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EP0219958A2
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EP
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Ferroelectric liquid crystal ester compound and liquid crystal composition
Assignee: JNC Corp
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Filing: 1986-09-05
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Granted: —
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Expires: 2006-09-05
Abstract
Abstract A novel ferroelectric liquid crystal compound exhibiting superior chiral smectic phases and a chiral smectic liquid crystal composition containing the same are provided, which compound is expressed by the formula <CHEM> wherein R1 represents an alkyl group of 1 to 15 carbon atoms; R2, an alkyl group of 2 to 15 carbon atoms; X, a single bond, -O- or -COO-; Y, -OCO- or -OCO-; k, 2 or 3; l and m, each 1 or 2; n, an integer of 0 to 5; and C having a symbol * attached thereto, unsymmetrical carbon atom, respectively.
Inventors
- 👤 Hiromichi Inoue
- 👤 Takashi Inukai
- 👤 Shinichi Saito
- 👤 Kazutoshi Miyazawa
- 👤 Kanetsugu Terashima
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 22:09
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/20; C09K19/2007; C09K19/2021
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
76 words
A ferroelectric liquid crystal compound expressed by the formula wherein R 1 represents an alkyl group of 1 to 15 carbon atoms; R 2 , an alkyl group of 2 to 15 carbon atoms; X , a single bond, -O- or -COO-; Y, -COO- or -OCO-; k, 2 or 3; 1 and m, each 1 or 2; n, an integer of O to 5; and C having a symbol * attached thereto, unsymmetrical carbon atom, respectively,
Claim 2
Dependent Claim
76 words
A ferroelectric liquid crystal compound expressed by the formula wherein R 1 represents an alkyl group of 1 to 15 carbon atoms; R 2 , an alkyl group of 2 to 15 carbon atoms; X , a single bond, -O- or -COO-; Y, -COO- or -OCO-; k, 2 or 3; 1 and m, each 1 or 2; n, an integer of O to 5; and C having a symbol * attached thereto, unsymmetrical carbon atom, respectively,
Claim 3
Dependent Claim
23 words
A compound according to claim 1 wherein R 1 in the formula (I) represents an alkyl group of 2 to 6 carbon atoms.
Claim 4
Dependent Claim
28 words
A compound according to claim 1 wherein R 2 in the formula (I) represents -C 2 H 5 and n therein represents an integer of 1 to 5.
Claim 5
Dependent Claim
22 words
A compound according to claim 1 wherein R 2 in the formula (I) represents -C 6 H 13 and n represents zero.
Claim 6
Dependent Claim
33 words
A chiral smectic liquid crystal composition containing at least two components at least one of which is a ferroelectric liquid crystal compound expressed by the formula (I) as set forth in claim 1.
Claim 7
Dependent Claim
41 words
A light-switching element constituted by the use of a chiral smectic liquid crystal composition containing at least two components at least one of which is a ferroelectric liquid crystal compound expressed by the formula (I) as set forth in claim 1.
References Cited (Backward Citations)
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