Silacyclohexane compounds, preparation thereof, liquid crystal compositions comprising the same, and liquid crystal devices comprising the compositions
US5641430A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 1995 |
| Grant date | Jun 24, 1997 |
| Priority date | — |
| Expiry date | Dec 1, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A silacyclohexane compound of the following formula (I) or (II) ##STR1## wherein R is an organic residue, ##STR2## represents an unsubstituted or substituted trans-1-sila-1,4-cyclohexylene group or trans-4-sila-1,4-cyclohexylene group, L.sub.1 and L.sub.2 independently represent H, F, Cl or CH.sub.3 ; and X represents an organic residue, CN, F or Cl, or ##STR3## wherein R, L.sub.1, L.sub.2 and X are, respectively, as defined above, and at least one of ##STR4## represents an unsubstituted or substituted trans-1-sila-1,4-cyclohexylene group or trans-4-sila-1,4-cyclohexylene group, and the other may be a trans-1,4-cyclohexylene group. The preparation of these compounds is described along with a composition comprising the compound (I) and/or (II) and a display device comprising the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.