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US4680137A
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Liquid crystal ester compound
Assignee: JNC Corp
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Filing: 1986-06-02
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Granted: 1987-07-14
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Expires: 2006-06-02
Abstract
Abstract A novel liquid crystal ester compound which is useful as a component for TN type nematic liquid crystal composition, raising its nematic-isotropic liquid phase-isotropic liquid phase transition point without increasing its viscosity and a liquid crystal composition containing the same are provided, which ester compound is expressed by the formula ##STR1## wherein R 1 represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms; ##STR2## represents ##STR3## Y represents -- COO--or --OCO--; any of ##STR4## n represents 0 or 1; and Z represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms, or a halogen atom of F, Cl or Br.
Inventors
- 👤 Toyoshiro Isoyama
- 👤 Tetsuya Ogawa
- 👤 Shigeru Sugimori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:20
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/32; C09K19/322; C09K2019/325
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
70 words
A liquid crystal ester compound expressed by the formula ##STR22## wherein R 1 represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms; ##STR23## represents ##STR24## Y represents --COO-- or --OCO--; any of ##STR25## in represents 0 or 1; and Z represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms, or a halogen atom of F, Cl or Br.
Claim 2
Dependent Claim
70 words
A liquid crystal ester compound expressed by the formula ##STR22## wherein R 1 represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms; ##STR23## represents ##STR24## Y represents --COO-- or --OCO--; any of ##STR25## in represents 0 or 1; and Z represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms, or a halogen atom of F, Cl or Br.
Claim 3
Dependent Claim
47 words
A liquid crystal ester compound expressed by the formula ##STR26## wherein R 1 and R 2 each represent an alkyl group or an alkoxy group each of 1 to 10 carbon atoms; ##STR27## represents ##STR28## Y represents --COO-- or --OCO--; ##STR29## and n is zero or 1.
Claim 4
Dependent Claim
47 words
A liquid crystal ester compound expressed by the formula ##STR26## wherein R 1 and R 2 each represent an alkyl group or an alkoxy group each of 1 to 10 carbon atoms; ##STR27## represents ##STR28## Y represents --COO-- or --OCO--; ##STR29## and n is zero or 1.
Claim 5
Dependent Claim
32 words
A liquid crystal ester compound expressed by the formula ##STR30## wherein R 1 and R 2 each represent an alkyl group or an alkoxy group each of 1 to 10 carbon atoms.
Claim 6
Dependent Claim
32 words
A liquid crystal ester compound expressed by the formula ##STR30## wherein R 1 and R 2 each represent an alkyl group or an alkoxy group each of 1 to 10 carbon atoms.
Claim 7
Dependent Claim
32 words
A liquid crystal ester compound expressed by the formula ##STR31## wherein R 1 and R 2 each represent an alkyl group or an alkoxy group each of 1 to 10 carbon atoms.
Claim 8
Dependent Claim
32 words
A liquid crystal ester compound expressed by the formula ##STR31## wherein R 1 and R 2 each represent an alkyl group or an alkoxy group each of 1 to 10 carbon atoms.
Claim 9
Dependent Claim
49 words
A liquid crystal ester compound expressed by the general formula ##STR32## wherein R 1 represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms; Y represents --COO--or --OCO--; Z represents a halogen atom of F, Cl or Br; and m represents 2 or 3.
Claim 10
Dependent Claim
49 words
A liquid crystal ester compound expressed by the general formula ##STR32## wherein R 1 represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms; Y represents --COO--or --OCO--; Z represents a halogen atom of F, Cl or Br; and m represents 2 or 3.
Claim 11
Dependent Claim
28 words
A liquid crystal ester compound expressed by the formula ##STR33## wherein R 1 represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms.
Claim 12
Dependent Claim
28 words
A liquid crystal ester compound expressed by the formula ##STR33## wherein R 1 represents an alkyl group or an alkoxy group each of 1 to 10 carbon atoms.
Claim 13
Dependent Claim
31 words
A liquid crystal composition having at least two components at least one of which is a liquid crystal ester compound expressed by the formula (I) as set forth in claim 1.
Claim 14
Dependent Claim
31 words
A liquid crystal composition having at least two components at least one of which is a liquid crystal ester compound expressed by the formula (II) as set forth in claim 2.
Claim 15
Dependent Claim
31 words
A liquid crystal composition having at least two components at least one of which is a liquid crystal ester compound expressed by the formula (V) as set forth in claim 5.
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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) | 1990-07-13 | 1991-01-12 | 1991-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-13 | 1995-01-12 | 1995-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-13 | 1999-01-12 | 1999-07-14 | $7700.00 | Window Closed / Lapsed |