Editing Epoxy (section)

=== Isocyanates ===

The reaction of epoxide groups and isocyanate groups can result in two predominant types of ring structures: [[isocyanurate]] rings (through [[trimerization]] of isocyanate groups) and [[oxazolidinone]] rings (through the reaction of an isocyanate group with an epoxide group). The reaction is carried with the presence of a catalyst at temperatures ranging from 150°C and 180°C. studies have shown that there is a correlation between epoxy equivalent weight (EEW) and the [[glass transition temperature]] (T<small>g</small>) of the final polymer, indicating that higher EEW corresponds to higher T<small>g</small>.<ref>{{Cite web|date=2013|title=Non-sintering isocyanate modified epoxy resin for fusion bonded epoxy applications|website=[[Google Patents]]|url=https://patents.google.com/patent/EP2205653B1/en}}{{cbignore}}</ref>