The Most popular epoxy resins are either diglycidyl ethers of bisphenol A, which is created by reacting bisphenol A (BPA) with epichlorohydrin (ECH). the molecular excess weight is managed by modifying the ratio of ECH to BPA; large ratios produce reduce molecular weights. This sort of epoxy resin is frequently https://www.propanraya.com/kategori/cat-lantai