GB1432692A - Liquid crystals - Google Patents
Liquid crystalsInfo
- Publication number
- GB1432692A GB1432692A GB1991673A GB1991673A GB1432692A GB 1432692 A GB1432692 A GB 1432692A GB 1991673 A GB1991673 A GB 1991673A GB 1991673 A GB1991673 A GB 1991673A GB 1432692 A GB1432692 A GB 1432692A
- Authority
- GB
- United Kingdom
- Prior art keywords
- april
- halogen
- liquid crystals
- phenyl
- comptroller
- 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
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
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
- C09K19/20—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers
- C09K19/2007—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers the chain containing -COO- or -OCO- groups
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1432692 Substituted phenyl benzoates EASTMAN KODAK CO 26 April 1973 [26 April 1972] 19916/73 Heading C2C [Also in Divisions C4 and H3-H5] Nematic liquid crystal compounds of the formula where R 5 and R 8 each represent R<SP>1</SP>-, R<SP>1</SP>O-, R<SP>1</SP>S- (where R<SP>1</SP> is alkyl or alkenyl), halogen, -CN or -NO 2 , and R 1 -R 4 , R 6 and R 7 are each H, Me, MeO, Et, -CN or halogen, are prepared by reacting the appropriate benzoyl chloride and phenyl p-hydroxybenzoate, e.g. in pyridine. Reference has been directed by the Comptroller to Specification 1,346,874.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US24756372A | 1972-04-26 | 1972-04-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1432692A true GB1432692A (en) | 1976-04-22 |
Family
ID=22935371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1991673A Expired GB1432692A (en) | 1972-04-26 | 1973-04-26 | Liquid crystals |
Country Status (3)
Country | Link |
---|---|
CA (1) | CA997134A (en) |
FR (1) | FR2181943B1 (en) |
GB (1) | GB1432692A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0050023A1 (en) * | 1980-10-13 | 1982-04-21 | The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and | Liquid crystal devices |
US4621901A (en) * | 1984-07-12 | 1986-11-11 | Hoffmann-La Roche Inc. | Novel liquid crystal mixtures |
US4659501A (en) * | 1984-01-30 | 1987-04-21 | Chisso Corporation | 2-cyano-4-halogenophenyl substituted-benzoates |
US4676604A (en) * | 1983-03-16 | 1987-06-30 | Hoffmann-La Roche Inc. | Liquid crystals |
US5238602A (en) * | 1984-07-16 | 1993-08-24 | Hoffmann La Roche Inc. | Liquid crystals |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4001137A (en) * | 1971-08-07 | 1977-01-04 | Merck Patent Gesellschaft Mit Beschrankter Haftung | Nematic compounds and mixtures |
US4147651A (en) * | 1974-09-03 | 1979-04-03 | Beckman Instruments, Inc. | Biphenyl based liquid crystal compositions |
US3984344A (en) * | 1975-04-30 | 1976-10-05 | General Electric Company | Positive dielectric anisotropy liquid crystal compositions |
FR2439765A1 (en) * | 1978-10-27 | 1980-05-23 | Thomson Csf | MESOMORPHIC ORGANIC COMPOUND HAVING A CHEMICAL FORMULA DERIVED FROM A TETRAFLUOROBENZOIC ACID, AND LIQUID CRYSTAL DEVICE USING SUCH A COMPOUND |
DE2967129D1 (en) * | 1979-05-28 | 1984-08-30 | Merck Patent Gmbh | Liquid-crystal compositions |
US4399298A (en) * | 1980-02-15 | 1983-08-16 | Chisso Corporation | Carboxylic acid ester derivatives of 4-fluorophenol |
FR2604440B1 (en) * | 1986-09-30 | 1988-11-10 | Thomson Csf | MESOMORPHIC POLYMERS WITH LATERAL CHAINS DERIVED FROM 1- (PHENYL) -2- (4-CYANOPHENYL) ETHANE |
-
1973
- 1973-03-05 CA CA165,270A patent/CA997134A/en not_active Expired
- 1973-04-20 FR FR7314520A patent/FR2181943B1/fr not_active Expired
- 1973-04-26 GB GB1991673A patent/GB1432692A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0050023A1 (en) * | 1980-10-13 | 1982-04-21 | The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and | Liquid crystal devices |
US4566759A (en) * | 1980-10-13 | 1986-01-28 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Laterally fluorinated liquid crystal materials and frequency change devices |
US4676604A (en) * | 1983-03-16 | 1987-06-30 | Hoffmann-La Roche Inc. | Liquid crystals |
US5013478A (en) * | 1983-03-16 | 1991-05-07 | Hoffmann-La Roche Inc. | Liquid crystals |
US4659501A (en) * | 1984-01-30 | 1987-04-21 | Chisso Corporation | 2-cyano-4-halogenophenyl substituted-benzoates |
US4621901A (en) * | 1984-07-12 | 1986-11-11 | Hoffmann-La Roche Inc. | Novel liquid crystal mixtures |
US4709030A (en) * | 1984-07-12 | 1987-11-24 | Hoffmann-La Roche Inc. | Novel liquid crystal mixtures |
US5238602A (en) * | 1984-07-16 | 1993-08-24 | Hoffmann La Roche Inc. | Liquid crystals |
Also Published As
Publication number | Publication date |
---|---|
FR2181943A1 (en) | 1973-12-07 |
CA997134A (en) | 1976-09-21 |
FR2181943B1 (en) | 1975-08-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |