US 12,263,468 B2
Method for improving water absorption of water-absorbent resin particles under load, and method for producing water-absorbent resin particles
Moe Nishida, Himeji (JP)
Assigned to SUMITOMO SEIKA CHEMICALS CO., LTD., Hyogo (JP)
Appl. No. 17/597,325
Filed by SUMITOMO SEIKA CHEMICALS CO., LTD., Hyogo (JP)
PCT Filed Jul. 1, 2020, PCT No. PCT/JP2020/025849
§ 371(c)(1), (2) Date Jan. 3, 2022,
PCT Pub. No. WO2021/006153, PCT Pub. Date Jan. 14, 2021.
Claims priority of application No. 2019-126335 (JP), filed on Jul. 5, 2019.
Prior Publication US 2022/0314200 A1, Oct. 6, 2022
Int. Cl. B01J 20/34 (2006.01); B01J 20/26 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01)
CPC B01J 20/34 (2013.01) [B01J 20/261 (2013.01); B01J 20/267 (2013.01); B01J 20/28016 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method for improving a water absorption amount under load by water absorbent resin particles, the method comprising:
shaking a powder containing a plurality of water absorbent resin particles while applying a load to the powder, the application of the load to the powder resulting in a pressure of 1.0 to 20.0 kPa being applied to an entirety of the powder.