Patent ID: 7056347
Filing Date: 2006-06-06
Classification: A61K,A61Q,C09B

Abstract:
1. Agent for oxidative dyeing of keratin fibers, said agent comprising at least one developer and at least one coupler, and wherein said at least one coupler comprises at least one (1,1′-biphenyl)-2,4-diamine derivative compound of formula (I), or a physiologically tolerated salt thereof: wherein R1, R2, R3, R4 and R5 can be equal or different and independently of each other, denote hydrogen, a halogen atom, a cyano group, a hydroxyl group, a C 1 –C 4 -alkoxy group, a C 1 –C 4 -hydroxyalkoxy group, a C 1 –C 6 -alkyl group, a C 1 –C 4 -alkyl thioether group, a mercapto group, a nitro group, an amino group, a C 1 –C 4 -monoalkylamino group, a di(C 1 –C 4 )-alkylamino group, a trifluoromethyl group, a —C(O)H group, a —C(O)CH 3 group, a —C(O)CF 3 group, an —Si(CH 3 ) 3 group, a C 1 –C 4 -hydroxyalkyl group, a C 2 –C 4 -dihydroxyalkyl group, a —CH═CHR6 group, a —(CH 2 ) p CO 2 R7 group or a —(CH 2 ) p R8 group with p=1, 2, 3 or 4, a —C(R9)=NR10 group or a —C(R12)H—NR13R14 group, or two adjacent ones of said R1, R2, R3, R4 and R5 together form an —O—CH 2 —O— bridge; R6 denotes hydrogen, a nitro group, a —CO R7, R9 and R12 are the same or different and, independently of each, other denote hydrogen or a C R8 denotes an amino or nitrile group; R10, R13 and R14 are the same or different and, independently of each other, denote hydrogen, a hydroxyl group, a C and R11 denotes hydrogen, an amino group or a hydroxyl group with a proviso that when R3=NH