| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high-molecular weight polyglycolic acid-based resin having an amide linkage excellent in heat stability in the molecular chain, a process for producing the same, and its application. <P>SOLUTION: The polyglycolic acid-based resin having a constituting unit represented by formula (1) (wherein R is a polyisocyanate residue and a 1-20C aliphatic hydrocarbon group, a 3-20C hydrocarbon group including an alicyclic structure or a 6-20C hydrocarbon group including an aromatic ring) is obtained by reacting a glycolic acid oligomer having a content of a carboxyl group in the terminal functional group of more than 90% with a polyisocyanate compound. <P>COPYRIGHT: (C)2011,JPO&INPIT |
