Vinyl acetate purification process

Details Vinyl acetate purification process Vinyl acetate purification process

C - Chemistry, Metallurgy

07

C

260/496.9

C07C 69/15 (2006.01) C07C 67/00 (2006.01) C07C 67/56 (2006.01)

Patent

CA 1167865

ABSTRACT A process for purifying vinyl acetate con- taminated with acetic acid, coloration agents, water and/or sodium chloride. The first stage consists of removing acetic acid by passing the vinyl acetate feed through a dehydrated anion exchange resin bed. The second stage consists of removing coloration agents by passing the vinyl acetate feed through a bed of activ- ated carbon. The third stage consists of removing water by passing the vinyl acetate feed through a bed of desiccant. The fourth stage consists of removing sodium chloride by passing the vinyl acetate feed through separate cation exchange resin and anion exchange resin beds or through a mixed resin bed.

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