US4387039A
Expired / Lapsed
US
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Trans-4-(trans-4'-alkylcyclohexyl)-cyclohexane carboxylic acid 4'"-cyanobiphenyl ester
Assignee: JNC Corp
•
Filing: 1981-06-26
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Granted: 1983-06-07
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Expires: 2001-06-26
Abstract
Abstract New ester type nematic liquid crystal compounds as well as a liquid crystal composition containing said compounds are provided, wherein said compounds are trans-4-(trans-4'-alkylcyclohexyl)-cyclohexane carboxylic acid 4"'-cyanobiphenyl esters represented by the general formula of ##STR1## wherein R is straight or branched alkyl group of 1˜10 carbon atoms. The compounds are useful as a component of liquid crystal compositions which have a higher N-I temperature since they have a wide mesomorphoric temperature range in a higher temperature range.
Inventors
- 👤 Shigeru Sugimori
- 👤 Hideo Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:41
CPC Classifications
C; C07; C07C; C07C255/00; C07C61/00; C07C61/15; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3001; C09K19/3066; C09K19/3068
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
26 words
A trans-4-(trans-4'-alkylcyclohexyl)-cyclohexane carboxylic acid 4"'-cyanobiphenyl ester expressed by the formula ##STR4## wherein R denotes a straight-chain or branched alkyl group of 1 to 10 carbon atoms.
Claim 2
Dependent Claim
26 words
A trans-4-(trans-4'-alkylcyclohexyl)-cyclohexane carboxylic acid 4"'-cyanobiphenyl ester expressed by the formula ##STR4## wherein R denotes a straight-chain or branched alkyl group of 1 to 10 carbon atoms.
Claim 3
Dependent Claim
19 words
The compound according to claim 1, wherein R is a straight-chain alkyl group of 2 to 7 carbon atoms.
Claim 4
Dependent Claim
14 words
The compound according to claim 2, wherein R is C 3 H 7 .
Claim 5
Dependent Claim
41 words
A liquid crystal composition comprising a mixture of compounds at least one of which is a trans-4-(trans-4'-alkylcyclohexyl)-cyclohexane carboxylic acid 4"'-cyanobiphenyl ester expressed by the formula ##STR5## wherein R denotes a straight-chain or branched alkyl group of 1 to 10 carbon atoms.
Claim 6
Dependent Claim
41 words
A liquid crystal composition comprising a mixture of compounds at least one of which is a trans-4-(trans-4'-alkylcyclohexyl)-cyclohexane carboxylic acid 4"'-cyanobiphenyl ester expressed by the formula ##STR5## wherein R denotes a straight-chain or branched alkyl group of 1 to 10 carbon atoms.
Claim 7
Dependent Claim
18 words
The liquid crystal composition according to claim 4, comprising a compound of formula (I), 4-alkyl-4'-cyanobiphenyl, trans-4-alkyl-(4'-cyanophenyl)-cyclohexane and trans-4-alkyl-(4'-cyanobiphenyl)-cyclohexane.
References Cited (Backward Citations)
US4013582A
Cited
US4113647A
Cited
US4029595A
Cited
US4222887A
Cited
US4253740A
Cited
US4227778A
Cited
US4229315A
Cited
JPS5499785A
Cited
US4285829A
Cited
US4261652A
Cited
GB2031010A
Cited
US4228030A
Cited
EP0019665A1
Cited
EP0023728A1
Cited
EP0023730A1
Cited
EP0022882A1
Cited
EP0044646A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-06 | 1986-12-06 | 1987-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-06 | 1990-12-06 | 1991-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-06 | 1994-12-06 | 1995-06-07 | $7700.00 | Window Closed / Lapsed |