Synthesis of bisphenol A diglycidyl ether The most common epoxy resins are based upon reacting epichlorohydrin (ECH) with bisphenol A,  resulting in a special chemical material often known as bisphenol A diglycidyl ether (commonly referred to as BADGE or DGEBA).Varieties of Epoxy Units Think about an epoxy procedure just like a recipe: you start w