| Abstract: | Diglycidylesters of cycloaliphatic dicarboxylic acids can be prepared in a good yield by the catalytic action of quarternary ammonium salts, or less universally also of thioethers. A considerable attention should then be especially paid to dehydrochloration. In comparison to epoxy resins from bisphenol A, it is an advantage of these products to have lower viscosity, higher reactivity with anhydrides, acids, and dicyandiamide, and excellent insulating properties, especially as far as are and track resistances are concerned. The best properties were found in diglycidylester of hexahydrophthalic acid, which are also less toxic. A disadvantage is a lower heat distortion point and a lower alkali resistance. |
