Polyhydantoin

{
  "id": "MLC-T-CHM-009146",
  "term": "Polyhydantoin",
  "field": "Chemistry",
  "definition": "A polymer with hydantoin units, five-membered imidazolidine-2,4-dione rings, built into its main chain. A common route reacts diisocyanates with monomers carrying alpha-amino ester or alpha-amino nitrile groups, then closes the ring. Because each ring has a nitrogen flanked by two carbonyl groups, polyhydantoins are classed as a subclass of polyimides.",
  "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 1156 (https://doi.org/10.1351/PAC-REC-08-01-30)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/polyhydantoin/"
}