| abstract |
PROBLEM TO BE SOLVED: To provide a method for producing a vinyl ester resin which is excellent in storage stability and transparency of an aqueous solution and is effective as a dispersing aid for suspension polymerization of a vinyl compound. SOLUTION: In producing a vinyl ester resin, an azo polymerization initiator (a) having a terminal carboxyl group, preferably 4,4'-azobis-4-cyanovaleric acid or dimethyl is used as a polymerization initiator. −2, A method for producing a vinyl ester resin using 2'-azobisisobutyrate. |