| 摘要 |
The present invention provides a fugitive ink composition, and a process for providing a fugitive mark on fibrous material. The fugitive ink comprises a dark organic pigment comprising a complex between a polyvalent metal and tannic acid, and a binding agent that is insoluble in water at a pH of about 7 and at a temperature in the range of from 0 DEG to 100 DEG C., and has a T300 temperature in the range of from about 5 DEG to about 150 DEG C. The fugitive ink composition may further comprise a diluting agent, a dispersing agent, a wetting agent, a defoaming agent, a preservative, a basic reagent, and a viscosity controller. The fugitive ink composition of the present invention provides a dark identification mark that has the ability to withstand the vagaries of weather, yet substantially decolorizes upon being subjected to mechanical processing alone, or in conjunction with scouring and bleaching with a bleaching agent. |
