Trimerization catalysts

摘要

Trimerising catalyst system for isocyanate, comprises at least a potassium octoate (50 wt.%) and solvent free of hydroxyl- and amino-group, where the isocyanate is added under the inert reaction condition. An independent claim is included for a method for preparing highlycross-linked polyisocyanurate containing polyaddition substrates containing hydroxy group and organic isocyanate comprising trimerising isocyante group using the catalyst system.