| abstract |
The present invention relates to a process for the preparation of polyisocyanurate composites, comprising the steps of: a) providing a polyisocyanate composition A) comprising monomeric polyisocyanates in an amount of at least 2% by weight, and b) at least one fiber Catalyst trimerization of the polyisocyanate composition A) in the presence of the filler material B) and the trimerization catalyst C) to form a polyisocyanurate composite material, wherein the trimerization catalyst C) is at least 1 Including the step of including four quaternary ammonium salts and / or metal salts. The invention also relates to polyisocyanurate composites obtainable according to the claimed method, and their use for producing parts consisting of or comprising the claimed polyisocyanurate composites and parts thereof. |