US4502974A
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High temperature liquid-crystalline ester compounds
Assignee: JNC Corp
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Filing: 1983-03-23
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Granted: 1985-03-05
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Expires: 2003-03-23
Abstract
Abstract New liquid-crystalline ester compounds which exhibit a liquid-crystalline phase within a broad temperature range and have a positive, dielectric anisotropy, and a liquid-crystalline composition comprising the same are provided which ester compounds are expressed by the general formula ##STR1## wherein R represents hydrogen atom or an alkyl group of 1 to 10 carbon atoms; ##STR2## X represents ##STR3## Y represents hydrogen atom, F, Cl or CN; and Z represents F, Cl or CN.
Inventors
- 👤 Shigeru Sugimori
- 👤 Tetsuhiko Kojima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:32
CPC Classifications
C; C07; C07C; C07C255/00; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3001; C09K19/3066; C09K19/3068
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
52 words
Liquid crystalline ester compounds expressed by the general formula ##STR77## wherein R represents hydrogen atom or an alkyl group of 1 to 10 carbon atoms; ##STR78## X represents ##STR79## Y is hydrogen, F or Cl; and Z is F, Cl or CN; with the proviso that when Y is hydrogen then ##STR80##
Claim 2
Dependent Claim
52 words
Liquid crystalline ester compounds expressed by the general formula ##STR77## wherein R represents hydrogen atom or an alkyl group of 1 to 10 carbon atoms; ##STR78## X represents ##STR79## Y is hydrogen, F or Cl; and Z is F, Cl or CN; with the proviso that when Y is hydrogen then ##STR80##
Claim 3
Dependent Claim
23 words
Trans-4'-alkyl-trans-octadecahydro-p-terphenyl-trans-4-carboxylic acid-4-substituted phenyl esters expressed by the general formula ##STR81## wherein R and Z each have the same definitions as in claim 1.
Claim 4
Dependent Claim
38 words
Compounds as set forth in claim 1 which can be designated as trans-4-[4-(trans-4-alkylcyclohexyl)phenyl]cyclohexanecarboxylic acid-4-substituted phenyl esters and which is expressed by the general formula ##STR82## wherein R and X each have the same definitions as in claim 1.
Claim 5
Dependent Claim
44 words
Compounds as set forth in claim 1 which can be designated as trans-4"-alkyl-trans-octadecahydro-p-terphenyl-trans-4-carboxylic acid-2,4-dihalogenophenyl esters and which can be expressed by the general formula ##STR83## wherein R has the same definition as in claim 1 and Y and Z each represent F or Cl.
Claim 6
Dependent Claim
44 words
Compounds as set forth in claim 1 which can be designated as 4-[trans-4-(trans-4-alkylcyclohexyl)cyclohexyl]benzoic acid-2,4-dihalogenophenyl esters and which can be expressed by the general formula ##STR84## wherein R has the same definition as in claim 1 and Y and Z each represent F or Cl.
Claim 7
Dependent Claim
44 words
Compounds as set forth in claim 1 which can be designated as trans-4-[-(trans-4-alkylcyclohexyl)phenyl]cyclohexanecarboxylic acid-2,4-dihalogenophenyl esters and which can be expressed by the general formula ##STR85## wherein R has the same definition as in claim 1 and Y and Z each represent F or Cl.
Claim 8
Dependent Claim
44 words
Compounds as set forth in claim 1 which can be designated as 4-(trans-4-alkylcyclohexyl)biphenyl-4-carboxylic acid-2,4-dihalogenophenyl esters and which can be expressed by the general formula ##STR86## wherein R has the same definition as in claim 1 and Y and Z each represent F or Cl.
Claim 9
Dependent Claim
40 words
Compounds as set forth in claim 1 which can be designated as trans-4"-alkyl-trans-octadecahydro-p-terphenyl-trans-4-carboxylic acid-3,4-dihalogeno-phenyl esters expressed by the general formula ##STR87## wherein R has the same definition as in claim 1 and Y and Z each represent F or Cl.
Claim 10
Dependent Claim
44 words
Compounds as set forth in claim 1 which can be designated as 4-[trans-4-(trans-4-alkylcyclohexyl)cyclohexyl]benzoic acid-3,4-dihalogenophenyl esters and which can be expressed by the general formula ##STR88## wherein R has the same definition as in claim 1 and Y and Z each represent F or Cl.
Claim 11
Dependent Claim
44 words
Compounds as set forth in claim 1 which can be designated as trans-4-[4-(trans-4-alkylcyclohexyl)phenyl]cyclohexanecarboxylic acid-3,4-dihalogenophenyl esters and which can be expressed by the general formula ##STR89## wherein R has the same definition as in claim 1 and Y and Z each represent F or Cl.
Claim 12
Dependent Claim
41 words
Compounds as set forth in claim 1 which can be designated as trans-4-alkyl-trans-4"-(4-substituted benzoyloxy)octadecahydro-trans-p-terphenyls and which can be expressed by the general formula ##STR90## wherein R has the same definition as in claim 1 and Z represents F, Cl or CN.
Claim 13
Dependent Claim
32 words
Compounds as set forth in claim 1 which can be designated as trans-4-alkyl-trans-4"-(2,4-dichlorobenzoyloxy)octadecahydro-trans-p-terphenyls and which can be expressed by the formula ##STR91## wherein R has the same definition as in claim 1.
Claim 14
Dependent Claim
35 words
Compounds as set forth in claim 1 which can be designated as 2,4-dichlorobenzoic acid-4-[trans-4-(trans-4-alkylcyclohexyl)cyclohexyl]phenyl esters and which can be expressed by the general formula ##STR92## wherein R has the same definition as in claim 1.
Claim 15
Dependent Claim
33 words
Compounds as set forth in claim 1 which can be designated as trans-4-alkyl-trans-4"-(3,4-dichlorobenzoyloxy)octadecahydro-trans-p-terphenyls and which can be expressed by the general formula ##STR93## wherein R has the same definition as in claim 1.
Claim 16
Dependent Claim
40 words
Compounds as set forth in claim 1 which can be designated as 3,4-dichlorobenzoic acid-4-[trans-4-(trans-4-alkylcyclohexyl]phenyl esters and which can be expressed by the general formula ##STR94## wherein R represents hydrogen atom or an alkyl group of 1 to 10 carbon atoms.
Claim 17
Dependent Claim
24 words
A liquid crystal composition comprising a mixture of compounds, at least one of which is the compound of the formula (I) of claim 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-04 | 1988-09-03 | 1989-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-04 | 1992-09-03 | 1993-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-04 | 1996-09-03 | 1997-03-05 | $7700.00 | Window Closed / Lapsed |