Patents Assigned to Pujing Chemical Industry Co., Ltd.
  • Controlled production of polyglycolic acid and glycolide
    Patent number: 11814474
    Abstract: Provided is a process for producing a product having polyglycolic acid and glycolide from methyl glycolate. The process comprises esterification, polycondensation and optimization. Also provided are a product produced by the process and a method of changing the amount of the polyglycolic acid in the product by modifying the amount of an esterification catalyst and/or adjusting the reaction temperature.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: November 14, 2023
    Assignee: Pujing Chemical Industry Co., Ltd.
    Inventor: Saibo Wang