Patent ID: 7833291

Claim:
A dye of the formula (I) wherein D is the residue of a diazo component; R 1 is hydrogen, (C 1 -C 6 )-alkyl, (C 1 -C 4 )-alkoxy or halogen or combines with R 2 to form the group —*CH(CH 3 )CH 2 C(CH 3 ) 2 —, where the carbon atom marked by * is attached to the phenyl nucleus; R 2 and R 3 independently are hydrogen, (C 1 -C 6 )-alkyl, substituted (C 1 -C 6 )-alkyl, (C 3 -C 4 )-alkenyl or substituted (C 3 -C 4 )-alkenyl; R 4 is —CHR 5 CN, —CHR 6 COR 7 or —CH═CH 2 ; R 5 is hydrogen, (C 1 -C 6 )-alkyl or substituted (C 1 -C 6 )-alkyl; R 6 is hydrogen, (C 1 -C 6 )-alkyl or substituted (C 1 -C 6 )-alkyl; R 7 is (C 1 -C 6 )-alkyl, substituted (C 1 -C 6 )-alkyl, vinyloxy, (C 1 -C 6 )-alkoxy, substituted (C 1 -C 6 )-alkoxy, phenoxy, substituted phenoxy, phenyl or substituted phenyl; and L is (C 2 -C 6 )-alkylene, oxygen-interrupted (C 2 -C 6 )-alkylene, (C 2 -C 6 )-alkenylene, arylene or substituted arylene; with the proviso that L is not C 2 -alkylene when R 5 is hydrogen.