High internal phase water-in-oil type cosmetic composition

• US 10,639,267 B2
• Filed: 09/01/2016
• Issued: 05/05/2020
• Est. Priority Date: 09/02/2015
• Status: Active Grant

• Current Assignee: Amore Pacific Corporation
• Original Assignee: Amore Pacific Corporation
• Inventors: Jeong, Choon Bok, Kang, Yu Jin, Kim, Kyung Nam, Choi, Yeong Jin
• Primary Examiner(s): Stevens, Mark V
• Application Number:
  US15/756,429
• Publication Number:
  US 20180250220A1
• Time in Patent Office: 1,342 Days
• CPC Class Codes: A61K 2800/43 Pigments; Dyes
• CPC Class Codes: A61K 2800/436 Interference pigments, e.g. Iridescent, Pearlescent
• CPC Class Codes: A61K 2800/48 Thickener, Thickening system
• CPC Class Codes: A61K 8/064 Water-in-oil emulsions, e.g. Water-in-silicone emulsions
• CPC Class Codes: A61K 8/19 containing inorganic ingredients
• CPC Class Codes: A61K 8/27 Zinc; Compounds thereof
• CPC Class Codes: A61K 8/29 Titanium; Compounds thereof
• CPC Class Codes: A61K 8/362 Polycarboxylic acids
• CPC Class Codes: A61K 8/891 saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• CPC Class Codes: A61Q 1/02 Preparations containing skin colorants, e.g. pigments preparations in powder form A61Q1/12
• CPC Class Codes: A61Q 19/007 Preparations for dry skin

Abstract

The present invention provides a high internal phase water-in-oil type cosmetic composition which shows colors by containing pearl particles or aqueous pigments in an internal phase. The present invention employs a particular kind of emulsifier forming large emulsification particles in order to allow the pearls or pigments to stably exist in an aqueous phase as an internal phase, and employs particular kinds of dispersant and preservative in order to supplement the emulsifying power for emulsion formation, prevent the separation of the formulation, and improve fluidity. In addition, in order to increase the degree of surface filling of the composition, silicone oil and ester oil are contained in an oil phase component as an external phase, and are mixed at a weight ratio in a suitable range. The cosmetic composition of the present invention provides the various aesthetic and functional effects of the pearls by stabilizing the pearls in the internal phase.

Claims

1. A high internal phase water-in-oil type cosmetic composition comprising:

each of silicone oil and ester oil in the range of 3 to 7% by weight as an oil phase component, relative to the total weight of the composition,

each of dimethicone/PEG-10/15 crosspolymer, dimethicone/polyglycerin-3 crosspolymer and cetyl PEG/PPG-10/1 dimethicone in the range of 0.1 to 3% by weight as an emulsifier, relative to the total weight of the composition,

each of polyhydroxy stearic acid and acrylate/ethylhexyl acrylate/dimethicone methacrylate copolymer in the range of 1 to 3% by weight as a dispersant, relative to the total weight of the composition,

at least one selected from the group consisting of color-exhibiting pigments and dyes in the range of 1 to 2% by weight as an aqueous phase component, relative to the total weight of the composition,

hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer in the range of 0.01 to 0.5% by weight as a thickener, relative to the total weight of the composition, and

hydrogenated polycyclopentadiene in the range of 0.1 to 5% by weight as a film former, relative to the total weight of the composition.

2. The high internal phase water-in-oil type cosmetic composition of claim 1, wherein the color-exhibiting pigments are at least one of pearl particles and aqueous phase dispersion pigments.

3. The high internal phase water-in-oil type cosmetic composition of claim 2, wherein the pearl particles are at least one platelet powders selected from the group consisting of mica, synthetic mica, alumina, borosilicate, boron nitride powder, talc, and sericite.

4. The high internal phase water-in-oil type cosmetic composition of claim 2, wherein the pearl particles are coated with at least one material selected from the group consisting of titanium dioxide, tin oxide and iron oxide.

5. The high internal phase water-in-oil type cosmetic composition of claim 2, wherein the average particle size of the pearl particles is 6 to 15 μ

m.

6. The high internal phase water-in-oil type cosmetic composition of claim 2, wherein the aqueous phase dispersion pigments are titanium dioxide coated with alumina or silica.