https://doi.org/10.1351/goldbook.15292
Polymer composed of macromolecules containing imidazolidine-2,4,5-trione (parabanic acid) rings in the backbone:



Notes:
- Polyparabanic acids are a subclass of polyimides.
- Parabanic acid is not an IUPAC-approved name for imidazolidine-2,4,5-trione.