It is made by dissolving polyvinyl alcohol in water, adding butyraldehyde and catalyst such as hydrochloric acid or sulfuric acid under stirring, conducting acetal reaction at 15-50 ° C, and then washing and centrifugal drying. It has high transparency, cold resistance, impact resistance, and resistance to ultraviolet radiation. Good adhesion with metal, glass, wood, ceramics, fiber products, etc. It is used for making intermediate interlayer of inorganic or organic glass, coatings and adhesive, etc.
Organic polymer materials -> Plastics