Erkol W 40/140 Polyvinyl alcohol Erkol Vinyl >> Polyvinyl Alcohol (PVOH) Coatings Other industry >> Ceramic Coating Erkol Polyvinyl Alcohol (PVA) is a synthetic resin produced by polymerisation of Vinyl Acetate (VAM) followed by hydrolysis of the Polyvinyl Acetate (PVAc) polymer. The degree of polymerisation determines the molecular weight and viscosity of Erkol in solution. The degree of hydrolysis (saponification) signifies the extent of conversion of the Polyvinyl Acetate to the Polyvinyl Alcohol. Erkol Polyvinyl Alcohol is a Safe, Biodegradable, Water Soluble polymer with an enormous field of applications because of its unique set of properties. Erkol properties vary according to its Molecular Weight (MW) or polymer chain length and its Degree of Hydrolysis or Alcohol group (OH) content. The relation of principal Erkol properties with Molecular Weight and Degree of Hydrolysis is described in the attached table: High Molecular Weight Solvent resistance Tensile strength Water resistance Adhesive strength Viscosity Surface activity Emulsifying / dispersing power High Degree of Hydrolysis Solvent resistance Tensile strength Water resistance Adhesion to hydrophilic surfaces Viscosity Light stability Excellent Ceramics binder and coating Safe, biodegradable, water soluble polyvinyl alcohol (PVA). Used in coatings. Possesses properties that vary according to the molecular weight or polymer chain length and the degree of hydrolysis or alcohol group content. Offers very good light stability. <br> Applications: ceramics binder and coating.