反应详情

温度

72 °C

To a 1,000-ml three-neck flask equipped with a stirrer and a condenser, 88 g of methyl ethyl ketone were added, and heated to 72° C. under a nitrogen atmosphere. To this flask, a solution, prepared by dissolving 0.85 g of dimethyl-2,2′-azobisisobutyrate, 50 g of phenoxyethyl methacrylate, 13 g of methacrylic acid and 37 g of methyl methacrylate in 50 g of methyl ethyl ketone, was added dropwise over 3 hours. After the completion of the dropwise addition, the content in the flask was allowed to react for an additional one hour, and a solution prepared by dissolving 0.42 g of dimethyl-2,2′-azobisisobutyrate in 2 g of methyl ethyl ketone was added thereto. The temperature of the mixture was raised to 78° C., and the mixture was heated for 4 hours. The resulting reaction solution was subjected to re-precipitation twice with an excess amount of hexane, and the precipitated resin was dried. 96.5 g of a phenoxyethyl methacrylate/methyl methacrylate/methacrylic acid copolymer (copolymerization ratio by mass %=50/37/13) was thus obtained. This copolymer is referred to as water-insoluble resin P-2.

1. customTo a 1,000-ml three-neck flask equipped with a stirrer and a condenser
2. customTo this flask, a solution, prepared
3. additionwas added dropwise over 3 hours
4. additionAfter the completion of the dropwise addition
5. customto react for an additional one hour
6. customa solution prepared
7. additionwas added
8. temperatureThe temperature of the mixture was raised to 78° C.
9. temperaturethe mixture was heated for 4 hours
10. customThe resulting reaction solution
11. customwas subjected to re-precipitation twice with an excess amount of hexane
12. customthe precipitated resin was dried