US4963288A
Expired / Lapsed
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Fluoroalkoxydiphenyl pyrimidine, liquid crystal composition and electro-optic element
Assignee: JNC Corp
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Filing: 1989-03-20
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Granted: 1990-10-16
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Expires: 2009-03-20
Abstract
Abstract New fluoroalkoxydiphenyl pyrimidines which are organic compounds having optically active groups, liquid crystal compositions containing the said compounds and electro-optic elements using the said compositions are provided. The compounds have the following general formula: ##STR1## wherein R 1 is an alkyl or alkoxy group having 1-20 carbon atoms, a halogen atom or a cyano group, R 2 is a straight-chain or branched chain alkyl group having 1-15 carbon atoms, --A-- is a group of ##STR2## X and Y independently indicate a hydrogen atom, a halogen atom or a cyano group, and * indicates that its carbon atom is an asymmetric carbon atom.
Inventors
- 👤 Shinichi Saito
- 👤 Kazutoshi Miyazawa
- 👤 Kouji Ohno
- 👤 Hiromichi Inoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:20
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/26; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/34; C09K19/3441; C09K19/345; C09K19/3458; C09K19/3463
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
43 words
A fluoroalkoxydiphenyl pyrimidine represented by the following formula: ##STR21## wherein R 1 is alkyl or alkoxy of 4-9 carbon atoms, R 2 is alkyl of 5-8 carbon atoms, --A-- is ##STR22## and * indicates that its carbon atom is an asymmetric carbon atom.
Claim 2
Dependent Claim
43 words
A fluoroalkoxydiphenyl pyrimidine represented by the following formula: ##STR21## wherein R 1 is alkyl or alkoxy of 4-9 carbon atoms, R 2 is alkyl of 5-8 carbon atoms, --A-- is ##STR22## and * indicates that its carbon atom is an asymmetric carbon atom.
Claim 3
Dependent Claim
58 words
A liquid crystal composition containing at least two components, at least one of which is a fluoroalkoxydiphenyl pyrimidine represented by the following formula: ##STR23## wherein R 1 is alkyl or alkoxy of 4-9 carbon atoms, R 2 is alkyl of 5-8 carbon atoms, --A-- is ##STR24## and * indicates that its carbon atom is an asymmetric carbon atom.
Claim 4
Dependent Claim
58 words
A liquid crystal composition containing at least two components, at least one of which is a fluoroalkoxydiphenyl pyrimidine represented by the following formula: ##STR23## wherein R 1 is alkyl or alkoxy of 4-9 carbon atoms, R 2 is alkyl of 5-8 carbon atoms, --A-- is ##STR24## and * indicates that its carbon atom is an asymmetric carbon atom.
Claim 5
Dependent Claim
19 words
The liquid crystal composition as claimed in claim 2, wherein the presented liquid phase is a chiral smectic phase.
Claim 6
Dependent Claim
19 words
The liquid crystal composition as claimed in claim 2, wherein the presented liquid phase is a chiral nematic phase.
Claim 7
Dependent Claim
55 words
An electro-optic element containing a liquid crystal composition which comprises at least one fluoroalkoxydiphenyl pyrimidine represented by the following formula: ##STR25## wherein R 1 is alkyl or alkoxy of 4-9 carbon atoms, R 2 is alkyl of 5-8 carbon atoms, --A-- is ##STR26## and * indicates that its carbon atom is an asymmetric carbon atom.
Claim 8
Dependent Claim
55 words
An electro-optic element containing a liquid crystal composition which comprises at least one fluoroalkoxydiphenyl pyrimidine represented by the following formula: ##STR25## wherein R 1 is alkyl or alkoxy of 4-9 carbon atoms, R 2 is alkyl of 5-8 carbon atoms, --A-- is ##STR26## and * indicates that its carbon atom is an asymmetric carbon atom.
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