Fugitive ink composition
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United States of America Patent
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Mar 19, 1985
Grant Date -
N/A
app pub date -
Aug 1, 1983
filing date -
Aug 1, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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.degree. to 100.degree. C., and has a T.sub.300 temperature in the range of from about 5.degree. to about 150.degree. 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.
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