JP2006199644A - Powder cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a powder cosmetic having good fittability and adhesiveness to the skin, giving smooth feeling in use and having excellent impact resistance. <P>SOLUTION: The powder cosmetic is produced by compounding powder surface-treated with a cationic surfactant with spherical elastic polymer powder. The powder used as a base of the powder treated with a cationic surfactant is one or more substances selected from muscovite, phlogopite, magnesia mica, synthetic fluorine phlogopite and sericite. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a powder cosmetic containing a powder treated with a cationic surfactant. More specifically, the present invention relates to a powder cosmetic excellent in conformity to the skin, excellent in adhesion, smooth and excellent in impact resistance. Is.

Inorganic powders, resin powders, organic pigments and the like are blended in powder cosmetics such as powdery foundation, eye shadow, funny, blusher and the like. Of these pigments, extender pigments represented by talc, mica, kaolin and the like are often incorporated in powder cosmetics, and their properties greatly affect the properties of powder cosmetics. Therefore, the search for extender pigments with excellent usability, adhesion, and moldability has been actively conducted, and among them, excellent extender pigments such as boron nitride, synthetic fluorine phlogopite, and barium sulfate have been developed. It has been.
Among these, boron nitride is known to have very excellent properties, but there is a problem that it is difficult to use in large quantities due to its high price. Therefore, an extender pigment that is inexpensive and has a property that is comparable to boron nitride is desired.
Moreover, surface treatment is mentioned as a method of changing the property of extender. Examples of the surface treatment agent include metal soap treatment, silicone treatment, and treatment with a fluorine-modified compound. Among them, as a treatment for improving usability, a method of surface treatment with a cationic surfactant represented by a tetraalkylammonium salt is known (see Patent Document 1 and Patent Document 2). In this method, the surface of the pigment having a negative surface charge is treated with a cationic surfactant, and a powder having extremely improved smoothness can be obtained.

  On the other hand, it is also known to provide cosmetics with excellent usability by blending spherical powders made of elastic resins typified by silicone elastomers and urethanes. Above all, silicone elastomer is very effective as a cosmetic raw material because of its excellent usability and pore concealing effect. In order to strengthen the characteristics of the silicone elastomer, the silicone elastomer and extender pigments such as mica and talc are finely pulverized using a dry pulverizer having a high shear mechanism or using a medium stirring mill in a volatile solvent. It is known that a cosmetic having excellent makeup and feel can be obtained by blending a composite powder obtained by fine pulverization (see Patent Document 3). In addition, composite powders that greatly improve dispersibility by coating a silicone resin on the surface of a silicone elastomer have been developed (see Patent Document 4).

Japanese Examined Patent Publication No. 4-45483 JP 2001-335410 A JP 2001-114623 A Japanese Patent Laid-Open No. 7-196815

  However, when these spherical elastic resin powders are blended in powder cosmetics, the moldability is very poor due to their elasticity, and it is very difficult to obtain satisfactory impact resistance.

In view of such circumstances, the present inventors have conducted extensive studies to obtain a powder cosmetic material that has good usability such as familiarity with the skin, adhesion, and the like, and also has good impact resistance. By combining the body with a cationic surfactant-treated powder obtained by treating the surface of a specific powder with a cationic surfactant, the skin is well-fitted and adherent, smooth, and surface-treated. As compared with the case of using an extender pigment that was not used, it was found that the moldability was very excellent and the impact resistance was greatly improved.
Furthermore, the present inventors have used various volatile solvents when mixing and dispersing the extender which has been surface-treated with a cationic surfactant, the spherical elastic resin powder, the powder component such as a coloring material, and the oil component. The cosmetics obtained by the method of press molding the powder slurry obtained in this way after the known powder press molding and drying the powder slurry are compared with those obtained by the conventional dry mixing method As a result, it was found that the smoothness and fitting feeling were further improved, the characteristics of the cationic surfactant-treated powder were further utilized, and the impact resistance was further improved.

  That is, the present invention blends a cationic surfactant-treated powder whose surface has been treated with a cationic surfactant and a spherical elastic polymer powder to form a substrate for the cationic surfactant-treated powder. The powder cosmetic is characterized in that the powder is one or more selected from muscovite, phlogopite, biotite, synthetic fluorine phlogopite, and sericite. Here, the spherical elastic polymer powder is preferably an organopolysiloxane elastomer spherical powder.

  The powder cosmetic of the present invention is obtained by mixing, dispersing and pulverizing a material containing at least a cationic surfactant-treated powder, a spherical elastic polymer powder, an oil component, and a volatile solvent. The obtained slurry is filled in an intermediate dish and is subjected to suction press molding (Claim 4), or the cationic surfactant-treated powder, the spherical elastic polymer powder, and the oil content And a material obtained by mixing and / or dispersing and / or pulverizing a material containing at least a volatile solvent. The slurry is filled in an intermediate dish, the solvent is removed by evaporation and drying, and then obtained by press molding. It is preferable that it is a thing (Claim 5).

  The powder cosmetic of the present invention has a good fit to the skin, good adhesion, a smooth feeling of use, and excellent impact resistance.

Hereinafter, the present invention will be described in detail.
(Cationic surfactant-treated powder)
The cationic surfactant used in the cationic surfactant-treated powder of the present invention is a surfactant that has good skin familiarity and excellent adhesion to the skin, and is usually used in cosmetics. An activator is mentioned, and the tetraalkylammonium salt represented by the following general formula (1) is particularly preferable.

(In the formula, X is a chlorine atom or a bromine atom, and any one or more of R1 to R4 is a linear alkyl group having 10 to 22 carbon atoms, and the remainder is a straight chain having 1 to 10 carbon atoms. A chain alkyl group.)

  Of these, mono long chain alkyl type quaternary ammonium salts and di long chain alkyl type quaternary ammonium salts are particularly preferred. These include stearyl trimethyl ammonium chloride, behenyl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, distearyl dimethyl ammonium chloride, dibehenyl dimethyl ammonium chloride, dicetyl dimethyl ammonium chloride, stearyl dimethyl benzyl ammonium chloride, dilauryl dimethyl chloride. Ammonium etc. are mentioned, These can be used 1 type, or 2 or more types.

  Among these, stearyl trimethyl ammonium chloride, behenyl trimethyl ammonium chloride, distearyl dimethyl ammonium chloride, dibehenyl dimethyl ammonium chloride, dioctyl dimethyl ammonium chloride, octyl trimethyl ammonium chloride and the like are particularly preferable.

  The powder treated with the cationic surfactant used in the present invention can be applied to muscovite, phlogopite, biotite, synthetic fluorine phlogopite, sericite, etc. having exchangeable cations on the ground or cleaved surface. Examples thereof include silicates belonging to representative 2: 1 type clay minerals and calcined products of these silicates. Each of these powders is a powder having a negative surface charge.

Next, a method for surface-treating these powders with a cationic surfactant will be described. First, the powder to be surface-treated is dispersed in a solvent such as water, alcohol, a mixed solvent of water and alcohol, etc. at a concentration of 1 to 50% by mass, preferably 10 to 20% by mass at 30 to 100 ° C. On the other hand, 0.01 to 10.0% by mass, preferably 0.05 to 2.0% by mass of a cationic surfactant based on the powder is used as a solvent, for example, water, alcohol, a mixed solvent of water and alcohol, or the like. Dissolve in This surfactant solution is added to the powder dispersion at 30 to 90 ° C. with stirring. Here, the cationic surfactant is strongly chemically adsorbed on the powder surface. Next, it is washed with water at 50 to 100 ° C., filtered, and dried at 80 to 120 ° C. to obtain a cationic surfactant surface-treated powder.
By doing so, the cationic surfactant is easily and firmly adsorbed on the powder surface, so that it is not desorbed by boiling or washing with water.

  The method of surface-treating the powder with the above-mentioned cationic surfactant is not limited to the above-described method, and the powder and the cationic surfactant are dispersed directly or in a mixed solvent of water, water and alcohol, and this is pole mill, It can also be carried out by a method using a roller mill, a flow coater method in which powder is flowed and water in which a cationic surfactant is dissolved, or a mixed solvent of water and alcohol is sprayed.

  By using such a cationic surfactant-treated powder, not only can it be used as a powder cosmetic with excellent usability such as smoothness and familiarity to the skin, and excellent adhesion to the skin, but also spherical elasticity Even in a system in which polymer powder is blended, a powder cosmetic having excellent impact resistance can be obtained.

  0.1-90 mass% is preferable, and, as for the compounding quantity in the powder cosmetics of cationic surfactant processing powder, More preferably, it is 0.1-60 mass%. If it is less than 0.1% by mass, there is a problem that almost no effect is felt, and if it exceeds 90% by mass, there is a problem that the makeup lasts significantly deteriorates.

(Spherical elastic polymer powder)
Examples of the spherical elastic polymer powder used in the present invention include organopolysiloxane elastomer spherical powder and silicone resin-coated silicone elastomer powder. Of these, organopolysiloxane elastomer spherical powder is preferable. Examples of the silicone resin-coated silicone elastomer powder include KSP-100 (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.).
Next, the organopolysiloxane elastomer spherical powder will be described in detail.
Organopolysiloxane elastomer-spherical powder smoothes the skin feel of the cosmetic composition of the present invention, improves usability such as lightness, refreshment and softness, and increases the amount of silicone resin added. And is a preferred component for increasing the pore scavenging effect. The kind of the curable organopolysiloxane composition used as the raw material of the organopolysiloxane elastomer spherical powder to be blended in the present invention is not particularly limited, and silicon atom-bonded hydrogen atom-containing diorganopolysiloxane and silicon atom-bonded vinyl are not limited. Addition reaction curable organopolysiloxane composition in which an organopolysiloxane having a group is cured by an addition reaction in the presence of a platinum catalyst; a diorganopolysiloxane having a hydroxyl group at both ends of the molecular chain and a diorgano having a silicon atom-bonded hydrogen atom Condensation reaction curable organopolysiloxane composition in which polysiloxane is dehydrogenated in the presence of an organic tin compound and cured; diorganopolysiloxane having hydroxyl groups at both ends of the molecular chain and hydrolyzable organosilanes In the presence of compounds or titanates Condensation reaction-curable organopolysiloxane composition that reacts and cures (herein, examples of the condensation reaction include dehydration, dealcoholization, deoxime, deamine, deamidation, decarboxylic acid, and deketone); Organic peroxides Examples include peroxide-cured organopolysiloxane elastomer compositions that are cured by heating with a catalyst; high-energy radiation-cured organopolysiloxane compositions that are cured by irradiation with γ rays, ultraviolet rays, or electrons.

  Preferably, it is an addition reaction curable organopolysiloxane composition because it has a high curing rate and is excellent in curing uniformity. Particularly preferred as such an addition reaction curable organopolysiloxane composition is (A) an organopolysiloxane having at least two lower alkenyl groups in one molecule, and (B) at least two siloxanes in one molecule. It is an organopolysiloxane having an atomic bond hydrogen atom. Also, (C) one that cures by addition reaction in the presence of a platinum-based catalyst. Examples of other organic groups bonded to the silicon atom of the organopolysiloxane that is the main component of the curable organopolysiloxane composition described above include alkyl groups such as methyl, ethyl, propyl, butyl, and octyl groups; Substituted alkyl groups such as 2-phenylethyl group, 2-phenylpropyl group and 3,3,3-trifluoropropyl group; aryl groups such as phenyl group, tolyl group and xylyl group; epoxy group and carboxylic acid ester group And a substituted monovalent hydrocarbon group having a mercapto group or the like.

  Organopolysiloxane elastomer spherical powder is a nonionic surfactant, anionic surfactant, cationic surfactant or amphoteric surfactant obtained from the above addition reaction curable type, condensation reaction type or peroxide curable organopolysiloxane composition. Obtained by mixing with water in the presence of a surfactant such as an agent, uniformly mixing with a homomixer, colloid mill, homogenizer, propeller mixer, etc., then releasing into hot water at 50 ° C. or higher, curing and drying. Method: Method obtained by directly spraying and curing an addition reaction curing type, condensation reaction curing type or peroxide curing type organopolysiloxane composition in a hot air stream; irradiating an energy beam curing type organopolysiloxane composition under high energy irradiation Spraying and curing to obtain powder; addition reaction curing type, condensation reaction curing type, peroxide curing type or high energy The Energy curable organopolysiloxane composition which is cured under high-energy radiation, a ball mill, atomizer, kneader, obtainable by a method or the like to obtain a powder by crushing by a known pulverizer such as a roll mill.

  From the point of obtaining a uniform, small and spherical powder, addition reaction curable type, condensation reaction curable type, peroxide curable organopolysiloxane composition can be used as nonionic surfactant, anionic surfactant, cationic interface. Mix with water in the presence of a surfactant such as an activator or amphoteric surfactant, mix uniformly with a homomixer, colloid mill, homogenizer, propeller mixer, etc., then release into hot water at 50 ° C or higher. A method obtained by curing and drying is preferred.

  As the organopolysiloxane elastomer spherical powder used in the present invention, those described in JP-B-4-66446, JP-A-2-243612 and JP-B-4-17162 are used. Products marketed under the trade name Trefil E-506C or Trefil E-505C by Dow Corning Silicone Co., Ltd. are easy to use. In particular, Trefill E-506C (manufactured by Toray Dow Corning Silicone Co., Ltd .; trade name) is suitable. Moreover, the thing of the range of the average particle diameter of 0.1-15.0 micrometers of this component exhibits the effect of this invention, More preferably, the thing of 1.0-10.0 micrometers exhibits the effect which concerns on this invention more strongly. To do. Those having a thickness of 1.0 μm or less do not exhibit the effect according to the present invention, and those having a thickness exceeding 15.0 μm have a rough feeling and are unsuitable as a powder cosmetic raw material.

  0.1-40 mass% is preferable, and, as for the compounding quantity in the powder cosmetics of spherical elastic polymer powder, More preferably, it is 1-30 mass%. If it is less than 0.1% by mass, there is a problem that the effect cannot be realized. If it exceeds 40% by mass, there are problems that the moldability and impact resistance are remarkably lowered and the feeling of slipping is too strong.

(Wet molding)
In the present invention, as a method for producing a powder cosmetic, a cationic surfactant-treated powder surface-treated with a cationic surfactant, a powder component such as a spherical elastic polymer powder, and an oil component are mixed. -It is preferable to carry out in a variety of volatile solvents when dispersing, and to take the obtained powder slurry by a known filter press molding or press molding after drying the powder slurry. The resulting cosmetics have improved smoothness and fit as compared to those obtained by the conventional dry mixing method, and are characterized by spherical elastic polymer powder and cationic surfactant-treated powder. Can be better utilized.
Thus, the powder cosmetic of the present invention is a mixture and / or dispersion and / or a material containing at least the above-mentioned cationic surfactant-treated powder, spherical elastic polymer powder, oil, and volatile solvent. It is obtained by filling the slurry obtained by pulverization into an intermediate dish and suction press molding. Further, a slurry obtained by mixing and / or dispersing and / or pulverizing a material containing at least a cationic surfactant-treated powder, a spherical elastic polymer powder, an oil, and a volatile solvent is used. And after removing the solvent by evaporation and drying, it is obtained by press molding.

  As the volatile solvent used in the above method of the present invention, cyclic silicone, volatile linear silicone, light liquid isoparaffin, methylene chloride, fluorocarbon, hexane, cyclohexane, ether, toluene, xylene, acetone, benzene, terpenes, water 1,3 butanediol, ethanol, methanol, propanol, isopropanol, butanol and the like. Any of these can be used, but it has been confirmed that a part of the cationic surfactant adsorbed on the powder surface is eliminated by dispersing in ethanol. It is desirable not to use a solvent that easily desorbs.

  Examples of the wet disperser used in the present invention include a medium agitating mill using media such as zirconia beads, glass beads, and stainless beads from a normal wet disperser such as a disper mixer and a homogenizer.

(Cosmetics)
Further, according to the present invention, a material containing at least the above-described cationic surfactant-treated powder, spherical elastic polymer powder, and nonvolatile oil is mixed and / or dispersed and / or pulverized in a volatile solvent. A cosmetic obtained by blending a composite powder obtained by evaporating and drying the slurry obtained in this way is provided.

(Other)
In addition to the above essential components, the powder cosmetic of the present invention contains water, powders other than the above, oils, surfactants, lower alcohols, polyhydric alcohols, moisturizers, preservatives, polymers (filming agents) as necessary. ), Antioxidants, UV protection agents, fragrances, and other various drugs, etc. can be contained in a qualitative and quantitative range that does not impair the intended effects of the present invention.

  In the powder cosmetic of the present invention, it is not always necessary that all powder components to be blended therein are a powder surface-treated with the above-mentioned cationic surfactant or a spherical elastic polymer powder. Alternatively, it can be combined with a color material to obtain a sufficient effect.

  Here, as the untreated powder, talc, kaolin, mica, sericite (sericite), muscovite, biotite, phlogopite, synthetic mica, permiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, Inorganic powder such as calcium silicate, magnesium silicate, metal tungstate, magnesium, silica, zeolite, barium sulfate, calcined calcium sulfate, calcined gypsum, calcium phosphate, fluorapatite, hydroxyapatite, ceramic powder; polyamide resin powder, polyethylene powder , Polymethyl methacrylate powder, polystyrene powder, styrene-acrylic acid copolymer resin powder, benzoguanamine resin powder, polytetrafluoroethylene powder, organic powder such as cellulose powder; inorganic white face such as titanium dioxide and zinc oxide Inorganic red pigments such as iron oxide (Bengara) and iron titanate; Inorganic brown pigments such as γ-iron oxide; Inorganic yellow pigments such as yellow iron oxide and ocher; Black iron oxide, carbon, low-order titanium oxide Inorganic black pigments such as mango violet and cobalt violet; Inorganic green pigments such as chromium oxide, chromium hydroxide and cobalt titanate; Inorganic blue pigments such as ultramarine and bitumen; Titanium oxide coated mica Pearl pigments such as titanium oxide-coated bismuth oxychloride, titanium oxide-coated talc, colored titanium oxide-coated mica, bismuth oxychloride and fish scale foil; metal powder pigments such as aluminum powder and copper powder; and the like.

The powder cosmetic of the present invention preferably contains an oil in order to improve moist feeling and use feeling. The oil used in the present invention is liquid at 25 ° C., for example, avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, persic oil, Wheat germ oil, sasanqua oil, castor oil, flaxseed oil, safflower oil, cottonseed oil, eno oil, soybean oil, peanut oil, teaseed oil, kaya oil, rice bran oil, cinnabari oil, Japanese kiri oil, jojoba oil, germ oil Liquid oils such as glycerin, triglycerin, trioctanoic acid glycerin, glycerin triisopalmitate, hydrocarbon oils such as liquid paraffin, squalene, squalane, pristane, higher alcohol fatty acids such as oleic acid, tall oil, isostearic acid, lauryl alcohol, oleyl High-grade alcohol, isostearyl alcohol, octyldodecanol, etc. Silicone such as alcohol, dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, decamethylpolysiloxane, isopropyl myristate, hexyl laurate, oleyl oleate, decyl oleate, octyldodecyl myristate, hexyl dimethyloctanoate Examples thereof include decyl, diethyl phthalate, dibutyl phthalate and the like, and dimethylpolysiloxane is preferred.
The blending amount of the oil used in the present invention is 15% or less, preferably 10% or less. If it exceeds 15%, the characteristics (particularly smoothness) obtained by the treatment with the cationic surfactant are impaired.

  As a product form of the powder cosmetic of the present invention, any product form within the category of the powder cosmetic can be adopted as long as the above-mentioned essential requirements are satisfied. Specifically, the powder cosmetic of the present invention takes the form of a makeup base, foundation, white powder, body powder, whitening powder, emollient powder, fragrance powder, blusher, lipstick, mascara, eye shadow, eyeliner, etc. obtain.

Production Example 1 (Production Method of Powder Treated with Cationic Surfactant)
Add 1.5 parts by weight of distearyldimethylammonium chloride to 700 parts by weight of water preheated to 80 ° C. After confirming that distearyldimethylammonium chloride has dissolved, add to 100 parts by weight of powder. And stirring and mixing in a state heated to 80 ° C. Thereafter, the dispersion was filtered, and the obtained powder was again washed with 700 parts by weight of warm water (80 ° C.), and the powder cake obtained by filtering again was left in an oven at 70 ° C. for a whole day and night. Desired powder was obtained by drying and grinding.

  The powders examined this time were (Production Example 1-1) muscovite (average particle size 15 μm), (Production Example 1-2) phlogopite (average particle size 20 μm), and (Production Example 1-3) synthetic fluorine. Phlogopite (average particle size 10 μm), (production example 1-4) sericite (average particle size: 8 μm), (production example 1-5) 1000 ° C. calcined sericite (average particle size: 8 μm), (production example) 1-6) Talc (average particle size: 15 μm), (Production Example 1-7) flaky silica (average particle size: 20 μm), (Production Example 1-8) flaky titanium oxide (average particle size: 20 μm) used.

Production Example 2 (Method for producing cationic surfactant-treated powder)
A cationic surfactant-treated powder was produced in the same manner as in Production Example 1 except that dilauryldimethylammonium chloride was used instead of distearyldimethylammonium chloride.

Production Example 3 (Production Method of Powder Treated with Cationic Surfactant)
A cationic surfactant-treated powder was produced in the same manner as in Production Example 1 except that trimethylstearylammonium chloride was used instead of distearyldimethylammonium chloride.

<Usability evaluation of the cationic surfactant-treated powder obtained in Production Example 1-1 to Production Example 1-8>
10 cosmetic panels were applied to the skin with the cationic surfactant-treated powder of Preparation Example 1 and the untreated powder on the skin. Each evaluation item of “Feel familiarity”, “Skin adhesion”, and “Smoothness” was evaluated based on the following evaluation criteria, and further evaluated according to the following criteria based on the average score of each panel. Judged. The results are shown in Table 1.

Judgment criteria:
[7-level evaluation method]
I don't feel at all: 0 points I don't feel: 1 point I don't feel a little: 2 points Neither: 3 points I feel a little: 4 points I feel: 5 points I feel very much: 6 points

[Judgment]
◎: Average score of 5 or more ○: Average score of 4 or more and less than 5 △: Average score of 2.5 or more and less than 4 ×: Average score of 2.5 Less than

[Measurement method of water contact angle]
The target powder is tableted at a pressure of ² t / cm ² to obtain pellets. A predetermined amount of water droplets were dropped on the pellets, and the contact angle was calculated by imaging the state of the water droplets.

  From the results of Table 1, the sensory evaluation was highly evaluated when the water contact angle was 110 or more. Further, surface observation using AFM confirmed that a lamellar monolayer of long-chain alkylammonium was formed on the powder surface. 1 is a view showing a photograph of an AFM image of the cationic surfactant-treated powder obtained in Production Example 1. FIG. It can be concluded that this long-chain alkylammonium lamellar monolayer is a major factor that significantly improves the feel.

Test Examples 1 to 5 and Comparative Test Examples 1 to 11 (examination based on the presence or absence of cation treatment of the powder in the foundation system)
Foundations were prepared according to the formulations shown in the following Tables 2 and 3 and examined by the presence or absence of cation treatment of the powder. About the obtained foundation, it evaluated by said evaluation method about each evaluation item of "familiarity to skin", "adhesion to skin", and "smoothness". The results are also shown in Tables 2 and 3.

  From Tables 2 and 3, only the powder treated with the silicate belonging to the 2: 1 type clay mineral shown in the test example is greatly improved in all evaluation items compared with the untreated state. Recognize.

Examples 1 to 4 and Comparative Examples 1 to 4 (examination based on presence or absence of cation treatment of powder in a foundation system containing spherical elastic resin powder)
The foundation was prepared by the following method according to the formulation shown in Table 4 below, and examination was performed based on the presence or absence of cation treatment of the powder. About the obtained foundation, it evaluated with said evaluation method about each evaluation item of "skin familiarity", "feeling of adhesion to skin", and "smoothness". Further, “impact resistance” was determined by the following evaluation method. The results are also shown in Table 4. In the tables, Trefill E-506C (Toray Dow Corning Silicone Co., Ltd .; trade name) was used as the spherical silicone elastomer.

[Production method]
The powder part in the table and the oil part heated to 80 ° C. were mixed with a Henschel mixer, pulverized twice with a pulverizer, and then dry press-molded into a resin dish.

[Impact resistance evaluation]
A sample was press-molded in a resin and set in a compact container for cosmetics to obtain a sample. A sample was dropped in a horizontal state from a height of 30 cm onto an iron plate having a thickness of 20 mm, and the number of drops until it was damaged was evaluated as impact resistance.

  From Table 4, it can be seen that the foundation of the present invention is greatly improved in all the evaluation items as compared with the foundation of the comparative example using the powder not treated with the cationic surfactant.

Example 5 (5-1 to 5-6), Reference Example 5 (5-1, 5-2) (foundation production by wet dispersion process in volatile solvent)
Example 5-1
The oil phase part heated and dissolved at 80 ° C. was added to the powder part in the formulation shown in Table 5, mixed with a Henschel mixer, and pulverized with a pulverizer. To 100 parts by weight of the obtained powder / oil mixture, 50 parts by weight of light liquid isoparaffin was added and mixed with a disper mixer. The obtained slurry was injected and filled in a dish in a resin, then press molded with a filter press molding machine, and dried at 60 ° C. for 24 hours to obtain a foundation.

Example 5-2
The oil phase part heated and dissolved at 80 ° C. was added to the powder part in the formulation shown in Table 5, mixed with a Henschel mixer, and pulverized with a pulverizer. To 100 parts by weight of the obtained powder / oil mixture, 50 parts by weight of light liquid isoparaffin was added and mixed with a disper mixer. The obtained slurry was filled in a metal pan, dried at 60 ° C. for 24 hours, and then press-molded to obtain a foundation.

Example 5-3
Add oil phase part and light liquid isoparaffin (50 parts by weight with respect to (powder part + oil phase part)) heated to 80 ° C. and dissolved in the powder part in the formulation shown in Table 5, using a disper mixer. The resulting slurry was roughly mixed, and the resulting slurry was dispersed and pulverized by a sand grinder mill (media: zirconia beads 1 mmφ). The obtained slurry was injected and filled in a dish in a resin, then press molded with a filter press molding machine, and dried at 60 ° C. for 24 hours to obtain a foundation.

Example 5-4
Add oil phase part and light liquid isoparaffin (50 parts by weight with respect to (powder part + oil phase part)) heated to 80 ° C. and dissolved in the powder part in the formulation shown in Table 5, using a disper mixer. The resulting slurry was roughly mixed, and the resulting slurry was dispersed and pulverized by a sand grinder mill (media: zirconia beads 2 mmφ). The obtained slurry was filled in a metal pan, dried at 60 ° C. for 24 hours, and then press-molded to obtain a foundation.

Example 5-5
The powder part in the formulation shown in Table 5 was added to the oil phase part heated to 80 ° C. and dissolved, mixed with a Henschel mixer, and then pulverized with a pulverizer. To 100 parts by weight of the obtained powder / oil mixture, 50 parts by weight of light liquid isoparaffin was added and mixed with a disper mixer. The obtained slurry was dried under reduced pressure, and the resulting powder was pulverized with a pulverizer to obtain a composite powder. The composite powder was filled in a resin dish and press molded to obtain a foundation.

Example 5-6
Add oil phase part and light liquid isoparaffin (50 parts by weight with respect to (powder part + oil phase part)) heated to 80 ° C. and dissolved in the powder part in the formulation shown in Table 5, using a disper mixer. The resulting slurry was roughly mixed, and the resulting slurry was dispersed and pulverized by a sand grinder mill (media: zirconia beads 1 mmφ). The obtained slurry was dried under reduced pressure, and the resulting powder was pulverized with a pulverizer to obtain a composite powder. The composite powder was filled in a resin dish and press molded to obtain a foundation.

Reference Examples 5-1 and 5-2
The oil phase part heated and dissolved at 80 ° C. was added to the powder part in the formulation shown in Table 5, mixed with a Henschel mixer, and pulverized with a pulverizer. The obtained powder was filled in a resin dish and press-molded to obtain a foundation.

  The foundations obtained in Example 5 and Reference Example 5 were evaluated in the same manner as described above for usability and impact resistance. The results are shown in Table 5. In the table, Trefill E-506C (Toray Dow Corning Silicone Co., Ltd .; trade name) is used as the spherical silicone elastomer, and KSP-100 (Shin-Etsu Chemical Co., Ltd.) is used as the spherical silicone resin-coated silicone elastomer. It was.

  From Table 5, it can be seen that all evaluation items are improved in Example 5 as compared with Reference Example 5.

Example 6
The oil phase part heated and dissolved at 80 ° C. was added to the powder part in the formulation shown in Table 6, mixed with a Henschel mixer, and pulverized with a pulverizer. The obtained powder was filled in a resin dish to obtain loose powder.

Example 7
The oil phase part heated and dissolved at 80 ° C. was added to the powder part in the formulation shown in Table 7, mixed with a Henschel mixer, and pulverized with a pulverizer. The obtained powder was filled in a resin dish and press-molded to obtain an interesting result.

Example 8
The oil phase part heated and dissolved at 80 ° C. was added to the powder part in the formulation shown in Table 8, mixed with a Henschel mixer, and pulverized with a pulverizer. An eye shadow was obtained by filling the resulting powder into a resin pan and press molding.

Example 9 (Example 9-1 to Example 9-6)
The oil phase part heated and dissolved at 80 ° C. was added to the powder part in the formulation shown in Table 9, mixed with a Henschel mixer, and then pulverized with a pulverizer. A powdery foundation was obtained by filling the resulting powder in a resin pan and press molding.

FIG. 3 is a view showing a photograph of an AFM image of the cationic surfactant-treated powder obtained in Production Example 1.

Claims (6)

  A cationic surfactant-treated powder whose surface is treated with a cationic surfactant and a spherical elastic polymer powder are blended, and the powder serving as a substrate for the cationic surfactant-treated powder is muscovite. A powder cosmetic comprising one or more selected from phlogopite, biotite, synthetic fluorine phlogopite, and sericite.   The powder cosmetic according to claim 1, wherein the spherical elastic polymer powder is an organopolysiloxane elastomer spherical powder. The powder cosmetic according to claim 1, wherein the cationic surfactant-treated powder is an inorganic powder surface-treated with a tetraalkylammonium salt represented by the following general formula (1).
(In the formula, X is a chlorine atom or a bromine atom, and any one or more of R1 to R4 is a linear alkyl group having 10 to 22 carbon atoms, and the remainder is a straight chain having 1 to 10 carbon atoms. A chain alkyl group.)   The powder cosmetic was obtained by mixing and / or dispersing and / or pulverizing a material containing at least a cationic surfactant-treated powder, a spherical elastic polymer powder, an oil component, and a volatile solvent. The powder cosmetic according to claim 1, wherein the powder cosmetic is obtained by filling a slurry in an intermediate dish and performing suction press molding.   The powder cosmetic was obtained by mixing and / or dispersing and / or pulverizing a material containing at least a cationic surfactant-treated powder, a spherical elastic polymer powder, an oil component, and a volatile solvent. 2. The powder cosmetic according to claim 1, wherein the powder cosmetic is obtained by filling the slurry in an intermediate dish, removing the solvent by evaporation and drying, and then press molding. A cationic surfactant-treated powder obtained by treating the surface of a substrate powder composed of one or more selected from muscovite, phlogopite, biotite, synthetic fluorine phlogopite, and sericite with a cationic surfactant; A composite powder obtained by evaporating and drying a slurry obtained by mixing and / or dispersing and / or grinding a material containing at least a spherical elastic polymer powder and a non-volatile oil in a volatile solvent was blended. Cosmetics characterized by that.