Patent ID: 6371994
Filing Date: 2002-04-16
Classification: A61K,A61Q

Abstract:
A composition for dyeing keratin fibers comprising:(i) at least one cationic direct dye of formula (I) below: â€ƒin which: the symbol A represents a group chosen from structures A1 to A3 below: â€ƒin which structures A1 to A3, R1 is chosen from C1-C4 alkyl radicals and a phenyl radical having a substituent chosen from C1-C4 alkyl radicals and halogen atoms chosen from chlorine, bromine, iodine and fluorine; R2 is chosen from C1-C4 alkyl radicals and a phenyl radical; R3 and R4, which may be identical or different, are chosen from C1-C4 alkyl radicals and a phenyl radical and, in the case of structure A1, can together form a substituted benzene ring, and in the case of structure A2, can together form a benzene ring optionally having at least one substituent chosen from C1-C4 alkyl, C1-C4 alkoxy and NO2 radicals; R3 can also denote a hydrogen atom; Z is chosen from an oxygen atom, a sulphur atom, and â€”NR2 groups; M is chosen from â€”CH, â€”CR, where R is chosen from C1-C4 alkyl radicals, and â€”N+R5(Xâˆ’)r groups; K is chosen from â€”CH, â€”CR, where R is chosen from C1-C4 alkyl radicals, and â€”N+R5(Xâˆ’)r groups; P is chosen from â€”CH, â€”CR, where R is chosen from C1-C4 alkyl radicals, and â€”N+R5(Xâˆ’)r groups; r denotes 0 or 1; R5 is chosen from an atom Oâˆ’, C1-C4 alkoxy radicals and C1-C4 alkyl radicals; R6 and R7, which may be identical or different, are chosen from a hydrogen atom, halogen atoms chosen from chlorine, bromine, iodine and fluorine, C1-C4 alkyl radicals, C1-C4 alkoxy radicals and an â€”NO2 radical; Xâˆ’is an anion; â€ƒwith the proviso that, if R4 is a C1-C4 alkyl radical and Z is a sulphur atom, R3 is not a hydrogen atom; if R5 is Oâˆ’, then r is zero; if K or P or M is â€”N+â€”C1-C4 -alkyl Xâˆ’, then R6 or R7 is other than a hydrogen atom; if K is â€”N+R5(Xâˆ’)r, then M&boxH;P and is â€”CH or â€”CR; if M is â€”N+R5(Xâˆ’)r, then K&boxH;P and is â€”CH or â€”CR; if P is â€”N+R5(Xâˆ’)r, then K=M and is â€”CH or â€”CR; at least one of K, M, and P is â€”N+R5(Xâˆ’)r; if Z is â€”NR2 and R2 is a C1-C4 alkyl radical, then at least one of the radicals R1, R3 or R4 of structure A2 is other than a C1-C4 alkyl radical; the symbol B represents: (a) a group of structure B1 below: â€ƒin which structure B1, R8 is chosen from a hydrogen atom, halogen atoms chosen from chlorine, bromine, iodine and fluorine, C1-C4 alkyl radicals, C1-C4 alkoxy radicals, a radical â€”OH, a radical â€”NO2, â€”NHR11 radicals, â€”NR12R13 radicals, and â€”NHCO(C1-C4)alkyl radicals or forms, with R9, a 5- or 6-membered ring which may contain at least one hetero atom chosen from nitrogen, oxygen and sulphur; R9 is chosen from a hydrogen atom, halogen atoms chosen from chlorine, bromine, iodine and fluorine, C1-C4 alkyl radicals, and C1-C4 alkoxy radicals, or forms, with R10 or R11, a 5- or 6-membered ring which may contain at least one hetero atom chosen from nitrogen, oxygen and sulphur; R10 is chosen from a hydrogen atom, an â€”OH radical, â€”NHR11 radicals and â€”NR12R13 radicals; R11 is chosen from a hydrogen atom, C1-C4 alkyl radicals, C1-C4 monohydroxyalkyl radicals, C2-C4 polyhydroxyalkyl radicals and a phenyl radical; R12 and R13, which may be identical or different, are chosen from C1-C4 alkyl radicals, C1-C4 monohydroxyalkyl radicals and C2-C4 polyhydroxyalkyl radicals; or (b) a 5- or 6-membered nitrogenous heterocyclic group which can contain at least one other hetero atom and/or at least one carbonyl group and which can have at least one substituent chosen from C1-C4 alkyl, amino and phenyl radicals, and (ii) at least one compound chosen from glycerol, polyols containing at least 4 carbon atoms, C1-C8 aliphatic ethers of C3-C9 polyols, and C6-C8 aromatic ethers of C2-C9 polyols.