| abstract |
A powdery or particulate absorbent composition suitable for disposable diapers which has a specific narrow particle size distribution and is suitable for using with a fibrous material in a high concentration amount, comprising a mixture of: n a water absorbing resin particles (A) comprising an acrylic acid salt and/or acrylic acid as a main monomer of the resulting polymer, said water absorbing resin particles having a structure which is crosslinked with a first crosslinking agent (a) having at least two double bonds capable of copolymerizing with the monomer and a second crosslinking agent (b) having at least two functional groups capable of covalently binding to a carboxylic group; and n a specific hydrophilic silicon dioxide powder (B) having a water affinity of at least 70 %. n By using the absorbent composition of the present invention, a disposable diaper having good dry feeling and no leakage even after use for a long time can be obtained. Particularly, it is useful for a thin-type disposable diaper wherein a ratio of the absorbent to the fibrous material is large. |