Method of preparing ethylene-vinyl acetate copolymer and Saponified ethylene-vinyl acetate copolymer

摘要

The present invention by improving the process for recovering the vinyl acetate and ethylene which are capable of inhibiting the visible imperfections (particularly colored) in the molding-provides a process for the production of vinyl acetate copolymer and a saponified product. When the alcohol-based solvent with an oxygen concentration deoxygenation of injecting when recovering vinyl acetate less than 60ppm, can suppress the coloration of the saponified product due to the effect of the oxygen-molded article.