MULTILAYER VARNISH STRUCTURE WITH IMPROVED LAYER ADHESION

The present invention relates to a layer composite comprising a lower base paint layer and a cover layer arranged thereabove on a substrate, wherein the base paint is greater than or equal to 50 wt. % and less than 100 wt. % of polymers selected from the group consisting of polyacrylates, polyuretha...

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Bibliographische Detailangaben
Hauptverfasser:	HEBESTREIT, Tanja, LANGENFELD, Frank, HECKING, Andreas, LAAS, Hans-Josef, RIEHL, Katja, GOLLING, Florian, WEIKARD, Jan
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPRAYING OR ATOMISING IN GENERAL TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The present invention relates to a layer composite comprising a lower base paint layer and a cover layer arranged thereabove on a substrate, wherein the base paint is greater than or equal to 50 wt. % and less than 100 wt. % of polymers selected from the group consisting of polyacrylates, polyurethanes, polyether polyols, polycarbonate polyols, polyester polyols, melamine resins, alkyd resins or mixtures thereof; the cover layer is greater than or equal to 40 wt. % and less than or equal to 100 wt. % of prepolymers containing silane groups and/or the crosslinking products thereof; and the base paint is greater than or equal to 0.5 wt. % and less than or equal to 15 wt. % of prepolymers containing silane groups and/or the crosslinking products thereof, and wherein the prepolymers containing silane groups and/or the crosslinking products thereof have at least one thiourethane and/or urethane unit in the molecule. The invention further relates to a method for producing a claimed layer composite and to a vehicle or a vehicle body part having such a layer composite.