| abstract |
The present invention relates to a process for preparing a composite polyisocyanate material, comprising the steps of: a) providing a polyisocyanate composition A) comprising an oligomeric polyisocyanate and low in monomeric diisocyanate, wherein "monomeric diisocyanate" is provided; "Low isocyanate" means that the polyisocyanate composition A) has a monomeric diisocyanate content of 20% by weight or less, and b) the polyisocyanate composition A) is mixed with at least one fibrous filler B) and catalytically trimerizing in the presence of a trimerization catalyst C) to provide a composite polyisocyanurate material, wherein the trimerization catalyst C) comprises at least one quaternary ammonium salt and/or a metal salt; . The present invention also relates to composite polyisocyanurate materials obtainable according to the claimed process, and their use for producing components, and to components consisting of or containing the claimed composite polyisocyanurate materials. will be. |