| abstract |
The present invention provides a water-absorbing agent that maintains excellent water-absorbing characteristics for a long time even when the urine composition changes. A particulate water-absorbing agent mainly composed of a water-absorbing resin obtained by crosslinking and polymerizing an unsaturated monomer, having a non-pressure absorption capacity (CRC) of 32 g / g or more in physiological saline, and having a mass average Particle diameter (D50) is 200 to 400 μm, particles less than 150 μm are 0 to 2 mass%, soluble content deterioration increase amount is 0 to 15 mass%, and 1 hour soluble content in the degradation test solution is 0.1 to 0.1 mass%. 30% by mass water-absorbing agent. [Selection figure] None |