Liquid crystal compounds and materials and devices containing them
US4219256A · kind A · utility
12Cited by
3References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1979 |
| Grant date | Aug 26, 1980 |
| Priority date | — |
| Expiry date | Aug 1, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/321
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A novel liquid crystal compound has the molecular structure: ##STR1## where R is an alkyl group, which may contain up to 18 carbon atoms and which may be normal or branched and may contain a chiral center, ##STR2## is a bicyclo (2.2.2) octane ring, ##STR3## is a phenyl ring and CN is a cyano group, n being an integer greater than 0 preferably 1 or 2. The compound may be used in mixtures with other liquid crystal compounds in the same or other families and the compound or mixtures may be used in known liquid crystal devices, eg the twisted nematic and cholesteric-to-nematic phase change devices, depending on its properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.