ES2041900T3 - Procedimiento de preparacion de cristales liquidos piramidales. - Google Patents

Procedimiento de preparacion de cristales liquidos piramidales.

Info

Publication number
ES2041900T3
ES2041900T3 ES198989112598T ES89112598T ES2041900T3 ES 2041900 T3 ES2041900 T3 ES 2041900T3 ES 198989112598 T ES198989112598 T ES 198989112598T ES 89112598 T ES89112598 T ES 89112598T ES 2041900 T3 ES2041900 T3 ES 2041900T3
Authority
ES
Spain
Prior art keywords
procedure
preparation
liquid crystals
pyramidal
pyramidal liquid
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.)
Expired - Lifetime
Application number
ES198989112598T
Other languages
English (en)
Inventor
Enrico Dalcanale
Stefanio Bonsignore
Giuseppe Cometti
Annick Du Vosel
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.)
Montedison SpA
Original Assignee
Montedison SpA
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 Montedison SpA filed Critical Montedison SpA
Application granted granted Critical
Publication of ES2041900T3 publication Critical patent/ES2041900T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C09K19/32—Non-steroidal liquid crystal compounds containing condensed ring systems, i.e. fused, bridged or spiro ring systems
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/11—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms
    • C07C37/115—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms using acetals
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2603/00—Systems containing at least three condensed rings
    • C07C2603/92—Systems containing at least three condensed rings with a condensed ring system consisting of at least two mutually uncondensed aromatic ring systems, linked by an annular structure formed by carbon chains on non-adjacent positions of the aromatic system, e.g. cyclophanes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Liquid Crystal Substances (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

SE DESCRIBEN DERIVADOS DODECA-SUBSTITUIDOS DE TETRAMEROS MACROCICLICOS, OBTENIDOS MEDIANTE CONDENSACION ACIDO-CATALIZADA DE PIROGALOL Y UN ALDEHIDO ALIFATICO, EN DONDE LOS SUSTITUYENTES SON GRUPOS ALQUENOMETANOIL. ESTOS TETRAMEROS SUBSTITUIDOS SON ANISOTROPOS OPTICAMENTE EN ESTADO FUNDIDO Y, EN PARTICULAR, MUESTRAN MESOFASES DEL TIPO PIRAMIDAL.FIG.
ES198989112598T 1988-07-11 1989-07-10 Procedimiento de preparacion de cristales liquidos piramidales. Expired - Lifetime ES2041900T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8821308A IT1226547B (it) 1988-07-11 1988-07-11 Cristalli liquidi piramidali.

Publications (1)

Publication Number Publication Date
ES2041900T3 true ES2041900T3 (es) 1993-12-01

Family

ID=11179872

Family Applications (1)

Application Number Title Priority Date Filing Date
ES198989112598T Expired - Lifetime ES2041900T3 (es) 1988-07-11 1989-07-10 Procedimiento de preparacion de cristales liquidos piramidales.

Country Status (5)

Country Link
EP (1) EP0350842B1 (es)
JP (1) JPH02111737A (es)
DE (1) DE68903440T2 (es)
ES (1) ES2041900T3 (es)
IT (1) IT1226547B (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8906031D0 (en) * 1989-03-16 1989-04-26 Ici Plc Compound
IT1230943B (it) * 1989-06-28 1991-11-08 Tecnopart Srl Cristalli liquidi piramidali ferroelettrici.
DE4011804A1 (de) * 1990-04-12 1991-10-24 Hoechst Ag Verwendung von makrocyclischen verbindungen als komponente fuer ferroelektrische fluessigkristallmischungen
IT1238230B (it) * 1989-12-06 1993-07-12 Tecnopart Srl Miscele di cristalli liquidi colonnari piramidali e procedimento per la loro preparazione
IT1248713B (it) * 1990-06-08 1995-01-26 Siac It Additivi Carburanti Composizioni di idrocarburi di raffinazione dotate di migliorata fluidita' alle basse termperature
EP0529439B1 (de) * 1991-08-17 1996-02-14 Hoechst Aktiengesellschaft Schaltbare kolumnare flüssigkristalline Systeme
JP6701611B2 (ja) * 2017-10-05 2020-05-27 Dic株式会社 液晶組成物及び液晶表示素子

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1222085B (it) * 1987-07-21 1990-08-31 Montedison Spa Tetrameri ciclici liquido cristallini

Also Published As

Publication number Publication date
EP0350842A3 (en) 1990-05-16
IT1226547B (it) 1991-01-24
DE68903440T2 (de) 1993-05-27
IT8821308A0 (it) 1988-07-11
EP0350842A2 (en) 1990-01-17
EP0350842B1 (en) 1992-11-11
JPH02111737A (ja) 1990-04-24
DE68903440D1 (de) 1992-12-17

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