Bigger molecular excess weight diglycidyl ethers (n ≥ one) are formed through the response in the bisphenol A diglycidyl ether shaped with further bisphenol A, this is known as prepolymerization: Hardeners which demonstrate only reduced or constrained reactivity at ambient temperature, but which react with epoxy resins at elevated temperature https://www.propanraya.com/id/produk/epoxy-fast-dry