COPOLYESTER RESIN, AND METHOD FOR PRODUCING SAME

The present invention provides a copolymerized polyester resin which can produce an adhesive resin having an excellent color tone and an excellent durability when used for an adhesive to be applied to various uses . A copolymerized polyester resin, comprising, as constituting ingredients, a dicarbox...

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Bibliographische Detailangaben
Hauptverfasser:	OHASHI, Hideto, SHIMIZU, Hideki
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON DYES MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:	The present invention provides a copolymerized polyester resin which can produce an adhesive resin having an excellent color tone and an excellent durability when used for an adhesive to be applied to various uses . A copolymerized polyester resin, comprising, as constituting ingredients, a dicarboxylic acid ingredient containing 75 molar % or less of terephthalic acid and a diol ingredient containing two or more kinds of diols, characterized in that the copolymerized polyester resin satisfies the following (1) and (2) : (1) A decrease in a reduced viscosity after the copolymerized polyester resin is subjected to a heat treatment in a nitrogen atmosphere at 275°C for 2 hours is 0.20 dl/g or less; and (2) A color b value is 5 or less.