Methacrylic Acid → Methacrylic acid ethylene oxide

Participants

Reaction Conditions

Reaction Steps

Into a reaction vessel equipped with a stirring rod and a thermometer, 683 parts of water, 16 parts of sodium salt of sulfuric acid ester of ethylene oxide adduct of methacrylic acid, Eleminol RS-30 (manufactured by Sanyo Chemical Industries Ltd.), 83 parts of styrene, 83 parts of methacrylic acid, 110 parts of butyl acrylate, and 1 part of ammonium persulfate were loaded, and then stirred at 400 rpm for 15 minutes to thereby obtain a white emulsion. The emulsion was heated to a system temperature of 75° C. and was allowed to react for 5 hours. Then, 30 parts of a 1% by volume 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 (resin fine particle dispersion liquid) of vinyl resin (a copolymer of styrene-methacrylic acid-butyl acrylate-sodium salt of sulfate ester of methacrylic acid-ethylene oxide adduct). The volume-average particle diameter of the resin fine particle dispersion liquid thus obtained, which was measured using a particle size distribution analyzer (LA-920 manufactured by Horiba, Ltd.), was 42 nm.

Provenance & Evidence