Abstract: In 2019, 1.1 million tons of biodegradable polyesters have been used in the fields of fabrics, packaging and health care, and the market demands are still growing rapidly. In this paper, the main technologies of the industrial chain are reviewed, including raw materials, catalysts, chain extenders, blending, co-polymerization, industrial synthesis of polyesters, testing and processing technology. It is suggested that the products with low cost and controllable degradation rate should be developed according to the three major application fields of daily consumption, industrial application and high value-added medical treatment and health care. The focus of industrial chain technology is synthesis of "green" raw materials and further reduction of energy cost, accelerating the industrialization of research results based on the existing industrial polyester plant, improving the "biodegradable" test methods and standards, improving the establishment of product standards in different application fields; and adopting new processing and application technologies such as 3D printing and super-critical foaming to develop new application markets.

Key words: biodegradable polyesters; industrialization technology; application prospect