Ferroelectric liquid crystals with nicotinic acid cores
US5145601A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1990 |
| Grant date | Sep 8, 1992 |
| Priority date | — |
| Expiry date | Jun 25, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/3444
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Liquid crystal and ferroelectric liquid crystal compounds having core moieties based on nicotinic acid and having the general formula: ##STR1## where A is N or N--O and where R.sub.1 and R.sub.2, independently of one another, are straight chain or branched alkyl groups having from 1 to 20 carbons are provided. Ferroelectric liquid crystals of the present invention include those compounds in which one of R.sub.1 or R.sub.2 are chiral nonracemic groups. The pyridines and pyridine n-oxides or the present invention are useful as components of liquid crystal materials and certain of these compounds are useful as components of ferroelectric liquid crystal materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.