Patent ID: 9631043
Date: 2017-04-25
CPC Classifications: C08G,C08J,C08K

Claim:
1. A process for making a polyisocyanurate composition, the process comprising: mixing a polyisocyanate composition with one or more compounds which comprise a group having the structure —CO—NH mixing an amount of a trimerization catalyst compound with the polyisocyanate composition and the one or more compounds which comprise a group having the structure —CO—NH allowing the reaction mixture to react to form a polyisocyanurate composition comprising polyisocyanurate compounds, wherein the polyisocyanurate composition comprises 5 to 30 wt. % free isocyanate groups, and wherein the concentration of the polyisocyanurate compounds in the polyisocyanurate composition does not change more than 10% from its initial value when kept at room temperature and ambient pressure for at least 5 hours.