Polyisocyanurate

{
  "id": "MLC-T-CHM-009153",
  "term": "Polyisocyanurate",
  "field": "Chemistry",
  "definition": "A polymer characterized by the presence of isocyanurate rings in the main chain, produced through the cyclic trimerization of isocyanate monomers. The resulting structure is a highly cross-linked, rigid thermosetting network, which imparts excellent thermal stability and fire resistance. Polyisocyanurate is distinct from polyurethane, although they share isocyanate precursors; polyisocyanurate has a higher proportion of isocyanate and is formed at higher temperatures with specific trimerization catalysts, leading to a more brittle but thermally superior material.",
  "subject": "Polymer",
  "see_also": [
    "polycyanurate"
  ],
  "references": [
    "PAC, 2009, 81, 1131. 'Glossary of class names of polymers based on chemical structure and molecular architecture (IUPAC Recommendations 2009)' on page 1158 (https://doi.org/10.1351/PAC-REC-08-01-30)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/polyisocyanurate/"
}