Reaktion #941408
ord-17f0ad50710f413eb757abd26f3352ab
Reaktionsgleichung
Edukte
Reagenzien
Lösungsmittel
Reaktionsbedingungen
Aufarbeitung
- 1SonstigeTo a reaction vessel equipped with a stirrer
- 2Sonstigeto obtain a white emulsion
- 3TemperaturThe white emulsion was heated
- 4workup.WAITthe reaction was performed for 5 hours
- 5workup.WAITthe reaction mixture was matured at 75° C. for 5 hours
Vorschrift
To a reaction vessel equipped with a stirrer and a thermometer, 683 parts of water, 11 parts of sodium salt of the sulfuric acid ester of methacrylic acid ethylene oxide adduct (ELEMINOL RS-30, manufactured by Sanyo Chemical Industries, Ltd.), 80 parts of styrene, 83 parts of methacrylic acid, 110 parts of butyl acrylate, 12 parts of butyl thioglycollate, and 1 part of ammonium persulphate were poured and stirred at 400 rpm for 15 minutes to obtain a white emulsion. The white emulsion was heated, the temperature in the system was raised to 75° C. and the reaction was performed for 5 hours. Next, 30 parts of an aqueous solution of 1% ammonium persulphate was further added to the reaction vessel, and the reaction mixture was matured at 75° C. for 5 hours to obtain an aqueous dispersion liquid of a vinyl resin (copolymer of styrene-methacrylic acid-butyl acrylate-sodium salt of the sulfuric acid ester of methacrylic acid ethylene oxide adduct). This aqueous solution was taken as [particulate emulsion 1]. The volume average particle diameter of the [particulate emulsion 1] measured by a laser diffraction particle size distribution analyzer (LA-920, manufactured by SHIMADZU Corp.) was 120 nm. After drying a part of [particulate emulsion 1] and isolating the resin, the glass transition temperature (Tg) of the resin was 42° C. and the mass average molecular mass was 30,000.