Heat-curable reactive powder on the basis of polyurethanes.

摘要

A process for the preparation of pulverulent, heat-curable reaction mixtures comprising a solid polyisocyanate and NCO-active, high-molecular-weight compounds which are solid at room temperature and optionally solid or liquid low-molecular-weight compounds, characterised in that the reaction mixture is added in the form of a melt to an emulsifier containing inert solvents, and in that the pulverulent reaction mixture which forms contains all the starting components in an as yet uncrosslinked state.