Elvanol 50-42 Polyvinyl alcohol DuPont Polyvinyl alcohol (PVOH) ADHESIVE >> Water-based 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. The copolymer grades, developed specifically for warp sizing, offer a unique balance of properties that make them the most versatile PVOH grades available to the textiles market. Elvanol® is widely used in diverse applications such as: adhesives for paper and paperboard, wood, textiles, leather, porous ceramic surfacesand other water-absorbent substrates; The unique combination of properties inherent in Elvanol® has resulted in its use in a wide variety of industrial adhesives. Water solubility - combined with high tensile strength, flexibility, and tack or tackiness - makes it one of the most useful synthetic polymers in the adhesives industry. Synthetic polymer with good film-forming, emulsifying, and adhesive properties. Offers outstanding resistance to oil, grease and solvents, plus high tensile strength, flexibility, and high oxygen barrier.