O-Aminophenol derivatives and colorants containing said compounds
o-Aminophenol derivatives of the general formula (I) or physiologically compatible, water-soluble salts thereof, in which X is oxygen, sulfur or N—R4; R1, R2, R3 may be identical or different and, independently of one another, are hydrogen, a halogen atom, a cyano group, a C 1 -C 4 -alkoxy group, a C 1 -C 6 -alkyl group, a C 1 -C 4 -alkyl thioether group, a mercapto group, a nitro group, a trifluoromethane group, a —C(O)H group, a —C(O)CH 3 group, a —C(O)CF 3 group, an —Si(CH 3 ) 3 group, a C 1 -C 4 -hydroxyalkyl group or an aminomethyl group; R4 is hydrogen, a C 1 -C 6 -alkyl group, a C 1 -C 4 -hydroxy-alkyl group, a phenyl group or an acetyl group; and colorants containing said compounds for keratin fibers.
1. An agent for the oxidative coloring of keratin fibers based on a developer substance-coupler substance combination comprising at least one o-aminophenol derivative of the formula (I) or physiologically compatible, water-soluble salts thereof,
in which
X is oxygen, sulfur or N—R4;
R1, R2, R3 may be identical or different and, independently of one another, are hydrogen, a halogen atom, a cyano group, a C 1 -C 4 -alkoxy group, a C 1 -C 6 -alkyl group, a C 1 -C 4 -alkyl thioether group, a mercapto group, a nitro group, a trifluoromethane group, a —C(O)H group, a —C(O)CH 3 group, a —C(O)CF 3 group, an —Si(CH 3 ) 3 group, a C 1 -C 4 -hydroxyalkyl group or an aminomethyl group; and
R4 is hydrogen, a C 1 -C 6 -alkyl group, a C 1 -C 4 -hydroxyalkyl group, a phenyl group or an acetyl group.
2. The agent as claimed in claim 1 , wherein the o-aminophenol derivative of the formula (I) is present in an amount of from 0.001 to 5 percent by weight.
3. The agent as claimed in claim 1 , wherein the agent has a pH of from 6.5 to 11.5.
4. The agent as claimed in claim 1 , wherein the agent additionally comprises at least one dye from the group consisting of developer substances, coupler substances, direct dyes and other color components.
5. The agent as claimed in claim 1 , wherein the agent is a hair colorant.