| abstract |
Invention Patent: <B> "P-AMINOPHENOL DERIVATIVES AND THEIR USE" <D>. Compounds of the general formula (I), in which A, B, C, and D are independent of each other, represent an -OH- or -NHR- group, in which R represents a hydrogen atom or a C ~ 1-4 radical ~ -alkyl, with the proviso that either A or B and C or D represent a hydroxy group, X represents oxygen, sulfur, a sulfoxy group or a sulfoxyl group, R¹ and R² represent, independently of each other, hydrogen, fluorine , chlorine, a C ~ 1-4 ~ -alkyl or -hydroxyalkyl group or a C ~ 2-4 ~ -dihydroxyalkyl group, preferably a C ~ 2 ~ dihydroxy-alkyl group and the physiologically tolerable salts of these compounds they lend themselves markedly with developer components in oxidation dyeing agents. |