WATER ABSORBING RESIN PARTICLE AND, MAKING USE OF THE SAME, ABSORBER MATERIAL AND ABSORBENT ARTICLE

摘要

Water-absorbent resin particles, characterized in that the water-absorbent resin particles have a water-retention capacity of physiological saline (X) of from 30 to 70 g/g, that the water-retention capacity of physiological saline (X) and a water absorption index under pressure (Y) satisfy the relationship of the formula: [Water absorption index under pressure (Y)] ‰¥ 150 - 2 [Water-retention capacity of physiological saline (X)], and that the water-absorbent resin particles have a liquid-suction rate from pulp of 20 g/g/5 minutes or more; and an absorbent material and an absorbent article, each in which the water-absorbent resin particles are used. The absorbent material in which the water-absorbent resin particles are used can be suitably used, for example, in absorbent articles such as disposable diapers and sanitary napkins.