Low viscosity lyotropic cholesteric liquid crystal compositions
US4460492A · kind A · utility
1Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1981 |
| Grant date | Jul 17, 1984 |
| Priority date | — |
| Expiry date | Nov 19, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/54
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A low viscosity, short pitch, cholesteric liquid crystal composition consisting of an alkali cromoglycate dissolved in water or water with a polar solvent, together with an optically active solute in sufficient concentration to render the cromoglycate cholesteric. Suitable compositions will reflect light in the visible spectrum and may be magnetically, electrically, or thermally addressed to produce optical effects therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.