Methacrylic Acid → Methacrylic acid ethylene oxide

Participants

Reaction Conditions

Reaction Steps

A reaction container equipped with a stirring rod and a thermometer was charged with 683 parts by mass of water, 11 parts by mass of sodium salt of sulfuric acid ester of ethylene oxide adduct of methacrylic acid (ELEMINOL RS-30, product of Sanyo Chemical Industries Ltd.), 138 parts by mass of styrene, 138 parts by mass of methacrylic acid and 1 part by mass of ammonium persulfate. The resultant mixture was stirred at 400 rpm for 15 min to thereby obtain a white emulsion. The white emulsion was heated to a system temperature of 75° C. and was allowed to react for 5 hours. Then, 30 parts by mass of a 1% by mass aqueous ammonium persulfate solution was added to the reaction mixture, followed by aging at 75° C. for 5 hours, to thereby obtain an aqueous dispersion [particle dispersion liquid 1] of a vinyl resin (a copolymer of styrene-methacrylic acid-sodium salt of sulfate ester of methacrylic acid-ethylene oxide adduct).

Provenance & Evidence