Higher molecular fat diglycidyl ethers (n ≥ one) are formed because of the reaction of the bisphenol A diglycidyl ether formed with even further bisphenol A, this is named prepolymerization: Hardeners which present only minimal or constrained reactivity at ambient temperature, but which respond with epoxy resins at elevated temperature https://www.propanraya.com/id/produk/epoxy-fast-dry