EPOXY RESIN HARDENING AGENTS

摘要

The invention disclosed herein is a method for hardening an epoxy resin which comprises either (a) mixing the epoxy resin with a compound of the formula: wherein is or or (b) mixing the epoxy resin with a prepolymer obtained by reacting one mole of the diglycidyl ether of bisphenol A with two or more moles of a compound of the formula: wherein is or . Epoxy resins hardened with the above compound, or prepolymer, have excellent mechanical properties at high temperatures.