Title:
VINYLENE COMPOUNDS AND LIQUID-CRYSTAL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/1997/030966
Kind Code:
A1
Abstract:
Liquid-crystal compounds represented by the general formula (1): Ra-A1-Z1-A2-Z2-A3-(-Z3-A4-)-m-Rb and having a liquid-crystal phase over a wide temperature range, a low viscosity, and an improved threshold voltage; a liquid-crystal composition; and a liquid-crystal display element containing the liquid-crystal composition (1), wherein Ra represents C1-20 alkyl in which at least one -CH2- may be replaced with -O-, etc. and at least one hydrogen atom may be replaced with a halogen atom; Rb is the same as Ra or is halogeno or cyano; A1, A2, A3, and A4 each independently represents a divalent ring group; Z1, Z2, and Z3 each independently represents C2-C4 alkenylene, -COO-, a covalent bond, etc., provided that at least one of Z1, Z2, and Z3 represents C2-C4 alkenylene and at least one of them represents -COO- or -OCO-; and m is 0 or 1.
Inventors:
KONDO TOMOYUKI (JP)
MATSUI SHUICHI (JP)
MIYAZAWA KAZUTOSHI (JP)
SEKIGUCHI YASUKO (JP)
NAKAGAWA ETSUO (JP)
MATSUI SHUICHI (JP)
MIYAZAWA KAZUTOSHI (JP)
SEKIGUCHI YASUKO (JP)
NAKAGAWA ETSUO (JP)
Application Number:
PCT/JP1997/000312
Publication Date:
August 28, 1997
Filing Date:
February 07, 1997
Export Citation:
Assignee:
CHISSO CORP (JP)
KONDO TOMOYUKI (JP)
MATSUI SHUICHI (JP)
MIYAZAWA KAZUTOSHI (JP)
SEKIGUCHI YASUKO (JP)
NAKAGAWA ETSUO (JP)
KONDO TOMOYUKI (JP)
MATSUI SHUICHI (JP)
MIYAZAWA KAZUTOSHI (JP)
SEKIGUCHI YASUKO (JP)
NAKAGAWA ETSUO (JP)
International Classes:
C07C69/75; C07C69/753; C07C69/76; C07D213/79; C07D213/80; C07D239/28; C07D239/34; C07D319/06; C09K19/04; C09K19/30; (IPC1-7): C07C69/75; C07C69/76; C07D213/24; C07D319/06; C07D239/24; C09K19/20; C09K19/30; C09K19/34; G02F1/13
Foreign References:
| JPH055905A | 1993-01-14 | |||
| JPS611664A | 1986-01-07 | |||
| JPS62502966A | 1987-11-26 | |||
| FR2404040A1 | 1979-04-20 | |||
| JPH04330019A | 1992-11-18 |
Other References:
NATO ASI SER., SER. B, (1987), Vol. 166, A.M. LEVELUT, "X-Ray Diffraction by Incommensurate Liquid Crystals", pages 283-296.
J. PHYSIQUE LETT., (1985), Vol. 46, G. SIGAUD, "Generation of the Polymorphism With 2D Fluid Smectic Phases", pages 825-830.
LIQUID CRYSTALS, (1991), Vol. 10, No. 2, S.M. KELLY, "Four Unit Linking Groups IV. Liquid Crystals of Positive Dielectric Anisotropy", pages 273-287.
MACROMOLECULES, (1993), Vol. 26, No. 17, J. PIERRE LEBLANC, "Aromatic Copolyesters With Stilbene Mesogenic Groups. 1. Liquid Crystalline Properties of Compounds Containing a Stilbene, Terephtaloyl, or Hydroquinone Central Group", pages 4391-4399.
LIQUID CRYSTALS, (1993), Vol. 13, No. 1, BLANCA F. BONINI, "New Mesogenic Compounds With Trans-Stilbene Oxide as the Central Chiral Core", pages 13-22.
MOL. CRYST. LIQ. CRYST., (1984), Vol. 106, MITSUHIRO KODEN, "Liquid Crystallinities of Some Homologous Series Havind Bent Linkage -CO-, -O-, -S- and -CH2-", pages 31-44.
MOL. CRYST. LIQ. CRYST., (1983), Vol. 91, NGUYEN HUU TINH, "Reentrant Behavior and Cyano Substituted Aryl p-Alkoxycinnamates", pages 285-294.
MOL. CRYST. LIQ. CRYST., (1983), Vol. 98, C. DRUON, "Study of SA Phase Structure Using Dielectric Relaxation", pages 201-208.
MOL. CRYST. LIQ. CRYST., (1985), Vol. 127, C. DESTRADE, "Chirality in Mesogens: Reentrant Cholesteric and New Smectic Phases", pages 273-282.
See also references of EP 0885875A4
J. PHYSIQUE LETT., (1985), Vol. 46, G. SIGAUD, "Generation of the Polymorphism With 2D Fluid Smectic Phases", pages 825-830.
LIQUID CRYSTALS, (1991), Vol. 10, No. 2, S.M. KELLY, "Four Unit Linking Groups IV. Liquid Crystals of Positive Dielectric Anisotropy", pages 273-287.
MACROMOLECULES, (1993), Vol. 26, No. 17, J. PIERRE LEBLANC, "Aromatic Copolyesters With Stilbene Mesogenic Groups. 1. Liquid Crystalline Properties of Compounds Containing a Stilbene, Terephtaloyl, or Hydroquinone Central Group", pages 4391-4399.
LIQUID CRYSTALS, (1993), Vol. 13, No. 1, BLANCA F. BONINI, "New Mesogenic Compounds With Trans-Stilbene Oxide as the Central Chiral Core", pages 13-22.
MOL. CRYST. LIQ. CRYST., (1984), Vol. 106, MITSUHIRO KODEN, "Liquid Crystallinities of Some Homologous Series Havind Bent Linkage -CO-, -O-, -S- and -CH2-", pages 31-44.
MOL. CRYST. LIQ. CRYST., (1983), Vol. 91, NGUYEN HUU TINH, "Reentrant Behavior and Cyano Substituted Aryl p-Alkoxycinnamates", pages 285-294.
MOL. CRYST. LIQ. CRYST., (1983), Vol. 98, C. DRUON, "Study of SA Phase Structure Using Dielectric Relaxation", pages 201-208.
MOL. CRYST. LIQ. CRYST., (1985), Vol. 127, C. DESTRADE, "Chirality in Mesogens: Reentrant Cholesteric and New Smectic Phases", pages 273-282.
See also references of EP 0885875A4
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