The main raw materials are succinic acid and butanediol. Generating synthesize the esterification intermediate by esterification firstly, the making Degradable PBS polyester by polycondensation reaction. PBS is mainly used in fields such as packaging materials, films, and sheets etc.

Two different kinds of process: Batch process and continuous process.

Batch process mainly includes double-reactor system and three-reactor system, etc.; Continuous process mainly includes four-reactor process. For ultra-high molecular weight product, it is necessary to add or use a high-viscosity continuous polycondensation reactor unit.