Methacrylic Acid → Methacrylic acid ethylene oxide

Participants

Reaction Steps

683 parts of water, 11 parts of a sodium salt of a sulfate ester of an adduct of ethylene oxide methacrylate (ELEMINOL RS-30: manufactured by Sanyo Chemical Industries, Ltd.), 138 parts of styrene, 138 parts of methacrylic acid, and 1 part of ammonium persulfate were stirred for 15 minutes at 400 r.p.m. in a reaction vessel equipped with a stirring rod and a thermometer to obtain a white emulsion. The emulsion was heated until the temperature in the system reached 75° C., and allowed to react for five hours. The reactant was further added with 30 parts of 1% ammonium persulfate aqueous solution, and aged at 75° C. for five hours to obtain an aqueous dispersion of a vinyl resin (copolymer of styrene-methacrylic acid-sodium salt of sulfate ester of an adduct of ethylene oxide methacrylate) [fine particle dispersion 1]. The volume average particle diameter of [fine particle dispersion 1]measured by a LA-920 was 0.14 μm. A part of [fine particle dispersion 1]was dried to isolate the resin component. The Tg of the resin component was 152° C.

Provenance & Evidence