Larger molecular weight diglycidyl ethers (n ≥ one) are formed from the reaction with the bisphenol A diglycidyl ether fashioned with further bisphenol A, this is referred to as prepolymerization: Epoxy resins are polymeric or semi-polymeric supplies or an oligomer, and as a result hardly ever exist as pure substances, https://www.propanraya.com/id/produk/epoxy-fast-dry