Kingfa Sci.&tech.co., Ltd.

Zhuhai Wango Chemical Co., Ltd.

Jiangsu Kingfa Sci. & Tech. Advanced Materials Co., Ltd.

Chunping Ouyang

Hui Yang

Xianbo Huang

Xiangbin Zeng

Tongmin Cai

Jian Jiao

Changli Lu

Kaijin Mai

Xueteng Dong

Kai Xiong

Nanbiao Ye

Chuanhui Zhang

Weida Qu

Pingxu Chen

The present invention discloses a biodegradable polyester composition, wherein the biodegradable polyester composition comprises the following components in parts by weight: i) 58 to 80 parts by weight of an aliphatic-aromatic copolyester; ii) 20 to 32 parts by weight of starch; and iii) 0 to 10 parts by weight of a processing agent. The present invention unexpectedly found by research that by using an aliphatic-aromatic copolyester in which an amount of aromatic carboxylic acid accounts for a total amount of diacid is 44 mol % to 48 mol % as a matrix resin, where the aliphatic-aromatic copolyester has a crystallization peak width D of 5&#xb0; C. to 16&#xb0; C., and by using starch of which a particle size D (50) is 2 &#x3bc;m to 12 &#x3bc;m as the other phase, and meanwhile by adding a specific amount of a processing agent, the polyester composition prepared has excellent transversal and longitudinal tear strengths, and the polyester composition has a biodegradation rate of 90% or more during the 12-week degradation test, satisfying the industrial compost.

Biodegradable polyester composition and use thereof

Growing community of inventors

Guangdong, China

Chunping Ouyang