Patent ID: 7291183
Filing Date: 2007-11-06
Classification: A61K,A61Q

Abstract:
1. An agent for coloring fibers (A), containing: (a) at least one hydrazone derivative of formula (I) or a physiologically compatible salt thereof, wherein X denotes oxygen or sulfur, A denotes hydrogen, an acetyl group, a trifluoroacetyl group, a formyl group, a (C R1 denotes a saturated or unsaturated (C R2 and R3 can be equal or different and independently of each other denote hydrogen, a halogen atom (F, Cl, Br, I), a saturated or unsaturated (C or R2 and R3 together with the remainder of the molecule form a heterocyclic or carbocyclic, saturated or unsaturated, substituted or unsubstituted ring system; (b) at least one known coupler or a physiologically compatible salt thereof; and (c) a persulfate salt as oxidant.