Patent ID: 7682404

Claim:
A process for coloring keratin fibers, which comprises contacting said fibers, with at least one colored metal-complex comprising a metal and a ligand of formulae (1), or (2), wherein m is 0, 1, 2, 3 or 4; it being possible when a plurality of m is present to be selected independently of each other; n is 0, 1, 2 or 3; it being possible when a plurality of n is present to be selected independently of each other; p is 0, 1 or 2; it being possible when a plurality of n is present to be selected independently of each other; Z, when present, is unsubstituted or substituted and/or interrupted or uninterrupted alkyl or cycloalkyl; unsubstituted or substituted aryl or heteroaryl; or unsubstituted or substituted radicals of azo or azomethine compounds; halogen; hydroxyl; thiol; nitro; sulfo; cyano; guanidine; unsubstituted or substituted —OR 8 , —SR 8 , —O(CO)R 8 , —(CO)OR 8 , —NR 10 COR 8 , —CONR 10 , —OP(O)(OR 8 ) 2 , —P(O)(OR 8 ) 2 , —OS(O) 2 R 8 , —S(O) 2 OR 8 , —S(O) 2 NR 8 R 9 , NR 8 R 9 or + NR 8 R 9 R 10 , wherein R 8 , R 9 and R 10 are independently of each other hydrogen; unsubstituted or substituted and/or interrupted or uninterrupted alkyl, cycloalkyl, alkylen; unsubstituted or substituted aryl or heteroaryl; unsubstituted or substituted radical of an azo or azomethine compound; or R 8 and R 9 , together with the nitrogen atom linking them, form an unsubstituted or substituted 5-, 6- or 7-membered ring which may contain further heteroatoms, with the proviso that a metal-complex of Fe 2+ with 2,4,6-tris-(α-pyridyl)-1,3,5-triazine, 1,10-phenanthroline or 4′-phenyl-2-2′,2″-terpyridine is excluded; wherein said process is carried out in the absence of a dye precursor, and is a process wherein the keratin fibers or the hair is contacted with the colored metal-complex without pre-treatment or presence of a keratin swelling agent and the colored metal-complex is the only dye used.