Thermographic materials containing ionic liquids
US7163786B1 · kind B1 · utility
3Cited by
3References
20Claims
0Family size
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Key dates
| Filing date | Sep 23, 2005 |
| Grant date | Jan 16, 2007 |
| Priority date | — |
| Expiry date | Sep 23, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2001/7635
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Ionic liquids are added to black-and-white direct thermographic materials to provide increased image density or to allow for reduced silver coverage (that is, improved silver efficiency). Useful ionic liquids include imidazolium, pyrazolium, pyridinium, pyrimidinium, pyrazinium, tetra-alkylammonium, or tetra-alkylphosphonium cations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.