Bisphenol A diglycidyl ether → Epoxide resin

Participants

Reaction Steps

N,N'-Diglycidyl-5,5'-dimethylhydantoin (8.04 epoxide equiv./kg, 100 g), bisphenol A diglycidyl ether (5.30 epoxide equiv./kg, 100 g), 1,4-butane diol (37.2 g) and N-phenylimidazole (0.2 g) are stirred at 120° C. for 5 hours. A further portion of 2-phenylimidazole (0.2 g) is added and the heating is continued at 120° C. for another 5 hours and then at 140° C. for 61/2 hours, by which time the epoxide content of the mixture is 2.44 equiv./kg.

Provenance & Evidence