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What is Aliphatic Polyester Production Method about?

This patent describes a process for producing aliphatic polyesters like polyglycolic acid through ring-opening polymerization of cyclic esters. The process involves at least two serial stages of bulk-phase ring opening polymerization followed by a solid-phase polymerization. A cyclic ester is supplied to a first reactor under dry air to perform a first polymerization stage, producing a partially polymerized product. This product is then supplied to a second reactor under dry inert gas to perform a second po

Author

Ferina Guo

Language

EN