PREPARATION METHOD OF POLY(VINYL ESTER) OR POLY(VINYL ETHER) AND A POLY(VINYL) ALCOHOL OBTAINED THEREFROM

摘要

The present invention is a polyvinyl ester or polyester relates to the industrial use of polyvinyl alcohol resulting from the production process and resulting in the vinyl ether, a water-soluble catalyst, an emulsifying agent and using water to prepare a seed, and, where vinyl acetate or isobutyl vinyl ether, adding a water-soluble azo polymerization catalyst and an emulsifying agent ah continuously provides a process for the preparation of a polyvinyl ester or polyvinyl ether comprises a low temperature seed emulsion polymerization.; This invention may be that by using the seed emulsion polymerization method of a relatively low temperature and a composite catalyst system producing a polyvinyl ester or polyvinyl ether of the polymerization degree and excellent in the productivity by using it, and having a degree of polymerization of the polymerization speed is fast and high, the high rigidity history processability for industrial use can provide excellent polyvinyl alcohol.