Patent ID: 7070629

Claim:
A dye composition comprising, in a suitable dyeing medium, at least one first oxidation base chosen from 4,5-diaminopyrazole oxidation bases of formula (I) and addition salts thereof: wherein R 1 is chosen from C 1 -C 6 alkyl radicals substituted with least one radical OR, wherein R is chosen from C 1 -C 6 alkyl radicals; at least one second oxidation base chosen from para-phenylenediamine derivatives of formula (II) and addition salts thereof: wherein: Z represents the atoms required to form a 3- to 8-membered saturated ring, wherein the atoms are optionally chosen from carbon and nitrogen atoms, and the ring may optionally be substituted; R 2 is chosen from hydrogen, chlorine, and bromine atoms; linear and branched, saturated and unsaturated C 1 -C 7 hydrocarbon-based chains, wherein at least one of the carbon atoms may be replaced with at least one entity chosen from oxygen, nitrogen, and sulphur atoms and an SO 2 group, and wherein the carbon atoms may, independently of each other, be substituted with at least one halogen atom; provided that the radical R 2 does not comprise a peroxide bond, a diazo radical, a nitro radical, or a nitroso radical; and at least one coupler.