Resin composition for powder coatins

A resin composition for powder coating which comprises a substantially un-gelled polyester A having an acid value of from 1,200 to 5,000 g eq/10 g, a substantially un-gelled polyester B having an acid value of from 200 to 1,000 g eq/10 g and triglycidyl isocyanurate as a curing agent, wherein the we...

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Bibliographische Detailangaben
Hauptverfasser:	FUJIMOTO, KATSUYA, NOZAKI, TOKUZO, ATSUMI, KATSUYOSHI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CORRECTING FLUIDS DYES FILLING PASTES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	A resin composition for powder coating which comprises a substantially un-gelled polyester A having an acid value of from 1,200 to 5,000 g eq/10 g, a substantially un-gelled polyester B having an acid value of from 200 to 1,000 g eq/10 g and triglycidyl isocyanurate as a curing agent, wherein the weight ratio of polyester A to polyester B is from 70:30 to 10:90 and the difference (absolute value) in the gel time between polyester A and polyester B is at least 3 minutes. A resin composition for powder coating which causes no problems of polluting a baking oven, which shows less weight loss at the time of reaction and which can form a semi-mat or completely mat stable paint film is provided. These advantages cannot be obtained from any prior art powder coating that comprises a polyester having a large quantity of terminal hydroxyl groups and a blocked isocyanate-based curing agent.