Elvanol 52-22 Polyvinyl alcohol DuPont Vinyl >> Polyvinyl Alcohol (PVOH) Marine /Anti-Corrosive / Protective >> Heavy duty (anti-corrosive) Other industry >> Paper coatings Soluble in water DuPont Elvanol® polyvinyl alcohol (PVOH, sometimes also referred to as PVA) is a water-soluble synthetic polymer with excellent film-forming, emulsifying, and adhesive properties. This versatile polymer offers outstanding resistance to oil, grease and solvents, plus high tensile strength, flexibility, and high oxygen barrier. DuPont markets three types of Elvanol®: fully hydrolyzed, partially hydrolyzed, and copolymers. All are made by alcoholysis of polyvinyl acetate (PVAc). The fully hydrolyzed grades contain few, if any, residual acetate groups; while partially hydrolyzed grades retain some of the residual acetate groups. The partially hydrolyzed grades dissolve in water at room temperature; fully hydrolyzed grades dissolve in hot (200 degree F) water, and remain in solution when cooled to room temperature. Commercially Available Grades of Partially Hydrolyzed Elvanol® Polyvinyl Alcohol Pigmented coating of paper Photosensitive coatings Temporary protective coatings Binder for texture coatings Partially hydrolyzed polyvinyl alcohol. Used in pigmented coating of paper, photosensitive and temporary protective coatings and as a binder for texture coatings. Offers very good film-forming, emulsifying, and adhesive properties, outstanding resistance to oil, grease and solvents, high tensile strength, flexibility, and high oxygen barrier.