FR2357625A2 - Cristal liquide a grande anisotropie dielectrique negative et dispositif de visualisation utilisant un tel cristal liquide - Google Patents

Cristal liquide a grande anisotropie dielectrique negative et dispositif de visualisation utilisant un tel cristal liquide

Info

Publication number
FR2357625A2
FR2357625A2 FR7620768A FR7620768A FR2357625A2 FR 2357625 A2 FR2357625 A2 FR 2357625A2 FR 7620768 A FR7620768 A FR 7620768A FR 7620768 A FR7620768 A FR 7620768A FR 2357625 A2 FR2357625 A2 FR 2357625A2
Authority
FR
France
Prior art keywords
benzoate
alkyl
liquid crystal
nitro
alkoxy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7620768A
Other languages
English (en)
Other versions
FR2357625B2 (fr
Inventor
Alain Beguin
Jean-Claude Dubois
Annie Zann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thomson CSF SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7620768A priority Critical patent/FR2357625A2/fr
Priority to GB1420077A priority patent/GB1537463A/en
Priority to JP3858177A priority patent/JPS52123392A/ja
Priority to DE19772715519 priority patent/DE2715519C2/de
Publication of FR2357625A2 publication Critical patent/FR2357625A2/fr
Priority to US05/913,106 priority patent/US4173545A/en
Application granted granted Critical
Publication of FR2357625B2 publication Critical patent/FR2357625B2/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/06—Non-steroidal liquid crystal compounds
    • C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
    • C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
    • C09K19/20—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers
    • C09K19/2007—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers the chain containing -COO- or -OCO- groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Liquid Crystal Substances (AREA)

Abstract

L'addition a pour objet un cristal liquide capable de présenter le phénomène de diffusion dynamique de la lumière dans des conditions d'utilisation avantageuses. Le cristal liquide suivant l'addition est un mélange eutectique d'un cristal liquide nématique à la température ordinaire (par exemple paraméthoxy benzoate de parapentyl-phénol) et d'un composé mésomorphe de formule :
FR7620768A 1976-04-06 1976-07-07 Cristal liquide a grande anisotropie dielectrique negative et dispositif de visualisation utilisant un tel cristal liquide Granted FR2357625A2 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7620768A FR2357625A2 (fr) 1976-07-07 1976-07-07 Cristal liquide a grande anisotropie dielectrique negative et dispositif de visualisation utilisant un tel cristal liquide
GB1420077A GB1537463A (en) 1976-04-06 1977-04-04 Para-alkyl-phenyl substituted benzoyl oxybenzoates liquid crystal compositions thereof having high dielectric anisotropy and their use in electro-optical devices
JP3858177A JPS52123392A (en) 1976-04-06 1977-04-06 Liquid crystals having high negative dielectric anisotropy and mixture of said liquid crystals for improving dynamic scattering in electooptical apparatus and nematic liquid crystals
DE19772715519 DE2715519C2 (de) 1976-04-06 1977-04-06 Phenolcarbonsäureester und deren Verwendung als Flüssigkristall mit stark negativer dielektrischer Anisotropie
US05/913,106 US4173545A (en) 1976-04-06 1978-06-06 Liquid crystal with high negative dielectric anisotropy and mixtures of the same with nematic liquid crystals for improving dynamic scattering in electro-optic devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7620768A FR2357625A2 (fr) 1976-07-07 1976-07-07 Cristal liquide a grande anisotropie dielectrique negative et dispositif de visualisation utilisant un tel cristal liquide

Publications (2)

Publication Number Publication Date
FR2357625A2 true FR2357625A2 (fr) 1978-02-03
FR2357625B2 FR2357625B2 (fr) 1980-05-30

Family

ID=9175361

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7620768A Granted FR2357625A2 (fr) 1976-04-06 1976-07-07 Cristal liquide a grande anisotropie dielectrique negative et dispositif de visualisation utilisant un tel cristal liquide

Country Status (1)

Country Link
FR (1) FR2357625A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004489A1 (fr) * 1978-03-17 1979-10-03 Thomson-Csf Cristal liquide de type diester, mélange de ce cristal avec une phase, mesomorphe et dispositif de visualisation utilisant ce cristal
WO1982000654A1 (fr) * 1980-08-22 1982-03-04 S Belyaev Nouveaux derives de l'acide phenique, leur procede d'obtention, materiau a cristaux liquides avec anisotropie dielectrique negative, procede d'obtention de materiau de cristaux liquides, materiau de cristaux liquides avec inversion a basse frequence du signe de l'anisotropie dielectrique et procede d'obtention de ce materiau de cristaux liquides

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004489A1 (fr) * 1978-03-17 1979-10-03 Thomson-Csf Cristal liquide de type diester, mélange de ce cristal avec une phase, mesomorphe et dispositif de visualisation utilisant ce cristal
WO1982000654A1 (fr) * 1980-08-22 1982-03-04 S Belyaev Nouveaux derives de l'acide phenique, leur procede d'obtention, materiau a cristaux liquides avec anisotropie dielectrique negative, procede d'obtention de materiau de cristaux liquides, materiau de cristaux liquides avec inversion a basse frequence du signe de l'anisotropie dielectrique et procede d'obtention de ce materiau de cristaux liquides

Also Published As

Publication number Publication date
FR2357625B2 (fr) 1980-05-30

Similar Documents

Publication Publication Date Title
ES432595A1 (es) Procedimiento para la preparacion de un dielectrico para fi-nes electro-opticos.
DE3468860D1 (en) Nematic compounds
DE3064522D1 (en) Anisotropic compounds with negative or positive direct anisotropy and limited optical anisotropy, and liquid crystal mixtures containing them
GB1483497A (en) Esters of hydroxy-cyano-biphenyls having liquid crystal properties
JPS5523169A (en) Liquid crystal composition and display elements comprising it
JPS5734176A (en) Liquid crystal composition
GB1342214A (en) Liquid crystal compositions and devices
GB2015023A (en) Liquid-Crystal Mixture
FR2347427A1 (fr) Cristal liquide a grande anisotropie dielectrique negative, et dispositif de visualisation utilisant un tel cristal liquide
JPS5439040A (en) Novel 2-hydroxybenzamide derivatives and bactericides for the soil
FR2357625A2 (fr) Cristal liquide a grande anisotropie dielectrique negative et dispositif de visualisation utilisant un tel cristal liquide
GB1327133A (en) Memory liquid crystal material
DE3852422D1 (de) Optisch aktive 2-Biphenylpyrimidinderivate und diese enthaltende Flüssigkristallmischungen.
JPS5344535A (en) Liquid crystals
GB1295685A (fr)
DE2964269D1 (en) Anisotropic carboxylic-acid-4-cyclohexylphenyl esters and mixtures of liquid crystals containing them
GB1472836A (en) Nematic liquid crystal substances containing schiff bases derived from 2-substituted-1,4-phenylene-diamine
GB1412157A (en) Alkyl aryl methoxybenzoate and liquid crystal compositions containing it
JPS54101784A (en) Liquid crystal composition
JPS5785879A (en) Liquid crystal display device
JPS5749688A (en) Liquid crystal display element
FI863384A0 (fi) Oculoselektiva -blockerare.
FR2200239A1 (en) Alkyl or alkoxy phenols alkyl or alkoxy benzoate esters - useful as liquid crystals for use in recording systems
GB1427131A (en) Quaternary compounds of benzene derivatives and their use as sun-screening agents
JPS56164100A (en) Ferrite single crystal