| abstract |
Oxidation hair dye based on 4-amino-2-aminomethylphenols of the general formula (I) wherein R 'and R 2 independently of one another are hydrogen, alkyl, hydroxyalkyl, aminoalkyl, mono- or dialkylaminoalkyl, acylaminoalkyl, aryl- or alkylsulfonylaminoalkyl, carbamidoalkyl, acyl, aryl- or alkylsulfonyl or carbamoyl - the alkyl radical in each case having 1 to 4 carbon atoms or a heterocyclic, non-aromatic five- or six-membered ring, which may additionally have an oxo group, is formed by R 'and R 2 , or their salts as developer substances.n n n The application also relates to the new developer substances of the general formula (XII) where R a is hydrogen, alkyl, hydroxyalkyl, aminoalkyl, mono- or dialkylaminoalkyl, acylaminoalkyl, aryl- or alkylsulfonylaminoalkyl, carbamoyl, carbamidoalkyl, acyl, aryl- or alkylsulfonyl - the alkyl radicals each having 1 to 4 carbon atoms - and R b is the same Aminoalkyl, mono- or dialkylaminoalkyl, acylaminoalkyl, aryl- or alkylsulfonylaminoalkyl, carbamoyl, carbamidoalkyl, acyl, aryl- or alkylsulfonyl - the alkyl radicals each having 1 to 4 carbon atoms.n n n The developer substances of the formula (1) have, with the same good dyeing behavior, physiologically better properties than the p-aminophenol which has hitherto been used mainly for dyeing in the red region. |