Patent FR-2788768-A1 (FR)
Title: New cationic acyl aminophenol(s) useful as couplers in combination with oxidation bases, in dyeing compositions for keratin fibers, especially hair
IPC: C07C233/24
Filed: 1999-01-21
Abstract: Novel cationic 2-acyl aminophenols and their respective acid-addition salts. Cationic 2-acyl aminophenols of formula (I) are new: (W1)-(B1)k-(A)l-(B2)m-(W2) (I). A = cationic group (D); B1, B2 = group B as defined below;  k, l, m = 0, 1; (k+l+m) does not equal 0; W1, W2 = group of formula (II); R1 = H, group (Z), 1-15C (non)branched optionally 3-7 membered (aromatic) ring, (un)saturated with double or triple bonds, optionally containing N, O or S heteroatoms, or SO2 group and, substituted with halogen atom(s); R2 = H, group (Z), 1-20C (non)branched radical (the branches may form 3-7C ring), optionally unsaturated with double bonds and/or triple bond(s) (double bonds optionally leading to aromatic groups), and optionally N, O or S heteroatom-substituted, or substituted with SO2 group, or halogen atom(s); R3-R5 = H, group (Z), 1-20C (non)branched radical (the branches may form a 3-7C ring), (un)saturated with double and/or triple bond(s) (double bonds optionally leading to aromatic groups), and contain heteroatoms N, O or S atoms, or SO2 group, or halogen atom(s); Y = H or halogen, or -OR6, -SR6, or -NH-SO2R6; R6 = (un)branched 1-6C alkyl, whose branches may form a 3-6C ring, (un)substituted with a halogen, hydroxy, 1-4C alkoxy, amino and amino(1-4C) alkyl; or phenyl optionally mono- or di-substituted with (1-4C) alkyl, trifluoromethyl, carboxy, (1-4C)alkoxy carbonyl, halogen, hydroxy, (1-4C) alkoxy, amino and aminoalkyl radicals; or a benzyl radical; Z = cationic group of formula (IV); -(B)n-D (IV) B = 2-15C (un)branched (optionally 3-7C cyclic) (un)saturated radical with double and/or triple bond(s) (double bonds optionally leading to aromatic groups), substituted with N, O or S atoms, SO2 group, halogen atom(s); one or more of (Z), with exclusion of peroxide and diazo, nitro and nitroso radicals; D  = cationic groups of formula (V) or (VI); p, n = 0 or 1; (R10-N+(R9)(R7)-R8).(X<->) (VI) Z1-Z4 = O, S, or N (or C atom) optionally substituted R11; Z5 = N or C optionally substituted with R11; or = Z6; R11 = H, Z, or 1-10C (non)branched radical (un)saturated with double and/or triple bond(s), optionally N, O or S substituted, or SO2, or halogen substituted; provided that is not bearing peroxide, diazo, nitro or nitroso radicals; Z6 = R11, does not equal H; R7-R10 = as R11; or form with N<+>, saturated 5-7 membered ring optionally substituted with R11, or NR11, or O, or S atom; X = organic or mineral anion. The full definitions are given in DEFINITIONS field. Independent claims are also included for: (1) A composition (A) for oxidation-dyeing of keratin fibres, containing at least one coupler (and/or its acid addition salt) 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.  (2) A process of oxidation-dyeing of keratin fibers (especially of human hair), comprising application of at least one composition as claimed, 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.  (3) A hair dyeing kit with separate compartments of which the first contains dye composition A as claimed and the second oxidant composition B.