Corantes contendo derivados de diamino-benzeno bem como derivados de diamino-benzeno

Patente de Invenção: "CORANTES CONTENDO DERIVADOS DE DIAMINO-BENZENO, BEM COMO DERIVADOS DE DIAMINO-BENZENO". Derivados de p-diaminobenzeno da fórmula geral (I) ou seus sais solúveis em água, fisiologicamente compatíveis, bem como os agentes contendo esses compostos, para o tingimento oxidativo de fibras. Oxidation hair dye composition based on a developer-coupler combination contains a 2-furyl- or 2-thienyl-1,4-phenylenediamine derivative (I) as developer. The composition contains at least one 2-furyl- or 2-thienyl-1,4-phenylenediamine derivative of formula (I) as developer. X = O or S; R1-R4 = H, 1-6C alkyl, 1-4C hydroxyalkyl, 2-4C dihydroxyalkyl or (1-4C)alkoxy(1-2C)alkyl, at least one being H; R5 = H, halogen, 1-4C alkyl, 1-4C hydroxyalkyl or 1-4C alkoxy; R6, R8 = H, OH, halogen, CN, 1-4C alkoxy, 1-6C alkyl, 1-4C alkylthio, SH, NO2, NH2, alkylamino, dialkylamino, CHO, COMe, COCF3, SiMe3, 1-4C hydroxyalkyl, 3-4C dihydroxyalkyl, CH=CR10, (CH2)pCOOR11, (CH2)pR12, C(R13)=NR14 or CH(R16)NR17R18; p = 1-4; R7 = H, halogen, 1-5C alkyl or CHO; R8 = H, 1-6C alkyl, 1-4C hydroxyalkyl, phenyl or acetyl; R10 = H, OH, NO2, NH2, COOR11 or COMe; R11, R13, R16 = H or 1-4C alkyl; R14, R17, R18 = H, OH, 1-4C alkyl, 1-4C hydroxyalkyl, 3-4C dihydroxyalkyl, phenyl, aminophenyl or hydroxyphenyl.