WATER-IN-OIL EMULSION COSMETIC

• US 20190321282A1
• Filed: 12/13/2017
• Published: 10/24/2019
• Est. Priority Date: 12/28/2016
• Status: Active Grant

• Current Assignee: Shiseido Company Limited
• Original Assignee: Shiseido Company Limited
• Inventors: SATO, Yukiko, IKED, Tomoko A
• Granted Patent: US 11,540,998 B2
• Time in Patent Office: Days
• CPC Class Codes: A61K 2800/10 General cosmetic use
• CPC Class Codes: A61K 2800/48 Thickener, Thickening system
• CPC Class Codes: A61K 2800/612 By organic compounds
• CPC Class Codes: A61K 2800/614 By macromolecular compounds
• CPC Class Codes: A61K 2800/651 The particulate/core comprising inorganic material
• CPC Class Codes: A61K 8/0241 Containing particulates characterized by their shape and/or structure see also A61K8/04, A61K8/11, and A61K8/14, further aspects are classified in A61K2800/40 and subcodes
• CPC Class Codes: A61K 8/062 Oil-in-water emulsions
• 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 8/29 Titanium; Compounds thereof
• CPC Class Codes: A61K 8/31 Hydrocarbons
• CPC Class Codes: A61K 8/342 Alcohols having more than seven atoms in an unbroken chain
• CPC Class Codes: A61K 8/361 Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof
• CPC Class Codes: A61K 8/37 Esters of carboxylic acids
• CPC Class Codes: A61K 8/375 the alcohol moiety containing more than one hydroxy group
• CPC Class Codes: A61K 8/44 Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
• CPC Class Codes: A61K 8/445 aromatic, i.e. the carboxylic acid directly linked to the aromatic ring
• CPC Class Codes: A61K 8/73 Polysaccharides
• CPC Class Codes: A61K 8/732 Starch; Amylose; Amylopectin; Derivatives thereof
• CPC Class Codes: A61K 8/891 saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• CPC Class Codes: A61K 8/894 : modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
• CPC Class Codes: A61Q 1/00 : Make-up preparations; Body powders; Preparations for removing make-up
• CPC Class Codes: A61Q 1/02 : Preparations containing skin colorants, e.g. pigments preparations in powder form A61Q1/12
• CPC Class Codes: A61Q 1/12 : Face or body powders for grooming, adorning or absorbing
• CPC Class Codes: A61Q 17/04 : Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
• CPC Class Codes: A61Q 19/00 : Preparations for care of the skin

Abstract

A low-viscosity water-in-oil cosmetic emulsion preparation gives a smooth use feeling, lightly spreads when applied, and has excellent dispersed-powder stability. The cosmetic emulsion preparation has (A) a polar oil which is liquid at 25° C. and has an IOB value exceeding 0.1, (B) a hydrocarbon oil, (C) a polyoxyalkylene; and alkyl-modified organopolysiloxane represented by general formula (I), and (D) a powder surface-treated with both an N-acylamino acid and methylpolysiloxane. (In formula (I), R represents a hydrogen atom or a C1-5 alkyl group, x is an integer of 5-50, y is an integer of 1-30, z is an integer of 20-200, a is an integer of 2-20, b is an integer of 1-5, c is an integer of 2-20, and d is an integer of 0-20.)

Claims

1. A water-in-oil emulsion cosmetic, comprising:

(A) a polar oil that is liquid at 25°

C. and of which an IOB value is greater than 0.1;

(B) a hydrocarbon oil;

(C) a polyoxyalkylene/alkyl co-modified organopolysiloxane represented by general formula (I) below;

2. The water-in-oil emulsion cosmetic, according to claim 1, further comprising:

a thickener.

3. The water-in-oil emulsion cosmetic, according to claim 2, wherein

said thickener is dextrin palmitate.