Water-absorbent resin and absorbent article

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United States of America Patent

PATENT NO 10323105
APP PUB NO 20170218096A1
SERIAL NO

15324764

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Abstract

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Provided are: a water-absorbent resin which, when used as an absorbent material, retains a high water-absorption performance, increases the diffusivity of a to-be-absorbed liquid and makes it possible to effectively decrease the amount of re-wet; and an absorbent article formed using an absorbent material including the water-absorbent resin. The water-absorbent resin according to the present invention is a water-absorbent resin obtained by polymerizing a water-soluble ethylenically monomer in the presence of an internal-crosslinking agent and thereafter post-crosslinking the polymer with a post-crosslinking agent, characterized in that when subjected to a liquid flow test, the water-absorbent resin has an effective absorbent material index (K) indicated by equation (I) of 250 or greater.

description='In-line Formulae' end='lead'Effective absorbent material index (K)=[(the amount of liquid flow) (g)]×[(artificial-urine absorption ratio) (g/g)]  (I)description='In-line Formulae' end='tail'

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Patent Owner(s)

  • SUMITOMO SEIKA CHEMICALS CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hama, Maoki Himeji, JP 7 4
Hinayama, Tetsuhiro Himeji, JP 15 52
Yabuguchi, Hiroki Himeji, JP 14 20
Yokoyama, Hideki Himeji, JP 42 404

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