Agent and method for coloring keratin fibers containing 2-benzothiazolinone-hydrazone and quinone derivatives

An agent (A) for coloring fibers which is prepared before use by mixing two components (A1) and (A2), characterized in that component (A1) contains at least one 2-benzothiazolinone hydrazone derivative of formula (I) or a physiologically tolerated salt thereof

• wherein
• R1 and R2 can be equal or different and independently of each other denote hydrogen, a halogen atom, a (C1-C4)-alkyl group, a halogen-substituted (C1-C4)-alkyl group, a (C1-C4)-alkoxy group, a sulfo group, a sulfamoyl group, a carboxyl group, a nitro group, an acetamido group or an NRaRb group wherein the Ra and Rb groups can be equal or different and independently of each other denote hydrogen, a (C1-C6)-alkyl group, a carbocyclic or heterocyclic, substituted or unsubstituted aromatic grouping, or Ra and Rb together with the nitrogen atom form a saturated or unsaturated, substituted or unsubstituted heterocyclic (C3-C6) group;
• or R1 and R2 together with the remainder of the molecule form a heterocyclic or carbocyclic, substituted or unsubstituted ring system;
• R3 denotes a (C1-C4)-alkyl group, a halogen-substituted (C1-C4)-alkyl group, a sulfo-(C1-C4)-alkyl group, an acetyl group, a formyl group, a substituted or unsubstituted benzyl group or an isocyclic or heterocyclic grouping;
• and component (A2) contains at least one ortho-quinone of formula (II) or para-quinone of formula (III)
• wherein
• R4, R5, R6 and R7 independently of each other denote hydrogen, chlorine, bromine, fluorine, a hydroxyl group, a straight-chain or branched (C1-C6)-alkyl group, a straight-chain or branched monohydroxy-(C1-C6)-alkyl group, a straight-chain or branched polyhydroxy-(C2-C6)-alkyl group, a straight-chain or branched (C1-C6)-alkoxy group, a straight-chain or branched mono-(C1-C6)-alkoxy-(C1-C6)-alkyl group, a straight-chain or branched-poly-(C1-C6)-alkoxy-(C2-C6)-alkyl group, a (C1-C2)-alkylenedioxy group, a sulfo group, a cyano group, a straight-chain or branched amino-(C1-C6)-alkyl group, an —NRaRb amino group wherein the Ra and Rb groups can be equal or different and independently of each other denote hydrogen, a (C1-C6)-alkyl group, a carbocyclic or heterocyclic, substituted or unsubstituted aromatic grouping, or Ra and Rb together with the nitrogen atom form a saturated or unsaturated, substituted or unsubstituted heterocyclic (C3-C6)-group;
• or in o-quinones of formula (II) R4 and R5 and/or R6 and R7 or R5 and R6, or in p-quinones of formula (III) R4 and R5, and/or R6 and R7 always together with the remainder of the molecule form a heterocyclic or carbocyclic, substituted or unsubstituted ring.