Adducts of polyglycidyl compounds and dialkoxyphosphono-alkyl derivatives of cyclic ureides

An adduct, containing epoxide groups, consisting essentially of the reaction product of a polyglycidyl compound selected from the group consisting of polyglycidyl compounds of cyclic ureides, polyglycidyl compounds of bisphenol A, and a cycloaliphatic polyglycidyl compound and a compound of the formula ##EQU4## wherein Z is methylene, methylene substituted by alkyl groups of 1-6 carbon atoms, cyclopentylidene or cyclohexylidene;

• A is alkylene of 1-12 carbon atoms, or --CH.sub.2 CH.sub.2 O CH.sub.2 CH.sub.2 --;
• and R.sub.1 and R.sub.2 each is alkyl or alkenyl with up to 4 carbon atoms, or R.sub.1 and R.sub.2 together are alkylene of 2-5 carbon atoms.