Polyparabanic acid

{
  "id": "MLC-T-CHM-009220",
  "term": "Polyparabanic acid",
  "field": "Chemistry",
  "definition": "A polymer whose macromolecules contain imidazolidine-2,4,5-trione rings, known as parabanic acid rings, in the backbone. Each ring has two nitrogen atoms flanked by carbonyl groups, so the class is counted as a subclass of polyimides. Parabanic acid itself is the cyclic ureide of oxalic acid, and diisocyanates are the usual starting materials for the polymers.",
  "subject": "Polymer",
  "references": [
    "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)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/polyparabanic-acid/"
}