Molded article having heat resistance and impact resistance

Details Molded article having heat resistance and impact resistance Molded article having heat resistance and impact resistance

C - Chemistry, Metallurgy

08

L

C08L 67/04 (2006.01) B29C 45/00 (2006.01) B29C 49/08 (2006.01) C08J 5/00 (2006.01) C08K 3/36 (2006.01) C08G 63/08 (2006.01) C08G 63/60 (2006.01) C08L 101/16 (2006.01)

Patent

CA 2692189

The present invention provides a molded article of a resin containing poly-L- lactic acid, which is excellent in heat resistance and drop impact resistance. There is disclosed a molded article characterized in that said molded article is made from a resin composition obtained by compounding a functional filler into a resin made from a poly-L-lactic acid, the functional filler being yielded by a copolymerization of a compound having 2-4 hydroxyl groups with 1-100 molecules of D-lactic acid and a low-molecular-weight polymer selected from a group consisting of glycols, aliphatic polyesters and aromatic polyesters. The resin molded article according to the present invention exerts excellent drop impact resistance without sacrificing heat resistance.

La présente invention concerne un article moulé en résine à base d'acide poly-L-lactique présentant des propriétés remarquables en termes de résistance à la chaleur et aux chocs associés aux chutes. L'invention concerne plus précisément une résine obtenue par mélange d'une charge fonctionnelle, formée par copolymérisation de 1 à 100 molécules d'acide D-lactique et d'un polymère de faible poids moléculaire choisi dans le groupe constitué des glycols, des polyesters aliphatiques et des polyesters aromatiques avec un composé comportant des groupes 2-4-hydroxy, pour obtenir une résine à base d'acide poly-L-lactique. Un article moulé constitué de ladite résine présente une remarquable résistance aux chocs associés aux chutes sans rien perdre de sa résistance à la chaleur.

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