DE68903440D1 - Pyramidenfoermige fluessigkristalle. - Google Patents
Pyramidenfoermige fluessigkristalle.Info
- Publication number
- DE68903440D1 DE68903440D1 DE8989112598T DE68903440T DE68903440D1 DE 68903440 D1 DE68903440 D1 DE 68903440D1 DE 8989112598 T DE8989112598 T DE 8989112598T DE 68903440 T DE68903440 T DE 68903440T DE 68903440 D1 DE68903440 D1 DE 68903440D1
- Authority
- DE
- Germany
- Prior art keywords
- pyramid
- liquid crystals
- crystals
- liquid
- pyramid liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/32—Non-steroidal liquid crystal compounds containing condensed ring systems, i.e. fused, bridged or spiro ring systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/11—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms
- C07C37/115—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms using acetals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2603/00—Systems containing at least three condensed rings
- C07C2603/92—Systems containing at least three condensed rings with a condensed ring system consisting of at least two mutually uncondensed aromatic ring systems, linked by an annular structure formed by carbon chains on non-adjacent positions of the aromatic system, e.g. cyclophanes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Liquid Crystal Substances (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8821308A IT1226547B (it) | 1988-07-11 | 1988-07-11 | Cristalli liquidi piramidali. |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68903440D1 true DE68903440D1 (de) | 1992-12-17 |
DE68903440T2 DE68903440T2 (de) | 1993-05-27 |
Family
ID=11179872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8989112598T Expired - Fee Related DE68903440T2 (de) | 1988-07-11 | 1989-07-10 | Pyramidenfoermige fluessigkristalle. |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0350842B1 (de) |
JP (1) | JPH02111737A (de) |
DE (1) | DE68903440T2 (de) |
ES (1) | ES2041900T3 (de) |
IT (1) | IT1226547B (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8906031D0 (en) * | 1989-03-16 | 1989-04-26 | Ici Plc | Compound |
IT1230943B (it) * | 1989-06-28 | 1991-11-08 | Tecnopart Srl | Cristalli liquidi piramidali ferroelettrici. |
DE4011804A1 (de) * | 1990-04-12 | 1991-10-24 | Hoechst Ag | Verwendung von makrocyclischen verbindungen als komponente fuer ferroelektrische fluessigkristallmischungen |
IT1238230B (it) * | 1989-12-06 | 1993-07-12 | Tecnopart Srl | Miscele di cristalli liquidi colonnari piramidali e procedimento per la loro preparazione |
IT1248713B (it) * | 1990-06-08 | 1995-01-26 | Siac It Additivi Carburanti | Composizioni di idrocarburi di raffinazione dotate di migliorata fluidita' alle basse termperature |
US5384068A (en) * | 1991-08-17 | 1995-01-24 | Hoechst Aktiengesellschaft | Switchable columnar liquid-crystalline systems |
JP6701611B2 (ja) * | 2017-10-05 | 2020-05-27 | Dic株式会社 | 液晶組成物及び液晶表示素子 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1222085B (it) * | 1987-07-21 | 1990-08-31 | Montedison Spa | Tetrameri ciclici liquido cristallini |
-
1988
- 1988-07-11 IT IT8821308A patent/IT1226547B/it active
-
1989
- 1989-07-10 ES ES198989112598T patent/ES2041900T3/es not_active Expired - Lifetime
- 1989-07-10 DE DE8989112598T patent/DE68903440T2/de not_active Expired - Fee Related
- 1989-07-10 EP EP89112598A patent/EP0350842B1/de not_active Expired - Lifetime
- 1989-07-11 JP JP1178907A patent/JPH02111737A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
IT8821308A0 (it) | 1988-07-11 |
ES2041900T3 (es) | 1993-12-01 |
IT1226547B (it) | 1991-01-24 |
EP0350842B1 (de) | 1992-11-11 |
EP0350842A2 (de) | 1990-01-17 |
JPH02111737A (ja) | 1990-04-24 |
EP0350842A3 (en) | 1990-05-16 |
DE68903440T2 (de) | 1993-05-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |