Subsequently, The PVAc undergoes a method generally known as alcoholysis (or hydrolysis) during the presence of an Liquor and a solid base or acid catalyst. The acetate teams in the PVAc are changed by hydroxyl groups, bringing about the development of PVA. Here is the admin account of Scheduling Tank. https://www.tjcyindustrialchem.com/news/what-is-pva.html