Process for preparing aqueous emulsion of ethylene-acetoethylene ester compolymer

Application Number: 00124966
Application Date: 2000.09.27
Publication Number: 1290711
Publication Date: 2001.04.11
Priority Information: 2000/1/27 JP 018599/2000; 1999/9/30 JP 278852/1999
International: C08F218/08
Applicant(s) Name: Sumitomo Chemical Co., Ltd.
Inventor(s) Name: Sata Tomoaki
Patent Agency Code: 11021
Patent Agent: yan fang
Abstract A practically excellent 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.