公开(公告)号：US20210163691A1

公开(公告)日：2021-06-03

申请号：US16986507

申请日：2020-08-06

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Soo Chang SONG ,  Bo-Bae SEO

IPC: C08G79/025 ,  B33Y70/10 ,  A61L27/18 ,  A61L27/52 ,  B33Y80/00

Abstract: The present invention relates to a thermosensitive hydrogel composition, which while comprising an amino acid ester, polyethylene glycol, and a functional group for the introduction of a functional moiety at an end thereof at a predetermined ratio, comprises a polyphosphazene-based polymer having a controlled length and a content of polyethylene glycol contained therein, in which a reversible sol-gel transition character is altered; a medical polymer hydrogel comprising the polyphosphazene-based polymer; or an ink composition for 3D printing.