To provide a method for manufacturing a polycarboxylic acid-based copolymer which permits the manufacture, by an aqueous solution polymerization with raw materials charged at a time, of a polycarboxylic acid-based copolymer and continuous execution of all reactions in one reactor thereby to give the polycarboxylic acid-based copolymer at a high polymer content with good productivity at a low cost.
The method for manufacturing a polycarboxylic acid-based copolymer comprises copolymerizing a polyoxyalkylene derivative (a) bearing a 2-8C unsaturated hydrocarbyl group with an unsaturated carboxylic acid-based compound (b) in the presence of a water-soluble initiator (c) by aqueous solution polymerization, where the ratio of the charged components (a), (b) and (c) is such that 1.2-3.5 moles of (b) and 0.05-0.8 mole of (c) are charged per mol of (a), all raw materials are charged at a time and the polymerization is carried out at a polymerization temperature of 45-65°C.
ITO AKINORI
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大津隆行，他, ラジカル重合, vol. 第２刷, JPN6013043857, 20 June 1968 (1968-06-20), pages 82, ISSN: 0002623478
監修者 蒲池幹治，遠藤剛, ラジカル重合ハンドブック−基礎から新展開まで−, JPN6013043852, 10 August 1999 (1999-08-10), pages 173, ISSN: 0002623476
編集者 高分子学会, 新高分子実験学 全１０巻 第２巻 高分子の合成・反応（１）−付加系高分子の合成−, JPN6013043854, 15 June 1995 (1995-06-15), pages 31, ISSN: 0002623477
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