WATER ABSORBENT RESIN PARTICLE, ABSORBER, ABSORBENT ARTICLE, METHOD FOR MEASURING PERMEATION RETENTION RATE OF WATER ABSORBENT RESIN PARTICLE, AND METHOD FOR PRODUCING WATER ABSORBENT RESIN PARTICLE

摘要

Water-absorbent resin particles having a feeding retention rate of 10% or more are disclosed, the feeding retention rate being represented by the following formula using a feeding rate through a dry powder measured by a method including the steps (A), (B), and (C) in this order, and a feeding rate through a swollen gel measured by a method including the steps (A), (B), (D), and (E) in this order.