US 11,806,421 B2
Porous-cellulose particles and production method thereof, and cosmetic
Satoshi Watanabe, Kitakyushu (JP); Naoyuki Enomoto, Kitakyushu (JP); and Ikuko Shimazaki, Kitakyushu (JP)
Assigned to JGC CATALYSTS AND CHEMICALS LTD., Kanagawa (JP)
Appl. No. 17/255,284
Filed by JGC CATALYSTS AND CHEMICALS LTD., Kanagawa (JP)
PCT Filed Jun. 28, 2019, PCT No. PCT/JP2019/025758
§ 371(c)(1), (2) Date Dec. 22, 2020,
PCT Pub. No. WO2020/004604, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 2018-124651 (JP), filed on Jun. 29, 2018.
Prior Publication US 2021/0259942 A1, Aug. 26, 2021
Int. Cl. A61K 8/73 (2006.01); A61K 8/06 (2006.01); B82Y 5/00 (2011.01); B82Y 40/00 (2011.01)
CPC A61K 8/731 (2013.01) [A61K 8/06 (2013.01); A61K 2800/10 (2013.01); A61K 2800/21 (2013.01); B82Y 5/00 (2013.01); B82Y 40/00 (2013.01)] 10 Claims
OG exemplary drawing
 
1. Porous-cellulose particles, each porous-cellulose particle comprising crystalline celluloses having a type I crystal form, wherein
the crystalline celluloses includes a glucose molecule as a constitutional unit, and
the porous-cellulose particles have an average particle diameter d1 of 0.5 μm to less than 50 μm, a specific surface area of 25 m2/g to 1000 m2/g, and a sphericity of 0.85 or more.