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AssigneeNippon Shokubai Co., Ltd.
InventorsKatsuhiro Kajikawa, Takumi Hatsuda, Masatoshi Nakamura
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An absorbent resin composition which shows high speed of absorption, excels in fluid permeability, and enjoys a high absorption capacity under load comprises primary particles of an absorbent resin and granulated particles of an absorbent resin having an average particle size smaller than the average particle size of the primary particles. An absorbent article contains the composition. The absorbent resin composition is produced by a method which comprises a step of producing granulated particles by granulating particles of absorbent resin having an average particle size in the range of 10 to 100 .mu.m and a step of mixing the resultant granulated particles of the absorbent resin with the primary particles of an absorbent resin having an average particle size in the range of 150 to 800 .mu.m. The granulated particles of an absorbent resin is produced by a method which comprises mixing the particles of absorbent resin with a granulating agent and extruding the resultant mixture through an extrusion granulating device provided with a spherical perforated plate.
An absorbent resin composition comprising primary particles of absorbent resin and granulated particles obtained by granulating an absorbent resin having an average particle size smaller than that of said primary particles by using at least one granulating agent selected from the group consisting of water, a polyhydric alcohol, an amino group-containing compound, an amide group-containing compound, and a carboxyl group-containing compound.
An absorbent resin composition comprising primary particles of absorbent resin and granulated particles of absorbent resin, said granulated particles having been obtained by granulating particles of absorbent resin having an average particle size smaller than that of said primary particles, the amount of said granulated particles being in the range of 5 to 100 parts by weight based on 100 parts by weight of said primary particles of absorbent resin.
Dependencies are inferred from the claim text.