公开(公告)号：US20230077466A1

公开(公告)日：2023-03-16

申请号：US17796092

申请日：2021-02-17

申请人： SHISEIDO COMPANY, LTD. ,  NOF CORPORATION

发明人： Tetsuya KANEMARU ,  Yoshihiro NISHIYAMA ,  Takuya HIRUMA ,  Yuka IWAHASHI ,  Takeshi YOSHIMURA ,  Mako IWASAKI

IPC分类号： A61K8/36 ,  A61Q19/10

摘要： The invention relates to particles of a calcium salt of a fatty acid having 12 to 22 carbon atoms, wherein the median size is 4.0 μm to 15.0 μm, the particle size digest A expressed by the following equation (1) satisfies the relation A≤2.0, and the average thickness is 350 to 800 nm. Particle size digest A=(D90−D10)/D50  equation (1) (Here, 4.0≤D50≤15.0.) D10: the 10% cumulative size (μm) of the fatty acid calcium salt particles on a volumetric basis D50: the median size (μm) of the fatty acid calcium salt particles on a volumetric basis D90: the 90% cumulative size (μm) of the fatty acid calcium salt particles on a volumetric basis