G - Physics – 02 – F
Patent
G - Physics
02
F
G02F 1/1334 (2006.01) C09K 9/02 (2006.01) C09K 19/54 (2006.01) G02F 1/1333 (2006.01)
Patent
CA 2290813
A new type of composite material made by liquid crystals and polymers which is naturally transparent to light and becomes opaque by application of electric fields has been invented. In this material the two components (polymer and liquid crystal) are mutually dispersed one in the other. With respect to other similar inventions, concerning mutual dispersed liquid crystal and polymers, this new type of film presents the following advantages: it is highly adhesive to glass or plastic supports since it contains more than 50 % of the polymer component; it can be produced starting from a binary emulsion of a thermotropic liquid crystal and a non liquid crystal organic compound, differently from other mutual dispersion of liquid crystals and polymers, which are produced by polymerising liquid crystals solution. It has a haze free electrooptical transmission.
L'invention concerne un nouveau type de matériau composite à base de cristaux liquides et de polymères, naturellement transparent à la lumière et devenant opaque par application de champs électriques. Dans ce matériau, deux constituants (polymère et cristal liquide) sont dispersés l'un dans l'autre. Par rapport à d'autres inventions similaires, concernant des polymères et cristaux liquides dispersés les uns dans les autres, ce nouveau type de film présente les avantages suivants: il adhère très bien à des supports de verre ou de matière plastique, car il contient plus de 50 % du composant polymère; on peut le produire à partir d'une émulsion binaire d'un cristal liquide thermotropique et d'un composé organique qui n'est pas un cristal liquide, et ce différemment des autres dispersions de cristaux liquides et de polymères, lesquelles sont produites par polymérisation de la solution de cristaux liquides. Enfin ce nouveau matériau possède une transmission électro-optique dépourvue d'apparences nuageuses.
Chidichimo Giuseppe
de Filpo Giovanni
Consorzio Per Le Tecnologie Biomediche Avanzate Tebaid
Robic
LandOfFree
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