a)coproducing acetic acid and acetic anhydride;b)contacting the acetic acid and acetic anhydride with reactants under conditions sufficient to form vinyl acetate;c)contacting the vinyl acetate in under conditions suffi- 10 cient to form poly vinyl acetate;d)contacting the poly vinyl acetate with a base and methanol under conditions sufficient to form poly vinyl alcohol and methyl acetate as a byproduct;e)treating the methyl acetate sufficient to remove at least 15 some of the impurities therewith;f)directing the methyl acetate to a coproduction process fbr production of acetic acid and acetic anhydride.