FERROELECTRIC LIQUID CRYSTAL COMPOSITION

PURPOSE:To obtain the title composition which shows ferroelectric properties in a wide range of temperature, difficultly undergoes phase separation and is improved in film-forming properties and orientability by mixing a specified liquid crystal copolymer with a non-liquid crystal chiral compound. C...

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Bibliographische Detailangaben
Hauptverfasser:	HASHIMOTO KENJI, IDO MOTOHISA, YUASA KOYO
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON 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 MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS 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 MACROMOLECULAR COMPOUNDS PAINTS PHYSICS POLISHES TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain the title composition which shows ferroelectric properties in a wide range of temperature, difficultly undergoes phase separation and is improved in film-forming properties and orientability by mixing a specified liquid crystal copolymer with a non-liquid crystal chiral compound. CONSTITUTION:A diene compound of formula I (wherein r and p are each 2-5; m is 1-20; R is a group of formula II, III or the like; R is -COOR , -OR or-OCOR ; R is a group of formula IV; R and R are each -CH3 or halogen; a and d are each 0-10, provided that when R is -CH3, d is not 0; and b is 0-1) and a silicon compound (ii) of formula V (wherein q is 0-3) in an amount substantially equimolar to the amount of the dieve compound are hydrosilylatred in the presence of a catalyst in a solvent to obtain a liquid crystal copolymer containing units of formula VI and units of formula VII in a molar ratio of about 1:1. The copolymer is mixed with 5-95wt.% non-liquid crystal chiral compound to obtain the title composition.