polythioester

https://doi.org/10.1351/goldbook.15305
Polymer composed of macromolecules containing thiocarboxylate (thioester) linkages in the backbone:\(\ce{-S-CO\bond{-}}\) or \(\ce{-O-CS\bond{-}}\) or \(\ce{-S-CS\bond{-}}\)
Note: A polymer containing only pendent thioester groups is excluded.
Example:
polythioester
Source:
PAC, 2009, 81, 1131. (Glossary of class names of polymers based on chemical structure and molecular architecture (IUPAC Recommendations 2009)) on page 1171 [Terms] [Paper]