SCRATCH AND ABRASION-PROOF SHEET FROM TRANSPARENT PLASTIC MATERIAL WITH GOOD OPTICAL PROPERTIES, PROCESS FOR MAKING THE SHEET AND GLAZING USING IT

A sheet made of a transparent plastic material comprising a layer of polyurethane formed by depositing, by casting or reactive spraying on to a horizontal support plane of a reaction mixture comprising a polyol component and an isocyanate component, the face of the polyurethane layer which was facin...

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Bibliographische Detailangaben
Hauptverfasser:	DAUDE, GERARD, DAGAUT, PHILIPPE, BRAVET, JEAN-LOUIS, ORAIN, ROGER, DIMIER, GERARD
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	A sheet made of a transparent plastic material comprising a layer of polyurethane formed by depositing, by casting or reactive spraying on to a horizontal support plane of a reaction mixture comprising a polyol component and an isocyanate component, the face of the polyurethane layer which was facing the support during the formation of the layer comprising an acrylic polymer resulting from bringing this reaction mixture into contact, during the deposition of the reaction mixture, with a thin acrylic layer previously deposited on the support. The sheet is employed in safety glazing, the face of the polyurethane layer comprising the acrylic polymer facing outwards in the glazing.