| abstract |
Oxidation colorants for dyeing keratinic fibers, containing developer components and possibly coupling components in a water-containing vehicle, having as a developer component a pyrimidine derivative, with 2-4 amino substituents and 0-2 hydroxy substituents on the pyrimidene ring and, as an alkalisation agent, an amino acid or oligopeptide with at least one amino group and at least one -COOH- or -SO3H- group, the 2.5 % solution of which in water has a pH of over 9,0, give extraordinarily brillant colourings. In particular, a large number of hues can be obtained with practically pH-neutral formulations without the additional use of direct-drawing colorants. |