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US4609485A
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US
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Bipyrimidinyl derivatives
Assignee: JNC Corp
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Filing: 1985-02-11
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Granted: 1986-09-02
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Expires: 2005-02-11
Abstract
Abstract A novel bipyrimidinyl derivative which is superior in practical properties and useful as a high temperature liquid crystal component constituting a physically and chemically stable liquid crystal composition is provided, which bipyrimidinyl derivative is a 2,5'-disubstituted-5,2'-bipyrimidinyl expressed by the formula ##STR1## wherein ##STR2## X represents a halogen atom of F, Cl or Br or cyano group or an alkyl group or an alkoxy group each having 1 to 10 carbon atoms and R represents an alkyl group or an alkoxy group each having 1 to 10 carbon atoms.
Inventors
- 👤 Kisei Kitano
- 👤 Tetsuya Ogawa
- 👤 Yasuyuki Goto
- 👤 Naoyuki Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:03
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; C09K19/3466
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
53 words
2,5'-Disubstituted-5,2'-bipyrimidinyls expressed by the formula ##STR8## wherein ##STR9## X represents a halogen atom of F, Cl or Br or cyano group or an alkyl group or an alkoxy group each having 1 to 10 carbon atoms and R represents an alkyl group or an alkoxy group each having 1 to 10 carbon atoms.
Claim 2
Dependent Claim
53 words
2,5'-Disubstituted-5,2'-bipyrimidinyls expressed by the formula ##STR8## wherein ##STR9## X represents a halogen atom of F, Cl or Br or cyano group or an alkyl group or an alkoxy group each having 1 to 10 carbon atoms and R represents an alkyl group or an alkoxy group each having 1 to 10 carbon atoms.
Claim 3
Dependent Claim
16 words
2-(p-Substituted-phenyl)-5'-alkyl-5,2'-bipyrimidinyls according to claim 1 wherein ##STR10## and X is as defined in said formula (I).
Claim 4
Dependent Claim
15 words
2-(Trans-4-alkylcyclohexyl)-5'-substituted-5,2'-bipyrimidinyls according to claim 1 wherein R is as defined above in said formula (I).
Claim 5
Dependent Claim
69 words
A liquid crystal composition having at least two components at least one of which is a 2,5'-disubstituted-5,2'-bipyrimidinyl expressed by the formula ##STR11## wherein ##STR12## X represents a halogen atom of F, Cl or Br or cyano group or an alkyl group or an alkoxy group each having 1 to 10 carbon atoms and R represents an alkyl group or an alkoxy group each having 1 to 10 carbon atoms.
Claim 6
Dependent Claim
69 words
A liquid crystal composition having at least two components at least one of which is a 2,5'-disubstituted-5,2'-bipyrimidinyl expressed by the formula ##STR11## wherein ##STR12## X represents a halogen atom of F, Cl or Br or cyano group or an alkyl group or an alkoxy group each having 1 to 10 carbon atoms and R represents an alkyl group or an alkoxy group each having 1 to 10 carbon atoms.
Claim 7
Dependent Claim
27 words
A liquid crystal composition according to claim 4 wherein the content of said 2,5'-disubstituted-5,2'-bipyrimidinyl is 2 to 10% by weight based on the weight of the composition.
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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) | 1989-09-01 | 1990-03-03 | 1990-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-01 | 1994-03-03 | 1994-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-01 | 1998-03-03 | 1998-09-02 | $7700.00 | Window Closed / Lapsed |