W / o / w-type emulsion and method for producing same

By integrating polyglycerol and diglycerol with surfactants and solid oily components in the internal aqueous phase, W/O/W emulsions achieve enhanced stability and improved feel, addressing stickiness and phase issues.

WO2026029057A1PCT designated stage Publication Date: 2026-02-05SUNTORY HLDG LTD
View PDF 6 Cites 0 Cited by

Patent Information

Application Number
PCT/JP2025/026855
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-08-02
Filing Date
2025-07-29
Publication Date
2026-02-05

AI Technical Summary

Technical Problem

W/O/W emulsions containing polyglycerin suffer from reduced stability over time and increased stickiness, leading to phase separation or phase inversion, which cannot be restored.

Method used

Incorporating polyglycerol and diglycerol into the internal aqueous phase of a W/O/W emulsion, along with specific surfactants and solid oily components, to enhance stability and reduce stickiness.

Benefits of technology

The resulting emulsion maintains long-term stability with a moist feeling and minimal stickiness, suitable for cosmetic applications.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure JPOXMLDOC01-APPB-T000001
    Figure JPOXMLDOC01-APPB-T000001
  • Figure JPOXMLDOC01-APPB-T000002
    Figure JPOXMLDOC01-APPB-T000002
  • Figure JPOXMLDOC01-APPB-T000003
    Figure JPOXMLDOC01-APPB-T000003
Patent Text Reader

Abstract

The present invention provides: a W / O / W-type emulsion that contains polyglycerin, has good temporal stability, and has an excellent in-use feel; and a method for producing the same. The present invention pertains to a W / O / W-type emulsion comprising an inner aqueous phase, an oil phase, and an outer aqueous phase, the W / O / W-type emulsion containing polyglycerin and diglycerin in the inner aqueous phase.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • W / O / W type complex emulsion

    JP2003105191A

  • Emulsion composition

    JP2004083585A

  • Polyester, and cosmetic using the same

    JP2014009259A

  • Cleansing agent

    JP2021031402A

  • W / o / w emulsion composition

    WO2009005032A1