POLYURETHANE LAYER HAVING ENERGY ABSORBING PROPERTIES AND ITS USE IN LAMINATED SAFETY GLASS

A layer of high optical quality having energy-absorbing properties, based on a polyurethane, obtained by reactive casting or reactive spraying onto a horizontal planar support of a reaction mixture of an isocyanate component and of a polyol component, the ratio of the NCO isocyanate equivalent group...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BRAVET, JEAN-LOUIS, DRUJON, SYLVIE
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES GENERAL PROCESSES OF COMPOUNDING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GLASS INKS JOINING GLASS TO GLASS OR OTHER MATERIALS 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 MINERAL OR SLAG WOOL MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS WORKING-UP
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Beschreibung
Zusammenfassung:	A layer of high optical quality having energy-absorbing properties, based on a polyurethane, obtained by reactive casting or reactive spraying onto a horizontal planar support of a reaction mixture of an isocyanate component and of a polyol component, the ratio of the NCO isocyanate equivalent groups to the OH equivalent groups being approximately equal to 1, characterised in that the isocyanate component is made up of a mixture of 3-isocyanatomethyl- 3,5,5-trimethylcyclohexyl isocyanate (isocyanate I) and of bis-4-isocyanatocyclohexylmethane (isocyanate II), in a proportion of 0.1 to 0.8 NCO equivalents of isocyanate (I) and of 0.9 to 0.2 NCO equivalents of isocyanate (II) per NCO equivalent in total. … The layer according to the invention is employed in laminated glazing comprising at least one sheet of glass and a layer of plastic material. ……