PROBLEM TO BE SOLVED: To provide a highly productive method for producing a water-absorbing resin, the amounts of fine powder and dust of which are small, the amount of residual monomer of which is small and whose absorption rate is high.SOLUTION: The method for producing the water-absorbing resin is to crosslink and polymerize an aqueous solution of an acid group-containing unsaturated monomer. In the method, a solid material is included in the aqueous monomer solution and stationary polymerization is carried out by adjusting an initiation polymerization temperature to &ge40°C or a maximum temperature during the polymerization to &ge100°C.COPYRIGHT: (C)2008,JPO&INPIT【課題】微粉や粉塵も少ない吸水性樹脂であって、残存モノマーが少なく、高吸収速度の吸水性樹脂を生産性よく製造する方法を提供する。【解決手段】すなわち、本発明の吸水性樹脂の製造方法は、酸基含有不飽和単量体の水溶液を架橋重合する吸水性樹脂の製造方法であって、該単量体水溶液に固形物を含有させ、重合の開始温度を40℃以上または重合時の最高温度を100℃以上に制御して静置重合することを特徴とする。【選択図】なし
