Process for the preparation of low odor and storage-stable monomer-containing polyisocyanurates from isophorone diisocyanate

A process for preparing low-odor and storage-stable monomer-containing polyisocyanurates from isophorone diisocyanate by partial trimerization within 30 seconds to 2 hours in the presence of 0.01 to 2 wt .-%, based on the weight of the diisocyanate, of a catalyst of the general formula F1 in DOLLAR wherein R and X is the butyl group and Y · - · for CH¶3¶COO · - · is or in which R is the benzyl group Y · - · stands for a carboxylic acid anion having 4 to 8 carbon atoms and in this case, X an alkylene group having 2-3 C-atoms, where the three radicals X form via a common carbon atom with the quaternary nitrogen form a tricyclic system, the alpha- via at least one of nitrogen or beta- or gamma-position OH group has, at a temperature of 0 to 200 ° C.