Optically active liquid crystal compound having cyano group
US4886622A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1987 |
| Grant date | Dec 12, 1989 |
| Priority date | — |
| Expiry date | Aug 18, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/3463
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An optically liquid crystalline compound having an extremely large spontaneous polarization value and a chiral smectic liquid crystal composition containing the compound are provided, the compound being expressed by the formula ##STR1## wherein m represents an integer of 2 to 18; l represents an integer of 0 to 12; n represents 0 or 1; R represents an alkyl group or an alkoxy group each of 2 to 20 carbon atoms, a halogen atom or cyano group; and A and B each represent a single bond, ##STR2## wherein X represents hydrogen atom, a halogen atom or cyano group, and a chiral smectic liquid crystal composition containing at least one kind of the above compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.