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EP0332392A2
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Dioxane liquid crystal compounds
Assignee: Showa Shell Sekiyu KK
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Filing: 1989-03-07
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Granted: —
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Expires: 2009-03-07
Abstract
Abstract Novel ferromagnetic liquid crystal compounds of the invention, which comprises those showing tristable liquid crystal phase S (3 , have a wide range of phase transition points so as to be not only preferably used solely as display element material but also mixeo with any other liquid crystal to desiredly expand the above range wider and make optical response time faster. Typical compounds are represented by in which Z means CF 3 , C 2 Fs, CHF 2 CH 2 F, CIIF 2 , CCl 2 F, CF 3 CCl 2 or C 3 F 7 m' and n' are same'or different witn each other and each is an integer of 1 - 20.
Inventors
- 👤 Yoshiichi C/O Showa Shell Sekiyu K.K. Suzuki
- 👤 Takashi C/O Showa Shell Sekiyu K.K. Hagiwara
- 👤 Koichi C/O Showa Shell Sekiyu K.K. Numazawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 11:16
CPC Classifications
C; C09; C09K; C09K19/00; C09K19/02; C09K19/0266; C07; C07D; C07D319/00; C07D319/04; C07D319/06; C09K19/04; C09K19/06; C09K19/34; C09K19/3402; C09K2019/3422
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
132 words
Liquid crystal compounds represented by the general formula (I) in which R 1 means an alkyl, alkoxy, alkyloxycarbonyl or alkylcarbonyloxy group of 1 - 20 carbon atoms; (A) means or X means wherein R' is hydrogen, methyl or ethyl and - is an integer of 116; (B) means or Y means and R 2 means Z -(CH 2 ) m -CH-R 3 or wherein R 3 is a straight or branched alkyl, aralkyl, alkoxyalkyl, alkoxycarbonyl or alkoxycarbonylalkyl group of 1 - 20 carbon atoms, a substituted vinyl, substituted cyclopropyl or substituted epoxy group; Z is CF 3 , C 2 Fs, CHF 2 , CH 2 F, CCIF 2 , CCL 2 F, CF 3 CCI 2 or C 3 F 7 ; and m is an integer of 0 - 20.
Claim 2
Dependent Claim
132 words
Liquid crystal compounds represented by the general formula (I) in which R 1 means an alkyl, alkoxy, alkyloxycarbonyl or alkylcarbonyloxy group of 1 - 20 carbon atoms; (A) means or X means wherein R' is hydrogen, methyl or ethyl and - is an integer of 116; (B) means or Y means and R 2 means Z -(CH 2 ) m -CH-R 3 or wherein R 3 is a straight or branched alkyl, aralkyl, alkoxyalkyl, alkoxycarbonyl or alkoxycarbonylalkyl group of 1 - 20 carbon atoms, a substituted vinyl, substituted cyclopropyl or substituted epoxy group; Z is CF 3 , C 2 Fs, CHF 2 , CH 2 F, CCIF 2 , CCL 2 F, CF 3 CCI 2 or C 3 F 7 ; and m is an integer of 0 - 20.
Claim 3
Dependent Claim
84 words
Liquid crystal compounds as set forth in Claim 1, in the formula (I) of which R 2 means a radical derived from any of optically active alcohols; 1,1,1-trifluoro-2-C 6 - C 16 alkanol, 1,1-difluoro-2-C 6 - C 16 alkanol, 1-monofluoro-2-C 6 - C 16 alkanol, 1,1,1,2,2-pentafluoro-3-C 6 - C 16 alkanol, 1-monofluoro-1,1-dichloro-2-C 6 - C 16 alkanol, 1,1,1-trichloro-2-C 6 - C 16 alkanol, 1,1-difluoro-1-monochloro-2-C 6 - C 16 alkanol, 1,1,1-trifluoromethyl-1-phenylmethanol, 1,1,1-trifluoromethyl-2-phenylethanol, 1,1,1-trifluoromethyl-3-phenylpropanol, 1,1,1-trifluoro-3-decene-2-al, 1,1,1-trifluoro-3-heptene-2-al, methyl-4,4,4-trifluoro-3-hydroxybutylate, ethyl-4,4,4-trifluoro-3-hydroxybutylate, propyl-4,4,4-trifluoro-3-hydroxybutylate, butyl-4,4,4-trifluoro-3-hydroxybutylate, pentyl-4,4,4-trifluoro-3-hydroxybutylate, hexyl-4,4,4-trifluoro-3-hydroxybutylate, octyl-4,4,4-trifluoro-3-hydroxybutylate, nonyl-4,4,4-trifluoro-3-hydroxybutylate and decyl-4,4,4-trifluoro-3-hydroxybutylate.
Claim 4
Dependent Claim
99 words
Liquid crystal compounds as set forth in Claim 1, in the formula (I) of which R 1 means an alkylo, alkoxy, alkyloxycarbonyl or alkylcarbonyloxy group of 4 - 20 carbon atoms; (A) means or X means (B) means Y means and R 2 means or wherein R 3 is a straight or branched alkyl group of 3 - 15 carbon atoms; Z is CH 3 , C 2 F 5 , CHF 2 , CCIF 2 , CCL 2 F, CF 3 CCL 2 or C 3 F 7 ; and m is an integer of 0 - 15.
Claim 5
Dependent Claim
94 words
Liquid crystal compounds as set forth in Claim 1, in the formula (I) of which R 1 means C n H 2n+1 , CnH2n+10, wherein n is an integer of 5 - 10; (A) means or X means (B) means Y means and R 2 means or wherein R 3 is a straight or branched alkyl broup of 3 - 15 carbon atoms; Z is CF 3 , C 2 F 5 or C 3 F 7 ; m is an integer of 0 - 10 and n is an integer of 5 -10.
Claim 6
Dependent Claim
70 words
Liquid crystal compounds as set forth in Claim 2, in the formula (I) of which R 2 means the radical derived from any of optically active alcohols; 1,1,1-trifluoro-2-C 6 - C 16 alkanol, 1,1-difluoro-2-C 6 - C 16 alkanol, 1-monofluoro-2-C 6 - C 16 alkanol, 1,1,1,2,2-pentafluoro-3-C 6 - C 16 alkanol, 1-monofluoro-1,1-dichloro-2-C 6 - C 16 alkanol, 1,1,1-trichloro-2-C 6 - C 16 alkanol and 1,1-diifluoro-1-monochloro-2-C 6 - C 16 alkanol.
Claim 7
Dependent Claim
111 words
Liquid crystal compounds as set forth in Claim 1, in the formula (I) of which R 1 means an alkyl, alkoxy, alkyloxycarbonyl or alkylcarbonyloxy group of 5 - 20 carbon atoms; (A) means X means (B) means Y means and R 2 means Z -(CH 2 )m- CH-R 3 wherein R 3 is a straight or branched alkyl group of 3 - 15 carbon atoms, Z is CF 3 , C 2 F 5 , CHF 2 , CH 2 F, CCIF 2 , CCI 2 F or CF 3 CCI 2 ; and m is an integer of 0 - 3, so as to show a tristable liquid crystal phase.
Claim 8
Dependent Claim
104 words
Liquid crystal compounds as set forth in Claim 6, in which, R 1 means a straight chain alkyl or alkoxy group respectrively represented by the formula, C n H 2n+1 or C n H 2n+1 O wherein n is an integer of 6 -10; (A) means X means (B) means Y means and R 2 means Z -(CH 2 )m- C H-C n H 2n+1 wherein Z is CF 3 or C 2 F 5 m is an integer of 0 or 1 and n is an integer of 5, 6, 8, 9, or 10, so as to show a tristable liquid crystal phase.
Claim 9
Dependent Claim
65 words
Liquid crystal compounds as set forth in Claim 6, in which R 2 means a radical derived from any of optically active alcohols; 1,1,1-trifluoro-2-C 6 - C 16 alkanol, 1,1-difluoro-2-C 6 - C1s alkanol, 1-monofluoro-2-C 6 - C 16 alkanol, 1,1,1,2,2-pentafluoro-3-C 6 - C 16 alkanol, 1-monofluoro-1,1-dichloro-2-C 6 - C 16 alkanol, 1,1,1-trichloro-2-C 6 - C 16 alkanol and 1,1-diifluoro-1-monochloro-2-C 6 - C 16 alkanol.
Claim 10
Dependent Claim
19 words
Liquid crystal compound as set forth in Claim 1, which is (R)-(+)-4'-(1-trifluoromethylnonyloxycarbo- nyl) phenyl 4-(5-pentyl-trans-1,3-dioxane-2-yl) benzoate of the formula;
Claim 11
Dependent Claim
23 words
Liquid crystal compound as set forth in Claim 1, which is 4'-(1-trifluoromethylheptyloxycarbonyl)phenyl 4-(5-n-nonyl-trans-1,3-dioxane-2-yl)-benzoate showing a tristable liquid crystal phase and of the formula;
Claim 12
Dependent Claim
18 words
Liquid crystal compound as set forth in Claim 1, which is (R)-(+)-4-(1-trifluoromethyl-2-ethoxycarbo- nyloxycarbonyl)-phenyl 4-(5-n-pentyl-trans-1,3-dioxane-2-yl) benzoate of the formula;
References Cited (Backward Citations)
No citation records indexed.
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