TRANSPARENT POLYURETHANES WITH HIGH GLASS TRANSITION TEMPERATURE Tg

The present invention relates to a polyurethane exclusively composed of a polyisocyanate component and of a polyol component, where the polyisocyanate component consists of one or more polyisocyanates and the average NCO functionality per molecule of the polyisocyanate component is 3, and the polyol...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MATNER MATHIAS, ZHUANG WEI, ACHTEN DIRK, EHLERS MICHAEL, CASSELMANN HOLGER
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS PHYSICS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	The present invention relates to a polyurethane exclusively composed of a polyisocyanate component and of a polyol component, where the polyisocyanate component consists of one or more polyisocyanates and the average NCO functionality per molecule of the polyisocyanate component is 3, and the polyol component consists of one or more polyols and the average OH functionality per molecule of the polyol component is 3 and its OH content is 25% by weight. The invention further relates to a process for the production of the polyurethane of the invention, to an optical element comprising or consisting of a polyurethane of the invention, and also to the use of a polyurethane of the invention for conducting light, scattering light and/or deflecting