| 摘要 |
New dye composition (A) for keratinous fibres, particularly human hair, comprises a 4,5-diimino-pyrazoline compound of formula (I) and/or its tautomer which is a 4-ylideneamino-5-amino-pyrazole compound of formula (II). R1, R3 = H; 1-6C alkyl; 2-4C hydroxyalkyl; 2-4C aminoalkyl; phenyl optionally substituted by halo, 1-4C alkyl, 1-4C alkoxy, nitro, CF3, amino, or 1-4C alkylamino; benzyl optionally substituted by halo, 1-4C alkyl, 1-4C alkoxy, methylenedioxy or amino; or a group of formula (CH2)mD(CHX)nY (IV); m, n=1-3; D = O or NH; X = H or CH3; Y = CH3 or OR4; R4 = H, Me or Et; R3 may also be amino; R2 = H; 1-6C alkyl; 1-4C hydroxyalkyl; 1-4C aminoalkyl; 1-2C alkylthio; 1-5C alkyloxy; CF3; CN; carboxyl; phenyl optionally substituted by halo, 1-4C alkyl, 1-4C alkoxy, nitro, CF3, amino, or 1-4C alkylamino; benzyl optionally substituted by halo, 1-4C alkyl, 1-4C alkoxy, nitro, CF3, amino, or 1-4C alkylamino; a heterocycle chosen from thiophene, furan or pyridine; or a group of formula (CH2)pO(CH2)qOR5; p, q=1-3; R5 = H or CH3; A = a group of formula (a); B = a group of formula (b); Z1 = OH; 1-4C alkoxy; amino; acetamido; 1-4C alkylamino; 1-4C hydroxyalkylamino; 1-4C aminoalkylamino; NR10R11; R10, R11 = 1-4C alkyl, 2-4C hydroxyalkyl or 2-4C aminoalkyl; R6-R9 = H; 1-4C alkyl; 1-4C alkoxy; 1-4C alkylthio; amino; 1-4C alkylamino; carbamoyl-methylamino; 2-4C hydroxyalkyl; 2-4C monohydroxy-alkoxy; 2-4C dihydroxyalkoxy; 1-2C carboxyalkoxy; Cl; Br; F; 1-2C trifluoroalkyl; NR10R11; or a group of formula (IV); Z2 = O or NR; R = H, acetyl, 1-4C alkyl, 1-4C hydroxyalkyl or 1-4C amino alkyl. Also claimed is a method of dying keratinous fibres, particularly human hair, comprising the application of (A) and then either: (a) drying the fibres without rinsing; or (b) waiting for 3-60 minutes before rinsing, optionally washing, and then drying the fibres. Also claimed is a method of bleaching keratinous fibres, particularly human hair, comprising the application of (A) together with an oxidising agent. Also claimed is a device for bleaching keratinous fibres, particularly human hair, comprising two compartments, one containing (A), the other an oxidising agent. (I) and (II) are new provided that: (i) when R1 = Ph, R2 Me and R3 = H, then A is not 4-dimethylaminophenyl or 4-diethylaminophenyl; and (ii) when R1 = R2 = R3 = H, then A is not para-(2-ethyl-5-aminophenol) or para-(1,3-diaminobenzene). |
