JP7207705B2 - solid powder cosmetics - Google Patents

Description

The present invention relates to solid powder cosmetics.

Solid powder cosmetics used for foundation and the like are composed of a powder component and an oily component, and are often stored in compact containers, so impact resistance is required in consideration of portability. On the other hand, the functions required for foundation, etc. include a soft-focus effect that adjusts the texture of the skin and blurs the unevenness of the skin, and a smooth spread that achieves a uniform finish with moderate adhesion to the skin. As a method to achieve a soft focus effect and smooth spreadability, it is common to blend spherical powders, and spherical elastic powders such as silicone elastomers and urethanes provide a soft and moist feeling when used. be able to. However, since the spherical powder has a weak cohesive force between the powders, the solid powder cosmetic in which the feeling of finishing is improved by the spherical powder tends to be inferior in impact resistance. In particular, the spherical elastic powder deteriorates the moldability of the cosmetic due to its elasticity, and is therefore a component that tends to lower the impact resistance.

In solid powder cosmetics containing spherical powder, adjustment of the oily component has been studied so far in order to improve the impact resistance. For example, solid powder cosmetics containing powdered wax as an oil component (see, for example, Patent Documents 1 and 2 below) and solid powder cosmetics containing semi-solid oils such as vaseline and dimer acid esters (for example, see below) See Patent Document 3) and the like have been proposed.

JP-A-4-18011 JP-A-2005-272427 JP 2009-209139 A

However, when it is attempted to obtain sufficient impact resistance by blending powdered wax, the properties of the cosmetic, such as smooth spreadability, tend to be impaired. On the other hand, solid powder cosmetics containing semi-solid oil or liquid oil have the problem that caking occurs during use, or they tend to crack and shatter, making it difficult to use them up to the end.

The present invention has been made in view of the above circumstances, and it is possible to achieve both a feeling of use that can blur the unevenness of the skin and obtain a uniform finish feeling, and sufficient impact resistance, and caking. To provide a solid powder cosmetic which is hardly generated and can be used up sufficiently.

As a result of intensive studies by the present inventors to solve the above-mentioned problems, the above-described problem can be achieved by blending a specific wax and a specific resin powder in specific amounts in a solid powder cosmetic containing spherical elastic powder. The present inventors have found that all of the above requirements can be satisfied, and have completed the present invention.

That is, the present invention provides a solid powder cosmetic containing a powder component and an oil component, wherein the oil component contains (A) a silicone wax having a melting point of 25 to 55° C., and the powder component comprises (B) polyethylene. It contains terephthalate powder and (C) spherical elastic powder, (A) the content of silicone wax is 0.1 to 6.0% by mass based on the total amount of the solid powder cosmetic, and (B) polyethylene terephthalate. Provided is a solid powder cosmetic having a powder content of 5.0 to 25.0% by mass based on the total amount of the solid powder cosmetic.

The solid powder cosmetic of the present invention, having the above configuration, can achieve both a feeling of use that blurs the unevenness of the skin and a uniform finish feeling, and sufficient impact resistance, and furthermore, Caking is less likely to occur, and it can be used up sufficiently.

In addition, regarding the effect of blurring the unevenness of the skin and obtaining a uniform finish, conventionally, spherical powder does not easily stay on the skin hillocks, and concentrates on the skin grooves and wrinkles. By blending the above-mentioned specific amounts of components (A) and (B), the spherical elastic powder can be localized without deteriorating the impact resistance, caking resistance, and disposable properties of the cosmetic. The present inventors presume that this is because the degeneration could be effectively suppressed.

In the solid powder cosmetic of the present invention, the content of the spherical elastic powder (C) is 2.0 to 15.0% by mass based on the total amount of the solid powder cosmetic, from the viewpoint of finish and impact resistance. Preferably.

In addition, from the viewpoint of impact resistance and single-use properties, the solid powder cosmetic of the present invention contains at least (A) a silicone wax selected from the group consisting of silicone-modified acrylic polymers, alkyl-modified silicones and aliphatic alcohol-modified silicones. It is preferred to include one.

Furthermore, from the standpoint of disposable properties, the solid powder cosmetic of the present invention contains (A) a silicone wax (acrylates/stearyl acrylate/dimethicone methacrylate) copolymer and/or (acrylates/behenyl acrylate/dimethicone methacrylate). It preferably contains a copolymer.

According to the present invention, it is possible to achieve both a feeling of use that blurs the unevenness of the skin and obtain a uniform finish feeling, and sufficient impact resistance, and moreover, it is difficult to cause caking and can be used up sufficiently. A solid powder cosmetic can be provided.

The solid powder cosmetic of the present embodiment contains a powder component and an oil component, and the oil component contains (A) a silicone wax having a melting point of 25 to 55 ° C. (hereinafter sometimes referred to as component (A)), and powder The body component includes (B) polyethylene terephthalate powder (hereinafter sometimes referred to as (B) component) and (C) spherical elastic powder (hereinafter sometimes referred to as (C) component).

<(A) Component>
Silicone waxes having a melting point of 25 to 55° C. include silicone-modified acrylic polymers, alkyl-modified silicones, and aliphatic alcohol-modified silicones. Of these, silicone-modified acrylic polymers are preferred from the viewpoint of single-use properties. From the point of view of feeling in use, silicone wax having a melting point of 25 to 40° C. is preferable.

The melting point of silicone wax is measured by the following method.
Approximately 10 mg of sample is weighed into an aluminum sample pan. An aluminum cover is attached to this pan and placed in a differential scanning calorimeter "DSC6200" (manufactured by Hitachi High-Tech Science Co., Ltd., product name). After holding the sample and reference material at −10° C. for 1 minute under a nitrogen gas flow rate of 20 mL/min, the temperature is raised from −10° C. to 100° C. at a rate of 5° C./min to obtain a melting endothermic curve. The peak temperature of this melting endothermic curve is adopted as the melting point (Tm).

Silicone-modified acrylic polymers are polysiloxane-containing acrylic polymers, such as (acrylates/stearyl acrylate/dimethicone methacrylate) copolymers, (acrylates/behenyl acrylate/dimethicone methacrylate) copolymers, and the like. Commercially available products such as KP561P (manufactured by Shin-Etsu Chemical Co., Ltd., product name, melting point 25-35° C.) and KP562P (manufactured by Shin-Etsu Chemical Co., Ltd., product name, melting point 45-55° C.) can be used.

The alkyl-modified silicone is a silicone containing an alkyl group, and the alkyl group is preferably a straight or branched chain having 12 to 50 carbon atoms, more preferably a straight or branched chain having 18 to 40 carbon atoms, Any of the side chains, one end, and both ends of the polysiloxane chain may be substituted. Examples of such alkyl-modified silicones include stearyl dimethicone, alkyl (C26-28) dimethicone, cetearyl methicone, etc. 2503 Cosmetic WAX (manufactured by Dow Corning Toray, product name, melting point 33° C.), BELSIL SDM. 5055VP (manufactured by Asahi Kasei Wacker Silicone Co., Ltd., product name, melting point 30 ° C.), BELSIL CDM 3526VP (manufactured by Asahi Kasei Wacker Silicone Co., Ltd., product name, melting point 35 ° C.), SF1632 (manufactured by Momentive Performance Materials, product name, melting point 30 ° C.) ° C.) can be used.

The aliphatic alcohol-modified silicone is a silicone containing an alkoxy group, and the alkoxy group is preferably a straight or branched chain having 12 to 50 carbon atoms, more preferably a straight or branched chain having 18 to 40 carbon atoms. Preferably, any of the side chains, one terminal, and both terminals of the polysiloxane chain may be substituted. Examples of such aliphatic alcohol-modified silicone include (stearoxymethicone/dimethicone) copolymer, stearoxydimethicone, behenoxydimethicone, etc. KF7002 (manufactured by Shin-Etsu Chemical Co., Ltd., product name, melting point 40-50) ° C.), BELSIL W3230 (manufactured by Asahi Kasei Wacker Silicone, product name, melting point 35 ° C.), ABIL Wax2434 (Evonik Japan, product name, melting point 25 ° C.), ABIL Wax2440 (Evonik Japan, product name, melting point 40 ° C.), etc. can be used.

(A) Component can be used individually by 1 type or in combination of 2 or more types.

The content of component (A) in the solid powder cosmetic of the present embodiment can be 0.1 to 6.0% by mass, based on the total amount of the solid powder cosmetic, and can be 0.5 to 5.0 mass. %, more preferably 1.0 to 4.5% by mass.

In the solid powder cosmetic of the present embodiment, as an oily component other than the component (A), as long as it is an oil that is usually used in cosmetics, solid oil and oil other than solid oil can be used without particular limitation. . An oily component can be used individually by 1 type or in combination of 2 or more types.

Solid oils include, for example, paraffin wax, microcrystalline wax, hydrocarbons such as polyethylene, plant-derived oils such as hydrogenated castor oil, hydrogenated jojoba oil, carnauba wax and rice wax, esters such as glyceryl tribehenate and cholesterol fatty acid esters. higher fatty acids such as stearic acid and behenic acid; higher alcohols such as stearyl alcohol and behenyl alcohol; alkyl-modified silicones other than component (A); silicones such as acrylic-modified silicones other than component (A); sugar fatty acid esters such as acid dextrin and inulin stearate; These can be used individually by 1 type or in combination of 2 or more types.

Paste oil and liquid oil can be used as oil agents other than solid oil. Paste oils include, for example, petrolatum, hexa(hydroxystearic acid/stearic acid/rosin acid) dipentaerythrityl, tetra(hydroxystearic acid/isostearate) dipentaerythrityl, pentaisostearate dipentaerythrityl, hexahydroxystearate dipentaerythrityl, tri(caprylic acid) /capric acid/myristate/stearate) glyceryl, hydrogenated castor oil isostearate, phytosteryl oleate, sucrose hexa(oleate/palmitate/stearate), dimer dilinoleyl bis(behenyl/isostearyl) dimer dilinoleate /phytosteryl), dimer dilinoleic acid (phytosteryl/isostearyl/cetyl/stearyl/behenyl), hydrogenated castor oil of dimer dilinoleate, macadamia nut fatty acid phytosteryl, bisdiglyceryl polyacyladipate-2, and the like.

Liquid oils include, for example, cetyl ethylhexanoate, ethylhexyl palmitate, triethylhexanoin, isotridecyl isononanoate, isostearyl isostearate, neopentyl glycol diethylhexanoate, glyceryl tri(capryl-caprate), and neopentyl glycol dicaprate. , propanediol diisostearate, trimethylolpropane triethylhexanoate, octyldodecyl myristate, octyldodecyl stearoyloxystearate, diisostearyl malate, polyglyceryl triisostearate, dipentaerythrityl pentaisostearate, trimethylolpropane triisostearate, etc. Oil; Silicone oils such as dimethicone and methylphenylpolysiloxane; Hydrocarbon oils such as liquid paraffin, squalane, olefin oligomer, liquid paraffin, squalane, and hydrogenated polyisobutene; Vegetable oils such as sunflower seed oil, jojoba seed oil, olive oil, and castor oil higher fatty acids such as isostearic acid; higher alcohols such as isostearyl alcohol, octyldodecanol and oleyl alcohol;

The content of the oil component in the solid powder cosmetic of the present embodiment can be 0.1% by mass or more based on the amount of the solid powder cosmetic, and from the viewpoint of moldability and usability, it is 1 to 20 mass. %, more preferably 5 to 15% by mass.

<(B) Component>
As the polyethylene terephthalate powder, for example, finely pulverized powder of polyethylene terephthalate obtained by finely pulverizing polyethylene terephthalate can be used.

More specifically, polyethylene terephthalate composed of crystalline and amorphous materials is brought into contact with ethylene glycol in the presence or absence of a depolymerization catalyst such as sodium hydroxide to depolymerize the amorphous portion. Porous polyethylene terephthalate is obtained by elution. A finely pulverized powder of polyethylene terephthalate obtained by finely pulverizing this porous polyethylene terephthalate to a desired particle size with a pulverizer such as a rod mill, ball mill, hammer mill, disc mill, or jet mill can be used. Further, the finely pulverized powder of polyethylene terephthalate is obtained by coarsely pulverizing crystallized polyethylene terephthalate resin to an average particle size of about 500 μm, and then finely pulverizing it to an average particle size of about 10 to 30 μm while supplying cold air. can also be obtained by

The finely pulverized powder of polyethylene terephthalate has an irregular shape and an average particle size of 1 to 30 μm, 1.5 to 20 μm, or 1.5 to 15 μm. 0.5 to 10 μm.

As the polyethylene terephthalate finely pulverized powder, commercially available products such as Snowleaf P (manufactured by Oken Co., Ltd., product name) can be used.

Plate-shaped polyethylene terephthalate powder may also be used as the component (B). The plate-like polyethylene terephthalate powder is available as a commercial product, Snowleaf PF (manufactured by Oken Co., Ltd., product name). The plate-shaped polyethylene terephthalate powder may have an average particle size of 10 to 40 μm and a thickness of 0.5 to 3 μm.

In the solid powder cosmetic of the present embodiment, it is preferable that the component (B) is finely pulverized powder of polyethylene terephthalate having an irregular shape in terms of usability and finish.

(B) component can be used individually by 1 type or in combination of 2 or more types.

The content of component (B) in the solid powder cosmetic of the present embodiment can be 5.0 to 25.0% by mass, based on the total amount of the solid powder cosmetic, and can be 10.0 to 25.0 mass. %, more preferably 10.0 to 20.0% by mass.

<(C) Component>
As the spherical elastic powder, those usually blended in cosmetics can be used, and examples thereof include spherical elastic silicone powder, elastic spherical polyurethane powder, and elastic spherical alkyl polyacrylate powder.

The silicone spherical elastic powder is a silicone spherical elastic powder such as (dimethicone/vinyl dimethicone) crosspolymer and a phenyl-modified silicone spherical elastic powder such as (diphenyl dimethicone/vinyldiphenyl dimethicone/silsesquioxane) crosspolymer. A resin-coated silicone rubber spherical elastic powder can be used. These spherical elastic silicone powders include Torayfil E505, Torayfil E506, Torayfil E701 (manufactured by Dow Corning Toray Silicone Co., Ltd., product names), KSP-100, KSP-101, KSP-102, and KSP-300. (Above, manufactured by Shin-Etsu Chemical Co., Ltd., product name) and other commercially available products can be used.

As the polyurethane spherical elastic powder, the composition of the polyurethane resin is not particularly limited, and any one can be used. (HDI/PPG/polycaprolactone) crosspolymer, which is a crosslinked condensation polymer, and (HDI/tri- methylolhexyllactone) crosspolymer and the like. Commercially available products such as CS-400, D-400 and D-800 (manufactured by Toshiki Pigment Co., Ltd., product names) can be used as the polyurethane spherical elastic powder.

Polyalkyl acrylate spherical elastic powder is Techpolymer ACX-806C (manufactured by Sekisui Plastics Co., Ltd., product name), Matsumoto Microsphere S100, Matsumoto Microsphere S101, Matsumoto Microsphere S102 (manufactured by Matsumoto Yushi Seiyaku Co., Ltd., product name) can be used.

The spherical elastic powder preferably has a hardness of 25 to 80, more preferably 30 to 50, in the spring hardness test described in JIS K6301. The average particle size of the spherical elastic powder is preferably 2-40 μm, more preferably 5-30 μm.

(C) Component can be used individually by 1 type or in combination of 2 or more types.

The content of component (C) in the solid powder cosmetic of the present embodiment can be 2.0 to 15.0% by mass or more based on the amount of the solid powder cosmetic, and from the viewpoint of finish and impact resistance Therefore, 5.0 to 10.0% by mass is preferable.

The solid powder cosmetic of the present embodiment can contain powder components other than the above component (B) and the above component (C). As the powder component, any powder that is usually used in cosmetics can be used without particular limitation, and examples thereof include bulk powder, white pigments, and color pigments. The shape of the powder is also not particularly limited, and may have a particle structure such as spherical, plate-like, or needle-like, fumes, fine particles, pigment-grade particle sizes, porous, non-porous, or the like. . A powder component can be used individually by 1 type or in combination of 2 or more types.

Specifically, mica, synthetic mica, sericite, talc, kaolin, silicon carbide, barium sulfate, bentonite, smectite, aluminum oxide, silica, magnesium oxide, zirconium oxide, magnesium carbonate, calcium carbonate, chromium oxide, aluminum hydroxide. Extender pigments such as magnesium, white pigments such as titanium oxide and zinc oxide, nylon powder, polymethyl methacrylate powder, acrylonitrile-methacrylic acid copolymer powder, vinylidene chloride-methacrylic acid copolymer, polyethylene powder, polystyrene powder, Organic powders such as organopolysiloxane elastomer powder, polymethylsilsesquioxane powder, urethane powder, wool powder, silk powder, cellulose powder, N-acyl lysine powder, fine particle titanium oxide coated mica titanium, fine particle titanium oxide coated nylon , barium sulfate-coated mica titanium, titanium oxide-containing silica, zinc oxide-containing silica, and other composite powders, and metal soaps such as magnesium stearate, zinc myristate, aluminum stearate, and calcium stearate.

Coloring pigments include inorganic coloring pigments such as red iron oxide, yellow iron oxide, black iron oxide, cobalt oxide, chromium oxide, ultramarine blue, Prussian blue, titanium oxide, and zinc oxide, Red No. 228, Red No. 226, Blue No. 404, Red Organic coloring pigments such as No. 202 and yellow No. 4 aluminum lake, titanium mica, fine titanium oxide-coated mica titanium, barium sulfate-coated mica titanium, fish scale foil, bismuth oxychloride, pearl pigments such as aluminum flakes, carmine, safflower, etc. Examples include natural dyes.

These powder components are preferably hydrophobically treated powders from the viewpoint of color development and adhesion. Hydrophobic treatments include higher fatty acids, metallic soaps, fats and oils, waxes, silicone compounds, fluorine compounds, surfactants, and dextrin fatty acid esters.

From the viewpoint of improving the uniformity of the finish, the solid powder cosmetic of the present embodiment contains, as a powder component, a bright powder having an average particle size of 1 to 15 μm, and 3 to 3 to 3, based on the total amount of the solid powder cosmetic. It is preferable to include 10% by mass. Examples of the glittering powder include titanium oxide-coated mica, iron oxide-coated mica, iron oxide-coated mica-titanium, organic pigment-coated mica-titanium, titanium oxide-coated glass powder, titanium oxide-iron oxide-coated glass powder, and aluminum powder. be done.

Further, from the viewpoint of usability and impact resistance, the content of the powder component in the solid powder cosmetic of the present embodiment is preferably 70 to 99% by mass based on the total amount of the solid powder cosmetic. It is more preferably up to 95% by mass, and even more preferably 85 to 95% by mass.

In addition to the above components, the solid powder cosmetic of the present embodiment contains components commonly used in cosmetics, such as surfactants, preservatives, antioxidants, pigments, thickeners, pH adjusters, fragrances, and ultraviolet rays. Absorbents, ultraviolet scattering agents, chelating agents, antiphlogistic agents, moisturizing agents, and the like can be contained.

The solid powder cosmetic of the present embodiment is suitable as makeup cosmetics such as foundation, face powder, face color, eye shadow, eyebrow, and cheek.

Next, a method for producing the solid powder cosmetic of the present embodiment will be described.

The method for producing a solid powder cosmetic according to the present embodiment includes the steps of preparing a cosmetic base containing a powder component and an oily component, filling a predetermined container with the cosmetic base, and compressing and molding the container. Prepare.

Examples of the powder component and the oily component include those described above, and the blending amount in the cosmetic base material can also be the same as the preferred range for the solid powder cosmetic described above. In addition, the composition of the cosmetic base material other than the powder component and the oily component can be the same as the preferred composition of the solid powder cosmetic described above.

The cosmetic base according to the present embodiment includes, for example, a step of obtaining a first mixture in which powder components are mixed, a step of obtaining a second mixture in which oil components are mixed, and a step of mixing the first mixture and the second mixing the mixture.

The step of obtaining the first mixture can be performed using, for example, a super mixer or a Henschel mixer, and pulverization may be performed using an atomizer or the like as necessary.

The step of obtaining the second mixture can be performed using, for example, a disper, a homomixer, or the like, and the oily components can be mixed while heating at 50 to 80°C, preferably 60 to 70°C.

The step of mixing the first mixture and the second mixture can be performed using, for example, a super mixer or a Henschel mixer, and pulverization may be performed using an atomizer or the like as necessary.

Examples of the predetermined container include middle plates such as metal plates and resin plates.

Through the above steps, the solid powder cosmetic according to the present embodiment is obtained.

The method for producing the solid powder cosmetic of the present embodiment includes the steps of mixing a cosmetic base material containing a powder component and an oily component with a dispersion medium to prepare a slurry, and the slurry filled in a container. may be a wet method comprising the steps of compression molding and drying.

The slurry can be prepared by adding a dispersing medium to the cosmetic base material obtained in the same manner as in the above dry method, and mixing them.

A volatile solvent can be used as the dispersion medium. Volatile solvents include light liquid isoparaffin, ethyl alcohol, acetone, isopropyl alcohol, and water.

The mixing ratio of the cosmetic base material and the dispersion medium can be set at a mass ratio of cosmetic base material:dispersion medium=100:60 to 100:10, and from the viewpoint of moldability, 100:40 to 100:20. is preferred.

Mixing of the cosmetic base material and the dispersion medium includes, for example, a method of kneading using a kneader, universal stirrer, or the like. Moreover, mixing can be performed while heating, if necessary.

In the step of compression molding and drying the slurry filled in the container, the slurry obtained above is defoamed as necessary, filled into a predetermined container, and then compression molded by suction compression molding or the like. , can be dried with a dryer as appropriate.

EXAMPLES The present invention will be described in more detail below with reference to examples, but the technical scope of the present invention is not limited by these examples. The numerical values in the table indicate the content (% by mass) based on the total amount of the cosmetic base material.

Prior to Examples, evaluation methods employed in each Example will be described.

(1) Disposable test The surface of the solid powder cosmetic was stroked with a sponge 10 times in one direction or 10 times in one direction. After that, the cosmetic attached to the applicator was wiped with a paper towel. These operations were repeated until about 80% of the bottom surface of the resin dish was visible, and the state of the solid powder cosmetic was visually observed, and a 4-grade evaluation was made according to the following evaluation criteria, and a score was assigned to each sample. .
[Evaluation criteria]
4 points: Can be used until 80% or more of the bottom surface is visible, and does not collapse after that 3 points: Can be used until about 40 to 70% of the bottom surface is visible, but then continuously collapses and cannot be used 2 points: 10 to 30% of the bottom surface is unusable It can be used until it can be seen to some extent, but after that it collapses continuously and cannot be used 1 point: It collapses before the bottom can be seen, and after that it collapses continuously and cannot be used

Judgment was made according to the following criteria from the average score at n=5.
[Judgment criteria (average score)]
◎: 3.5 or more ○: 3.0 or more to less than 3.5 △: 2.0 or more to less than 3.0 ×: less than 2.0

(2) Impact resistance (drop strength)
A sample of each solid powder cosmetic was dropped from a height of 50 cm onto a P tile 10 times with the content facing upward, and then the state was visually observed and evaluated on a 4-point scale according to the following evaluation criteria. A score was assigned to each sample.
[Evaluation criteria]
4 points: No change 3 points: Slightly lifted, chipped, and cracked, but no problem 2 points: Partially lifted, chipped, and cracked 1 point: Overall lifted, chipped, and cracked

Judgment was made according to the following criteria from the average score at n=5.
[Judgment criteria (average score)]
◎: 3.5 or more ○: 3.0 or more to less than 3.5 △: 2.0 or more to less than 3.0 ×: less than 2.0

(3) Caking test The surface of the solid powder cosmetic was stroked with a sponge 10 times in one direction or 10 times in one direction. After that, the cosmetic attached to the applicator was wiped with a paper towel. After these operations were repeated 10 times, the presence or absence of caking in the solid powder cosmetic was visually confirmed, and a 4-grade evaluation was carried out according to the following evaluation criteria, and a score was assigned to each sample.
[Evaluation criteria]
4 points: No abnormalities are observed on the surface of the solid powder cosmetic 3 points: The surface of the solid powder cosmetic solidifies slightly, but can be removed with a sponge 2 points: The surface of the solid powder cosmetic solidifies somewhat, but Can be removed with a sponge 1 point: The surface of the solid powder cosmetic solidifies and the cosmetic cannot be removed at all.

The average score at n=5 was determined according to the following criteria.
[Judgment criteria (average score)]
◎: 3.5 or more ○: 3.0 or more to less than 3.5 △: 2.0 or more to less than 3.0 ×: less than 2.0

(4) Uniformity of finish and absence of irregularities We asked 20 cosmetic evaluation specialists to use samples of solid powder cosmetics with sponges, and asked about "uniformity of finish" and "no unevenness of skin". , each of them gave a five-level evaluation according to the following evaluation criteria and gave a score to each sample.
[Evaluation criteria]
5: very good 4: good 3: normal 2: bad 1: very bad

The average score of all panel scores was taken and judged according to the following criteria.
[Judgment criteria (average score)]
◎: 4 or more ○: 3 or more to less than 4 △: 2 or more to less than 3 ×: less than 2

<Measurement of melting point>
Using DSC6200 manufactured by Hitachi High-Tech Science Co., Ltd. as a differential scanning calorimeter (DSC), the melting point was measured according to the following procedure. First, approximately 10 mg of sample was weighed and placed in an aluminum sample pan. The pan was fitted with an aluminum cover and placed in a differential scanning calorimeter. After holding the sample and reference material at −10° C. for 1 minute under a nitrogen gas flow rate of 20 mL/min, the temperature was raised from −10° C. to 100° C. at a rate of 5° C./min to obtain a melting endothermic curve. The peak temperature in the obtained melting endothermic curve was defined as the melting point (Tm).

(Examples 1 to 13 and Comparative Examples 1 to 7)
Foundations having the compositions shown in Tables 1 to 3 were prepared by the following method and evaluated as described above. The results are also shown in Tables 1-3.

<Manufacturing method>
The powder components of components 1 to 15 were uniformly dispersed with a Henschel mixer to obtain a mixture I. Components 16 to 25 were heated to 70° C. and uniformly dispersed to obtain Dispersion II. While stirring mixture I with a Henschel mixer, dispersion II was added and uniformly dispersed. This was pulverized with a pulperizer to obtain a cosmetic base material. This cosmetic base material was filled in a resin tray and compression-molded with a press to prepare a powdery solid cosmetic.

Details of each component in Tables 1 to 3 are as follows.

*1: Snowleaf P (manufactured by Oken Co., Ltd., product name, amorphous polyethylene phthalate, average particle size 7 μm)
* 2: Snowleaf PF (manufactured by Oken Co., product name, plate-like polyethylene phthalate, average particle size 20 μm)
* 3: CS-400 (manufactured by Toshiki Pigment Co., Ltd., product name, average particle size 15 μm)
* 4: KSP-300 (manufactured by Shin-Etsu Chemical Co., Ltd., product name, average particle size 5 μm)
*5: Titanium mica (average particle size 3.0 to 10.0 μm)
*6: Titanium mica (average particle size 18.0 to 25.0 μm)
* 7: KP561P (manufactured by Shin-Etsu Chemical Co., Ltd., product name, (acrylates / stearyl acrylate / dimethicone methacrylate) copolymer, melting point 25 to 35 ° C.)
*8: KP562P (manufactured by Shin-Etsu Chemical Co., Ltd., product name, (acrylates/behenyl acrylate/dimethicone methacrylate) copolymer, melting point 45-55°C)
*9: BELSIL SDM 5055VP (manufactured by Asahi Kasei Wacker Silicone Co., Ltd., product name, stearyl dimethicone, melting point 30°C)
*10: Econa SP45 (manufactured by Kao Corporation, product name, hardened coconut oil, melting point 45°C)
* 11: Plandool-G (manufactured by Nippon Fine Chemical Co., Ltd., product name)

As shown in Tables 1 to 3, the solid powder cosmetics obtained in Examples 1 to 6 and 8 to 12 were "use-up test", "impact resistance", "caking test", and "finish uniformity". and "absence of unevenness", it was evaluated as "◯" or "⊚". The solid powder cosmetic obtained in Example 7 was evaluated as "Δ" in the "use-up test", but was evaluated as "◯" or "⊚" in other evaluations. The solid powder cosmetic obtained in Example 13 was evaluated as "Δ" in "finish uniformity", but was evaluated as "◯" or "⊚" in other evaluations.

(Example 14: Oshiroi)
(Component) (Composition ratio (% by mass))
1. Talc Residue2. mica 15
3. Synthetic Phlogopite 10
4. PET powder *1 10
5. boron nitride 8
6. Fine particle titanium oxide 9
7. Inelastic spherical nylon powder 7
8. Elastic spherical urethane powder *7 2
9. Elastic spherical silicone powder *12 5
10. Titanium mica*5 3
11. Fluorine compound treated titanium oxide 2
12. Metallic soap treated iron oxide 3
13. Triethylhexanoin 4.5
14. Dimethicone 1
15. Dipentaerythrityl pentaisostearate 1.7
16. Silicone modified acrylic polymer *13 3.5
17. Preservative 0.3
18. Antioxidant 0.02

The details of each component are the same as those already described above. The details of the components *12 and *13 are as follows.
* 12: KSP-411 (manufactured by Shin-Etsu Chemical Co., Ltd., product name, average particle size 30 μm)
*13: BELSIL SDM 3526VP (manufactured by Asahi Kasei Wacker Silicone Co., Ltd., product name, stearyl dimethicone, melting point 35°C)

<Manufacturing method>
The powder components of Components 1 to 12 were uniformly dispersed using a Henschel mixer to obtain a mixture I. Components 13 to 18 were heated to 70° C. and uniformly dispersed to obtain Dispersion II. While stirring mixture I with a Henschel mixer, dispersion II was added and uniformly dispersed. This was pulverized with a pulperizer to obtain a cosmetic base material. This cosmetic base material was filled in a resin tray and compression-molded with a press to prepare a powdery solid cosmetic.

<Evaluation>
The obtained powder sample was evaluated in the same manner as above, and the results were "double-use test", "◎" for "impact resistance", "◎" for "caking test", and "uniform finish." The "goodness" was "A" and the "absence of unevenness" was "A".

(Example 15: Teak)
(Component) (Composition ratio (% by mass))
1. Talc Residue2. mica 25
2. PET powder *1 10
4. boron nitride 8
5. Inelastic spherical nylon powder 3
6. Elastic spherical urethane powder *14 2
7. Elastic spherical silicone powder *4 5
8. Titanium mica*6 5
9. Metal soap treated iron oxide 5
10. Triethylhexanoin 4.5
11. Dimethicone 2.5
12. Dipentaerythrityl pentaisostearate 1.7
13. Silicone modified acrylic polymer *8 4.5
14. Preservative 0.2
15. Antioxidant 0.02

The details of each component are the same as those already described above. The details of the components of *14 are as follows.
* 14: D-400 (manufactured by Toshiki Pigment Co., Ltd., product name, average particle size 13 μm)

<Manufacturing method>
The powder components of components 1 to 9 were uniformly dispersed with a Henschel mixer to obtain a mixture I. Components 10 to 15 were heated to 70° C. and uniformly dispersed to obtain Dispersion II. While stirring mixture I with a Henschel mixer, dispersion II was added and uniformly dispersed. This was pulverized with a pulperizer to obtain a cosmetic base material. This cosmetic base material was filled in a resin tray and compression-molded with a press to prepare a powdery solid cosmetic.

<Evaluation>
The obtained teak samples were evaluated in the same manner as above, and the results were "double-use test" with "◎", "impact resistance" with "◎", "caking test" with "○", and "uniform finish.""Goodness" was "○" and "No unevenness" was "⊚".

(Example 16: foundation)
(Component) (Composition ratio (% by mass))
1. Talc Residue2. mica 15
3. Synthetic Phlogopite 10
4. PET powder *1 10
5. boron nitride 8
6. Fine particle titanium oxide 9
7. Inelastic spherical nylon powder 7
8. Elastic spherical urethane powder *3 2
9. Elastic spherical silicone powder *15 5
10. Titanium mica*5 3
11. Fluorine compound treated titanium oxide 2
12. Metallic soap treated iron oxide 3
13. Triethylhexanoin 4.5
14. Dimethicone 1
15. Dipentaerythrityl pentaisostearate 1.7
16. Silicone modified acrylic polymer *7 3.5
17. Preservative 0.3
18. Antioxidant 0.02

As a volatile solvent, 40 parts by mass of light liquid isoparaffin was used with respect to a total of 100 parts by mass of components 1-18.

The details of each component are the same as those already described above. The details of the components of *15 are as follows.
*15: Torayfil E506S (manufactured by Dow Corning Toray Silicone Co., Ltd., product name, average particle size 4 μm)

<Manufacturing method>
The powder components of Components 1 to 12 were uniformly dispersed using a Henschel mixer to obtain a mixture I. Components 13 to 18 were heated to 70° C. and uniformly dispersed to obtain Dispersion II. While stirring mixture I with a Henschel mixer, dispersion II was added and uniformly dispersed. The above volatile solvent was added to the cosmetic base material in the above ratio, and the mixture was kneaded to form a slurry to obtain a cosmetic base material. This cosmetic base material was filled in a resin tray, compression-molded with a press, and dried to remove the solvent to prepare a powdery solid cosmetic.

<Evaluation>
When the obtained foundation samples were evaluated in the same manner as described above, the results were: "Use-up test": "◎", "Impact resistance": "◎", "Caking test": "◎", "Uniform finish The "goodness" was "○" and the "absence of unevenness" was "○".

Claims (4)

A solid powder cosmetic containing a powder component and an oily component,
The oil component contains (A) a silicone wax having a melting point of 25 to 55°C,
The powder component includes (B) polyethylene terephthalate powder and (C) spherical elastic powder,
The content of the (A) silicone wax is 0.1 to 6.0% by mass based on the total amount of the solid powder cosmetic,
A solid powder cosmetic, wherein the content of the polyethylene terephthalate powder (B) is 5.0 to 25.0% by mass based on the total amount of the solid powder cosmetic. The solid powder cosmetic according to claim 1, wherein the content of (C) the spherical elastic powder is 2.0 to 15.0% by mass based on the total amount of the solid powder cosmetic. 3. The solid powder cosmetic according to claim 1, wherein (A) the silicone wax contains at least one selected from the group consisting of silicone-modified acrylic polymers, alkyl-modified silicones and aliphatic alcohol-modified silicones. The (A) silicone wax according to any one of claims 1 to 3, comprising (acrylates/stearyl acrylate/dimethicone methacrylate) copolymer and/or (acrylates/behenyl acrylate/dimethicone methacrylate) copolymer. solid powder cosmetics.