Liquid crystal compound
US4725688A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 6, 1986 |
| Grant date | Feb 16, 1988 |
| Priority date | — |
| Expiry date | Feb 6, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/3463
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention is an optically active liquid crystal compound shown in the following general formula; ##STR1## [wherein, A and B respectively show one of --, --O--, ##STR2## (-- shows direct bond), one of R.sub.1 and R.sub.2 shows direct chain alkyl group and the other one shows either alkyl group having asymmetric carbon atom or alkoxy alkyl group having asymmetric carbon atom and ether bonding. Also, onto the asymmetric carbon atom, one of the groups --CH.sub.3, --CN, --Cl is added.] It is clear that there are many compounds in these liquid crystal compounds, that show Sm C* phase in a wide temperature range close to room temperature and that have high response speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.