USE OF OPTICALLY ACTIVE 1,3-DIOXOLANE-4-CARBOXYLIC-ACID ESTERS AS

Optically active and mesogenic 1,3-dioxolane-4-carboxylic esters are suitable for use as dopants in liquid crystal mixtures. They lead to liquid-crystalline ferroelectric phases having short response times and to electroclinic phases having large electroclinic coefficients. Their particular advantag...

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Bibliographic Details
Main Authors MULLER INGRID, ESCHER CLAUS, WINGEN RAINER, OHLENDORF DIETER, HEMMERLING WOLFGANG, DUBAL, HANS - ROLF
Format Patent
LanguageEnglish
Korean
Published 13.01.1996
Edition6
Subjects
ADHESIVES
CHEMISTRY
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING
DYES
FREQUENCY-CHANGING
HETEROCYCLIC COMPOUNDS
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL LOGIC ELEMENTS
OPTICS
ORGANIC CHEMISTRY
PAINTS
PHYSICS
POLISHES
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Summary:Optically active and mesogenic 1,3-dioxolane-4-carboxylic esters are suitable for use as dopants in liquid crystal mixtures. They lead to liquid-crystalline ferroelectric phases having short response times and to electroclinic phases having large electroclinic coefficients. Their particular advantage is that they induce a helix of very large pitch, so that there is no need for any helix compensation by other dopants. Moreover, the 1,3-dioxolane-4-carboxylic esters exhibit high UV stability.
Bibliography:Application Number: KR19880004380