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US 2021/0002248 A1Published application
Glycolide production method
AssigneeKureha Corporation
InventorsYuta YAMADOI, Yoshinori SUZUKI, Takenori TOSE, Haruyasu YAMAJI, Toshihiko ONO
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Abstract
The object of the present invention is to provide a glycolide production method capable of further increasing the production rate of glycolide. The glycolide production method according to the present invention includes adding metal iron to an aqueous glycolic acid solution, subjecting glycolic acid contained in the aqueous glycolic acid solution to which the metal iron is added, to dehydrating polycondensation to obtain a glycolic acid oligomer, and heating and depolymerizing the glycolic acid oligomer to obtain glycolide.
Claims6
A glycolide production method comprising:
- adding metal iron to an aqueous glycolic acid solution;
- subjecting glycolic acid contained in the aqueous glycolic acid solution to which the metal iron is added, to dehydrating polycondensation to obtain a glycolic acid oligomer;
- and
- heating and depolymerizing the glycolic acid oligomer to obtain glycolide.
1 more element
Dependencies are inferred from the claim text.