Abstract: Over the past two decades, with the PET has become an increasingly widespread use, PET waste output, and the quality of light to occupy a large space, the difficulties of natural decomposition. To improve the quality of the environment, the realization of the production, processing, recycling of resources, a virtuous circle, has now become an important topic EPT industry. How to effectively reduce losses and to maximize the recovery of PET is the most important. PET can be used by chemical depolymerization to achieve its recycling. This paper summarizes the Chemical Waste recycled PET polyester research in the field of the status quo, both at home and abroad briefly introduced the development of the main chemical depolymerization process, including hydrolysis, methanol depolymerization method, such as ethylene glycol depolymerization method, at the same time on the the advantages and disadvantages of the process of a comprehensive comparison
Keywords: PET polyester; degradation; production process; chemical recycling