WATER-IN-SILICONE OIL MACROEMULSION COSMETIC COMPOSITION

• US 20140135405A1
• Filed: 11/12/2013
• Published: 05/15/2014
• Est. Priority Date: 11/13/2012
• Status: Abandoned Application

• Current Assignee: Shin-Etsu Chemical Company Limited
• Original Assignee: Shin-Etsu Chemical Company Limited
• Inventors: LEE, Taeck-young
• Application Number:
  US14/077,774
• Publication Number:
  US 20140135405A1
• Time in Patent Office: Days
• US Class Current: 514/769
• CPC Class Codes: A61K 2800/5922 At least two compounds being classified in the same subclass of A61K8/18
• CPC Class Codes: A61K 8/064 Water-in-oil emulsions, e.g. Water-in-silicone emulsions
• CPC Class Codes: A61K 8/20 Halogens; Compounds thereof
• CPC Class Codes: A61K 8/345 containing more than one hydroxy group
• 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: A61K 8/895 containing silicon bound to unsaturated aliphatic groups, e.g. vinyl dimethicone
• CPC Class Codes: A61Q 19/00 Preparations for care of the skin

Abstract

A water-in-silicone oil macroemulsion cosmetic composition of waterdrop quick break type is provided. The silicone oil phase part contains a partly crosslinked emulsifiable silicone elastomer, a partly crosslinked non-emulsifiable silicone elastomer, and silicone oil, and the aqueous phase part contains glycerin as a freeze stabilizer and at least one member selected from polyols and lower alcohols and/or at least one member selected from organic acid salts and inorganic salts as a mixture of freeze stabilizers. The cosmetic composition instantaneously releases water upon application on the skin. The cosmetic composition is stable at the extremely low temperature of −20° C., and it retains its dispersion stability even after repeated freezing and thawing, and accordingly, and it can be used in a variety of cosmetic product.

Claims

1. A water-in-silicone oil macroemulsion cosmetic composition comprising a silicone oil phase part and an aqueous phase part, wherein

the silicone oil phase part comprises a partly crosslinked emulsifiable silicone elastomer, a partly crosslinked non-emulsifiable silicone elastomer, a non-crosslinked silicone emulsifier, and a silicone oil, and

the aqueous phase part contains glycerin as a freeze stabilizer at an amount of 3 to 15% by weight of the entire composition.

2. A water-in-silicone oil macroemulsion cosmetic composition according to claim 1 further comprising at least one member selected from polyols and lower alcohols as a freeze stabilizer in the aqueous phase part at an amount of 3 to 15% by weight of the entire composition.

3. A water-in-silicone oil macroemulsion cosmetic composition according to claim 2 wherein the polyol is 1,3-butylene glycol.

4. A water-in-silicone oil macroemulsion cosmetic composition according to claim 2 wherein the lower alcohol is at least one member selected from methanol, ethanol, isopropanol, butanol, pentanol, and combinations thereof.

5. A water-in-silicone oil macroemulsion cosmetic composition according to claim 1 further comprising at least one member selected from organic acid salts and inorganic salts as the freeze stabilizer in the aqueous phase part at an amount of 0.4 to 1.5% by weight of the entire composition.

6. A water-in-silicone oil macroemulsion cosmetic composition according to claim 5 wherein the organic acid salt is at least one member selected from the group consisting of sodium citrate, sodium formate, sodium acetate, and potassium acetate.

7. A water-in-silicone oil macroemulsion cosmetic composition according to claim 5 wherein the inorganic salt is at least one member selected from sodium chloride, potassium chloride, calcium chloride, magnesium chloride, and magnesium sulfate.