Ink composition resistant to solvent evaporation
US7084191B2 · kind B2 · utility
1Cited by
9References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2002 |
| Grant date | Aug 1, 2006 |
| Priority date | — |
| Expiry date | Mar 11, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention is directed to an ink composition resistant to solvent evaporation which may be employed for use in retractable permanent marker pens. Generally, the ink composition of the present invention comprises n-propanol, a pyrrolidone, a tryglyceride, a terpene phenolic resin, and at least one colorant to yield a detectable color when the ink composition is applied to a writable substrate. Additionally, the ink composition may further comprise at least one of polyether modified dimethylpolysiloxane copolymer and silicone glycol surfactant. Optionally, the ink composition may further comprise water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.