Agent to color keratin fibers containing 2-amino-5-methylphenol and m-aminophenoles

Abstract

The present patent application relates to an agent for oxidative coloring of keratin fibers, containing a combination of 2-amino-5-ethylphenol and at least one m-aminophenol of general Formula (I) with Rl = H or C2H4OH; R2 = CH3 or C2H5, and R3 = H or CH3; wherein R2 is not equal to CH3 if Rl and R3 equal H; or physiologically compatible, water-soluble salts thereof.

Description

Invention field The present invention relates to an agent for the oxidative coloring of keratin fibers, especially human hair, which comprises a combination of 2-amino-5-methylphenol and certain meta-aminophenols of the general formula (I) as a coloring component. Background of the invention In the field of keratin fiber dyeing, especially hair dyeing, oxidative dyes are of significant importance. In the presence of a suitable oxidant, dyeing can be achieved through the reaction of certain developer substances with certain coupling agents. Specifically, the following compounds can be used as developer materials: 2,5-diaminotoluene, 2,5-diaminophenylethanol, p-aminophenol, 1,4-diaminobenzene and 4,5-diamino -1-(2-hydroxyethyl)pyrazole. However, for example, resorcinol, 2-methylresorcinol, 1-naphthol, 3-aminophenol, m-phenylenediamine, 2-amino-4-(2'-hydroxyethyl)aminoanisole , 1,3-diamino-4-(2'-hydroxyethoxy)benzene and 2,4-diamino-5-fluorotoluene can be mentioned as coupling agent...

AI Technical Summary

Problems solved by technology

However, it does not fully meet the requirements especially for the above-mentioned uniform uptake of the dye from the hair root all the way to the tip

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