公开(公告)号：US10231909B2

公开(公告)日：2019-03-19

申请号：US15317798

申请日：2015-05-28

Applicant: SHISEIDO COMPANY, LTD.

Inventor： Reiji Miyahara ,  Tetsuro Yonezawa ,  Kenji Kurokawa

IPC: A61K8/06 ,  A61K8/34 ,  A61K8/44 ,  A61K8/55 ,  A61K8/46 ,  A61Q17/04 ,  A61Q19/00

Abstract: The present invention provides an intermediate composition enabling to prepare easily and steadily an α-gel-containing O/W emulsion cosmetic that has a very small viscosity change over time and is excellent in emulsion stability, without using a cooling device that has a heavy burden on cost and the environment, and a production method thereof.An α-gel intermediate composition consisting of (A) 20 to 80 mass % of a mixture containing one or more higher alcohols having 16 or more carbon atoms and an anionic surfactant in the mole ratio of 3:2 to 5:1, and (B) 20 to 80 mass % of a mixture containing one or more water-soluble solvents having the IOB value of 1.5 to 3.5 and water in the mass ratio of 5:5 to 8:2, andwherein the composition is a liquid consisting of a bicontinuous microemulsion phase or a lamellar liquid crystal-dispersed bicontinuous microemulsion phase at 65 to 85° C. and a solid at room temperature.