GRANULAR WATER ABSORBENT COMPRISING WATER ABSORBING RESIN AS THE MAIN COMPONENT

摘要

A water-absorbing goods having excellent absorption performance in practical use is to be provided at low price. A particulate water-absorbing agent provided by one aspect of the present invention is a particulate water-absorbing agent comprising a polyacrylate salt-type water-absorbing resin as a main component, and satisfying the following (a) and (b):
(a) absorption capacity without load in artificial urine (A) is equal to or higher than 60 g/g; and
(b) an increase rate of absorption capacity without load in artificial urine (B) relative to artificial urine (A) is equal to or larger than 20%. In addition, a particulate water-absorbing agent provided by another aspect of the present invention is a particulate water-absorbing agent comprising a polyacrylate salt-type water-absorbing resin as a main component, and satisfying the following (c) and (d):
(c) absorption capacity without load in artificial urine (A) is equal to or higher than 60 g/g; and
(d) weight average molecular weight (Mw) of the main chain of the water-absorbing resin is equal to or higher than 1, 000, 000 and molecular weight distribution (Mw/Mn) thereof is equal to or smaller than 3.3.