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JP-7857095-B2 - liquid composition

JP7857095B2JP 7857095 B2JP7857095 B2JP 7857095B2JP-7857095-B2

Inventors

  • 牧野 佑亮
  • 石川 恭義

Assignees

  • 株式会社 資生堂

Dates

Publication Date
20260512
Application Date
20211214

Claims (9)

  1. (A) Powder, (B) Non-polar silicone oil, (C) Silicone-based surfactants, A liquid composition comprising (D) a lower alcohol and (E) water, (A) The component is silica, (B) Component is selected from the group consisting of dimethylpolysiloxane, methylphenylpolysiloxane, caprylyl methicone, diphenylsiloxyphenyl trimethicone, methylhydrogenpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane, and Based on the total mass of the aforementioned composition, (B) The content of component is 0.05 to 10% by mass. (D) The content of component is 30 to 60% by mass. A liquid composition for use in dispenser containers, bottle containers, mist containers, or roll-on containers .
  2. The composition according to claim 1, wherein the HLB of component (C) is 1.0 to 4.8.
  3. The composition according to claim 1 or 2, wherein component (C) is a polyether-modified silicone surfactant.
  4. The composition according to any one of claims 1 to 3, wherein component (D) is an alcohol having 1 to 4 carbon atoms.
  5. The composition according to any one of claims 1 to 4, wherein the content of component (C) is 0.01 to 3% by mass, based on the total mass of the composition.
  6. (F) The composition according to any one of claims 1 to 5, further comprising a nonionic surfactant.
  7. The composition according to claim 6, wherein the HLB of component (F) is 1.0 to 12.0.
  8. A composition according to any one of claims 1 to 7, wherein the viscosity is 1,000 mPa·s or less.
  9. A skincare cosmetic composition according to any one of claims 1 to 8.

Description

This invention relates to a liquid composition, such as a cosmetic, comprising powder and water, which is shaken (redispersed) before use. Liquid formulations containing powder, where the powder components settle and separate into layers upon standing, are widely used in cosmetics and other applications. Such cosmetics offer a combination of the feel provided by the liquid phase components and the smooth, dry texture provided by the powder. Such liquid compositions require good redispersibility of the powder components, as they are used after uniformly redispersing the powder components by shaking. Various studies have been conducted to improve the redispersibility of powder components in liquid compositions containing powder. For example, when using silica as the powder, combining it with materials that assist in powder dispersion has been considered to improve dispersibility. Polar oils have often been used as materials to aid in such dispersion, and while the types of oils and application methods have been investigated, simply changing from polar oil to non-polar oil has not yielded significant improvements in redispersibility. This was particularly difficult in compositions with high alcohol content. Furthermore, the use of surfactants and emulsion particles as materials to aid dispersion is also being considered. For example, Patent Document 1 discloses a cosmetic composition combining silica with a polyether-modified silicone surfactant having an HLB of 5 to 10. However, according to the inventors' research, a composition that allows for easier and more uniform redispersion is desired. Furthermore, a slower powder sedimentation rate when the dispersed material is left to stand is also desired. International Publication No. 2011/111828 Detailed description of the invention This invention aims to provide a liquid composition that exhibits excellent redispersibility and a slow powder sedimentation rate. The present invention provides the following: [1] (A) Powder, (B) Non-polar silicone oil, (C) Silicone-based surfactants, A liquid composition comprising (D) a lower alcohol and (E) water. [2] The composition according to [1], wherein component (A) is silica. [3] The composition according to [1] or [2], wherein component (B) is selected from the group consisting of dimethylpolysiloxane, methylphenylpolysiloxane, caprylyl methicone, diphenylsiloxyphenyl trimethicone, methylhydrogenpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane. [4] The composition according to any one of [1] to [3], wherein the HLB of component (C) is 1.0 to 4.8. [5] The composition according to any one of [1] to [4], wherein component (C) is a polyether-modified silicone surfactant. [6] The cosmetic composition according to any one of [1] to [5], wherein component (D) is an alcohol having 1 to 4 carbon atoms. [7] The cosmetic composition according to any one of [1] to [6], wherein the content of component (B) is 0.05 to 10% by mass, based on the total mass of the cosmetic composition. [8] The cosmetic composition according to any one of [1] to [7], wherein the content of component (C) is 0.01 to 3% by mass, based on the total mass of the cosmetic composition. [9] (E) The composition according to any one of [1] to [8], further comprising a nonionic surfactant. [10] The cosmetic composition according to [9], wherein the HLB of component (E) is 1.0 to 12.0. [11] The composition according to any one of [1] to [10], wherein the viscosity is 1,000 mPa·s or less. The liquid composition according to the present invention exhibits excellent redispersibility of powder components; the powder components are easily and uniformly redispersed simply by shaking by hand, and the dispersed powder is less likely to settle. The liquid composition according to the present invention (hereinafter sometimes simply referred to as "composition") has the property of separating into at least two layers, a powder layer and a liquid layer, when left standing. The liquid layer may further consist of one or two or more layers. If the liquid layer consists of two or more layers, each layer may be in a clearly separated layered state, or it may be in a mixed suspension state. The composition according to the present invention is (A) Powder, (B) Non-polar silicone oil, (C) Silicone-based surfactants, (D) A lower alcohol and (E) Water. The components of the two-layer cosmetic composition according to the present invention are described below. (A) Powder The powder (A) incorporated into the composition according to the present invention is not particularly limited as long as it is a powder that can be incorporated into cosmetics, etc. The shape and size of the powder in the powder cosmetic of the present invention are not particularly limited. Furthermore, it includes both surface-treated and unsurface-treated powders. Specific examples of powders include inorganic powders such as extender pigments (e.g., silica, t