Method for preparing amine compounds for hardeners of epoxy resins or polyurethane prepolymers and polyureas based on chemical treatments of polyurethane wastes

摘要

The present invention relates to a method for producing an amine compound which can be used as a raw material for producing an epoxy resin and a polyurethane curing agent and polyurea as waste raw material.;The amine compound of the present invention is prepared by mixing 10 to 90% of caprolactam in waste polyurethane and heating it to about 200 ° C. When the amine compound obtained by the present invention is used to cure an epoxy resin or a polyurethane prepolymer or to prepare a polyurea, it exhibits good physical properties without comparable to conventional hardeners or raw materials. Therefore, waste polyurethane, which has been disposed of or only partially recycled, is recycled and recycled with expensive hardeners or other raw materials to lower the environmental cost as well as the manufacturing cost of these compounds.;Polyurethane, Caprolactam