Celvol 125 Polyvinyl alcohol 9002-89-5 Celanese Polyvinyl alcohol (PVOH) ADHESIVE Celvol polyvinyl alcohol combines high tensile strength with ease of film formation. Additionally, Celvol resins show excellent adhesive and bonding characteristics. Partially hydrolyzed grades have better adhesion to hydrophobic surfaces. The degree of hydrolysis affects the water sensitivity of both the resin and film. Water resistance increases with increasing hydrolysis. The super hydrolyzed grades should be used when maximum water resistance and humidity resistance are desired. Celvol polyvinyl alcohol resins are generally unaffected by greases, petroleum hydrocarbons and animal or vegetable oils. Resistance to organic solvents increases with the degree of hydrolysis. Celvol polyvinyl alcohol film can be plasticized with glycerol or the lower molecular weight glycols. These materials generally act as humectants, holding water in the film. Polyvinyl alcohol adheres particularly well to cellulosic substrates such as paper and wood. Adding it to a polyvinyl acetate emulsion will increase the efficiency as well as the tensile strength of the resulting adhesive. super and fully hydrolyzed grades, is used to provide a tailored degree of wet tack, set speed, viscosity and penetration into the substrate. Applications : solid fiber laminating and tube and core winding. Super hydrolyzed polyvinyl alcohol resin. Used as the major component in adhesives. Provides high tensile strength, ease of film formation, very good adhesion to cellulosic substrates such as paper and wood and bonding characteristics. Shows resistance to greases, petroleum hydrocarbons and animal or vegetable oils, and to organic solvents. Provides tailored degree of wet tack, set speed, viscosity and penetration. Gives very good water and humidity resistance. Applications: solid fiber laminating and tube and core winding.