Liquid crystal compounds
US4211666A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1978 |
| Grant date | Jul 8, 1980 |
| Priority date | — |
| Expiry date | Nov 14, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel compounds, 4-alkyl-cyclohexenes having at the 1-position thereof p-cyanophenyl group or 4'-cyano-4-biphenylyl group, expressed by the general formula ##STR1## wherein R represents a straight alkyl group having 1.about.9 carbon atoms and n represents 1 or 2; methods for producing the same; and nematic liquid crystal (L.C.) compositions comprising at least one member selected from the group consisting of said compounds, are provided. Said compounds having a cyclohexene ring have a lower viscosity than conventional L.C. compounds, and have effectivenesses of short response time when applied to L.C. display apparatus; superior compatibility with other L.C. compounds to form convenient L.C. mixture; and no need of separating cis- and trans-forms in the midway step of the preparation as in the prior art.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.