Patent FR-2807654-A1 (FR)
Title: Composition for dyeing hair comprises a diaminopyridine derivative as the coupler, an oxidation colorant precursor and a cationic or amphoteric polymer thickener
Inventor: ANDOUSSET MARIE PASCALE
IPC: D06P3/08
Filed: 2000-04-12
Abstract: A composition for the oxidation dyeing of keratinic fibers, especially human hair, comprises a derivative of 3,5-diaminopyridine as a coupler, at least one oxidation colorant precursor and at least one cationic or amphoteric polymer thickener.  A composition for the oxidation dyeing of keratinic fibers, especially human hair, comprises a derivative of 3,5-diaminopyridine as a coupler, at least one oxidation colorant precursor and at least one cationic or amphoteric polymer thickener. The 3,5-diaminopyridine derivative is of formula (A).   R1, R2  = 1-4C alkyl or monohydroxyalkyl, or 2-4C polyhydroxyalkyl; and R3  = H, 1-4C alkyl or monohydroxyalkyl, or 2-4C polyhydroxyalkyl. The cationic or amphoteric polymers are:  (i) methacryloyloxyethyltrimethylammonium halide homo- and copolymers, (ii) quat. polyammonium compounds comprising repeat units of formula (I)   p  = 1-6 ; D  = a bond or  -(CH2)r-CO-; r  = 4, 7; X<->  = anion or Formula (II) R1, R2, R3, R4  = 1-4C alkyl or hydroxyalkyl; n, s  = 2-20. (iii) vinylpyrrolidone copolymers with cationic units, (iv) aminated silicones,  (v) homopolymers of dimethyldiallylammonium halide and copolymers of it with acrylamide and acrylic acid,  (vi) copolymers of (meth)acrylic, maleic or alpha-chloracrylic acid and dialkylaminoalkyl(meth)acrylate or dialkylaminoalkyl(meth)acrylamide, (vii) sodium acrylate and acrylamidopropyltrimethylammonium chloride copolymers,  (ix) octylacrylamide/acrylates/butylaminoethyl methacrylate copolymer,  (x) polymers comprising zwitterionic units of formula (III)   R9  = (meth)acrylate, (meth)acrylamide; y, z  = 1-3; R5, R6  = H, Me, Et, Pr; R7, R8  = H, alkyl such that the sum of their carbon atoms does not exceed 10. (xi) derivatives of chitosan comprising monomer units of formulae (IV), (V) and (VI) R10  = R13-C(R11)-(O)q-C(R12)-H; q  = 0,1; when q  = 0, R11, R12, R13 = H, methyl, hydroxyl, acetoxy, amino, monoalkoylamine or dialkoylamine optionally separated by one or more nitrogen atoms and/or optionally substituted by one or more amine, hydroxyl, carboxyl, alkoylthio, sulfonic groups, alkoylthio bearing amino on the alkoyl group and at least one is H, and where q = 1, R11, R12, R13 = H. (IV) is present at 0-30%, (V) at 5-50% and (VI) at 30-90%. (xii) polymers of formula (VII)   R18  = H, CH3O, CH3CH2O, phenyl; R14, R15  = H, 1-6C alkyl; R16  = 1-6C alkyl, R17-N(R15)2; R17  = -CH2-CH2-, -CH2-CH2-CH2-, -CH2-CH(CH3)-. (xiii) alkyl(1-5C)vinylether/maleic anhydride partially semiamidified with an N,N-dialkylaminoalkylamine or semiesterified with an N,N-dialkanolamine.  Independent claims are included for:  (1) a dyeing procedure consisting of applying the composition and revealing the color at an acid, neutral or alkaline pH by means of an oxidizing composition, mixed at the moment of use and applied sequentially without intermediate rinsing; and (2) a kit containing several compartments, in one of which is contained the 3,5-diaminopyridine and in another the oxidizing agent, with the cationic or amphoteric polymer being in either of the compartments or contained in a separate compartment.