Composition of two components for the manufacture of polyurethane gelcoats for epoxy resin and vinyl ester resin composites

摘要

Use of a two component composition, which A) has a polyol component, which contains one or more polyols and one or more aromatic amines and a concentration of hydroxyl groups of 0.5 to 10 moles of hydroxyl groups per kg of polyol component, and B) comprises a polyisocyanate component, which contains one or more aromatic polyisocyanates, for the manufacture of polyurethane gelcoats for composite materials, the synthetic resin comprising epoxy resin and / or vinyl ester resin and, upon entering it contact with the gelcoat, is not hardened, or is not completely hardened, and containing the polyol component A1) one or more low molecular weight polyols with a molecular weight of 150 to 600 g / mol and a hydroxyl group concentration of 4 at 20 moles of hydroxyl groups per kg of low molecular weight polyol and / or A2) one or more high molecular weight polyols, and A3) one or more aromatic amines.