公开(公告)号：US11020326B2

公开(公告)日：2021-06-01

申请号：US16617677

申请日：2018-05-25

申请人： JGC CATALYSTS AND CHEMICALS LTD.

发明人： Satoshi Watanabe ,  Naoyuki Enomoto ,  Ikuko Shimazaki ,  Kenichi Suemitsu

IPC分类号： A61K8/02 ,  A61K8/25 ,  A61Q1/12 ,  C01B33/12

摘要： The hollow particles according to the present invention has a balloon structure which includes a cavity inside a shell, and include convex portions with a size of 3 to 100 nm on the surface. The particles have a true specific gravity of 0.3 to 3.0 g/cm3, a specific surface area (m2/cm3) per unit volume calculated by a BET method of not less than 0.5 and less than 60, and an average particle diameter (d1) of 1 to 20 μm. Cosmetics containing such hollow particles have a soft texture property similar to plastic beads.