EP0164814A2
Expired / Lapsed
EP
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Liquid crystalline ester compounds and mixtures thereof
Assignee: JNC Corp
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Filing: 1985-01-24
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Granted: —
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Expires: 2005-01-24
Abstract
Abstract Novel chiral smectic liquid crystalline ester compounds of superior stability and high response rate being suited for use in chiral smectic mixtures are of the formula wherein n represents an integer of 2 to 16; 1 represents 0, 1 or 2 and m represents 1 or 2, provided that the sum of (+m is at least 2; X represents a methylene group or a single bond when (=0, a methylene group or an ether linkage when (=1, or an ether linkage when ( = 2; Y represents R, OR, -COR, - OCOR, -OCOOR, or -COOR wherein R represents an alkyl group of 1 to 18 carbon atoms; and asterisk * shows an optically active carbon atom.
Inventors
- 👤 Hiromichi Inoue
- 👤 Shinichi Saito
- 👤 Kazutoshi Miyazawa
- 👤 Takashi Inukai
- 👤 Kanetsugu Terashima
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 23:05
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/20; C09K19/2007; C09K19/2021; C07; C07C; C07C51/00; C07C51/58; C07C51/60; C09K19/12; C09K19/126
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
97 words
A liquid crystalline ester compound expressed by the formula (I) wherein n represents an integer of 2 to 16; ℓ represents 0, 1 or 2 and m represents 1 or 2, provided that the sum of ℓ+m is at least 2; X represents a methylene group or a single bond when ℓ=0, a methylene group or an ether linkage when ℓ=1, or an ether linkage when ℓ=2; Y represents R, OR, -COR, -OCOR, -OCOOR, or -COOR wherein R represents an alkyl group of 1 to 18 carbon atoms; and asterisk * shows an optically active carbon atom.
Claim 2
Dependent Claim
97 words
A liquid crystalline ester compound expressed by the formula (I) wherein n represents an integer of 2 to 16; ℓ represents 0, 1 or 2 and m represents 1 or 2, provided that the sum of ℓ+m is at least 2; X represents a methylene group or a single bond when ℓ=0, a methylene group or an ether linkage when ℓ=1, or an ether linkage when ℓ=2; Y represents R, OR, -COR, -OCOR, -OCOOR, or -COOR wherein R represents an alkyl group of 1 to 18 carbon atoms; and asterisk * shows an optically active carbon atom.
Claim 3
Dependent Claim
35 words
2 . A compound according to claim 1, wherein X represents a methylene group, ℓ is 0, and m is 2, as expressed by the following formula (II): wherein n and Y are as defined.
Claim 4
Dependent Claim
34 words
A compound according to claim 1, wherein X represents a single bond, ℓ is 0, and m is 2, as expressed by the following formula (III) : wherein n and Y are as defined.
Claim 5
Dependent Claim
32 words
A compound according to claim 1, wherein X represents a methylene group, ℓ is 1 and m is 2, as expressed by the formula (IV): wherein n and Y are as defined.
Claim 6
Dependent Claim
32 words
A compound according to claim 1, wherein X represents an ether linkage, £ is 1 and m is 2, as expressed by the formula (Va) wherein n and Y are as defined.
Claim 7
Dependent Claim
32 words
A compound according to claim 1, wherein X represents an ether linkage, ℓ is 2 and m is 1, as expressed by the formula (Vb) wherein n and Y are as defined.
Claim 8
Dependent Claim
41 words
A compound according to claim 1. wherein n is 2 to 6, the sum of ℓ and m is 2 or 3, the group Y is -R, -OR, -OCOOR or -COOR and the group R has 5 to 14 carbon atoms.
Claim 9
Dependent Claim
26 words
A racemic form of a compound according to any preceding claim, corresponding to a compound of formula (I) in which the optical centre is not resolved.
Claim 10
Dependent Claim
27 words
A chiral smectic liquid crystal composition containing at least two components of which at least one is a compound according to any of claims 1 to 7.
Claim 11
Dependent Claim
18 words
A chiral smectic liquid crystal composition cosisting only of compounds according to any of claims 1 to 7.
References Cited (Backward Citations)
No citation records indexed.
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