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Patent EP0402233A1 successfully refreshed from Google Patents.
EP0402233A1
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Liquid crystal compounds
Assignee: Showa Shell Sekiyu KK
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Filing: 1990-06-05
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Granted: —
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Expires: 2010-06-05
Abstract
Abstract Ferrelectric chiral smetic liquid crystal compound are provided which have the formula, for example or wherein R is a C 1-20 alkyl group.
Inventors
- 👤 Yoshiichi C/O Showa Shell Sekiyu K.K. Suzuki
- 👤 Hiroyuki C/O Showa Shell Sekiyu K.K. Mogamiya
- 👤 Ichiro C/O Showa Shell Sekiyu K.K. Kawamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 13:07
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/02; C09K19/0266; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/20; C09K19/2007; C09K19/2021
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
101 words
Liquid crystal compound of the formula wherein Ra is a C 1-20 alkyl group or a C 1-20 alkoxy group, Rb is a C 1-20 normal alkyl group, a branched alkyl group, an aralkyl group or an alkoxy group, X is a group or group, Y is a . group or a -group, Z is a fluorine-containing alkyl group or a halogen substituted group thereof, m is an integer from one to three, n is zero or an integer from one to two, p is zero or one but, when n is zero, p is zero, shows an optical activity center.
Claim 2
Dependent Claim
101 words
Liquid crystal compound of the formula wherein Ra is a C 1-20 alkyl group or a C 1-20 alkoxy group, Rb is a C 1-20 normal alkyl group, a branched alkyl group, an aralkyl group or an alkoxy group, X is a group or group, Y is a . group or a -group, Z is a fluorine-containing alkyl group or a halogen substituted group thereof, m is an integer from one to three, n is zero or an integer from one to two, p is zero or one but, when n is zero, p is zero, shows an optical activity center.
Claim 3
Dependent Claim
13 words
Liquid crystal compound according to claim 1, wherein Z is a trifluoromethyl group.
Claim 4
Dependent Claim
18 words
Liquid crystal compound according to claim 1 or 2, wherein m and n are independently one or two.
Claim 5
Dependent Claim
44 words
Liquid crystal compound according to any one of claim 1, 2 or 3, wherein Ra is a C 3 -C 15 normal alkyl group or a C 3 -C 16 normal alkoxy group and Rb is a C 3 -C 6 normal alkyl group.
References Cited (Backward Citations)
EP0327349A2
Cited
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