Liquid crystalline compositions
US4228029A · kind A · utility
16Cited by
10References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1979 |
| Grant date | Oct 14, 1980 |
| Priority date | — |
| Expiry date | Jan 24, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/3068
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Liquid crystalline compositions, especially for displays with a twisted nematic phase, comprising at least one compound of the formula ##STR1## wherein X=H, --CHO or --CH.sub.3, R.sup.1 =C.sub.1 --C.sub.10 alkyl, R.sup.2 is a monovalent organic group, for example, --CN; and Y is a single bond or one of the groups --COO-- or ##STR2## The compositions show a high positive dielectric anisotropy (.DELTA..epsilon.), a high .DELTA.n, and a low viscosity, and the mixture system may comprise relatively few components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.