Patent ID: 8444715

Claim:
A functionalized dye comprising at least one chromophore and a color fastness moiety, wherein the chromophore is bound to the color fastness moiety by a linker, wherein said dye is a compound of formula Ia: C-L-F (Ia) wherein C is a chromophore selected from the following group: a diarylmethane chromophore, an azo chromophore, a nitro chromophore, a nitroso chromophore, or a substituted benzene chromophore; linker L is of formula (IIIa): wherein L covalently links C via the left hand side of formula IIIa to F via the right hand side of formula IIIa; a, b, c, d, and e are each 0; f is 1; R 40 , R 41 , R 42 , R 43 , R 44 , R 45 , R 46 , R 47 , R 48 , and R 49 are absent; R 50 and R 51 are each hydrogen; E is NR 52 or NR 53 C═O; R 52 and R 53 are each independently hydrogen or alkyl; F is a color fastness moiety represented by formula Va: wherein m is 0 or 1; n and o are 0; p, q and r are each independently 0 or 1, provided that at least one of m, p, q and r is not 0; R 78 , R 79 , R 84 , R 85 , R 87 , R 88 and R 89 are each hydrogen; R 80 , R 81 , R 82 , and R 83 are absent; R 86 is absent, hydrogen or hydroxyl; K is NR 90 , or C(═O)NR 92 ; W is NR 95 R 96 , CR 97 R 98 R 99 or OR 100 ; R 90 is hydrogen; R 92 is hydrogen or alkyl; R 95 is alkyl and R 96 is hydrogen or alkyl, or R 95 and R 96 , together with the nitrogen to which they are attached are linked to form a 4-8-membered heterocyclic ring comprising 1-3 heteroatoms; R 97 , R 98 and R 99 are hydrogen, hydroxyl, alkyl, alkoxy or heteroaryl; and R 100 is hydrogen or alkyl; provided that the dye of formula Ia is not: or a cosmetically acceptable salt thereof.