| 摘要 |
A subject invention provides a water-absorbent agent composition superior in both liquid permeability and liquid updrawing property, which are conventionally incompatible. Moreover, the water-absorbent agent composition according to the present invention causes less decrease in liquid updrawing property. The water-absorbent agent composition according to the present invention contains as a main component a polycarboxylic acid water-absorbent agent having a crosslinking structure which is produced by polymerizing an acid-group-containing unsaturated monomer, the water-absorbent agent composition containing water-insoluble organic or inorganic fine particles, the water-absorbent agent composition satisfying the following set of conditions (a) through (e): (a) decreasing rate of a liquid distribution velocity (LDV) is not more than 30%; (b) saline flow conductivity (SFC) is not less than 60 (Unit: 10-7 cm3 s/g); (c) mass average particle diameter (D50) is 200 to 420 m; (d) logarithm standard deviation (sigmazeta) of particle size distribution is 0.25 to 0.40; and (e) percentage of particles less than 150 mum in diameter is not more than 3 mass % with respect to the whole particle amount.
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