PROCESS FOR PRODUCING A MULTI-LAYERED COATING

The invention relates to a process for producing a multi-layered coating, using a pigmented aqueous base coating composition containing a water-dilutable emulsion polymer as film-forming material. The water-dilutable emulsion polymer is obtained by two-stage emulsion polymerization. In the first sta...

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Bibliographische Detailangaben
Hauptverfasser:	JOUCK, WALTER, WIEDITZ, STEFAN, MAYER, BERND
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	ACTUATING-FLOATS ADHESIVES APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL BEDS BLASTING CHAIRS CHAIRS FOR DENTISTRY CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COCKS COFFEE MILLS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DEVICES FOR VENTING OR AERATING DOMESTIC ARTICLES OR APPLIANCES DYES ENGINEERING ELEMENTS AND UNITS FILLING PASTES FUNERAL DEVICES FURNITURE GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HUMAN NECESSITIES HYGIENE INKS LIGHTING MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MECHANICAL ENGINEERING MEDICAL OR VETERINARY SCIENCE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS OPERATING TABLES OR CHAIRS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SOFAS SPICE MILLS SPRAYING OR ATOMISING IN GENERAL SUCTION CLEANERS IN GENERAL TAPS THEIR PREPARATION OR CHEMICAL WORKING-UP THERMAL INSULATION IN GENERAL TRANSPORT OR ACCOMODATION FOR PATIENTS TRANSPORTING USE OF MATERIALS THEREFOR VALVES WEAPONS WOODSTAINS
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Beschreibung
Zusammenfassung:	The invention relates to a process for producing a multi-layered coating, using a pigmented aqueous base coating composition containing a water-dilutable emulsion polymer as film-forming material. The water-dilutable emulsion polymer is obtained by two-stage emulsion polymerization. In the first stage, a polymer with a glass transition temperature (TG1?) of +30 to +110 C is produced. In the second stage, a monomer mixture which, if polymerized alone, would yield a polymer with a glass transition temperature (TG2? of -60 to +20 C is polymerized in the presence of the polymer produced during the first stage. The hydroxyl number of the emulsion polymer is between 2 and 100. La présente invention se rapporte à un procédé pour la fabrication de revêtements multicouches où est mise en oeuvre une composition de revêtement de base aqueuse et pigmentée, laquelle contient comme matière filmogène un polymère d'émulsion diluable à l'eau. Ledit polymère d'émulsion diluable à l'eau est produit dans une polymérisation en émulsion en deux étapes. Dans la première étape, un polymère est produit à une température de transition vitreuse (TG1) comprise entre +30 et +110°C. Dans la second étape, un mélange de monomères est polymérisé en présence du polymère produit dans la première étape. Ce mélange de monomères, s'il était polymérisé pour lui seul, donnerait un polymère à une température de transition vitreuse (TG2) comprise entre -60 et +20 °C. L'indice d'hydroxyle du polymère d'émulsion est situé entre 2 et 100.