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PEP Review 2010-1

Polyvinyl Alcohol Production

Published: January 2010

In this review, the process to produce polyvinyl alcohol from vinyl acetate is updated based on recent patents from Kuraray Company. In this process, vinyl acetate undergoes solution polymerization in methanol. The resulting polyvinyl acetate is hydrolyzed in methanol solution with sodium hydroxide to produce polyvinyl alcohol. By-product methyl acetate that is produced is hydrolyzed to form acetic acid and methanol. The process economics are based on the production of 100 million lb/yr (45,000 metric tons/yr) of polyvinyl alcohol.

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