Mixed glycidyl derivatives of cyanuric acid and phenols

Claim 1

A PROCESS FOR PREPARING COMPOSITE EPOXIDE RESINS WHICH COMPRISES REACTING CYANURIC ACID IN AN EXCESS OF EPICHLOROHYDRIN USING AN ORGANIC BASE AS CATALYST TO FORM POLYCHLOROHYDRIN DERIVATIVES OF CYANURIC ACID, ADDING TO AND DISSOLVING THEREIN A POLYHYDRIC PEHNOL AND REACTING THE RESULTING SOLUTION WITH AN ALKALI METAL HYDROXIDE, SAID COMPONENTS BEING IN A RATIO OF AT LEAST ABOUT 2 MOLS OF IPICHLOROHYDRIN FOR EACH ACTIVE HYDROGEN EQUIVALENT OF THE CYANURIC ACID AND FOR EACH ACTIVE HYDROGEN EQUIVALENT OF THE POLYHYDRIC PHENOL AND WHEREIN THE AMOUNT OF ALKALI METAL HYDROXIDE USED IS SUBSTANTIALLY EQUIVALENT TO THE TOTAL ACTIVE HYDROGENS OF THE CYANURIC AID AND THE POLYHYDRIC PHENOL TO FORM A COMPOSITE EPOXIDE RESIN OF POLYGLYCIDYL ISOCYANUARTE AND POLYGLYCIDYL ETHERS OF THE POLYHYDRIC PHENOL.