Water-In-Oil Emulsion Composition

• US 20120016024A1
• Filed: 03/18/2010
• Published: 01/19/2012
• Est. Priority Date: 03/27/2009
• Status: Abandoned Application

• Current Assignee: Shiseido Company Limited
• Original Assignee: Shiseido Company Limited
• Inventors: Watanabe, Kei, Omura, Takayuki, Ibe, Ayako
• Application Number:
  US13/256,997
• Publication Number:
  US 20120016024A1
• Time in Patent Office: Days
• US Class Current: 514/549
• CPC Class Codes: A61K 8/06 Emulsions
• CPC Class Codes: A61K 8/064 Water-in-oil emulsions, e.g. Water-in-silicone emulsions
• CPC Class Codes: A61K 8/31 Hydrocarbons
• CPC Class Codes: A61K 8/375 the alcohol moiety containing more than one hydroxy group
• CPC Class Codes: A61Q 1/00 Make-up preparations; Body powders; Preparations for removing make-up
• CPC Class Codes: A61Q 19/00 Preparations for care of the skin

Abstract

The present invention provides a water-in-oil emulsion composition that provides a post-application elastic feeling, softness, and a moisturizing effect and that is excellent in emulsion stability while it is a composition with a high internal-aqueous-phase proportion, which allows the makeup to stay on nicely because of its uniform applicability and provides a refreshing effect on the skin when used as a pre-makeup emulsion. The water-in-oil emulsion composition of the present invention is characterized by comprising the below-described components (A) (B) and (C), and satisfying the below-described conditions (1) and (2). Components: (A) glycerol isostearate and/or glycerol oleate, (B) an aqueous component, (C) an oil component containing an isoparaffin having 20 carbon atoms or less. Conditions: (1) The internal-aqueous-phase proportion, which is obtained by dividing the mass of the aqueous component (B) by the sum of the mass of the aqueous component (B) and the mass of the oil component (C), is 68% or higher, (2) The amount of glycerol monoisostearate and/or glycerol monooleate contained in component (A) is 85 mass % or higher with respect to the total amount of (A).

Claims

1-16. -16. (canceled)

17. A water-in-oil emulsion composition comprising components (A), (B), and (C):

(A) 0.1 to 3.0 mass % of glycerol isostearate and/or glycerol oleate;

(B) an aqueous component; and

(C) an oil component containing an isoparaffin having 20 carbon atoms or less;

wherein;

(1) an internal-aqueous-phase proportion, which is obtained by dividing a mass of the aqueous component (B) by a sum of the mass of the aqueous component (B) and a mass of the oil component (C), is 68% or higher;

(2) an amount of glycerol monoisostearate and/or glycerol monooleate contained in component (A) is 85 mass % or higher with respect to a total amount of (A);

(3) an amount of the isoparaffin having 20 carbon atoms or less contained in component (C) is 30 mass % or higher with respect to a total amount of hydrocarbon oil; and

(4) a viscosity is 2000 to 15000 mPa·

s.

18. The water-in-oil emulsion composition according to claim 17, wherein a phase equilibrium state obtained by mixing the component (B) and the component (A) is a multi-phase state, in which bicontinuous cubic liquid crystals, reverse hexagonal liquid crystals, and a water phase are coexistent, or bicontinuous cubic liquid crystals, reverse hexagonal liquid crystals, other phases, and a water phase are coexistent.

19. The water-in-oil emulsion composition according to claim 17, further comprising:

(D) tetramethyl trihydroxy hexadecane.

20. The water-in-oil emulsion composition according to claim 17, further comprising a solid oil component as component (C).

21. The water-in-oil emulsion composition according to claim 18, further comprising:

(D) tetramethyl trihydroxy hexadecane.

22. The water-in-oil emulsion composition according to claim 18, further comprising a solid oil component as component (C).

23. The water-in-oil emulsion composition according to claim 19, further comprising a solid oil component as component (C).

24. The water-in-oil emulsion composition according to claim 21, further comprising a solid oil component as component (C).