EP0313284A2
Expired / Lapsed
EP
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2,5-Diphenyl pyrimidine compounds and liquid crystal compositions containing them
Assignee: JNC Corp
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Filing: 1988-10-17
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Granted: —
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Expires: 2008-10-17
Abstract
Abstract Optically active 2,5-diphenyl pyrimide compounds, for use in liquid crystal composition have the formula: <CHEM> in which R<1> is a C1-C20 alkoxy group; R<2> is an alkyl, acyl or alkoxyacyl group containing up to 20 carbon atoms; <CHEM> and * indicates an asymmetric carbon atom. s
Inventors
- 👤 Kazutoshi Miyazawa
- 👤 Makoto Ushioda
- 👤 Hiromichi Inoue
- 👤 Shinichi Saito
- 👤 Kouji Ohno
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 21:45
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/32; C07D239/34; 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
34 words
Optically active compounds of the formula: in which R¹ is a C₁-C₂₀ alkoxy group; R² is an alkyl, acyl or alkoxyacyl group containing up to 20 carbon atoms; and indicates an asymmetric carbon atom.
Claim 2
Dependent Claim
34 words
Optically active compounds of the formula: in which R¹ is a C₁-C₂₀ alkoxy group; R² is an alkyl, acyl or alkoxyacyl group containing up to 20 carbon atoms; and indicates an asymmetric carbon atom.
Claim 3
Dependent Claim
14 words
Compounds as claimed in calim 1 in which R¹ is a C₄-C₁₂ alkyl group.
Claim 4
Dependent Claim
23 words
Compounds as claimed in claim 1 or claim 2 in which R² is an alkyl, acyl or alkoxyacyl group containing 4-8 carbon atoms.
Claim 5
Dependent Claim
28 words
A liquid crystal composition comprising at least two components, at least one of which is an optically active compound as claimed in any one of the preceding claims.
Claim 6
Dependent Claim
19 words
A liquid crystal composition as claimed in claim 4, in which the liquid phase is a chiral smectic phase.
Claim 7
Dependent Claim
19 words
A liquid crystal composition as claimed in claim 4, in which the liquid phase is a chiral nematic phase.
Claim 8
Dependent Claim
13 words
An electro-optical element including a liquid crystal composition as claimed in claim 4.
References Cited (Backward Citations)
No citation records indexed.
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