Resin compositions for thermosetting powder coating compositions

The invention relates to a resin composition comprising at least an organophosphorous compound and a branched amorphous carboxylic acid functional polyester, said polyester having a Tg of at least 40 °C, said polyester comprising at least 1 to 45 % mol of 2,2-dimethyl-1,3-propanediol; a C 3 to C 5 a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	VAN BERGT, CORNELIS JOHANNES BARTHELOMEUS, BOLKS, JURJEN, CUIJPERS, JUUL, BUIJSEN, PAULUS FRANCISCUS ANNA, HUANG, RUBIN
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The invention relates to a resin composition comprising at least an organophosphorous compound and a branched amorphous carboxylic acid functional polyester, said polyester having a Tg of at least 40 °C, said polyester comprising at least 1 to 45 % mol of 2,2-dimethyl-1,3-propanediol; a C 3 to C 5 aliphatic diol AD1 not including 2,2-dimethyl-1,3-propanediol; a C 6 to C 50 aliphatic or cycloaliphatic diol AD2; 0.1 to 10 % mol of an at least trifunctional monomer; 1 to 55 % mol of terephthalic acid, wherein the % mol is based on the polyester. The powder coatings of the present invention derived upon curing at low temperature of the thermosetting powder coating compositions of the invention that were storage stable and comprised said resin composition and a crosslinker having functional groups that are reactive with the carboxylic acid groups of the polyester, have limited or no blooming, good smoothness sufficient reverse impact resistance and preferably have also good degassing limit.