Acrylic Acid → Phenoxyethyl acrylate methyl methacrylate acrylic acid

Participants

Reaction Conditions

Reaction Steps

In 2-liter three-necked flask equipped with a stirrer, a thermometer, a reflux cooling tube and a nitrogen gas inlet tube, 360.0 g of methyl ethyl ketone was fed, and the temperature was raised to 75° C. While the temperature inside the reaction vessel was maintained at 75° C., a mixed solution containing 180.0 g of phenoxyethyl acrylate, 162.0 g of methyl methacrylate, 18.0 g of acrylic acid, 72 g of methyl ethyl ketone, and 1.44 g of “V-601” (trade name, manufactured by Wako Pure Chemical Industries, Ltd.) was added dropwise to the flask at a constant rate so that the dropwise addition was completed in 2 hours. After completion of the dropwise addition, a solution containing 0.72 g of “V-601” and 36.0 g of methyl ethyl ketone was added to the flask, and the mixture was stirred for 2 hours at 75° C. Subsequently, a solution containing 0.72 g of “V-601” and 36.0 g of isopropanol was added to the flask, and the resulting mixture was stirred for 2 hours at 75° C. Subsequently, the temperature was raised to 85° C., and stirring was continued for another 2 hour. Thus, a resin solution of a phenoxyethyl acrylate/methyl methacrylate/acrylic acid (=50/45/5 [mass ratio]) copolymer was obtained.

Provenance & Evidence