| 摘要 |
The present invention provides a water absorbent comprising water-absorbing resin particles, which can exhibit significantly high water-absorption rate, although having relatively large average particle diameter. The present invention relates to a water absorbent comprising water-absorbing resin particles which comprises: (1) particles having a particle diameter of 150 to 850 µm in a ratio of 90 to 100% by weight based on the total weight of the water absorbent, and particles having a particle diameter below 150 µm in a ratio of 0 to 5% by weight based on the total weight of the water absorbent; and (2) particles having a particle diameter of not less than 300 µm in a ratio of not less than 50% by weight and below 95% by weight based on the total weight of the water absorbent; and wherein (3) said agglomerated particles have a water-absorption rate index per surface area (a) of not more than 700 sec/mm2. |
