| abstract |
(57) [Summary] [Object] To provide a method for producing a particulate hydrogel polymer having a high water absorption capacity and a low water-soluble content, and a water-absorbent resin. [Composition] In a method for producing a particulate hydrogel polymer in which a hydrogel polymer having a crosslinked structure is subjected to shearing force to be subdivided into particles in a container, heating to a temperature of 40 to 110 ° C is performed. 0.01 to 1.5 kg / in the hydrous gel polymer According to the method for producing a particulate hydrogel polymer, which is characterized by repeatedly applying a shearing force while applying a load of cm 2 . [Effect] A water-absorbent resin which does not contain additives such as a lubricant, has a narrow particle size distribution, and has a good drying efficiency, and which has a high water absorption rate and a small fine powder content. Can be obtained. |