JP6809844B2 - Powder cosmetics - Google Patents

Description

The present invention relates to powdered cosmetics.

Solid powder cosmetics such as foundations and eye shadows are required to have a glossy and natural finish.
For example, in Patent Document 1, a solid powder cosmetic containing a plate-shaped powder, magnesium carbonate, spherical powder, and a solid oil content spreads well at the time of application and does not cause a caking phenomenon. It is described that the drop strength of the powder is excellent and a glossy and natural finish can be obtained.

Japanese Unexamined Patent Publication No. 2005-220057

The present inventor has found that powdered cosmetics containing a divalent metal carbonate and fine particle metal oxides are excellent in smoothness after application, but cannot achieve both a natural finish and a cover, and in particular, the finished skin is transparent. I found the problem that the feeling and the feeling of blurring cannot be compatible.

By using plate-shaped silica in combination with powdered cosmetics containing a divalent metal carbonate and fine particle metal oxides, the present inventor has a natural, transparent feeling and blurring while maintaining the covering power. We have found that a good finish can be obtained.

In the present invention, the following components (A), (B) and (C):
(A) Plate-shaped silica 0.01 to 10% by mass,
(B) Carbonate of divalent metal ion 0.01 to 15% by mass,
(C) Fine particle titanium oxide and / or fine particle zinc oxide with a primary particle diameter of 0.1 μm or less 0.01 to 20% by mass
Concerning powder cosmetics containing.

The powdered cosmetic of the present invention has a smooth skin after application, gives a glossy feeling to the skin, maintains excellent covering power, has a natural finish, has a transparent feeling to the skin, and blurs the skin. It has an excellent feeling and the pores are inconspicuous.

The component (A) is plate-shaped silica.
In the present invention, the silica is hydrophilic or hydrophobic silica selected from precipitated silica, shoeed silica, and a mixture thereof, and may be either porous or non-porous.
Further, the plate shape basically has a flaky shape or a scaly shape, and may be substantially a plate shape, and may be partially or totally bent or twisted.

The average particle size of the long axis of the plate-shaped silica is preferably 1 μm or more, more preferably 2 μm or more, preferably 60 μm or less, and 35 μm or less, from the viewpoint of adhering to the skin and giving a feeling of blurring to the skin finish after application. Is more preferable, and 10 μm or less is further preferable. The average particle size of the long axis of the plate-shaped silica is preferably 1 to 60 μm, more preferably 2 to 35 μm, and even more preferably 2 to 10 μm. The average thickness of the plate-shaped silica is preferably 0.005 to 1 μm.
On the other hand, the particle diameter (aspect ratio) on the major axis with respect to the average thickness of the plate-shaped silica is preferably 5 or more, and more preferably 10 or more, from the viewpoint of adhesion to the skin and giving a feeling of blurring to the finish of the skin after application. , 300 or less, more preferably 100 or less. The particle diameter (aspect ratio) on the major axis with respect to the average thickness of the plate-shaped silica is preferably 5 to 300, more preferably 10 to 100.
The particle size on the major axis of the plate-shaped silica was measured based on JIS R1629 (1997). The thickness of the plate-shaped silica is measured by observing it with a microscope.

Further, plate-like silica component (A), from the viewpoint of giving a blurred feeling finish skin after adhesion to the application to the skin, it is preferably a specific surface area 10~600m ² / g, 50~400m ² / G is more preferable, and 200 to 400 m ² / g is even more preferable. The specific surface area is a value obtained by the BET method.

As the plate-shaped silica of the component (A), one type or two or more types can be used, and the content gives a feeling of blurring to the skin adhesion and the finish of the skin after application while maintaining the covering power. From the viewpoint of making pores inconspicuous, it is 0.01% by mass or more, preferably 0.1% by mass or more, more preferably 0.3% by mass or more, still more preferably 0.5% by mass or more in the total composition. It is 10% by mass or less, preferably 7% by mass or less, more preferably 5% by mass or less, and further preferably 3% by mass or less. The content of the component (A) is 0.01 to 10% by mass, preferably 0.1 to 7% by mass, more preferably 0.3 to 5% by mass, and 0.5 to 0.5% by mass in the total composition. 3% by mass is more preferable.

Examples of the carbonate of the divalent metal of the component (B) include magnesium carbonate, calcium carbonate, barium carbonate and the like, and magnesium carbonate and calcium carbonate are preferable from the viewpoint of obtaining a natural finish with an appropriate luster. , Magnesium carbonate is more preferred.

The carbonate of the component (B) is preferably plate-shaped from the viewpoint of obtaining a natural finish with an appropriate luster.
The average particle size of the carbonate of the component (B) on the major axis is preferably 0.01 μm or more, more preferably 0.1 μm or more, and 0.5 μm or more from the viewpoint of obtaining a natural finish with an appropriate luster. More preferably, 10 μm or less is preferable, 5 μm or less is more preferable, and 3 μm or less is further preferable. The average particle size on the major axis of the component (B) is preferably 0.01 to 10 μm, more preferably 0.1 to 5 μm, and even more preferably 0.5 to 3 μm.
Further, from the viewpoint of obtaining a natural finish with an appropriate luster, the particle diameter (aspect ratio) on the major axis with respect to the average thickness of the carbonate is preferably 2 or more, more preferably 5 or more, preferably 100 or less, and 50 or less. The following is more preferable. The particle diameter (aspect ratio) on the major axis with respect to the average thickness of the carbonate is preferably 2 to 100, more preferably 5 to 50.
The particle diameter and thickness of the long axis of the carbonate are measured in the same manner as in the component (A).

As the carbonate of the component (B), one kind or two or more kinds can be used, and the content is 0 in the whole composition from the viewpoint of obtaining a natural finish with a transparent feeling and an appropriate glossy feeling. It is 0.01% by mass or more, preferably 0.1% by mass or more, more preferably 1% by mass or more, 15% by mass or less, preferably 10% by mass or less, and more preferably 8% by mass or less. The content of the component (B) is 0.01 to 15% by mass, preferably 0.1 to 10% by mass, and more preferably 1 to 8% by mass in the total composition.

In the present invention, the mass ratio (A) / (B) of the component (A) to the component (B) gives a feeling of blurring to the finish of the skin after application while maintaining transparency and covering power, and makes pores conspicuous. From the viewpoint of making it difficult, 0.01 or more is preferable, 0.02 or more is more preferable, 0.05 or more is further preferable, 5 or less is preferable, 2 or less is more preferable, and 1 or less is further preferable. The mass ratio (A) / (B) of the component (A) to the component (B) is preferably 0.01 to 5, more preferably 0.02 to 2, and even more preferably 0.05 to 1.

The fine particle titanium oxide and / or fine particle zinc oxide of the component (C) has a primary particle diameter of 0.1 μm or less, and in particular, 0.01 to 0. From the viewpoint of obtaining a transparent finish after application. The one with 09 μm is more preferable.
The average particle size of the fine particle titanium oxide and / or the fine particle zinc oxide is preferably 0.01 to 0.08 μm, more preferably 0.02 to 0.06.
Here, the primary particle size is the Feret tangential tangential diameter of the image taken by the scanning electron microscope, and the mass-based particle size distribution can be measured using an image analyzer.
Specifically, examples of the fine particle titanium oxide include TTO-51, TTO-55 (both manufactured by Ishihara Sangyo Co., Ltd.), MT-500SA, MT-600B (both manufactured by TAYCA Corporation), and the like. Examples of the fine particle zinc oxide include FINEX-25, FINEX-30, FINEX-50 (both manufactured by Sakai Chemical Industry Co., Ltd.), MZ-300, and MZ-500 (both manufactured by TAYCA Corporation).

As these fine particle titanium oxide and / or fine particle zinc oxide, those which have been hydrophobized can be used in order to enhance the dispersibility. Hydrophobizing means include fluorine compound treatment, silicone treatment, alkyl treatment, alkylsilane treatment, metal soap treatment, water-soluble polymer treatment, amino acid treatment, N-acylamino acid treatment, lecithin treatment, organic titanate treatment, and polyol treatment. Surface treatments such as acrylic resin treatment, methacrylic resin treatment, and urethane resin treatment can be mentioned.
When the fine particle titanium oxide and / or the fine particle zinc oxide is hydrophobized, the primary particle diameter and the average particle diameter mean those after the treatment.

As the fine particle titanium oxide and / or fine particle zinc oxide of the component (C), one kind or two or more kinds can be used, and the content is 0 in the whole composition from the viewpoint of the ultraviolet protection effect and the transparency after application. It is 0.01% by mass or more, preferably 0.1% by mass or more, more preferably 0.5% by mass or more, 20% by mass or less, preferably 15% by mass or less, and more preferably 10% by mass or less. The content of the component (C) is 0.01 to 20% by mass, preferably 0.1 to 15% by mass, and more preferably 0.5 to 10% by mass in the total composition.

In the present invention, the mass ratio (A) / (C) of the component (A) to the component (C) gives a feeling of blurring to the finish of the skin after application while maintaining transparency and covering power, and makes pores conspicuous. From the viewpoint of making it difficult, 0.02 or more is preferable, 0.04 or more is more preferable, 0.1 or more is further preferable, 10 or less is more preferable, 5 or less is more preferable, and 2 or less is further preferable. The mass ratio (A) / (C) of the component (A) to the component (C) is preferably 0.02 to 10, more preferably 0.04 to 5, and even more preferably 0.1 to 2.

The powdered cosmetics of the present invention can further contain talc.
The talc preferably has an average particle size of 1 to 40 μm, and more preferably 2 to 30 μm, from the viewpoint of enhancing the smoothness during application and the adhesion to the skin after application. Further, those having a particle diameter in the range of 0.5 to 70 μm are preferable, and those having a particle diameter in the range of 1 to 60 μm are more preferable.
In the present invention, the particle size is measured by an electron microscope observation and a particle size distribution measuring machine by a laser diffraction / scattering method. Specifically, in the case of the laser diffraction / scattering method, the measuring unit measures with a laser diffraction / scattering type particle size distribution measuring device (for example, HELOS & RODOS manufactured by Sympatec) with a dry dispersion pressure of 0.1 bar.
As the talc, a hydrophobized one can be used, which is preferable because it sufficiently exhibits water repellency and oil repellency and improves the feel and fluidity. The hydrophobizing treatment is not limited as long as it is a treatment applied to ordinary cosmetic powders, and includes silicone treatment, fatty acid treatment, lecithin treatment, N-acylamino acid treatment, metal soap treatment, fluorine compound treatment, and the like. Can be mentioned. These processes can be performed by a usual method.

In the present invention, one kind or two or more kinds of talc can be used, and the content is 10 mass in the total composition from the viewpoint of enhancing the smoothness during application, the smoothness after application, and the adhesion to the skin. % Or more is preferable, 30% by mass or more is more preferable, 70% by mass or more is further preferable, 95% by mass or less is more preferable, 90% by mass or less is more preferable, and 85% by mass or less is further preferable. The content of talc is preferably 10 to 95% by mass, more preferably 30 to 90% by mass, and even more preferably 70 to 85% by mass in the total composition.

The powdered cosmetic of the present invention can contain an oil component that is liquid at 25 ° C. It is an oily component that becomes fluid at 25 ° C., and as long as it has fluidity, a paste-like oily component is also included.
The oil component liquid at 25 ° C. may be any oil component used in ordinary cosmetics, for example, linear or branched hydrocarbons such as liquid paraffin, light isoparaffin, liquid isoparaffin, mineral oil, squalane, and squalane. Oils; avocado oil, macadamia nut oil, olive oil, rapeseed oil, sesame oil, wheat germ oil, flaxseed oil, cottonseed oil, soybean oil, palm oil. Vegetable oils such as coconut oil, sunflower oil, jojoba oil, sunflower oil, camellia oil, and corn oil; animal oils such as liquid lanolin; isopropyl myristate, octyldodecyl myristate, isopropyl isostearate, isononyl isononanoate, isotridecyl isononate, stearic acid Butyl, oleyl oleate, octyldodecyl ricinoleate, octyl hydroxystearate, 2-ethylhexyl paramethoxysilicate, neopentyl glycol dicaprate, diisostearyl malate, polyglyceryl diisostearate, polyglyceryl triisostearate, glyceryl diisostearate, Glyceryl triisostearate, glyceryl tri (capril capric acid), glyceryl tri2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, dl-α-tocopherol, dl-nicotinate Fatty acid esters such as α-tocopherol; silicone oils such as dimethylpolysiloxane, dimethylcyclopolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, higher alcohol-modified organopolysiloxane; fluoropolyether, perfluoroalkyl ether silicone, etc. Fluorine oil, as a cream or paste, trilanolin fatty acid glyceryl, soft lanolin fatty acid, vaseline, branched or hydroxylated fatty acid cholesteryl, dipentaerytrit fatty acid ester (dipentaerytrit hexaoxystearate, etc.), isostearic acid hardened sunflower Oil, monohydroxystearic acid-hardened castor oil, tri (capril, caprin, myristine, stearic acid) glyceride, myristyl lactate, dimer dilinoleic acid hydrogenated castor oil, dimer dilinolic acid (phytorteryl / isostearyl / cetyl / stearyl / behenyl) ), Phytosteryl oleate, and di (phytosteryl behenyl 2-octyldodecyl) N-lauroyl-L-glutamate.

One or more oil components that are liquid at 25 ° C. can be used, and the content is such that the form as a powder cosmetic is maintained, the adhesion to the skin, and the prevention of stickiness after application. From the point of view, 0.1% by mass or more is preferable, 1% by mass or more is more preferable, 3% by mass or more is further preferable, 20% by mass or less is preferable, 15% by mass or less is more preferable, and 10% by mass or less is preferable in the total composition. Is even more preferable. The content of the oil component liquid at 25 ° C. is preferably 0.1 to 20% by mass, more preferably 1 to 15% by mass, still more preferably 3 to 10% by mass in the total composition.

The powdered cosmetic of the present invention can further contain a coloring pigment other than the component (C).
The coloring pigment may be any pigment used in ordinary cosmetics, for example, titanium oxide, zinc oxide, cerium oxide, aluminum oxide, yellow iron oxide, black iron oxide, red iron oxide, dark blue, ultramarine blue, chromium oxide, and the like. Metal oxides such as chromium hydroxide, metal complexes such as manganese violet and cobalt titanate, and inorganic pigments such as carbon black; Red No. 3, Red No. 104, Red No. 106, Red No. 201, Red No. 202, Red No. 204 No., Red No. 205, Red No. 220, Red No. 226, Red No. 227, Red No. 228, Red No. 230, Red No. 401, Red No. 405, Red No. 505, Orange No. 203, Orange No. 204, Orange No. 205, Synthetic organic pigments such as Yellow No. 4, Yellow No. 5, Yellow No. 401, Blue No. 1, Blue No. 404; and natural organic pigments such as β-carotene, caramel, and paprika pigments can be mentioned.
As these coloring pigments, those which have been hydrophobized can be used. Hydrophobizing means include fluorine compound treatment, silicone treatment, alkyl treatment, alkylsilane treatment, metal soap treatment, water-soluble polymer treatment, amino acid treatment, N-acylamino acid treatment, lecithin treatment, organic titanate treatment, and polyol treatment. Surface treatments such as acrylic resin treatment, methacrylic resin treatment, and urethane resin treatment can be mentioned.

The powdered cosmetic of the present invention preferably has a spherical powder content of less than 5% by mass, more preferably less than 1% by mass, in the total composition, from the viewpoint of improving adhesion to the skin. It is more preferably less than 0.5% by mass, even more preferably less than 0.1% by mass, and even more preferably substantially free.

In addition to the above components, the powdered cosmetics of the present invention include powders other than the above, oils solid at 25 ° C, fluorine compounds, resins, surfactants, thickeners, preservatives, fragrances, ultraviolet absorbers, and moisturizers. It can contain agents, salts, solvents, antioxidants, chelating agents, neutralizing agents, pH adjusting agents, blood circulation promoters, cooling agents, antiperspirants, bactericides, skin activators and the like.

The powdered cosmetic of the present invention is a cosmetic that becomes powdery when applied to the skin, and may be in a solid form before being applied to the skin. Specific examples include make-up cosmetics such as powder foundation, face powder, white powder, blusher, and eye shadow; body powder forms such as body powder and baby powder, among which powder foundation, face powder, and white powder Is preferable. The powdered cosmetic may be produced by a conventional method, for example, the component may be in the form of powder without a molding step, or the component may be filled in a container and compression-molded.

Examples 1-8 and Comparative Examples 1-2
A solid powder cosmetic (foundation) with the composition shown in Table 1 is manufactured, and the smoothness of the skin after application, the glossiness of the skin after application, the blurring feeling of the skin after application (natural finish), and the skin after application The covering power of the skin, the inconspicuousness of the pores of the skin after application, and the transparency of the skin after application were evaluated. The results are also shown in Table 1.

(Production method)
After mixing and pulverizing all the powder components including the components (A), (B) and (C), the oil component was added and mixed, and the obtained mixture was further pulverized by a pulverizer. The pulverized product obtained here was filled in a container and molded with a filling amount of 16 g and a molding pressure of 10 kg / cm ² to obtain a solid powder cosmetic.

(Evaluation method)
When each foundation is applied to the skin by 5 specialized panelists, the smoothness of the skin after application, the glossiness of the skin after application, the blurring feeling of the skin after application (natural finish), and the skin after application The covering power, the inconspicuousness of skin pores after application, and the transparency of the skin after application were evaluated according to the following criteria. The results are shown by the integrated value of 5 people.

(1) Smoothness of the skin after application:
5; The skin is very slippery after application.
4; The skin is slippery after application.
3; The skin is slightly slippery after application.
2; The skin does not slip very well after application.
1; The skin is not slippery after application.

(2) Gloss of skin after application:
5; The glossiness of the skin after application is remarkable.
4; There is a glossy feeling on the skin after application.
3; The skin has a slight luster after application.
2; There is no gloss on the skin after application.
1; There is no glossiness of the skin after application.

(3) Blurred skin after application (natural finish):
5; There is a considerable sense of blurring in the finish.
4; There is a feeling of blurring in the finish.
3; There is a slight blurring of the finish.
2; There is no blurring of the finish.
1; There is no blurring of the finish.

(4) Skin coverage after application:
5; It covers uneven skin tone.
4; Covers uneven skin tone.
3; The uneven skin color is slightly covered.
2; The uneven skin color cannot be covered.
1; The uneven skin color cannot be covered at all.

(5) Inconspicuous skin pores after application:
5; The pores on the skin after application are inconspicuous.
4; The pores on the skin after application are not very noticeable.
3; The pores on the skin after application are slightly noticeable.
2; The pores on the skin after application are conspicuous.
1; The pores on the skin after application are quite noticeable.

(6) Transparency of the skin after application:
5; The finished skin is quite transparent.
4; The finished skin has a transparent feeling.
3; The finished skin has a slight transparency.
2; The finished skin is not transparent.
1; There is no transparency on the finished skin.

Example 9 (Foundation)
A foundation having the composition shown in Table 2 was produced in the same manner as in Examples 1 to 8.
The obtained foundation has a smooth skin after application, gives a glossy feeling to the skin, maintains excellent covering power, has a natural finish, has a transparent feeling to the skin, and gives a feeling of blurring of the skin. It is excellent and the pores are inconspicuous.

Example 10 (Foundation)
A foundation having the composition shown in Table 3 was produced in the same manner as in Examples 1 to 8.
The obtained foundation has a smooth skin after application, gives a glossy feeling to the skin, maintains excellent covering power, has a natural finish, has a transparent feeling to the skin, and gives a feeling of blurring of the skin. It is excellent and the pores are inconspicuous.

Example 11 (face powder)
A face powder having the composition shown in Table 4 was produced.
The obtained face powder has a smooth skin after application, gives a glossy feeling to the skin, maintains excellent covering power, has a natural finish, has a transparent feeling to the skin, and has a blurring feeling. It is excellent and the pores are inconspicuous.

(Production method)
All powder components including components (A), (B) and (C) were uniformly mixed using a Henschel mixer, an oil component was added thereto and further mixed, and then a face powder was obtained through a sieve. ..

Claims (4)

The following components (A), (B) and (C):
(A) Plate-shaped silica 0.01 to 10% by mass,
(B) Plate-shaped magnesium carbonate or plate-shaped calcium carbonate 0.01 to 15% by mass,
(C) Fine particle titanium oxide and / or fine particle zinc oxide with a primary particle diameter of 0.1 μm or less 0.01 to 20% by mass
Powder cosmetics containing. The powder cosmetic according to claim 1, wherein the component (B) has an average particle diameter of 0.01 to 10 μm on the major axis and a particle diameter (aspect ratio) of 2 to 100 on the major axis with respect to the average thickness. The powder cosmetic according to claim 1 or 2, wherein the mass ratio (A) / (B) of the component (A) to the component (B) is 0.01 to 5. The powder cosmetic according to any one of claims 1 to 3, wherein the mass ratio (A) / (C) of the component (A) to the component (C) is 0.02 to 10.