US4659501A
Expired / Lapsed
US
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2-cyano-4-halogenophenyl substituted-benzoates
Assignee: JNC Corp
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Filing: 1985-01-17
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Granted: 1987-04-21
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Expires: 2005-01-17
Abstract
Abstract Novel liquid crystal compounds, 2-cyano-4-halogenophenyl substituted-benzoates suitable as a component constituting a liquid crystal composition which exhibits a negative dielectric anisotropy, and a liquid crystal composition containing the same are provided, which benzoates are expressed by the formula <IMAGE> wherein R represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms; <IMAGE> represents <IMAGE> or <IMAGE> X and Y each represents H or a halogen atom of F or Cl and at least one of X and Y is necessarily H; and Z represents a halogen atom of F, Cl or Br.
Inventors
- 👤 Shigeru Sugimori
- 👤 Toyoshiro Isoyama
- 👤 Yasuyuki Goto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:06
CPC Classifications
C; C07; C07C; C07C255/00; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/20; C09K19/2007; C09K19/30; C09K19/3001; C09K19/3066; C09K19/3068
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
65 words
A 2-cyano-4-halogenophenyl substituted-benzoate expressed by the formula ##STR55## wherein R represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms; ##STR56## represents ##STR57## or ##STR58## X and Y each represent H or a halogen atom of F or Cl and at least one of X and Y is necessarily H; and Z represents a halogen atom of F or Cl.
Claim 2
Dependent Claim
65 words
A 2-cyano-4-halogenophenyl substituted-benzoate expressed by the formula ##STR55## wherein R represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms; ##STR56## represents ##STR57## or ##STR58## X and Y each represent H or a halogen atom of F or Cl and at least one of X and Y is necessarily H; and Z represents a halogen atom of F or Cl.
Claim 3
Dependent Claim
24 words
A 2-cyano-4-halogenophenyl 4-(trans-4-substituted cyclohexylcarbonyloxy)benzoate according to claim 1 and expressed by the formula ##STR59## wherein R and Z are as defined in claim 1.
Claim 4
Dependent Claim
24 words
A 2-cyano-4-halogenophenyl 4-(4-substituted benzoyloxy)-benzoate according to claim 1 and expressed by the formula ##STR60## wherein R and Z are as defined in claim 1.
Claim 5
Dependent Claim
30 words
A 2-cyano-4-halogenophenyl 2-halogeno-4-(trans-4-substituted cyclohexylcarbonyloxy)benzoate according to claim 1 and expressed by the formula ##STR61## wherein R and Z are as defined in claim 1 and Y represents F or Cl.
Claim 6
Dependent Claim
30 words
A 2-cyano-4-halogenophenyl 2-halogeno-4-(4-substituted benzoyloxy)benzoate according to claim 1 and expressed by the formula ##STR62## wherein R and Z are as defined in claim 1 and Y represents F or Cl.
Claim 7
Dependent Claim
30 words
A 2-cyano-4-halogenophenyl 3-halogeno-4-(trans-4-substituted cyclohexylcarbonyloxy)benzoate according to claim 1 and expressed by the formula ##STR63## wherein R and Z are as defined in claim 1 and X represents F or Cl.
Claim 8
Dependent Claim
30 words
A 2-cyano-4-halogenophenyl 3-halogeno-4-(4-substituted benzoyloxy)benzoate according to claim 1 and expressed by the formula ##STR64## wherein R and Z are as defined in claim 1 and X represents F or Cl.
Claim 9
Dependent Claim
25 words
A liquid crystal composition having at least two components at least one of which is selected from the 2-cyano-4-halogenophenyl substituted-benzoates set forth in claim 1.
Claim 10
Dependent Claim
34 words
A liquid crystal composition according to claim 8 wherein said liquid crystal composition is nematic and the content of 2-cyano-4-halogenophenyl substituted-benzoates in the composition is in the range of 1 to 30% by weight.
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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) | 1990-04-20 | 1990-10-20 | 1991-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-20 | 1994-10-20 | 1995-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-20 | 1998-10-20 | 1999-04-21 | $7700.00 | Window Closed / Lapsed |