Patent FR-2788769-A1 (FR)
Title: Cationic couplers for use in compositions for oxidation-dyeing of keratin fibers, especially hair, are derived from naphth-1-ol and contain at least one cationic group
Inventor: VANDENBOSSCHE JEAN JACQUES
IPC: C07D241/04
Filed: 1999-01-21
Abstract: Cationic couplers are new.  Cationic couplers (claimed together with their acid-addition salts) have formula (I); R1 = -NR4(C=O)R5, -NR6SO2R7 and -(C=O)NR6R8; R2, R3  = H, halogen atom, group 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 (optionally 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; Y = H or halogen atom, or -OR9, -SR9, or -NH-SO2R9; R9 = linear or branched (1-6C) alkyl radical 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 radicals; or phenyl radical, 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 radical; R4, R6 and R8 = H, group 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 atoms, or SO2 group, and, independently from each other, substituted with one or more halogen atoms;  R5 and R7  = H, group 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 (optionally 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;  Z  = cationic group of formula (II);  n  = 0-1;  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 (optionally 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;  D  = cationic groups of formula (III) and (IV); p and q  = 0-1;  Z1-Z4 = O, S, or N atom (or C atom) optionally substituted with one or two radicals R14; Z5  = N or C optionally substituted with one or two radicals (same or different) R14;  Z6  = same as indicated for R14, but not H atom; R14 = H, Z, or 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 atoms, or SO2 group, and, substituted with one or more halogen atoms, and bearing no peroxide, nor diazo, nitro or nitroso radicals; X = organic or mineral anion. The full definitions are given in DEFINITIONS (Full Definitions) field. Independent claims are also included for: (1) the use of compounds (I) as couplers in oxidation-dyeing of keratin fibers;  (2) composition A for oxidation-dyeing of keratin fibres, containing at least one coupler selected from compounds (I) as claimed, in amount 0.0005-12 wt.%, 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) process of oxidation-dyeing of keratin fibers (especially of human hair), comprising application of composition as claimed, for a period necessary to develop desired color, which is produced (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;  (4) dyeing kit with separate compartments of which the first contains dye composition A as claimed and the second oxidant composition B.