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    • 50. 发明授权
    • Biodegradable resin composition and molded article of the same
    • 可生物降解树脂组合物及其成型品
    • US08053491B2
    • 2011-11-08
    • US12376732
    • 2007-08-09
    • Taizo AoyamaNobuo NakamuraYoshihiko HashimotoNoriyuki Suzuki
    • Taizo AoyamaNobuo NakamuraYoshihiko HashimotoNoriyuki Suzuki
    • C08K5/10C08K5/101C08K5/103C08K5/11
    • C08K5/0008C08K5/0016C08K5/103C08L67/04
    • An object of the invention is to provide a resin composition which is particularly excellent in impact resistance, tensile elongation characteristics, heat resistance, surface properties, moldability and the like accompanied by less time dependent alteration of these properties and which is produced by mixing a certain plasticizer with a biodegradable polymer of plant origin, and to provide a molded product of the composition. The present invention can provide a resin composition comprising a biodegradable 3-hydroxyalkanoate copolymer (A) and a plasticizer (B), wherein: the biodegradable 3-hydroxyalkanoate copolymer (A) has a recurring unit represented by the structure formula (1): [—CHR—CH2—CO—O—] (wherein, R represents an alkyl group represented by CnH2n+1; and n is an integer of 1 to 15); the plasticizer (B) is based upon a polyglycerol acetic acid ester having an acetylation degree of no less than 50% ester.
    • 本发明的目的是提供一种特别优异的耐冲击性,拉伸伸长特性,耐热性,表面性能,成型性等的树脂组合物,伴随着这些性质的时间依赖性改变,并且通过混合某些 具有植物来源的可生物降解聚合物的增塑剂,并提供该组合物的模制产品。 本发明可以提供一种包含可生物降解的3-羟基链烷酸酯共聚物(A)和增塑剂(B)的树脂组合物,其中:所述可生物降解的3-羟基链烷酸酯共聚物(A)具有由结构式(1)表示的重复单元: -CHR-CH 2 -CO-O-](其中,R表示由C n H 2n + 1表示的烷基,n表示1〜15的整数)表示。 增塑剂(B)基于乙酰化程度不低于50%的聚甘油乙酸酯。