| 摘要 |
A water-soluble dye for a color subtractive, lightfast, wide spectrum ink as follows: <IMAGE> wherein: X is <IMAGE> R1 is: an aliphatic radical having from 1 to 18 carbon atoms; the radical <IMAGE> in which R2 is -H, -lower alkyl of 1 to 4 C atoms, -lower alkoxy, -halogen, -NO2 -CN, -CO2H; R3 is -H, -lower alkyl having 1 to 4 C atoms, -halogen, -CO2H; M is H, Li, Na, K, -N(R4)4 in which R4 is H, <IMAGE> in which R5 is -H, -lower alkyl, and n is 1 to 4; and in which one of the -SO3M groups on the amino-naphthol radical is positioned meta or para -SO3M is meta to the -OH. and the dye in a water and glycol vehicle. A dye set of this dye, Direct Blue 199, and Direct Yellow 132 provides a full color spectrum of bright, lightfast colors. |
