MICROWAVE-POLYMERIZABLE ISOCYANATE/EPOXY RESINS FOR HEAVY-DUTY APPLICATIONS

摘要

Crosslinkable liquid composition based on organic isocyanates and epoxy compounds, comprising the following components: (A) an organic polyisocyanate; (B) a polyepoxide or mixture of a polyepoxide and a monoepoxide; and (C) a catalyst constituted by at least one cyanoderivative containing a quaternary nitrogen atom, which composition can be polymerized at temperatures of 40.degree.C or higher, by a process comprising exposure thereof to a non-ionizing electromagnetic radiation having afrequency comprised in the microwave range of frequencies, to obtain a solid material endowed with an excellent combination of physical, chemical and mechanical properties.