Patent ID: 7473470

Claim:
A particulate water absorbing agent having irregularly pulverized shape, wherein said particulate water absorbing agent comprises a surface crosslinked water-absorbing resin obtained by crosslinking polymerization of an unsaturated monomer mainly composed of acrylic acid and/or salts thereof, said particulate water absorbing agent contains agglomerated particles therein, and further said particulate water absorbing agent satisfies (i) to (iii) described below: (i) centrifuge retention capacity (CRC) of the particulate water absorbing agent in a physiological saline solution being not lower than 32 g/g; (ii) mass median particle size (D50) of the particulate water absorbing agent being in the range of 200 to 400 μm; and (iii) particles of the particulate water absorbing agent smaller than 600 μm and not smaller than 150 μm being in the range of 95 to 100% by weight, wherein water content of the particulate water absorbing agent is 1 to 10% by weight.