2-Ethylhexyl acrylate → MAU 2-ethylhexyl acrylate

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In 59.69 g of methanol were dissolved 18.59 g (69.02 mmol) of 11-methacrylamidoundecanoic acid (MAU), 1.41 g (7.67 mmol) of 2-ethylhexyl acrylate (Sigma-Aldrich Japan K.K.), and 0.31 g (1.89 mmol) of azobisisobutyronitrile (Nacalai Tesque, Inc.). The solution was deaerated by bubbling nitrogen for 60 minutes. The container was covered with a septum, and the polymerization was conducted by heating at 60° C. for 20 hours. After the completion of the polymerization reaction, yellow candy-like material was obtained. To this was added 80 g of methanol, and the material was dissolved. The obtained solution was dropwise added into a large excess of ethyl acetate, and the resulting precipitate was collected by filtration under suction. After drying under reduced pressure, 13.01 g of random MAU/2-ethylhexyl acrylate copolymer (90/10) was obtained (yield: 65.0%). The weight average molecular weight was 560000.

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