Better molecular weight diglycidyl ethers (n ≥ 1) are formed via the response with the bisphenol A diglycidyl ether formed with further bisphenol A, this is named prepolymerization: Hardeners which clearly show only reduced or limited reactivity at ambient temperature, but which react with epoxy resins at elevated temperature are https://www.propanraya.com/id/produk/epoxy-fast-dry