Photochromic microemulsion ink compositions
US5551973A · kind A · utility
30Cited by
19References
42Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1995 |
| Grant date | Sep 3, 1996 |
| Priority date | — |
| Expiry date | Dec 5, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D11/34
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed is an ink composition which comprises an aqueous phase, an oil phase, a photochromic material, and a surfactant, said ink exhibiting a liquid crystalline gel phase at a first temperature and a liquid microemulsion phase at a second temperature higher than the first temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.