Problem to be solved: to provide a water absorbent capable of uniformly distributing the 1-hydroxy-2-pyridone derivative near the surface of the water absorbent resin without causing the flowability of the water absorbent resin to sufficiently exhibit the function of the 1-hydroxy-2-pyridone derivative .Solution: additive liquid containing polyvalent alcohol, water and 1-hydroxy-2-pyridone derivative (the concentration of the polyhydric alcohol in the solvent or dispersion medium of the additive liquid is 30% or more and 55% by weight or less) is added to the water absorbent resin.No selection【課題】吸水性樹脂の粉体流動性を損なうことなく、吸水性樹脂の表面近傍に1-ヒドロキシ-2-ピリドン誘導体を均一に分布させ、1-ヒドロキシ-2-ピリドン誘導体の機能を十分に発揮させ得る吸水剤の製造方法を提供する。【解決手段】多価アルコール、水及び1-ヒドロキシ-2-ピリドン誘導体を含む添加液(添加液の溶媒又は分散媒中の上記多価アルコールの濃度は、30%重量以上55重量%以下である)を、吸水性樹脂に添加する。【選択図】なし
