| abstract |
(57) [Summary] [PROBLEMS] In using and developing a para-dioxanone polymer as a medical material, the remaining metal atoms such as tin and aluminum in the polymer is a problem of concern. An object of the present invention is to provide a para-dioxanone-based polymer substantially containing no metal atom, and a method for producing the same. SOLUTION: Candida Antarctica (Cand) By performing ring-opening polymerization of para-dioxanones in the presence of a lipase derived from ida antarctica), a para-dioxanone-based polymer substantially containing no metal atoms and having a weight average molecular weight of 30,000 or more is obtained. Combine. |