| 摘要 |
Ready to use compositions for dyeing keratin fibers, especially human hair, containing a direct cationic dye (I; II; III and/or III') and a direct nitrated benzene dye, preferably of formula (IV). The cationic dyes have the following formulae: D = N or -CH; R1 and R2 = H, 1-4C alkyl optionally substituted by CN, OH, NH2, 4'-aminophenyl, or it links with a C atom on the benzene ring to form a heterocyclic that may contain additional O or N and which may be substituted by one or more 1-4C alkyl groups; R3 and R'3 = H, halogen, CN, 1-4C alkoxy, or acetyloxy; X- = an anion, preferably Cl, methyl sulfate or acetate; A = any one of 19 given mono- or bicyclic N+ containing heterocycles; R6 = H or 1-4C alkyl; R7 = H, alkyl optionally substituted by CN, NH2, 4'-aminophenyl, or forms with R6 a heterocycle that may contain additional O or N and may be substituted by 1-4C alkyl; R8 and R9 = H, halogen, 1-4C alkyl or alkoxy, or CN; B = any one of 6 given mono- and bicyclic N+ containing heterocycles; R13 = H, 1-4C alkoxy, halogen or amino; R14 = H, 1-4C alkyl or it links with a C atom on the benzene ring to form a heterocycle that may contain ring oxygen and which may be substituted by one or more 1-4C alkyl groups; R15 = H or halogen; R16 and R17 = H or 1-4C alkyl; D1 and D2 = N or CH; m = 0 or 1, such that when R13 is an unsubstituted amino, then D1 and D2 are both CH and m is zero; E = any one of 9 given N+ containing mono- and bicyclic heterocycles. The preferred direct nitrated benzene dye is of formula (IV). R18 = amino that may be mono- or di-substituted by 1-4C alkyl, 1-4C monohydroxyalkyl, 2-4C polyhydroxy alkyl, amino alkyl, mono- and di-alkyl amino alkyl, ureidoalkyl, or aryl optionally substituted by one of more OH, COOH, amino or dialkylamino groups; R19 = H, NH2, OH, 1-4C alkyl or alkoxy, 1-4C monohydroxy alkyl or alkoxy, 2-4C polyhydroxy alkyl or alkoxy, 1-4C aminoalkoxy, or amino, mono- or di-substituted by 1-4C alkyl, 1-4C monohydroxyalkyl, 2-4C polyhydroxy alkyl, 1-4C amino alkyl, mono- and di-1-4C alkyl amino 1-4C alkyl, 1-4C ureido, or aryl optionally substituted by one or more OH, COOH, amino or dialkylamino groups; R20 = H, halogen, 1-4C alkyl, or nitro group The compositions may further contain: (1) one or more oxidation bases such as p-phenylene diamines or p-amino phenols, (2) one or more couplers such as m-phenylene diamines or m-amino phenols, (3) oxidizing agents such as hydrogen peroxide or urea peroxide, (4) and enzymes such as peroxidases and two electron oxido-reductases. The cationic dye preferably comprises 0.001 - 10%, especially 0.05 - 5% of the composition and the nitrated benzene dye comprises 0.0005 - 15%, especially 0.005 - 10% of the composition. Two part kits comprising a first part containing both types of dye and an oxidation base and/or coupler, and the second part containing an oxidizing agent, are also claimed. |
