The Preferred epoxy resins are possibly diglycidyl ethers of bisphenol A, which can be developed by reacting bisphenol A (BPA) with epichlorohydrin (ECH). the molecular body weight is controlled by modifying the ratio of ECH to BPA; substantial ratios produce lessen molecular weights. From the realm of composites, epoxy resins https://www.propanraya.com/kategori/cat-lantai