Methacrylic Acid → 5-Phenyl-2,4-pentadienoic acid

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Reaction Conditions

Reaction Steps

A typical process for obtaining the resin emulsion (styrene-acrylic acid) is as follows. A reactor having a stirrer, a reflux condenser, a dripping device, and a thermometer is loaded with 800 g of ion-exchanged water and 1 g of sodium lauryl sulfate, and the reactor is heated to 75° C. under stirring while nitrogen is introduced. Six (6) grams of potassium persulfate, a polymerization initiator, is added and dissolved with the internal temperature maintained at 75° C. An emulsion is prepared beforehand by combining 450 g of ion-exchanged water and 2 g of sodium lauryl sulfate with 20 g of acrylamide, 600 g of methyl methacrylate, 215 g of butyl acrylate, 30 g of methacrylic acid, and 5 g of triethylene glycol diacrylate under stirring, and this emulsion is continuously added dropwise to the reaction solution over 5 hours. The obtained mixture is incubated for 3 hours. After the resulting aqueous emulsion has cooled to room temperature, ion-exchanged water and sodium hydroxide solution are added until the solid content is 30% by mass and the pH is 8. The resin emulsion (styrene-acrylic acid) is obtained in this way.

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