반응 #487491

반응 방정식

phenoxyethyl methacrylate

methacrylic acid

methyl methacrylate

→

phenoxyethyl methacrylate methyl methacrylate methacrylic acid

수율 162.8%

용매

methyl ethyl ketone

methyl ethyl ketone

methyl ethyl ketone

반응 조건

후처리

1. 1
   기타To a 1,000-ml three-neck flask equipped with a stirrer and a condenser
2. 2
   기타To this flask, a solution, prepared
3. 3
   workup.ADDITIONwas added dropwise over 3 hours
4. 4
   workup.ADDITIONAfter the completion of the dropwise addition
5. 5
   기타to react for an additional one hour
6. 6
   기타a solution prepared
7. 7
   workup.ADDITIONwas added
8. 8
   온도The temperature of the mixture was raised to 78° C.
9. 9
   온도the mixture was heated for 4 hours
10. 10
    기타The resulting reaction solution
11. 11
    기타was subjected to re-precipitation twice with an excess amount of hexane
12. 12
    기타the precipitated resin was dried

실험 절차

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.

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