CRYSTALLINE POLYESTER RESIN AQUEOUS DISPERSION, COATING COMPOSITION, COATING FILM, AND METAL CAN

The purpose of the present invention is to provide: a crystalline polyester resin aqueous dispersion capable of forming a coating film in which there is only a small amount of an organic solvent used for water dispersion due to excellent solvent solubility and which has excellent processability and...

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Bibliographische Detailangaben
Hauptverfasser:	HAMANO, Masami, MIKAMI, Tadahiko, MIEDA, Hiroyuki, SUGIMOTO, Kanta
Format:	Patent
Sprache:	eng ; fre ; jpn
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING CORRECTING FLUIDS DYES FILLING PASTES GENERAL PROCESSES OF COMPOUNDING HANDLING THIN OR FILAMENTARY MATERIAL INKS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PACKAGES PACKAGING ELEMENTS PACKING PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES STORING THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS WORKING-UP
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Beschreibung
Zusammenfassung:	The purpose of the present invention is to provide: a crystalline polyester resin aqueous dispersion capable of forming a coating film in which there is only a small amount of an organic solvent used for water dispersion due to excellent solvent solubility and which has excellent processability and retort resistance characteristics; and a coating composition, a coating film and a metal can containing the crystalline polyester resin aqueous dispersion. The purpose of the present invention is also to obtain a coating material from which hazardous substances such as bisphenol A and formaldehyde have been removed, since a curing agent is not contained therein. The crystalline polyester resin aqueous dispersion is characterized by containing the following crystalline polyester resin (A). Crystalline polyester resin (A) comprises a polycarboxylic acid component and a polyhydric alcohol component as copolymer components, contains 4-55 mol% of orthophthalic acid as the polycarboxylic acid component, contains 50 mol% or more of 1,4-butanediol as the polyhydric alcohol component, has less than 40 mol% of ethylene glycol, has an acid value of 200 eq/ton or more, and has a melting point of 120-160°C. Le but de la présente invention est de fournir : une dispersion aqueuse de résine de polyester cristallin capable de former un film de revêtement dans lequel il n'y a qu'une petite quantité d'un solvant organique utilisé pour la dispersion d'eau en raison d'une excellente solubilité dans le solvant et qui présente une excellente aptitude au traitement et d'excellentes caractéristiques de résistance à l'autoclave ; et une composition de revêtement, un film de revêtement et une boîte métallique contenant la dispersion aqueuse de résine de polyester cristallin. Le but de la présente invention est également d'obtenir un matériau de revêtement à partir duquel des substances dangereuses telles que le bisphénol A et le formaldéhyde ont été éliminées, étant donné qu'un agent de durcissement n'est pas contenu dans celui-ci. La dispersion aqueuse de résine de polyester cristallin est caractérisée en ce qu'elle contient la résine de polyester cristallin (A) suivante. La résine de polyester cristallin (A) comprend un composant d'acide polycarboxylique et un composant d'alcool polyhydrique en tant que composants de copolymère, contient de 4 à 55% en moles d'acide orthophtalique en tant que composant d'acide polycarboxylique, contient 50% en moles ou plus de 1,4-butanediol en tant que