Greater molecular excess weight diglycidyl ethers (n ≥ one) are fashioned by the response in the bisphenol A diglycidyl ether formed with additional bisphenol A, this is called prepolymerization: Hardeners which show only lower or restricted reactivity at ambient temperature, but which respond with epoxy resins at elevated temperature are https://www.propanraya.com/id/produk/epoxy-fast-dry