Patent ID: 7326254

Claim:
Ready-to-use agent for the simultaneous brightening and coloring of keratin fibers (A), based on a developer-coupler combination and having a basic pH, said agent containing (a) at least one heterocyclic hydrazone derivative of formula (I), or a physiologically compatible salt thereof: wherein X denotes sulfur, Y denotes C—R3 and Z denotes C—R4, A denotes a hydrogen atom; R1 and R2 can be equal or different and independently of each other denote a saturated or unsaturated (C 1 -C 12 )-alkyl group, a halogen-substituted (C 1 -C 12 )-alkyl group, a hydroxy-(C 1 -C 12 )-alkyl group, an amino-(C 1 -C 12 )-alkyl group, a sulfonic acid-(C 1 -C 12 )-alkyl group, a formyl group, a C(O)—(C 1 -C 12 )-alkyl group, a C(O)-phenyl group, a C(O)NH-alkyl group, a C(O)NH-phenyl group, a substituted or unsubstituted phenyl group or a benzyl group; R3 and R4 can be equal or different and independently of each other denote hydrogen, a halogen atom, a saturated or unsaturated (C 1 -C 12 )-alkyl group, a halogen-substituted (C 1 -C 12 )-alkyl group, a hydroxyl group, a hydroxy-(C 1 -C 12 )-alkyl group, a (C 1 -C 12 )-alkoxy group, a cyano group, a nitro group, an amino group, a (C 1 -C 12 )-alkylamino group, a (C 1 -C 12 )-dialkylamino group, a carboxylic acid, a C(O)O—(C 1 -C 12 )-alkyl group, a substituted or unsubstituted C(O)O-phenyl group, a substituted or unsubstituted phenyl group or a naphthyl group; and when Y and Z denote C—R3 and C—R4, R3 and R4 together with the remainder of the molecule form a heterocyclic or carbocyclic, saturated or unsaturated, substituted or unsubstituted ring system; (b) at least one coupler or a physiologically compatible salt thereof; and (c) as oxidant a combination of at least one persulfate salt and hydrogen peroxide and/or an addition compound thereof, wherein said addition compound is selected from the group consisting of an addition compound of hydrogen peroxide to urea, an addition compound of hydrogen peroxide to melamine, an addition compound of hydrogen peroxide to sodium borate and an addition compound of hydrogen peroxide to sodium carbonate.