ELECTROPHORETIC MEDIA WITH IMPROVED BINDER

ELECTROPHORETIC MEDIA WITH IMPROVED BINDER

An electrophoretic medium comprises discrete droplets of an electrophoretic internal phase comprising a fluid and carbon black particles in the fluid. The droplets are surrounded by a polyurethane binder formed by a diisocyanate and a polyether diol, at least 20 mole per cent of the diisocyanate bei...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: CAO, LAN, GATES, ELIZABETH, M, MILLER, DAVID, D, DANNER, GUY, M, PAOLINI, JR., RICHARD, J
Format: Patent
Sprache:eng ; fre
Schlagworte:
APPARATUS THEREFOR
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
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS
FREQUENCY-CHANGING
METALLURGY
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICAL LOGIC ELEMENTS
OPTICS
PHYSICS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:An electrophoretic medium comprises discrete droplets of an electrophoretic internal phase comprising a fluid and carbon black particles in the fluid. The droplets are surrounded by a polyurethane binder formed by a diisocyanate and a polyether diol, at least 20 mole per cent of the diisocyanate being an aromatic diisocyanate. Selon l'invention, un milieu électrophorétique contient des gouttelettes discrètes d'une phase interne électrophorétique renfermant un fluide et des particules de noir de carbone dans ledit fluide. Lesdites gouttelettes sont entourées par un liant de polyuréthanne formé par un diisocyanate et un diol de polyéther, au moins 20 % molaire du diisocyanate constituant un diisocyanate aromatique.