반응 #71319

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
   기타equipped with a stirrer and a cooling tube
2. 2
   기타Into the flask, A solution prepared
3. 3
   workup.ADDITIONwas added dropwise to the flask over a period of 3 hours
4. 4
   workup.ADDITIONAfter completion of the addition
5. 5
   기타a solution prepared
6. 6
   workup.ADDITIONwas added into the flask
7. 7
   온도the solution was heated at 78° C. for 4 hours
8. 8
   기타The reaction solution thus obtained
9. 9
   기타was reprecipitated twice in an excess amount of hexane
10. 10
    기타the precipitated resin was dried

실험 절차

88 g of methyl ethyl ketone was placed in a 1000-mL three-necked flask equipped with a stirrer and a cooling tube, and heated to 72° C. in a nitrogen atmosphere. Into the 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 to the flask over a period of 3 hours. After completion of the addition, the reaction was continued for further one hour, and then a solution prepared by dissolving 0.42 g of dimethyl 2,2′-azobisisobutyrate in 2 g of methyl ethyl ketone was added into the flask, and the solution was heated at 78° C. for 4 hours. The reaction solution thus obtained was reprecipitated twice in an excess amount of hexane, and the precipitated resin was dried to obtain 96.5 g of a phenoxyethyl methacrylate/methyl methacrylate/methacrylic acid (copolymerization ratio [% by mass]=50/37/13) copolymer (resin dispersant P-1).

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