Room temperature-stable blends of heat-curable reactive resins, latent catalyst complexes for these blends, process for their manufacture and the heat-curable resins obtained from these blends

摘要

Mixtures, which are stable at ambient temperature, of hot- thermosetting reactive resins for insulating impregnation of electrical materials or for the preparation of moulded materials or of composite materials, which mixtures comprise liquid oligoisocyanate or polyisocyanate compounds and liquid epoxide resins and a latent hardening catalyst which is inactive at ambient temperature and which consists of an addition complex of an amine compound from the group consisting of the amines, the alkylhydrazines and the imidazoles, with a boron halide. The mixtures furthermore comprise a small quantity of maleic anhydride, or the boron halide is boron tribromide, without addition of maleic anhydride. Latent catalyst complexes for these mixtures, formed by the addition complexes of BBr3 and an amine, an alkylhydrazine or an imidazole, their processes of preparation, and the resins obtained from these mixtures. …IMAGE… (days)