more double bonds and/or one or more triple bonds (double bonds optionally leading to aromatic groups), and may have one or more C atoms replaced by N, O or S atoms, or SO2 group, and, independently from each other, substituted with one or more halogen atoms, or one or more of groups Z, with exclusion of peroxide and diazo, nitro and nitroso radicals;  D = cationic groups of formula (III) and (IV); p and n = 0 or 1; Z1-Z4 = O, S, or N (or C) optionally substituted with one or two radicals (same or different) R11;  Z5 = N or C optionally substituted with R11;  Z6 = as for R11, however it is not H;  R11 = H, Z, or 1-10C linear or branched radical which may contain one or more double bonds and/or one or more triple bonds, and may have one or more C atoms replaced by N, O or S, or SO2, and, independently from each other, substituted with one or more halogens, and is not bearing peroxide, nor diazo, nitro or nitroso radicals;  R7-R10 = same or different, may be the same as for R11; or R7-R9 may form with quaternary N atom to which they are attached one or more saturated 5-7 link cycles, with each link independently representing C atom optionally substituted with one or more same or different R11, or N atom optionally substituted with R11, or O, or S ; X = organic or mineral anion. Independent claims are included for: (1) use of compounds of formula (I) as coupler(s) for oxidation-dyeing of keratin fibers; (2) composition A for oxidation-dyeing of keratin fibres, containing 0.0005-12 wt.% of at least one coupler (and/or its acid addition salt) selected from compounds (I),  and also 0.0005-12 wt.% of one or more oxidation bases, and 0.0001-10 wt.% of one or more additional couplers and/or one or more direct colorants; (3) a process of oxidation-dyeing of keratin fibers (especially of human hair), comprising application of at least one composition, and development of color (at acidic, neutral or alkaline pH) with the aid of oxidant-agent added at the application stage or present in oxidant composition B applied simultaneously or in sequence, separately from composition A; and (4) a dyeing kit with separate compartments of which the first contains dye composition A as claimed and the second oxidant composition B.