Patent ID: 10730997

Abstract:
The invention relates to a polyisocyanate mixture comprising at least one polyisocyanurate which is based on tolylene diisocyanate and has isocyanate groups and at least one polyurethane which is based on tolylene diisocyanate and has isocyanate groups, wherein the polyisocyanate mixture hasa) a solids content of from ≥51 to ≤90% by weight, based on the total weight of the polyisocyanate mixture andb) a content of monomeric tolylene diisocyanate of ≤0.9% by weight, based on the total weight of the polyisocyanate mixture, andthe polyisocyanurate which is based on tolylene diisocyanate and has isocyanate groups has a polydispersity D of from ≥1 to ≤1.5, based on the total weight of the polyisocyanurate which is based on tolylene diisocyanate and has isocyanate groups, where the polydispersity D is the ratio of weight average and number average molecular weight of the polyisocyanurate and the weight average and number average molecular weight is in each case determined by means of gel permeation chromatography using a polystyrene standard and tetrahydrofuran as eluent in accordance with DIN 55672-1:2016-03.