Compound semi-finished products and molded parts obtained therefrom, as well as molded parts obtained directly based on hydroxy-functionalized (meth) acrylates and uretdiones, which are crosslinked duroplastically

摘要

Process for the production of composite semi-finished products and their subsequent preparation to form molded parts, characterized by the following process steps I. obtaining a reactive composition containing a composition, II. direct impregnation of a fibrous support with the composition of I, III. hardening of the resin component in the composition by means of thermal initiation, redox initiation of a 2K system, electromagnetic radiation, electronic radiation or a plasma, IV. forming to give the subsequent molded part, and V. hardening of the isocyanate component in the composition, the composition being constituted essentially by the following components: A) a reactive resin component based on (meth) acrylate, having at least one member of the resin component hydroxy, amine and / or thiol groups, B) at least one di- or polyisocyanate blocked internally and / or blocked with blocking agents as an isocyanate component, and C) one or more polyols, in which case it is not (meth) acrylates or poly (meth) acrylates.