ISOCYANATE TRIMERISATION CATALYST SYSTEM, A PRECURSOR FORMULATION, A PROCESS FOR TRIMERISING ISOCYANATES, RIGID POLYISOCYANURATE/POLYURETHANE FOAMS MADE THEREFROM, AND A PROCESS FOR MAKING SUCH FOAMS

摘要

The instant invention provides an isocyanate trimerisation catalyst system, a precursor formulation, a process for trimerising isocyanates, rigid foams made therefrom, and a process for making such foams. The trimerisation catalyst system comprises: (a) a phosphatrane cation; and (b) an isocyanate-trimer inducing anion; wherein said trimerisation catalyst system has a trimerisation activation temperature in the range of equal to or less than 73 C.