| abstract |
Water-absorbing resin particles comprising a cross-linked polymer comprising a monomer unit derived from a water-soluble ethylene-unsaturated monomer are disclosed, wherein an initial swelling force as measured in accordance with a swelling force test conducted by a predetermined method is 8 N or more, and in addition, a ratio of particles having a particle diameter of more than 250 µm and 850 µm or less is 70% by mass or more and a ratio of particles having a diameter of particle size of 250 µm or less is 20% by mass or less with respect to the total amount of water-absorbing resin particles. |