WATER-DISPERSIBLE BINDER COMPOSITION, A PROCESS FOR THE PRODUCTION OF A STOVING FILLER AND A COATING PREPARED THEREFROM

The present invention relates to a water-dispersible binder composition which is suitable for the production of a stoving filler to be processed from the aqueous phase and which contains a) 65 to 95% by weight of a urethane-modified polyester resin containing carboxyl groups, b) 5,to 35% by weight o...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MEIXNER, JUERGEN, BLUM, HARALD, PEDAIN, JOSEF, BURGDORFER, HANS-HERIBERT
Format:	Patent
Sprache:	eng ; fre
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 COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES INKS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS 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 SPRAYING OR ATOMISING IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The present invention relates to a water-dispersible binder composition which is suitable for the production of a stoving filler to be processed from the aqueous phase and which contains a) 65 to 95% by weight of a urethane-modified polyester resin containing carboxyl groups, b) 5,to 35% by weight of a crosslinker resin and c) 0 to 2% by weight of an emulsifier, wherein the percentages are based on the total weight of components a) to c), characterized in that component a) has an acid value of 15 to 36, a hydroxyl value of at least 40 and a molecular weight (M w) of 5,000 to 50,000 and has been obtained by reacting a1) 72 to 80% by weight of a polyester polyol having a hydroxyl value of 130 to 200 and an acid value of 1 to 5 and a2) 4 to 7% by weight of a 2,2-bis-(hydroxymethyl)-alkane carboxylic acid or a quantity corresponding to this quantity of acid of a tertiary amine salt of such an acid with a3) 15 to 24% by weight of at least one cycloaliphatic diisocyanate having a molecular weight of 166 to 294, wherein the percentages are based on the total weight of components a1) to a3). The present invention also relates to a process for the production of,an aqueous stoving filler which is suitable for the production of chip resistant coatings and to the chip resistant coatings produced therefrom.