Polyvinyl alcohols are colorless, synthetically manufactured resins or polymers. It is synthesized by dissolving polyvinyl acetate polymer in an alcohol to replace acetate group by hydroxyl group. Properties and applications of polyvinyl alcohols depend upon molecular weight and degree of hydrolysis present in the resulting polymer. Depending on degree of hydrolysis; polyvinyl alcohols are classified as fully hydrolyzed grade having 98-99% hydrolysis, intermediate grade have 97% hydrolysis and partially hydrolyzed grade have about 88% of hydrolysis. Properties of polyvinyl alcohols include good barrier properties, bio-degradable, high bonding capacity, excellent film formation, no health hazards. The applications of polyvinyl alcohols include textiles, polyvinyl butyral resins, adhesives, paper and specialty paper, polymerization, cleaning agents, PVC production, emulsions, ceramics, cosmetics, wood primers and construction.