Fugitive ink composition
US4505944A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1983 |
| Grant date | Mar 19, 1985 |
| Priority date | — |
| Expiry date | Aug 1, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S283/901
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.