US 12,186,733 B2
Water-absorbing composition and production method therefor
Yuki Takada, Utsunomiya (JP); and Takuya Kouta, Utsunomiya (JP)
Assigned to KAO CORPORATION, Tokyo (JP)
Appl. No. 17/433,685
Filed by KAO CORPORATION, Tokyo (JP)
PCT Filed Feb. 13, 2020, PCT No. PCT/JP2020/005564
§ 371(c)(1), (2) Date Aug. 25, 2021,
PCT Pub. No. WO2020/175153, PCT Pub. Date Sep. 3, 2020.
Claims priority of application No. 2019-036714 (JP), filed on Feb. 28, 2019.
Prior Publication US 2022/0161231 A1, May 26, 2022
Int. Cl. B01J 20/24 (2006.01); A61L 15/28 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01)
CPC B01J 20/24 (2013.01) [A61L 15/28 (2013.01); B01J 20/28007 (2013.01); B01J 20/28026 (2013.01); B01J 20/30 (2013.01); A61L 2400/12 (2013.01); B01J 2220/44 (2013.01)] 16 Claims
 
1. An absorbent composition, comprising:
cellulose nanofibers; and
a cellulose derivative comprising a carboxy cellulose or a carboxy cellulose salt;
wherein:
the cellulose derivative has a viscosity of 6500 to 8000 mPa·s in a 1 mass % aqueous solution at 25° C.; and
the cellulose derivative has a degree of etherification of 0.7 or less; and
the absorbent composition has a ratio C1:C2 of 1:1 to 1:10, wherein:
C1 is a content by mass of the cellulose nanofibers in the absorbent composition; and
C2 is a content by mass of the cellulose derivative in the absorbent composition.