Title: polyparabanic acid Long Title: IUPAC Gold Book - polyparabanic acid DOI: 10.1351/goldbook.15292 Status: current Definition Polymer composed of macromolecules containing imidazolidine-2,4,5-trione (parabanic acid) rings in the backbone: Notes 1) Polyparabanic acids are a subclass of polyimides. 2) Parabanic acid is not an IUPAC-approved name for imidazolidine-2,4,5-trione. Source - PAC, 2009, 81, 1131. 'Glossary of class names of polymers based on chemical structure and molecular architecture (IUPAC Recommendations 2009)' on page 1161 (https://doi.org/10.1351/PAC-REC-08-01-30) Other Outputs - html: https://goldbook.iupac.org/terms/view/15292/html - json: https://goldbook.iupac.org/terms/view/15292/json - xml: https://goldbook.iupac.org/terms/view/15292/xml Citation: Citation: 'polyparabanic acid' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.15292 License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. Collection: If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. Accessed: 2026-06-21T07:59:57+00:00