A MODIFIED MELAMINE-FORMALDEHYDE RESIN, A PAPER IMPREGNATED WITH A MODIFIED MELAMINE-FORMALDEHYDE RESIN, A METHOD FOR MANUFACTURING A FLOOR PANEL, AND USE OF DICYANDIAMIDE AS A MODIFIER IN A MELAMINE-FORMALDEHYDE RESIN

Use of dicyandiamide as a modifier in a melamine-formaldehyde resin (34) for use in a floor panel (10) comprising a substrate (24) and atop layer (26), the top layer (26) defining an upper surface (18) of the floor panel (10). The floor panel (10) is provided with embossments (20, 21, 22) extending...

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Bibliographische Detailangaben
Hauptverfasser:	MEIRLAEN, José, CLEMENT, Benjamin, DE COUVREUR, Jurgen
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BUILDING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DECORATIVE ARTS FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS FIXED CONSTRUCTIONS IMPREGNATING OR COATING OF PAPER LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS 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 MOSAICS MOTOR VEHICLES ORGANIC MACROMOLECULAR COMPOUNDS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PAPERHANGING PERFORMING OPERATIONS PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCING DECORATIVE EFFECTS PRODUCTION OF CELLULOSE PULP COMPOSITIONS TARSIA WORK TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TRAILERS TRANSPORTING TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	Use of dicyandiamide as a modifier in a melamine-formaldehyde resin (34) for use in a floor panel (10) comprising a substrate (24) and atop layer (26), the top layer (26) defining an upper surface (18) of the floor panel (10). The floor panel (10) is provided with embossments (20, 21, 22) extending from the upper surface (18), such that a thickness (T) of the floor panel (10) varies along a cross- section of the floor panel (10). The top layer (26) comprises a modified melamine-formaldehyde resin (34) comprising formaldehyde and melamine in an F/M molar ratio within the range of from 1.60 to 1.80, preferably from 1.70 to 1.80, more preferably from 1.73 to 1.75, and at least one modifier, thereby providing a floor panel (10) having improved transparency at the embossments (20, 21, 22). Utilisation de dicyandiamide en tant que modificateur dans une résine mélamine-formaldéhyde (34) destinée à être utilisée dans un panneau de plancher (10) comprenant un substrat (24) et une couche supérieure (26), la couche supérieure (26) définissant une surface supérieure (18) du panneau de plancher (10). Le panneau de plancher (10) est pourvu de bossages (20, 21, 22) s'étendant à partir de la surface supérieure (18), de telle sorte qu'une épaisseur (T) du panneau de plancher (10) varie le long d'une section transversale du panneau de plancher (10). La couche supérieure (26) comprend une résine mélamine-formaldéhyde modifiée (34) comprenant du formaldéhyde et de la mélamine selon un rapport molaire F/M dans la plage de 1,60 à 1,80, de préférence de 1,70 à 1,80, plus préférentiellement de 1,73 à 1,75, et au moins un modificateur, ce qui permet d'obtenir un panneau de plancher (10) présentant une transparence améliorée au niveau des bossages (20, 21, 22).