Funding for this research was provided by:
National Natural Science Foundation of China (21774017)
Received: 12 December 2021
Accepted: 27 September 2022
First Online: 7 November 2022
: T.X. and X.L. are named inventors on a Chinese patent application submitted by Dalian University of Technology that covers the polyester based on α,α-disubstituted valerolactones as well as the their preparation method and degradation. E.Y.-X.C. is a named inventor on a US patent application submitted by Colorado State University Research Foundation, which covers chemically circular semi-crystalline polyesters. The other authors declare no competing interests.