| 摘要 |
PROBLEM TO BE SOLVED: To provide a water-absorbing agent having enhanced performance in both the centrifuge retention capacity and the absorption against pressure (particularly, the vertical diffusion absorption amount) of a water-absorbing resin, and also to provide at low cost a water-absorbing agent which can provide an absorbent body having a large absorption amount in a diaper, having improved diffusibility and liquid permeability, and having a smaller re-wet amount.SOLUTION: This invention relates to a particulate water-absorbing agent containing a surface-crosslinked polyacrylic acid (salt)-based water-absorbing resin as a main component, and containing at least one spacer selected from a polycation and water-insoluble fine particles, wherein the particulate water-absorbing agent satisfies a free swell capacity (FSC) of 55 to 65 [g/g], an absorption against pressure (AAP-4.83 kPa) of 20 to 30 [g/g], and a vertical diffusion absorption amount under pressure (VDAUP-4.83 kPa) of 30 to 80 g. |
