Bigger molecular weight diglycidyl ethers (n ≥ one) are formed by the response on the bisphenol A diglycidyl ether shaped with further more bisphenol A, this is called prepolymerization: The response between bisphenol A and epichlorohydrin ends in a pre-polymer that's then reacted by using a curing agent or “hardener. https://www.propanraya.com/id/produk/epoxy-fast-dry