| 摘要 |
<p>A composition for dyeing keratinous fibers, particularly human hair, comprises a primary base selected from paraphenylene diamine and paratoluene diamine, one or more secondary base selected from N,N-bis-( beta -hydroxyethyl)paraphenylene diamine, pyrazolo-(1.5-a)-pyrimidines and para-aminophenols and at least one pyrazolo-(3,2-c)-1,2,4-triazoles coupler (I). A composition for dyeing keratinous fibers, particularly human hair, comprises: (a) a primary base selected from paraphenylene diamine and paratoluene diamine; (b) one or more secondary base selected from N,N-bis-( beta -hydroxyethyl)paraphenylene diamine, pyrazolo-(1.5-a)-pyrimidines and para-aminophenols; (c) at least one pyrazolo-(3,2-c)-1,2,4-triazoles coupler represented by the formula (I); R1, R3 = hydrogen, halogen, nitro, cyano, alkoxy, aryloxy, amino, alkylamino, acylamino, carbamoyl, sulfonamido, sulfamoyl, imido, alkylthio, arylthio, aryl, alkoxycarbonyl, an optionally branched 1-20C alkyl; aryl or a 5-6 membered heterocycle featuring a nitrogen, oxygen and/or sulfur atom. The alkyl, aryl and heterocyclic groups can be substituted in one or two positions by radicals selected from halogen, nitro, cyano, alkoxy, aryloxy, amino, alkylamino, acylamino, carbamoyl, sulfonamido, sulfamoyl, imido, alkylthio, arylthio, aryl, alkoxycarbonyl and acyl; R2 = hydrogen, halogen, acetylamido, alkoxy, aryloxy, acyloxy, arylthio, alkylthio, heteroarylthio, heteroaryloxy, thiocyano, N,N-diethylthiocarbonylthio, dodecyloxythio, carbonylthio, benzenesulfonamido, N-ethyltoluene sulfonamido, pentafluorobutanamido, 2,3,4,5,6-pentafluorobenzamido, p-cyanophenylureido, N,N-diethyl-sulfamoylamido, pyrazolyl, imidazolyl, triazolyl, tetrazolyl, benzimidazolyl, 1-benzyl-5-ethoxy-3-hydantoinyl, 1-benzyl-3-hydantoinyl, 5,5-dimethyl-2,4-dioxo-3-oxazolidinyl, 2-oxy,-1,2-dihydro-1-pyridinyl, alkylamido, arylamido or -N(Ra)(Rb); Ra, Rb = 1-4C (hydroxy)alkyl, carboxyl or alkoxycarboxyl. Salts of (a), (b) and/or (c) may be used.</p> |
