This resin is made through the elimination reaction process between polyvinyl alcohol and butanal with acid as a catalyst. It has the fine characteristics of being transparent, insulating, impacting resistant and highly adhesive to glass, metal, wood, ceramics, leather and fibres etc. It can be used as sandwich material for glass, coating for lumber, metals, and priming paint for metals etc. The products are non-toxic, odorless, with good adhesiveness and highly transparent. The PVB resin made by is used for making PVB film.