Sinopec applies for a patent for grafted and modified polyglycolic acid copolymers, as well as their preparation methods and applications
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Sinopec has applied for a patent related to grafted modified polyglycolic acid copolymers, as well as their preparation methods and applications. The grafted modified polyglycolic acid copolymers obtained through this process enable the continuous and stable production of corresponding products. According to information from the Intellectual Property Office, Sinopec Corporation and Sinopec (Shanghai) Petrochemical Research Institute Co., Ltd. applied for a patent titled “Grafted Modified Polyglycolic Acid Copolymers and Their Preparation Methods and Applications”; the publication number is CN120441771A, with the application date being February 2024. The patent abstract indicates that this invention relates to the field of polymer materials, and discloses a grafted and modified polyglycolic acid copolymer sowie its preparation method and applications. The preparation method of this grafted modified polyglycolic acid copolymer involves grafting and prepolymerizing a mixture containing polyglycolic acid monomers, grafting monomers, a radical initiator, an ring-opening polymerization initiator, a ring-opening polymerization catalyst, and optionally a stabilizing agent, followed by polymerization ； Among them, the reaction temperature for grafting and prepolymerization is lower than the polymerization temperature.
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