反应详情

温度

72 °C

88 g of methyl ethyl ketone was added to a 1000 ml three-necked flask that included a stirrer and condenser and heated in a nitrogen atmosphere to 72° C., and a solution in which 0.85 g of dimethyl-2,2′-azobisisobutyrate, 50 g of phenoxyethyl methacrylate, 13 g of methacrylic acid, and 37 g of methyl methacrylate were dissolved in 50 g of methyl ethyl ketone was added dropwise thereto over three hours. After reacting for a further hour after the end of dropwise addition, a solution in which 0.42 g of dimethyl-2,2′-azobisisobutyrate was dissolved in 2 g of methyl ethyl ketone was added thereto, and heated to and maintained at 78° C. for four hours. The obtained reaction solution was reprecipitated twice in excess hexane and the precipitated resin was dried to obtain 96.5 g of a phenoxyethyl methacrylate/methyl methacrylate/methacrylic acid (copolymer ratio [mass ratio]=50/37/13) copolymer (Water-Insoluble Resin P-1)

1. additionwas added dropwise
2. waitAfter reacting for a further hour
3. additionafter the end of dropwise addition
4. additionwas added
5. temperatureheated to and
6. temperaturemaintained at 78° C. for four hours
7. customThe obtained reaction solution
8. customwas reprecipitated twice in excess hexane
9. customthe precipitated resin was dried