Liquid crystal materials
US4257911A · kind A · utility
36Cited by
11References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1979 |
| Grant date | Mar 24, 1981 |
| Priority date | — |
| Expiry date | Jul 27, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2019/2035
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Liquid crystal materials are provided which are esters having the general formula: ##STR1## where n has the value 1, 2 or 3 and R is a normal or branched chain alkyl containing up to ten carbon atoms and preferably four to ten carbon atoms. These materials display a cholesteric mesophase and also a chiral smectic C mesophase underlying the cholesteric mesophase. Both of these mesophases are thermochromic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.