Liquid-crystalline substituted biphenyl esters
US4737313A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1986 |
| Grant date | Apr 12, 1988 |
| Priority date | — |
| Expiry date | Aug 8, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/2021
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Novel ferroelectric liquid crystals exhibiting a chiral smectic C phase and liquid crystal compositions containing the same are provided, which liquid crystals are substituted biphenyl esters expressed by the general formula ##STR1## wherein R.sub.1 * represents an optically active alkyl group of 4 to 18 carbon atoms; ##STR2## represents ##STR3## or ##STR4## Z represents R.sub.2, R.sub.2 CO or R.sub.2 COO wherein R.sub.2 represents an alkyl group or an alkoxy group each of 1 to 18 carbon atoms; and X and Y each represent hydrogen atom (H), bromine atom (Br), chlorine atom (Cl), fluorine atom (F) or cyano group (CN), and either one of X or Y is always hydrogen atom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.