Patent ID: 7056349

Claim:
An agent for dyeing fibers (A) which is prepared by mixing two components (A1) and (A2), characterized in that component (A1) contains at least one quinonimine derivative of formula (I) and component (A2) contains at least one compound selected from the group consisting of aromatic amines and phenols: wherein in formula (I) X denotes oxygen or an NR group (in which R stands for an optionally substituted (C 1 –C 6 )-alkyl group or an optionally substituted aromatic isocyclic or heterocyclic ring); Y denotes a (C 1 –C 6 )-alkylsulfonyl group, arylsulfonyl group or acetyl group; R1, R2, R3 and R4 can be equal or different and independently of each other denote hydrogen, a halogen atom, a (C 1 –C 8 )-alkyl group, a trifluoromethyl group, a halogen-substituted (C 1 –C 6 )-alkyl group, a (C 1 –C 6 )-hydroxyalkyl group, a (C 2 –C 6 )-polyhydroxyalkyl group, a (C 1 –C 6 )-aminoalkyl group, a (C 1 –C 6 )-alkoxy group, a (C 1 –C 6 )-hydroxyalkoxy group, a (C 1 –C 6 )-aminoalkyl group, a (C 1 –C 6 )-alkoxy-(C 1 –C 6 )-alkyl group, a (C 1 –C 6 )-alkoxy-(C 1 –C 6 )-alkoxy group, a (C 1 –C 6 )-hydroxyalkyl-(C 1 –C 6 )-aminoalkyl group, a nitro group, a cyano group, a carboxyl group, a carboxylate ester group or an optionally substituted aromatic (isocyclic or heterocyclic) ring system, with two adjacent R1 to R4 groups together possibly forming a condensed aromatic (isocyclic or heterocyclic) ring system.