JP6652241B2 - Solid powder cosmetics - Google Patents

Description

  The present invention provides a solid powder cosmetic comprising the steps of mixing a cosmetic base material prepared by mixing a powder and an oil agent with an aqueous solvent to form a slurry, filling the container, and removing the solvent. The present invention relates to a solid powder cosmetic having a good feeling of use and sufficient impact resistance by containing a specific powder and an oil agent in a method for producing a cosmetic.

  The method of manufacturing a solid powder cosmetic includes a dry molding method in which powder and an oil agent are mixed and then compacting, and a method in which a volatile solvent is added to a cosmetic base material in which the powder and the oil agent are mixed to form a slurry, which is then filled in a container. There is a wet molding method for obtaining a cosmetic by drying and removing a volatile solvent. In the wet molding method, volatile oils such as volatile silicones and low-boiling hydrocarbons have been used as solvents, but in recent years, from the viewpoint of environmental protection, it has become necessary to use aqueous solvents. However, when an aqueous solvent is used, the resulting product has problems such as insufficient powder removal and insufficient smoothness at the time of application, and poor impact resistance.

  In order to solve such a problem, a method of blending a powder having bonding moldability and a specific composite powder, a hydrocarbon oil (Patent Document 1), a hydrophobized powder and a polyhydric alcohol, a specific silicone gel composition, A method of blending a specific activator (Patent Document 2), a method of blending a hydrophobized powder with a polyhydric alcohol, a specific flexible organic resin powder, and a method of blending a specific activator (Patent Document 3). There are known a method of blending a polyhydric alcohol, a water hydrating agent, and a specific activator (Patent Document 4), and a method of blending a layered silicate mineral, a hydrophilic spherical powder, and a specific oil agent (Patent Document 5). .

Japanese Patent No. 4594075 Japanese Patent No. 5236380 Japanese Patent No. 5342195 Japanese Patent No. 5432656 JP 2014-141482 A

  However, the solid powder cosmetics obtained by the above wet molding method are not sufficient in terms of impact resistance, and solid powder cosmetics that are still satisfactory in terms of both excellent usability and impact resistance have been developed. At present, it has not been obtained.

The present inventors have conducted intensive studies in order to solve the above-mentioned problems, and as a result, by including the following components (A) to (C) in a cosmetic base material, a wet molding method using an aqueous solvent is used. It has been found that a solid powder cosmetic having excellent usability and impact resistance can be obtained, and the present invention has been completed. That is, the present invention is characterized in that a cosmetic base material containing the following components (A) to (C) and an aqueous solvent are mixed to form a slurry, which is then filled in a container, and then the solvent is removed. The present invention provides a method for producing a solid powder cosmetic to be used, and a solid powder cosmetic obtained by the production method.
(A) (fluorination / hydroxylation / oxidation) / (Mg / K / silicon)
(B) a powder having hydrophobicity and flexibility (C) a hydrated oil agent capable of hydrated water equal to or more than its own weight when hydrated at normal temperature

  The solid powder cosmetic composition of the present invention has excellent usability and impact resistance in a wet molding method using an aqueous solvent as a solvent.

Hereinafter, the present invention will be described in detail. The component (A) (fluorinated / hydroxylated / oxidized) / (Mg / K / silicon) used in the present invention is an extender, and may be any of those commonly used in cosmetics. Is not particularly limited. Commercial products of such powder include Soft Sericite T-6 and Soft Sericite SH (manufactured by Dainippon Kasei Co., Ltd.).
The component (A) used in the present invention may be used after being subjected to a surface treatment, or may be untreated, but is preferably subjected to a surface treatment with a silicone compound from the viewpoint of impact resistance.

  The content of the component (A) used in the present invention is preferably 5% by mass or more, more preferably 10% by mass or more in the cosmetic base material, from the viewpoint that a smooth and moist feeling is obtained.

The powder having hydrophobicity and flexibility of the component (B) used in the present invention is a powder determined to be hydrophobic by the following hydrophobicity test and having a compressive strength of 1.0 MPa or less. In the hydrophobicity test, 10 g of water and 0.1 g of the evaluation powder are put into a glass bottle, covered with a lid, vigorously stirred up and down, allowed to stand for one day, and observed. As a result, those in which most of the evaluation powder exists on the water surface are made hydrophobic. Further, the compressive strength, the diameter of the powder particles to measure the force required to deform 10% by microhardness tester, the following equation, compressive strength (MPa) = 27.5 × P / πd 2 (P = Load (N) required to deform the particles by 10%, d = particle diameter (mm).
As the component (B) used in the present invention, any one can be used as long as it is commonly used in cosmetics, and one or two or more types may be used in combination. For example, hydrophobic powders such as (Acrylates / ethylhexyl acrylate) crosspolymer and nylon, and urethanes that have been hydrophobicized by treating a silicone compound or a fluorine compound on a surface that is originally hydrophilic can be used. From the viewpoint of feeling of use, (acrylates / ethylhexyl acrylate) crosspolymer is preferred. Commercial products of such powders include Techpolymer ACX-806C and Techpolymer ACX-1502C (manufactured by Sekisui Plastics Co., Ltd.).

  The content of the component (B) used in the present invention is preferably 10% by mass or more, more preferably 15% by mass or more in the cosmetic base material, from the viewpoint of obtaining more excellent impact resistance. Further, from the viewpoint that a proper feeling of adhesion can be obtained at the time of coating, the content is preferably 50% by mass or less, and more preferably 30% by mass or less.

  The shape and particle size of the component (B) used in the present invention are not particularly limited, but a spherical powder having an average particle size of 2 to 10 μm is preferable. When the average particle diameter is 2 μm or more and the particles are spherical, a smoother feeling of use is obtained, and when the average particle diameter is 10 μm or less, more excellent impact resistance is obtained. In the present invention, the average particle diameter is a value of a median diameter measured by dispersing a powder in ethanol using a laser diffraction particle diameter measuring apparatus (LA-920: manufactured by Horiba Seisakusho). In addition, the spherical powder refers to a powder having a substantially spherical shape, and preferably has a ratio of the major axis / minor axis of the spherical powder of 1.2 or less.

  As the water-containing oil agent of the component (C) used in the present invention, any oil agent having a water-holding power equal to or more than its own weight can be used in the following water-holding test. Two or more kinds may be used in combination. The water retention test is performed by gradually kneading purified water into 10 g of the evaluation oil at room temperature while gradually dropping the kneaded water, and ending the point where water does not enter. For example, dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl), di dimer dilinoleic acid (isostearyl / phytosteryl), (isostearic acid / behenic acid) (glyceryl / polyglyceryl-6) esters, hexa (hydroxy) Stearic acid / stearic acid / rosin acid) dipentaerythrityl and the like, and dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl) is preferable from the viewpoint of feeling of use. Commercially available products of such oils include Planool-H (manufactured by Nippon Seika).

  The content of the component (C) used in the present invention is preferably 0.5% by mass or more, more preferably 1% by mass or more in the cosmetic base material, from the viewpoint of obtaining more excellent impact resistance. Further, from the viewpoint that a smooth feeling in use can be obtained, the content is preferably 5% by mass or less, more preferably 3% by mass or less.

  In the solid powder cosmetic of the present invention, any cosmetic base other than the above components can be used as long as it is used for ordinary cosmetics, and powders and oils other than the above can be used. .

  Examples of the powder other than the above include, for example, talc, sericite, mica, synthetic mica, silica, barium sulfate, alumina, boron nitride, titanium oxide, iron oxide, inorganic powder such as zinc oxide, silk powder, crystalline cellulose powder, and the like. Organic powders and the like can be mentioned, and one or more of these can be used. These powders may be subjected to a surface treatment with a generally known treating agent such as a fluorine compound, a silicone compound, and a surfactant.

  Other oils include liquid paraffin, squalane, microcrystalline wax, ceresin, cetyl alcohol, isostearyl alcohol, oleyl alcohol, 2-hexyldecanol, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, di-2-ethylhexane Neopentyl glycol acid, neopentyl glycol dicaprylate, neopentyl glycol dicaprate, glycerin tri-2-ethylhexanoate, glycerin triisostearate, olive oil, macadamia nut oil, sunflower oil, lanolin, lauric acid, myristic acid, palmitic acid, stearin Examples include oils such as acids, beeswax, candelilla wax, carnauba wax, linear or cyclic dimethylpolysiloxane, methylphenylpolysiloxane, and the like. That.

  Further, in addition to the above components, other components commonly used in cosmetics may be contained, for example, surfactants, fragrances, medicinal ingredients, cooling agents, ultraviolet absorbers, stabilizers, antioxidants , Preservatives, pH adjusters, viscosity adjusters, preservatives, cosmetic ingredients and the like.

The cosmetic base material of the present invention is prepared by stirring and mixing the above components using an ordinary apparatus for producing powder cosmetics. Specifically, first, an oil agent containing the component (C) is mixed and, if necessary, dissolved by heating. On the other hand, a powder containing the components (A) and (B) is uniformly mixed. It is prepared by adding an oil agent to the powder, dispersing the powder uniformly, and pulverizing the powder.
The thus-obtained cosmetic base material and an aqueous solvent are mixed to form a slurry, filled into a container, and then the solvent is removed to obtain a solid powder cosmetic.

  The aqueous solvent used for mixing with the cosmetic base material is preferably water or one or more aqueous solutions selected from low-boiling alcohols such as ethyl alcohol, propyl alcohol, isopropyl alcohol, and butyl alcohol. An ethyl alcohol aqueous solution in which alcohol is dissolved in water is more preferable.

  In the present invention, when preparing a slurry using a cosmetic base material and an aqueous solvent, from the viewpoint that the slurry has fluidity suitable for filling, 50 to 100 parts by weight of the aqueous solvent with respect to 100 parts by weight of the cosmetic base material. It is preferable to use

  In the present invention, after mixing the cosmetic base material and the aqueous solvent, filling the container, when removing the solvent by heating and drying, the heating temperature and equipment is not limited, in order to dry and distill all the solvent The temperature is preferably 50 ° C. or higher.

  The solid powder cosmetic according to the present invention can be applied as a foundation, a pressed powder, an eye color, a face color and the like. In particular, since the impact resistance is very excellent as compared with the prior art, it is suitable for a foundation in which the area of a molded product is large, and there are many opportunities to carry and use.

Next, the present invention will be described in more detail with reference to examples. The present invention is not limited by this. In addition, the numerical value in a table | surface shows content (mass%).
Examples 1 to 11 and Comparative Examples 1 to 7: Powder foundation A powder foundation was prepared according to the formulation shown in Table 1 and the following production method, and evaluated according to the following evaluation methods and criteria. Table 1 also shows these results.

(Production method)
A: The oil agent components 15 to 17 are mixed and heated to 80 ° C. to dissolve.
B: Powder components 1 to 14 are uniformly mixed.
C: A is added to B and uniformly dispersed, and after pulverization, a cosmetic base material is obtained.
D: 100 parts by mass of the cosmetic base material of C and 80 parts by mass of the aqueous solvent were uniformly mixed to prepare a slurry. As the aqueous solvent, 90 parts by mass of water and 10 parts by mass of ethanol were previously mixed and used.
E: D was filled in a metal plate (a rectangle of 54 mm × 42 mm, thickness of 5 mm), and compression-molded while vacuum suctioning.
F: The molded product was dried in a dryer at 70 ° C. for 10 hours to obtain a powder foundation.

(Evaluation method 1; feeling of use)
Five panelists specializing in cosmetics in their 20s and 40s were asked to use the powder foundations of the above examples and comparative examples. Then, an average score was calculated for each powder foundation, and determined according to the following criteria.
<Evaluation criteria>
[Usability] [Score]
Very good: 5
Good ： 4
Normal: 3
Somewhat bad: 2
Bad: 1
<Judgment criteria>
[Average score] [Judgment]
4.5 or more ◎
3.5 or more and less than 4.5 ○
2 or more and less than 3.5 △
Less than 2 ×

(Evaluation method 2: impact resistance)
Five powder foundations of each of the above Examples and Comparative Examples were horizontally dropped on a PVC plate from a height of 100 cm. This was repeated until cracks and cracks were formed, and the number of drops until cracks and cracks were formed was averaged for five sheets, and judged according to the following criteria.
<Judgment criteria>
◎: 3.0 times or more ○: 2.0 or more and less than 3.0 times Δ: 1.0 or more and less than 2.0 times ×: less than 1.0 times

  In Examples 1 to 11, both the usability and the impact resistance were good. On the other hand, Comparative Examples 1 to 3 containing no (fluorination / hydroxide / oxidation) / (Mg / K / silicon) and Comparative Example 7 containing 7% by mass of the hydrated oil had a poor feeling in use. Comparative Example 5 containing polyurethane, which is a hydrophilic elastic powder, did not have sufficient impact resistance. Further, Comparative Example 4 containing no elastic powder and Comparative Example 6 containing no hydrating oil agent were not satisfactory in feeling in use and impact resistance. From this, it became clear that it was necessary to contain (fluorinated / hydroxylated / oxidized) / (Mg / K / silicon), a powder having hydrophobicity and flexibility, and an oil hydrate.

Example 12
Presto powder formulation Ingredient Content (% by mass)
(1) Hydrogen dimethicone 3% treatment (fluorination / hydration / oxidation) / (Mg / K / silicon) * 1 55.00
(2) Residual synthetic mica (3) Yellow iron oxide 0.20
(4) Bengala 0.25
(5) Black iron oxide 0.05
(6) (Acrylates / ethylhexyl acrylate) crosspolymer * 6 20.00
(7) Preservative 0.50
(8) diethylhexyl succinate 4.00
(9) Diisostearyl malate 1.00
(10) Dimer dilinoleic acid di (isostearyl / phytosteryl) * 12 1.00
(11) Suitable amount of antioxidant (12) Suitable amount of fragrance
Total 100.00
* 12: LUSPLAN PI-DA (manufactured by Nippon Seika)
(Production method)
A: The oil components 8 to 11 are mixed and heated to dissolve. After cooling, component 12 is added.
B: Powder components 1 to 7 are uniformly mixed.
C: A is added to B and uniformly dispersed, and after pulverization, a cosmetic base material is obtained.
D: 100 parts by mass of the cosmetic base material of C and 70 parts by mass of water were uniformly mixed to prepare a slurry.
E: D was filled in a metal plate and compression molded while vacuum suctioning.
F: The molded product was dried in a dryer at 70 ° C. for 10 hours to obtain a pressed powder.

Example 13
Eye shadow formulation Ingredient Content (% by mass)
(1) Hydrogen dimethicone 3% treatment (fluorination / hydration / oxidation) / (Mg / K / silicon) * 1 20.00
(2) Sericite remaining 3% treated with dimethicone (3) Nylon-12 * 8 18.00
(4) Silica 1.00
(5) Red No. 226 0.30
(6) Gunjo 1.00
(7) Titanium mica 10.00
(8) Preservative 0.50
(9) Dimethicone 5.00
(10) Squalane 6.00
(11) Hexa (hydroxystearic acid / stearic acid / rosinic acid) dipentaerythrityl * 13 2.00
(12) Suitable amount of antioxidant (13) Suitable amount of fragrance
Total 100.00
* 13: Cosmall 168ARV (manufactured by Nisshin Oillio Group)
(Production method)
A: The oil components 9 to 12 are mixed and heated to dissolve. After cooling, component 13 is added.
B: Powder components 1 to 8 are uniformly mixed.
C: A is added to B and uniformly dispersed, and after pulverization, a cosmetic base material is obtained.
D: 100 parts by mass of the cosmetic base material of C and 70 parts by mass of water were uniformly mixed to prepare a slurry.
E: D was filled in a resin dish, and compression molded while suctioning under vacuum.
F: The molded product was dried in a dryer at 70 ° C. for 10 hours to obtain an eye shadow.

Example 14
Teak color Ingredient Content (% by mass)
(1) Hydrogen dimethicone 3% treatment (fluorination / hydration / oxidation) / (Mg / K / silicon) * 1 30.00
(2) Residual amount of talc (3) Acrylates / ethylhexyl acrylate) crosspolymer * 6 30.00
(4) Silica 1.50
(5) Red No. 226 0.30
(6) Yellow No. 5 0.35
(7) Bengala 0.80
(8) Bengala-coated mica titanium 5.00
(9) Preservative 0.20
(10) diphenylsiloxyphenyltrimethicone 10.00
(11) Trimethylolpropane triisostearate 0.50
(12) Sorbitan sesquiisostearate 0.50
(13) dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl) * 10 1.50
(14) Antioxidant appropriate amount (15) Fragrance appropriate amount
Total 100.00
(Production method)
A: Oil components 10 to 14 are mixed and heated to dissolve. After cooling, component 15 is added.
B: Powder components 1 to 9 are uniformly mixed.
C: A is added to B and uniformly dispersed, and after pulverization, a cosmetic base material is obtained.
D: 100 parts by mass of the cosmetic base material of C and 80 parts by mass of water were uniformly mixed to prepare a slurry.
E: D was filled in a resin dish, and compression molded while suctioning under vacuum.
F: The molded product was dried in a dryer at 70 ° C. for 10 hours to obtain a teak color.

  All of Examples 12 to 14 were cosmetics having good usability and impact resistance.

The solid powder cosmetic of the present invention contains (fluorinated / hydroxylated / oxidized) / (Mg / K / silicon), a powder having hydrophobicity and flexibility, and a water-retaining oil agent in a cosmetic base material. Thereby, in a wet molding method using an aqueous solvent as a solvent, excellent usability and impact resistance can be obtained.

Claims (8)

A cosmetic base material prepared by mixing a powder containing the following components (A) and (B) with an oil agent containing (C) is mixed with an aqueous solvent to form a slurry, which is filled in a container. And then removing the solvent.
(A) (fluorination / hydroxylation / oxidation) / (Mg / K / silicon)
(B) Powder having hydrophobicity and flexibility : 10% by mass or more (C) Water-containing oil agent capable of hydrating water equal to or more than its own weight : 5% by mass or less The content of the component (A) is 5% by mass or more of the total amount of the cosmetic base material, the content of the component (B) is 10 to 50% by mass of the total amount of the cosmetic base material, and the content of the component (C) is the cosmetic base. The method for producing a solid powder cosmetic according to claim 1, wherein the amount is 0.5 to 5% by mass of the total amount of the material. The method for producing a solid powder cosmetic according to claim 1 or 2, wherein component (A) (fluorination / hydroxide / oxidation) / (Mg / K / silicon) is surface-treated with a silicone compound. The method for producing a solid powder cosmetic according to any one of claims 1 to 3, wherein the powder having hydrophobicity and flexibility of the component (B) is a spherical powder having an average particle diameter of 2 to 10 µm. The method for producing a solid powder cosmetic according to any one of claims 1 to 4, wherein the powder having hydrophobicity and flexibility of the component (B) is (Acrylates / ethylhexyl acrylate) crosspolymer. The method for producing a solid powder cosmetic according to any one of claims 1 to 5, wherein the hydrated oil agent of the component (C) is dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl). The production method according to any one of claims 1 to 6, wherein the solid powder cosmetic to be produced is a foundation. A solid powder cosmetic produced by the production method according to claim 1.