Better molecular excess weight diglycidyl ethers (n ≥ 1) are fashioned from the reaction with the bisphenol A diglycidyl ether fashioned with additional bisphenol A, this is called prepolymerization: Epoxy resins are polymeric or semi-polymeric materials or an oligomer, and as a result almost never exist as pure substances, given https://www.propanraya.com/id/produk/epoxy-fast-dry