FIELD: chemistry.
SUBSTANCE: invention relates to liquid crystal (LC) media for high frequency devices such as phase shifters, antennas, tunable filters, switching devices, for example, operating in the microwave range. The LC medium contains, at least, one mesogenic compound I and II; or contains, at least, one mesogenic compound II and III; or, at least, one mesogenic compound I, II, and III. Structural formulas of the mesogenic compounds I, II, III are indicated in the formula and description. The method for producing the said LC medium, its use in a microwave antenna array and as a component of high frequency equipment such as a phase shifter, are also described.
EFFECT: invention provides liquid crystal media with a high optical anisotropy coefficient (Δn), positive dielectric anisotropy (Δε) and a wide temperature range of nematic phases.
14 cl, 1 tbl, 19 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PREPARING FLUORINE-CONTAINING COMPOUNDS | 1997 |
|
RU2175958C2 |
| METALLOCENE COMPOUNDS | 2006 |
|
RU2410388C2 |
| METHOD OF PRODUCING NITRILE COMPOUNDS FROM ETHYLENICALLY UNSATURATED COMPOUNDS | 2010 |
|
RU2530019C2 |
| METALLOCENE COMPOUNDS, CATALYSTS CONTAINING SAID COMPOUNDS, METHOD OF PRODUCING OLEFIN POLYMER USING CATALYSTS AND OLEFIN HOMO- AND COPOLYMERS | 2007 |
|
RU2470035C2 |
| METHOD OF MODIFYING CHIRAL LIQUID-CRYSTAL FILMS USING EXTRACTING AGENTS | 2004 |
|
RU2367677C2 |
| RACEMOSELECTIVE SYNTHESIS OF ANSA-METALLOCENE COMPOUNDS, ANSA-METALLOCENE COMPOUNDS, CATALYSTS CONTAINING SAID COMPOUNDS, METHOD OF PRODUCING OLEFIN POLYMER USING CATALYSTS AND OLEFIN HOMO- AND COPOLYMERS | 2007 |
|
RU2476449C2 |
| LAYERED MATERIAL FOR MULTILAYER GLASS | 2009 |
|
RU2502097C2 |
| PRODUCTION OF COMPLEX DIESTERS OF (MET)ACRYLIC ACID FROM EPOXIES | 2019 |
|
RU2797811C2 |
| NOVEL BICYCLIC DIOXANES, PRODUCTION AND USE THEREOF AS AROMATIC COMPOUNDS | 2010 |
|
RU2562973C2 |
| LAYERED MATERIAL FOR MULTILAYER GLASS AND INTERLAYER FILM FOR MULTILAYER GLASS | 2009 |
|
RU2523814C2 |
