Patent ID: 7077872

Claim:
Agent for dyeing keratin fibers based on a developer-coupler combination and characterized in that it contains at least one 3-aminophenol derivative of formula (I) or a physiologically compatible, water-soluble salt thereof wherein R1 denotes a group of formula (II) or (III) wherein R2, R3, R4, R5 and R6 independently of each other denote hydrogen, a halogen atom, a cyano group, hydroxyl group, (C 1 –C 4 )-alkoxy group, a phenoxy group, a (C 1 –C 4 )-hydroxyalkoxy group, a (C 1 –C 6 )-alkyl group, a phenyl group, a (C 1 –C 4 )-alkyl thioether group, a mercapto group, a nitro group, an amino group, a (C 1 –C 4 )-alkylamino group, a hydroxy(C 2 –C 4 )alkylamino group, a di(C 1 –C 4 )alkylamino group, a di[hydroxy(C 2 –C 4 )alkyl]amino group, a [dihydroxy (C 3 –C 4 )alkyl]-amino group, a [hydroxy(C 2 –C 4 )alkyl]-(C 1 –C 4 )-alkylamino group, a trifluoromethyl group, a —C(O)H group, a —C(O)CH 3 group, a —C(O)CF 3 group, a —Si(CH 3 ) 3 group, a (C 1 –C 4 )-hydroxyalkyl group, a (C 2 –C 4 )-dihydroxyalkyl group, a (C 1 –C 4 )-ami-noalkyl group or a (C 1 –C 4 )-cyanoalkylgroup, or two adjacent R2 to R6 groups form an —O—CH 2 —O-bridge; X 1 , X 2 , X 3 , X 4 and X 5 independently of each other denote nitrogen or a C—R7 group, C—R8 group, C—R9 group, C—R10 group or C—R11 group, provided that at least one and at the most three of the X 1 to X 5 groups denote nitrogen; and R7, R8, R9, R10 and R11 independently of each other denote hydrogen, a halogen atom, a cyano group, a (C 1 –C 6 )-alkyl group, a (C 1 –C 4 )-alkyl thioether group, a mercapto group, a nitro group, an amino group a (C 1 –C 4 )-alkylamino group, a di(C 1 –C 4 )alkylamino group, a trifluoromethyl group, a —C(O)H group, a —C(O)CH 3 group, a —C(O)CF 3 group, a —Si(CH 3 ) 3 group, a —C(O)—NH 2 group, a (C 1 –C 4 )-hydroxyalkyl group or a (C 2 –C 4 )-dihydroxyalkyl group.