EP0153826A2
Expired / Lapsed
EP
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Liquid-crystalline substituted biphenyl esters
Assignee: JNC Corp
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Filing: 1985-02-07
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Granted: —
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Expires: 2005-02-07
Abstract
Abstract Noveferroelectric liquid crystals exhibiting a chiral smectic C phase and for use in liquid crystal compositions are substituted biphenyl esters expressed by the general formula wherein R 1 * represents an optically active alkyl group of 1 to 18 carbon atoms; represents Z represehts R 2 , R 2 CO or R 2 COO wherein R 2 represents an alkyl group or an alkoxy group each of 1 to 18 carbon atoms; and X and Y each represent hydrogen atom (H), bromine atom (Br), chlorine atom (Cℓ), fluorine atome (F) or cyano group (CN), and either one of X or Y is always hydrogen atom.
Inventors
- 👤 Shinichi Saito
- 👤 Kanetsugu Terashima
- 👤 Takashi Inukai
- 👤 Kenji Furukawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 08:27
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/30; C09K19/3001; C09K19/3066; C09K19/3068; C09K19/10; C09K19/20; C09K19/2007; C09K19/2021
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
83 words
A substituted biphenyl ester expressed by the general formula wherein R 1 * represents an optically active alkyl group of 4 to 18 carbon atoms; the group represents or Z represents R 2 -, R 2 CO- 5 or R 2 COO-. wherein R 2 represents an alkyl group or an alkoxy group each of 1 to 18 carbon atoms; and X and Y each represent hydrogen, bromine, chlorine, fluorine or a cyano group, provided that one of X or Y is hydrogen.
Claim 2
Dependent Claim
83 words
A substituted biphenyl ester expressed by the general formula wherein R 1 * represents an optically active alkyl group of 4 to 18 carbon atoms; the group represents or Z represents R 2 -, R 2 CO- 5 or R 2 COO-. wherein R 2 represents an alkyl group or an alkoxy group each of 1 to 18 carbon atoms; and X and Y each represent hydrogen, bromine, chlorine, fluorine or a cyano group, provided that one of X or Y is hydrogen.
Claim 3
Dependent Claim
14 words
A compound according to claim 1 wherein R 1 * represents a 2-methylbutyl group.
Claim 4
Dependent Claim
16 words
A compound according to claim 1 or 2 wherein X represents Br and Y represents H.
Claim 5
Dependent Claim
16 words
A compound according to claim 1 or 2 wherein X represents CN and Y represents H.
Claim 6
Dependent Claim
16 words
A compound according to claim 1 or 2 wherein X represents H and Y represents Br.
Claim 7
Dependent Claim
20 words
A compound according to any preceding claim, wherein R 1 has 4 to 12, preferably 7 or 8, carbon atoms.
Claim 8
Dependent Claim
17 words
A racemic compound corresponding to a compound of formula (I) wherein R 1 * is not resolved.
Claim 9
Dependent Claim
17 words
A racemic compound corresponding to a compound of formula (I) wherein R 1 * is not resolved.
Claim 10
Dependent Claim
28 words
A chiral smectic liquid crystal composition comprising a mixture of compounds, at least one of which is a compound as defined in any of claims 1 to 7.
Claim 11
Dependent Claim
21 words
A chiral smectic liquid crystal composition consisting of a plurality of compounds as defined in any of claims 1 to 6.
Claim 12
Dependent Claim
18 words
A light-switching element employing a chiral smectic liquid crystal composition as set forth in claim 8 or 9.
References Cited (Backward Citations)
No citation records indexed.
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