Biodegradable polyester composition

Biodegradable polyester composition， characterized in that it comprises the following components in parts by weight: i) 60 to 100 parts of biodegradable aliphatic-aromatic polyester; ii) 0 to 40 parts of polylactic acid; iii) 0 to 35 parts of an organic filler and / or one inorganic filler; iv) 0 to 1 part of a copolymer which contains epoxy groups and is based on styrene， acrylate and / or methacrylate; wherein the weight content of the cyclic ester compound having a structure shown as formula (I) is 495 ppm to 750 ppm based on the total weight of the biodegradable polyester composition: and the weight content of the cyclopentanone is 0.5 ppm to 85 ppm based based on the total weight of the biodegradable polyester composition.

可生物降解聚酯组合物，其特征在于包含以下重量份的组分：i) 60~100重量份的可生物降解脂肪族-芳香族聚酯；ii) 0~40重量份的聚乳酸（polylactic acid）；iii) 0~35重量份的有机填料和/或无机填料；iv) 0~1重量份的以苯乙烯（styrene）、丙烯酸酯（acrylate）和/或甲基丙烯酸酯（methacrylate）为基础的含环氧基团的共聚物；其中，基于该可生物降解聚酯组合物的总重量计，具有式(I)所示结构的环酯类化合物的重量含量为495ppm至750ppm；且基于该可生物降解聚酯组合物的总重量计，环戊酮的重量含量为0.5ppm至85ppm。