Invention Grant
- Patent Title: Water-in-oil emulsion composition
- Patent Title (中): 油包水乳液组合物
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Application No.: US13639520Application Date: 2011-04-11
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Publication No.: US09034375B2Publication Date: 2015-05-19
- Inventor: Yuko Nagare , Kazuhiro Yamaguchi
- Applicant: Yuko Nagare , Kazuhiro Yamaguchi
- Applicant Address: JP Tokyo
- Assignee: SHISEIDO COMPANY, LTD.
- Current Assignee: SHISEIDO COMPANY, LTD.
- Current Assignee Address: JP Tokyo
- Agency: Lackenbach Siegel, LLP
- Agent Andrew F. Young, Esq.
- Priority: JP2010-092261 20100413; JP2011-086012 20110408
- International Application: PCT/JP2011/058979 WO 20110411
- International Announcement: WO2011/129290 WO 20111020
- Main IPC: A61K9/66
- IPC: A61K9/66 ; A61K8/49 ; A61K8/06 ; A61K8/27 ; A61K8/894 ; A61Q17/04

Abstract:
A water-in-oil emulsion composition which contains a low water-solubility but oil-soluble ultraviolet absorber, and which exhibits excellent ultraviolet light protection and stability. The composition contains (a) an aqueous dispersion of an oil-soluble ultraviolet absorber; (b) a polyoxyalkylene-modified polysiloxane having a molecular mass of at least 2000; and (c) at most 5 mass % of an ultraviolet scattering agent; and component (a) being contained in the internal phase. Component (a) is preferably an aqueous dispersion of a complex particle of an oil-soluble ultraviolet absorber and an organic polymer.
Public/Granted literature
- US20130022563A1 WATER-IN-OIL EMULSION COMPOSITION Public/Granted day:2013-01-24
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