C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 251/00 (2006.01) C08B 31/02 (2006.01) C08B 31/04 (2006.01) C08B 31/16 (2006.01) C08G 63/664 (2006.01) C08G 63/82 (2006.01) C08L 3/06 (2006.01) C08L 67/04 (2006.01)
Patent
CA 2214739
A starch which has been esterified and grafted with a polyester. The esterifying acid is at least one member selected from among saturated and unsaturated C2-18 fatty acids and aromatic carboxylic acids. The polyester is a polymer prepared by the ring opening of at least one member selected from among lactones with 4- to 12-membered rings, and the terminal hydroxyl group thereof is substantially blocked with an ester group. A molded article obtained from the starch can easily achieve the desired flexibility and a toughness on a practical level and has moisture-related characteristics on a practical level, even when it contains no or little plasticizer.
Amidon estérifié à polyester greffé. L'acide d'estérification est au moins un élément choisi parmi les acides gras C2-18 saturés ou insaturés et les acides carboxyliques aromatiques. Le polyester est un polymère préparé par l'ouverture du noyau d'au moins un élément choisi parmi les lactones à noyaux ayant de 4 à 12 éléments, et son groupe hydroxy terminal est sensiblement bloqué par un groupe ester. On peut conférer sans difficulté à un article moulé obtenu à partir de cet amidon la souplesse et la ténacité voulues lors de son utilisation, et ses caractéristiques sont modifiées par l'humidité lors de son utilisation, et ce même lorsqu'il contient peu ou pas de plastifiant.
Kawamatsu Tetsuya
Okumura Yasuhito
Tanaka Hideyuki
Tanaka Hiroshi
Utsue Isamu
Japan Corn Starch Co. Ltd.
Marks & Clerk
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