Loading patent…
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsSeiji WATAE, Chihiro HAYAKAWA
Estimating the term…
Provided is a cosmetic wherein agglomeration during dispersion of a coloring pigment is suppressed, pigment irregularity in the bulk cosmetic and a coating film of the cosmetic is suppressed, and superior coloring pigment uniformity is demonstrated. An oily mixture composition including: (a) a silicone surfactant with an HLB of 6 or less; (b) an acrylic-silicone graft copolymer; (c) an oil that is liquid at 25° C.; and (d) a coloring pigment.
An oily admixture comprising
A method for preparing a cosmetic composition comprising the steps of:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
Backward citations are indexed for grants only.
Polysiloxanes: saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
Polysiloxanes: containing silicon bound to unsaturated aliphatic groups, e.g. vinyl dimethicone
Solid or semisolid forms: sticks
Emulsions: oil-in-water emulsions
Term end not estimated
This invention relates to an oily admixture, a cosmetic composition having the oily admixture blended therein, and a method of preparing the cosmetic composition.
By virtue of their coloring effect, coloring pigments are generally blended in makeup cosmetics for the purposes of beautifying, attractiveness, and appearance change. Specifically, inorganic coloring pigments include titanium oxide of white color and iron oxides of yellow, red and black colors. Thus, the technique of combining such pigments so as to adjust the color to the human skin color and to hide or cover skin troubles so that the skin looks beautiful and attractive is generally used in makeup cosmetics such as foundations.
On the other hand, since powders such as coloring pigments are liable to agglomerate together, the step of blending a powder in cosmetics employs the technique of improving the wettability or dispersion of the powder for improving the lasting quality or storage stability of cosmetics. For example, there are known techniques of improving the stability of preparations, using polyether-modified silicone surfactants (Patent Document 1: JP-A 2014-043422) and polyglycerin-modified silicone surfactants (Patent Document 2: JP-A 2017-516591).
Now the invention is described in detail. Some compound names are described by International Nomenclature of Cosmetic Ingredients (INCI) names, hereinafter.
[Component (a)]
Component (a) used herein is a silicone surfactant having an HLB value of up to 6, which helps to disperse component (d) in component (c) in a stable manner. Component (a) is not particularly limited as long as it is a surfactant of silicone skeleton (or polysiloxane structure) having an HLB value of up to 6. The surfactant may be used alone or in a suitable combination of two or more. As used herein, the HLB is measured by Griffin's method.