Water absorbing resin particles, method for manufacturing water absorbing resin particles, absorption body, absorptive article, and water-sealing material

摘要

Disclosed is a water-absorbent resin particle in which the water-absorption rate of physiological saline is 1 second to 15 seconds, the median particle size is 100 μm to 600 μm, and the residual volatile component content is 1.5% by weight or less.

主权项

1. A water-absorbent resin particle, wherein a water-absorption rate of physiological saline is 1 second to 15 seconds, a median particle size is 100 μm to 600 μm, a residual volatile component content is 1.5% by weight or less, and the water-absorption rate is measured by the amount of time from addition of 2.0±0.002 g of the water-absorbent resin particles into 50.0±0.1 g of vortexed physiological saline at a rotating speed of 600 rpm until the vortex on the liquid surface converged.