Combinations of dye precursors

摘要

Material for dyeing keratin fibres, especially human hair, contains (in addition to a p-phenylenediamine developer component, a resorcinol-type coupler and cosmetically-acceptable carrier components), an optionally 4-substituted 5-amino-2-methylphenol derivative and an optionally 4-substituted 2-hydroxy- or 2-amino-5,6-diaminopyrimidine derivative. Material for dyeing keratin fibres, especially human hair, contains (in a cosmetically-acceptable vehicle), (a) developer component(s) selected from p-phenylenediamine and its derivatives, (b) coupler component(s) selected from resorcinol and its derivatives, (c) substituted m-amino-phenol derivative(s) of formula (I); and (d) pyrimidine derivative(s) of formula (II). R 1H, halogen or 1-4C alkoxy; R 22-4C monohydroxyalkyl or H, with the proviso that at least one of the groups R 1 and R 2 is not H; R 3hydroxyl or amino (optionally with one or two 1-4C alkyl groups on the N); R 4H, OH or amino. An independent claim is included for a method for dyeing keratin fibres by applying the above material to the fibres, leaving it to act for a certain time and then washing it off. [Image].