Method for producing ethylene-vinyl acetate copolymer aqueous emulsion
AssigneeSumitomo Chemical Company, Limited
InventorTomoaki Sata
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Abstract
A method for producing an ethylene-vinyl acetate copolymer aqueous emulsion is provided which uses a redox catalyst comprising a transition metal salt and an erysorbic acid and/or an ascorbic acid, as the reducing agent thereof, and 1.8 to 10 mol of hydrogen peroxide, as an oxidizing agent thereof, per one mol of the erysorbic acid and the ascorbic acid, and by this method, an ethylene-vinyl acetate copolymer aqueous emulsion which causes no generation of formalin and in which discoloration is suppressed can be obtained.
Claims4
A method for producing an ethylene-vinyl acetate copolymer aqueous emulsion comprising co-polymerizing monomers comprising ethylene and vinyl acetate by using a redox catalyst comprising a transition metal salt and an erysorbic acid, as the reducing agent thereof, and 1.8 to 10 mol of hydrogen peroxide, as an oxidizing agent thereof, per one mol of the erysorbic acid.
Dependencies are inferred from the claim text.