https://doi.org/10.1351/goldbook.15282
Polymer composed of macromolecules containing hydantoin (imidazolidine-2,4-dione) rings in the backbone:
where \(\ce{R}\) is hydrogen, or an alkyl, aryl, or heteroaryl group.



Note: Polyhydantoins are a subclass of polyimides.
Example:
