Title:
EXTERNAL PREPARATION FOR SKIN, AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2019/021801
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing an external preparation for skin, which has an excellent sensation upon use in spite of the fact that vaseline is contained. The external preparation for skin according to the present invention contains a liquid or semi-solid oily phase that is composed of vaseline or contains vaseline and has a viscosity of 5000 mPa or more at 25°C, an aqueous phase, and closed vesicles formed from polycondensation polymer particles each having a hydroxyl group and/or an amphipathic substance capable of forming a closed vesicle, and has such an O/W-type emulsion structure that the polycondensation polymer particles and/or the closed vesicles are located at the interface between the oily phase and the aqueous phase. It is preferred that the content of the oily phase is 70 mass% or less relative to the whole amount of the external preparation for skin. It is preferred that the content of vaseline is 2 to 70% by mass inclusive relative to the whole amount of the external preparation for skin. It is preferred that the viscosity at 25°C is 400000 mPa·s or less.
Inventors:
MATSUDA NARUHITO (JP)
TAJIMA KAZUO (JP)
IMAI YOKO (JP)
MIYASAKA KANA (JP)
TAJIMA KAZUO (JP)
IMAI YOKO (JP)
MIYASAKA KANA (JP)
Application Number:
PCT/JP2018/025929
Publication Date:
January 31, 2019
Filing Date:
July 09, 2018
Export Citation:
Assignee:
UNIV KANAGAWA (JP)
MATSUDA NARUHITO (JP)
MATSUDA NARUHITO (JP)
International Classes:
A61K8/31; A61K8/73; A61K8/86; A61Q19/00
Foreign References:
| JP2016084340A | 2016-05-19 | |||
| JP2014141478A | 2014-08-07 | |||
| JP2008179577A | 2008-08-07 | |||
| JP2007186471A | 2007-07-26 | |||
| JP2006104131A | 2006-04-20 | |||
| JP2008195712A | 2008-08-28 | |||
| JP2018035082A | 2018-03-08 |
Other References:
SASAKI, NAOTA ET AL.: "Emulsibility of high viscosity oil agent by three-phase emulsification method", LECTURE ABSTRACTS OF THE ANNUAL CONFERENCE OF JAPAN OIL CHEMISTS' SOCIETY, vol. 44, 14 September 2005 (2005-09-14), pages 166
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
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