| abstract |
(57) [Summary] [Purpose] (1) Excellent safety, (2) A large effect of improving the water absorption capacity under pressure while maintaining a high water absorption capacity at normal pressure, and (3) Powder even under high humidity. (EN) A method for modifying a water absorbent resin that does not cause body agglomeration. [Structure] A specific water-absorbent resin is mixed with a specific amount of at least one polyhydric alcohol derivative selected from a ketalized product, an acetalized product, and an alkyl ether of a polyhydric alcohol, followed by heat treatment at 160 to 300 ° C. |