Abstract New diglycidyl ethers of binuclear, five-membered or sixmembered, unsubstituted or substituted, oxyalkylated N-heterocyclic compounds, which contain two NH groups in the molecule, by reaction of binuclear, five-membered or six-membered, unsubstituted or substituted, N-heterocyclic compounds, such as bis-(hydantoin) or bis-(dihydrouracil) compounds, for example 1,1''-methylene-bis-(5,5-dimethylhydantoin), bis-(5,5dimethylhydantoinyl-3)-methane or 1,1''-methylene-bis-(5,6dihydrouracil) with ethylene oxide, for example ethylene oxide or propylene oxide, to give the corresponding monohydroxy or dihydroxy compounds, and subsequent glycidylation of the OH groups or of the OH group and the NH group to give the corresponding glycidyl ethers. The new diglycidyl ethers can be crosslinked by means the usual curing agents for epoxides to form insoluble and infusible products with good mechanical properties.