US4684476A
Expired / Lapsed
US
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Pyrimidine derivative and liquid crystal composition containing same
Assignee: JNC Corp
•
Filing: 1986-02-11
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Granted: 1987-08-04
•
Expires: 2006-02-11
Abstract
Abstract A novel pyrimidine derivative which, when used as a component of a liquid crystal composition, is useful for driving a liquid crystal cell containing the composition at low voltages, and a liquid crystal composition containing the same are provided, which pyrimidine derivative is expressed by the formula ##STR1## wherein n represents an integer of 0 or 1; R represents an alkyl or alkoxy group of 1 to 10 carbon atoms; and X 1 , X 2 and X 3 each represent hydrogen atom, F, Cl or Br as halogeno group, cyano group or trifluoromethyl group and at least one of X 1 , X 2 and X 3 is trifluoromethyl group.
Inventors
- 👤 Kisei Kitano
- 👤 Tetsuya Ogawa
- 👤 Yoshito Furukawa
- 👤 Naoyuki Yoshida
- 👤 Shigeru Sugimori
- 👤 Yasuyuki Goto
- 👤 Toyoshiro Isoyama
- 👤 Kazunori Nigorikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:19
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/26; C07D239/28; C07D239/32; C07D239/34; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/34; C09K19/3441; C09K19/345; C09K19/3458; C09K19/3469
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
31 words
A pyrimidine compound expressed by the formula ##STR7## wherein n represents an integer of 0 or 1 and R represents an alkyl or alkoxy group of 1 to 10 carbon atoms.
Claim 2
Dependent Claim
31 words
A pyrimidine compound expressed by the formula ##STR7## wherein n represents an integer of 0 or 1 and R represents an alkyl or alkoxy group of 1 to 10 carbon atoms.
Claim 3
Dependent Claim
26 words
A pyrimidine derivative according to claim 1 expressed by the formula ##STR8## wherein R represents an alkyl or alkoxy group of 1 to 10 carbon atoms.
Claim 4
Dependent Claim
26 words
A pyrimidine derivative according to claim 1 expressed by the formula ##STR9## wherein R represents an alkyl or alkoxy group of 1 to 10 carbon atoms.
Claim 5
Dependent Claim
57 words
A liquid crystal composition comprising at least two components, a first component including at least one liquid crystalline compound and a second component including at least one pyrimidine compound expressed by the formula ##STR10## wherein n represents an integer of 0 or 1 and R represents an alkyl or alkoxy group of 1 to 10 carbon atoms.
Claim 6
Dependent Claim
57 words
A liquid crystal composition comprising at least two components, a first component including at least one liquid crystalline compound and a second component including at least one pyrimidine compound expressed by the formula ##STR10## wherein n represents an integer of 0 or 1 and R represents an alkyl or alkoxy group of 1 to 10 carbon atoms.
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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) | 1990-08-03 | 1991-02-02 | 1991-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-03 | 1995-02-02 | 1995-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-03 | 1999-02-02 | 1999-08-04 | $7700.00 | Window Closed / Lapsed |