Title:
WATER-ABSORBENT RESIN PARTICLES AND PRODUCTION METHOD THEREOF, ABSORBENT BODY, AND ABSORBENT ARTICLE
Document Type and Number:
WIPO Patent Application WO/2020/218162
Kind Code:
A1
Abstract:
These water-absorbent resin particles 10a have a gel repulsive force disappearance distance of 3.5-6.0 mm which is measured in the order of (1)-(4) below. (1) Gel that has swollen to 30 times the size of said water-absorbent resin particles is prepared in a recessed part of a container having the recessed part opened toward an upper side in the vertical direction. (2) The flat surface of a jig having the flat surface is brought into contact with the surface of the gel from the upper side in the vertical direction. (3) The operation to vertically push the jig against the gel by 6.0 mm and pull the jig back from the gel by 6.0 mm is repeated three times, and in each of the three times pull-back operations in the repeated operations, a moving distance in which the load applied to the jig disappears is obtained. (4) The average value of the total three moving distances obtained in step (3) is obtained as a gel repulsive force disappearance distance.
Inventors:
KAWAHARA TORU (JP)
Application Number:
PCT/JP2020/016750
Publication Date:
October 29, 2020
Filing Date:
April 16, 2020
Export Citation:
Assignee:
SUMITOMO SEIKA CHEMICALS (JP)
International Classes:
C08J3/16; A61F13/53; A61L15/20; A61L15/60
Domestic Patent References:
| WO2016182082A1 | 2016-11-17 | |||
| WO2017169246A1 | 2017-10-05 | |||
| WO2012033025A1 | 2012-03-15 |
Foreign References:
| JP2003088552A | 2003-03-25 | |||
| JP2007177153A | 2007-07-12 | |||
| JP2001158802A | 2001-06-12 | |||
| JP2005132957A | 2005-05-26 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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