Birefringent compounds used in Kerr cells
US3941453A · kind A · utility
3Cited by
1References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1974 |
| Grant date | Mar 2, 1976 |
| Priority date | — |
| Expiry date | Nov 13, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/07
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Molecules with a group X which attracts electrons and comprises .pi.-electrons and conjugated therewith a group R which supplies electrons, of the formula EQU R -- X in which X represents --COCF.sub.3, --COC.sub.6 H.sub.5 or --SO.sub.n CF.sub.3, n being 0 or 2, and R represents phenyl or (CH.sub.3).sub.2 N, as electrooptically active liquid inter alia have the advantage that they are achromatic compared with nitrobenzene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.