POLYESTER RESIN COMPOSITION

To provide a polyester resin composition which contains polyester resin and cellulose nanofiber, nonetheless is excellent in dispersibility of the cellulose nanofiber and provides a molded article thereof capable of securing high transparency and heat resistance and capable of having high mechanical...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MAEDA KOJI, SAKAKIBARA TERU, KOMABIKI SHINYA, KOGA SHINYA
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	To provide a polyester resin composition which contains polyester resin and cellulose nanofiber, nonetheless is excellent in dispersibility of the cellulose nanofiber and provides a molded article thereof capable of securing high transparency and heat resistance and capable of having high mechanical strength.SOLUTION: A polyester resin composition according to the present invention contains a water-soluble polyester resin and a cellulose nanofiber. The water-soluble polyester resin has a residue of a polyvalent carboxylic acid. The residue of the polyvalent carboxylic acid contains a tri- or higher valent carboxylic acid residue. An amount of the tri- or higher valent carboxylic acid residue with respect to the whole polyvalent carboxylic acid residue is within the range of 7-30 mol%.SELECTED DRAWING: None 【課題】ポリエステル樹脂とセルロースナノファイバーとを含有するにもかかわらず、セルロースナノファイバーの分散性に優れ、その成形品が高い透明性、及び耐熱性を確保できるとともに、高い機械的強度を有することができるポリエステル樹脂組成物を提供する。【解決手段】本発明に係るポリエステル樹脂組成物は、水溶性ポリエステル樹脂と、セルロースナノファイバーとを含有する。水溶性ポリエステル樹脂は、多価カルボン酸の残基を有する。多価カルボン酸の残基は３価以上の多価カルボン酸残基を含む。多価カルボン酸残基全体に対する３価以上の多価カルボン酸残基の量は、７〜３０ｍｏｌ％の範囲内である。【選択図】なし