公开(公告)号：EP3981384A1

公开(公告)日：2022-04-13

申请号：EP20819567.7

申请日：2020-06-04

申请人： Kao Corporation

发明人： SHI, Jia ,  FUJII, Tomoya ,  TAKIZAWA, Hiroyuki

IPC分类号： A61K8/29 ,  A61K8/19 ,  A61K8/27 ,  A61K8/31 ,  A61K8/37 ,  A61K8/89 ,  A61Q17/00 ,  B82Y5/00

摘要： Disclosed are: a method for suppressing adhesion of air harmful substances, including applying a metal oxide (A) having an average primary particle diameter dA of 800 nm or less to skin in an amount of 0.03 mg/cm 2 or more to suppress adhesion of air pollutants to the skin, and a method for suppressing adhesion of air pollutants, including applying an external preparation to skin to suppress adhesion of air pollutants to the skin, wherein the external preparation contains the component (AI), and the component (BI), the component (BII) or the component (BIII), and the ratio by mass of the content of the component (BI), the component (BII) or the component (BIII) to the content of the component (AI) in the external preparation each falls within a specific range. Component (AI): a hydrophobized metal oxide having an average primary particle diameter d AI of 800 nm or less. Component (BI): an ester oil. Component (BII): a nonvolatile hydrocarbon oil. Component (BIII): a nonvolatile silicone oil.

公开(公告)号：EP3981382A1

公开(公告)日：2022-04-13

申请号：EP20818473.9

申请日：2020-06-04

申请人： Kao Corporation

发明人： FUJII, Tomoya ,  TAKIZAWA, Hiroyuki

IPC分类号： A61K8/19 ,  A61K8/25 ,  A61K8/27 ,  A61K8/29 ,  A61K8/81 ,  A61Q17/00 ,  B82Y5/00

摘要： Disclosed is a method for suppressing adhesion of air harmful substances, including applying an external preparation to skin to suppress adhesion of air pollutants to the skin, wherein the external preparation contains the following component (A) and component (B), and the ratio by mass of the content of the component (A) to the content of the component (B) in the external preparation [(A)/(B)] is 0.30 or more and 5.0 or less. Component (A): a metal oxide having an average primary particle diameter dA of 800 nm or less. Component (B): non-disintegrable particles having an average particle diameter D B of 1 µm or more and 10 µm or less.

公开(公告)号：EP3981381A1

公开(公告)日：2022-04-13

申请号：EP20818342.6

申请日：2020-06-04

申请人： Kao Corporation

发明人： TAKIZAWA, Hiroyuki ,  ASANO, Moeko ,  FUJII, Tomoya

IPC分类号： A61K8/19 ,  A61K8/72 ,  A61K8/81 ,  A61Q17/00

摘要： Disclosed are: a particle-containing composition that contains inorganic particles (A) and particles (B) other than the particles (A), wherein the inorganic particles (A) are at least one selected from the group consisting of easily disintegrable inorganic particles (A1) having an average particle diameter D A1 of 1 µm or more and 50 µm or less, and having a surface roughness Ra of 10 nm or more and 50 nm or less, and inorganic particles (A2) having an average particle diameter D A2 of less than 1 µm, and having an average primary particle diameter d A2 of 3 nm or more and 50 nm or less, and the particles (B) are particles having an average particle diameter D B of 1 µm or more and 50 µm or less, and coated on the surfaces thereof with a polymer (C) having a hydrogen bond-accepting bond or a hydrogen bond-accepting functional group; and a method for producing the particle-containing composition, and a method for suppressing adhesion of air harmful substances using the particle-containing composition.