[C:1]([O:5][CH2:6][CH3:7])(=[O:4])[CH:2]=[CH2:3].[C:8]([O:13][CH3:14])(=[O:12])[C:9]([CH3:11])=[CH2:10].C(O)(=O)C(C)=C.C(OOC(=O)C1C=CC=CC=1)(=O)C1C=CC=CC=1.O.N>O.C(O)(C)C>[C:1]([O:5][CH2:6][CH3:7])(=[O:4])[CH:2]=[CH2:3].[C:8]([O:13][CH3:14])(=[O:12])[C:9]([CH3:11])=[CH2:10]To 150 g of isopropanol were added 55 g of ethyl acrylate, 35 g of methyl methacrylate and 10 g of methacrylic acid. To the resulting mixture was added 0.5 g of benzoyl peroxide, and thereafter, the mixture thus-obtained was subjected to polymerization reaction at 80° C. for 7 hours. Subsequently, 200 g of water and 4 g of 28% ammonia water were added thereto, and then, the isopropanol was completely removed by distillation to obtain an ethyl acrylate/methyl methacrylate copolymer.
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