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

Participants

Reaction Conditions

Reaction Steps

The process of obtaining the resin emulsion (styrene-acrylic acid) was as follows. A reactor having a stirrer, a reflux condenser, a dripping device, and a thermometer was loaded with 800 g of ion-exchanged water and 1 g of sodium lauryl sulfate, and the reactor was heated to 75° C. under stirring while nitrogen was introduced. Six (6) grams of potassium persulfate, a polymerization initiator, was added and dissolved with the internal temperature maintained at 75° C. An emulsion was 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 was continuously added dropwise to the reaction solution over 5 hours. The obtained mixture was incubated for 3 hours. After the resulting aqueous emulsion had cooled to room temperature, ion-exchanged water and sodium hydroxide solution were added until the solid content was 30% by mass and the pH was 8. The resin emulsion (styrene-acrylic acid) was obtained in this way.

Provenance & Evidence