JP4960740B2 - Powder cosmetics - Google Patents

Description

  The present invention relates to a powder cosmetic having an ultraviolet protection function. More specifically, the present invention relates to a powder cosmetic containing a water-soluble ultraviolet absorber.

Conventionally, in order to give cosmetics a high UV protection function, it has been generally carried out to contain oil-soluble UV absorbers in addition to inorganic UV scattering agents such as zinc oxide, titanium dioxide and cerium oxide. Yes. However, cosmetics containing a large amount of oil-soluble UV absorbers to improve the UV protection function may give a feeling of shine and stickiness. Therefore, there is an emulsified composition containing a water-soluble ultraviolet absorber (see Patent Document 1). Further, as a technology for enhancing the high ultraviolet protection function, there is a technology for containing an oil-soluble ultraviolet absorber and a water-soluble ultraviolet absorber in combination. (See Patent Document 2). Further, as a method for improving SPF in powder cosmetics, there is a technique in which a hardly soluble ultraviolet absorber is coated on the powder surface and uniformly dispersed in the base (see Patent Document 3).
JP-A-7-101847 (pages 1 to 5) Japanese Patent Laying-Open No. 2005-255669 (first page to tenth page) Patent publication number WO 98/09610 (page 1 to page 27)

  The technique of Patent Document 1 is an emulsified composition having excellent stability and usability that prevents crystallization of a water-soluble UV absorber over time, and the technique of Patent Document 2 is excellent in stability over time with low viscosity. This is a technique related to an oil-in-water sunscreen with an excellent fresh feel, but all of these technologies require the presence of an aqueous system for containing a water-soluble ultraviolet absorber. In the technique of Patent Document 3, a slightly soluble ultraviolet absorber is coated on the powder surface, but dispersibility in cosmetics may be a problem depending on the coating amount.

  Since water-soluble UV absorbers are dissolved in water and used in this way, in powder cosmetics, techniques using oil-soluble UV absorbers are common, and in order to obtain a high UV protection effect, oil-soluble UV absorbers are used. It was necessary to add a large amount of ultraviolet absorber. In the present invention, by developing a powder cosmetic containing a water-soluble UV absorber, the sticky feeling due to the oil-soluble UV absorber blending is reduced, and further, the feeling of roughness in crystallization of the water-soluble UV absorber is reduced. The objective is to develop a powder cosmetic that has no UV protection effect.

  In view of such circumstances, the present inventors have conducted extensive studies to solve the above problems, and as a result, phenylbenzimidazolesulfonic acid, triethanolamine and / or monoethanolamine, powder, and powder containing water-soluble polyhydric alcohol. The cosmetic provides a powder cosmetic having a high ultraviolet protection function without causing a storage stability problem due to precipitation of a water-soluble ultraviolet absorber and without feeling sticky.

That is, the present invention provides the following components (A) to (D);
(A) Phenylbenzimidazolesulfonic acid (B) One or two kinds selected from triethanolamine and / or monoethanolamine (C) Powder (D) Dipropylene glycol, 1,3-butylene glycol, propylene glycol It provides a powder cosmetic containing 0.4 to 15% by mass of one or more polyhydric alcohols selected from glycerin and polyethylene glycol having an average molecular weight of less than 1500.

  It is intended to provide a powder cosmetic characterized in that the mass ratio (D) / (A) of the component (D) and the component (A) is 1.5 or more and 13 or less.

Furthermore, the present invention provides a powder cosmetic characterized by containing one or more oil-soluble ultraviolet absorbers selected from octyl paramethoxycinnamate, octyl salicylate, homomenthyl salicylate, and octocrylene as component (E). is there.

  The powder cosmetic composition of the present invention has a high UV protection effect with good storage stability without crystallization of the water-soluble UV absorber and little roughness, and less stickiness due to the oil-soluble UV absorber. be able to.

The configuration of the present invention will be described below.
The powder cosmetic of the present invention is a powder or a cosmetic that is molded into a solid form by a known method. The component (A) phenylbenzimidazolesulfonic acid of the present invention is used as a water-soluble UV absorber for the purpose of UV protection.

  The content of the component (A) of the present invention is preferably 0.5 to 3% by mass (hereinafter simply referred to as “%”) in the powder cosmetic, and more preferably 1 to 2%. If it is used within this range, an excellent UV protection effect can be exhibited with almost no stickiness.

  The component (B) triethanolamine and monoethanolamine are blended for the purpose of neutralizing the component (A). It can be easily and uniformly mixed with the component (D) polyhydric alcohol, and the component (A) can be dissolved in the component (D) even after the component (B) is added and neutralized. is there. Further, when the component (A) is neutralized using an alkali metal hydroxide such as sodium hydroxide or potassium hydroxide, the solubility in the component (D) is significantly reduced. It may cause a rough feeling of use such as crystallization of unneutralized products and alkali metal hydroxides, and may cause quality problems and skin safety problems such as reduced UV protection. .

  Although content of a component (B) is not specifically limited, It is mix | blended for the purpose of neutralization of a component (A), and is suitably determined according to the compounding quantity of a component (A). Specifically, the content ratio (A) / (B) of the component (A) and the component (B) is preferably 0.8 or more and less than 2.2, and the neutralization may not be complete neutralization. Partial neutralization is also possible. By using within this range, the neutralized product of the component (A) phenylbenzimidazole sulfonic acid can be sufficiently dissolved and uniformly dispersed, so that not only the UV protection function is dramatically improved, but also the undissolved product. Usability is remarkably improved without feeling the roughness during use.

  If the powder of component (C) is a powder that is used as a powder generally used in cosmetics, the shape of a sphere, plate, needle, etc., the particle size of fumes, fine particles, pigment grade, It is not particularly limited by the particle structure such as porous or nonporous, and includes inorganic powders, glitter powders, organic powders, pigment powders, composite powders, and the like. Specifically, titanium oxide, conch, ultramarine, bengara, yellow iron oxide, black iron oxide, titanium oxide, zinc oxide, aluminum oxide, silicon dioxide, magnesium oxide, zirconium oxide, magnesium carbonate, calcium carbonate, chromium oxide, Chromium hydroxide, carbon black, aluminum silicate, magnesium silicate, magnesium aluminum silicate, mica, synthetic mica, synthetic sericite, sericite, talc, kaolin, silicon carbide, barium sulfate, bentonite, smectite, boron nitride, etc. Inorganic powders, bismuth oxychloride, titanium mica, iron oxide coated mica, iron oxide mica titanium, organic pigment-treated mica titanium, aluminum powder and other glittering powders, nylon powder, polymethyl methacrylate, acrylonitrile-methacrylic acid Heavy Body powder, vinylidene chloride-methacrylic acid copolymer powder, polystyrene, polyethylene powder, polystyrene powder, organopolysiloxane elastomer powder, polymethylsilsesquioxane powder, polytetrafluoroethylene powder, wool powder, silk powder, crystalline cellulose, Organic powders such as magnesium stearate, zinc stearate, N-acyl lysine, organic tar pigments, pigment powders such as organic pigment lake pigments, fine particle titanium oxide-coated mica titanium, fine particle zinc oxide-coated mica titanium, sulfuric acid Examples include composite powders such as barium-coated mica titanium, titanium oxide-containing silicon dioxide, and zinc oxide-containing silicon dioxide, and these can be used alone or in combination of two or more. These powders may be used singly or in combination of two or more, and known methods using fluorine compounds, silicone oils, metal soaps, waxes, surfactants, fats and oils, etc. May be subjected to surface treatment.

The polyhydric alcohol selected from the component (D) dipropylene glycol, 1,3-butylene glycol, propylene glycol, glycerin, polyethylene glycol having a molecular weight of 1500 or less neutralizes the component (A) and the component (B), and It is used for the purpose of a solvent that is stably present in powder cosmetics. One or more of these can be used. Any polyhydric alcohol may be selected and used, but when dipropylene glycol is used, the solubility of the component (A) neutralized by the component (B) is greatly improved, It is preferable because the sticky feeling can be reduced.

  In the powder cosmetic of the present invention, the content of the component (D) polyhydric alcohol is 0.4 to 15% in the powder cosmetic. More preferably, it is 1 to 6%. If it uses in this range, the powder cosmetics which have moderate moisturizing feeling without feeling a sticky feeling will be obtained.

  The content mass ratio (D) / (A) between the component (D) and the component is not particularly limited, but is neutralized by the component (B) if (D) / (A) is 1.5 or more and 13 or less. Ingredient (A) can be sufficiently dissolved.

  In the present invention, an oil-soluble ultraviolet absorber selected from octyl paramethoxycinnamate, octyl salicylate, homomenthyl salicylate, and octocrylene can be further blended as component (E). One or more of these can be used. Any oil-soluble ultraviolet / UV absorber may be used, but when octyl paramethoxycinnamate is used, the ultraviolet protection effect is dramatically improved. In addition, component (E) can be used in combination with phenylbenzimidazolesulfonic acid of component (A). By using a water-soluble UV absorber and an oil-soluble UV absorber in combination, it is possible to protect against UV rays more effectively than using them alone.

  The content of the component (E) is not particularly limited, but is preferably 0.1 to 10% in the powder cosmetic and more preferably 0.5 to 7 in order to reduce irritation to the skin and obtain an ultraviolet protection effect. % Is more preferable. If used in this range, there is little irritation to the skin and an excellent UV protection effect can be exhibited.

  The powder cosmetics of the present invention include other components used in normal cosmetics, for example, oily components such as hydrocarbons, higher fatty acid esters, vegetable oils, silicone oils, triglycerides, fluorine oils, and polymer substances. , Emulsifying aids such as higher alcohols and monoglycerides, water-soluble components such as polyols other than component (D), surfactants, moisturizers other than component (D), antioxidants, cosmetic ingredients, preservatives, and perfumes Moreover, a refreshing agent etc. can be contained in the range which does not impair the effect of this invention. Moreover, in the powder cosmetic of the present invention, water can be blended within a range that can be made into powder.

  The powder cosmetic of the present invention can also contain water. Examples of the water include purified water, hot spring water, deep water, or steam distilled water such as plants. As a method of inclusion, the component (D) polyhydric alcohol may be used. Further, when the components (A) to (D) of the present invention are kneaded with water to form a slurry, it is preferable to evaporate and remove the contained water in order to obtain a powder cosmetic.

  As the method for producing the powder cosmetic of the present invention, for example, the alkali of the component (B) is uniformly mixed with the polyhydric alcohol of the component (D), and then the phenylbenzimidazole sulfonic acid of the component (A) is added and mixed. To neutralize and dissolve. Examples thereof include a method in which an oil-soluble ultraviolet absorber is added and mixed, and further, powder is added and mixed uniformly to obtain the powder cosmetic of the present invention.

Examples of the use of the powder cosmetic of the present invention include powdery or powdered solid foundations, motley, blusher, eye shadows, etc., but powdered cosmetics such as foundation and humor are preferred.

  EXAMPLES Next, although an Example is given and this invention is further demonstrated, this invention is not limited at all by this.

Invention products 1 to 13 and comparative products 1 to 4: Powder solid foundation The powder solid foundation was prepared by the composition shown in Table 1 and the following production method. The obtained powder solid foundation was evaluated for UV protection effect, feeling of use (no rough feeling during use), and feeling after use (no sticky feeling after use) by the following methods. To Table 3.

(Note 1) MICRO TITANIUM OXIDE MT-500SA: average primary particle size 0.035 μm (manufactured by Teica)
(Note 2) TANIX JR800: Average primary particle size: 0.27 μm (manufactured by Teica)
(Note 3) PEG400: Average molecular weight 400 (manufactured by Sanyo Chemical Industries)
(Manufacturing method)
A: Stir components (1) to (6) uniformly.
B: Components (7) to (13) are uniformly mixed, and then components (14) to (16) are added and mixed and dissolved.
C: Add B to A and mix uniformly, then press-fill into a metal pan.

(Evaluation method: UV protection effect)
A constant amount (2 mg / cm2) of the foundation of the present invention product and comparative product was applied on transpore tape (manufactured by 3M), used as a test sample, and SPF value was measured by SPF-290ANALYZER (manufactured by OPTOMETRICS). The evaluation criteria were used.

(A) Four-step evaluation criteria ◎: SPF value is 20 or more ○: SPF value is 15 or more and less than 20 Δ: SPF value is 10 or more and less than 15 ×: SPF value is less than 10

(Evaluation method: feeling after use, feeling after use)
About 10 samples of the professional evaluation panels 1 to 13 of the present invention and comparative samples 1 to 4, the feeling of use (graininess during use) and the feeling after use (feeling of stickiness after use) are as follows (b ) And (c) Evaluation based on four levels.

(B) Four-level evaluation criteria for feeling of use (feeling of roughness during use) ◎: Eight or more of 10 persons did not feel a feeling of roughness.
○: 6 to 7 out of 10 did not feel rough.
Δ: 3 to 5 out of 10 did not feel rough.
X: 2 or less out of 10 did not feel rough.
(C) Four-stage evaluation criteria for feeling after use (stickiness after use): 8 or more of 10 people did not feel sticky.
○: 6 to 7 out of 10 did not feel sticky.
Δ: 3 to 5 out of 10 did not feel sticky.
X: 2 or less of 10 did not feel sticky.

  The products 1 to 13 of the present invention were powder solid foundations having a smooth feeling of use without a feeling of roughness during use while having a sufficient UV protection effect, and having little stickiness after use. Inventive product 3 has a slightly rough feel during use because it has a low content of polyhydric alcohol of component (D) relative to the content of phenylbenzimidazolesulfonic acid of component (A), but at a level where there is no problem. there were. On the other hand, since the content of the polyhydric alcohol of the component (D) is large with respect to the content of the phenylbenzimidazole sulfonic acid of the component (A), the invention product 11 has a slightly sticky feeling after use but has no problem. Met. On the other hand, since the comparative product 1 does not contain the component (A) phenylbenzimidazolesulfonic acid, the ultraviolet protection effect was insufficient. Since the comparative product 2 contained too much phenylbenzimidazole sulfonic acid, it felt rough and sticky. Moreover, since the content of dipropylene glycol was insufficient, the comparative product 3 produced a rough feeling or a sticky feeling due to the crystallization and precipitation of phenylbenzimidazolesulfonic acid. Since the comparative product 4 contained too much dipropylene glycol, the sticky feeling was produced.

: Powdery powder (component) (%)
1. Talc 42.8
2. (Vinyl dimethicone / methicone silsesquioxane)
Cross polymer Note 4) 15.0
3. Polymethylmethacrylate Note) 5 10.0
4). Boron nitride 10.0
5. Zinc oxide 5.0
6.1,3-Butylene glycol 7.0
7). Phenylbenzimidazolesulfonic acid 2.0
8). Monoethanolamine 1.1
9. Octyl salicylate 1.0
10. Octyl paramethoxycinnamate 5.0
11. Squalane 1.0
12 Preservative (methyl paraoxybenzoate) 0.1
Note 4) KSP-100 (Shin-Etsu Chemical Co., Ltd.)
Note 5) Matsumoto Microsphere M101 (Matsumoto Yushi Seiyaku Co., Ltd.)

(Manufacturing method)
A. Ingredients 1-5 are mixed uniformly.
B. Ingredients 6-8 are mixed and dissolved uniformly.
C. Ingredients 9-12 are mixed and dissolved.
D. After adding B to A and mixing, C was added and mixed to obtain a powdery powder.

  The powdery white powder obtained in Example 2 was a powdery white powder that had an excellent UV protection effect, had a smooth feeling without roughness during use, and had no stickiness after use.

: Powdered solid foundation (component) (%)
1. Cerium oxide Note) 6 5.0
2.2% dimethicone-coated titanium oxide 7.0
3.2% dimethicone-coated iron oxide 3.0
4). Sericite 20.0
5. Talc 20.0
6). Synthetic phlogopite 20.0
7). Polystyrene powder Note) 7 12.0
8). Glycerin 2.0
9. Propylene glycol 2.0
10. Phenylbenzimidazolesulfonic acid 0.5
11. Triethanolamine 0.4
12 Octocrylene 1.0
13. Octyl paramethoxycinnamate 5.0
14 (Dimethicone / Vinyl dimethicone) Cross polymer Note) 8 2.0
15. Methyl paraoxybenzoate 0.1
Note 6) Seriguard W500: Average particle size: 10 to 25 μm (manufactured by Nippon Electric Works)
Note 7) Gantz Pearl GS-0605 (manufactured by Gantz Kasei)
Note 8) KSG-16 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Manufacturing method)
A. Ingredients 1-7 are mixed uniformly.
B. Ingredients 8-11 are mixed and dissolved uniformly.
C. Ingredients 12-15 are mixed uniformly.
D. After adding B to A and mixing, C was added and mixed, and press molding was performed to obtain a powder solid foundation.

  The powder solid foundation obtained in Example 3 was a powder solid foundation having an excellent UV protection effect, having a smooth use feeling without roughness during use, and having no stickiness after use.

: Powdered body powder (component) (%)
1. Talc 45.8
2. N-lauroyl-L-lysine 15.0
3. Polymethylmethacrylate Note) 5 10.0
4). Boron nitride 10.0
5. Cerium oxide 3.0
6.1,3-Butylene glycol 7.0
7). Phenylbenzimidazolesulfonic acid 2.0
8). Monoethanolamine 1.1
9. Homomentil salicylate 1.0
10. Octyl paramethoxycinnamate 5.0
11. Methyl paraoxybenzoate 0.1
Note 4) KSP-100 (Shin-Etsu Chemical Co., Ltd.)
Note 5) Matsumoto Microsphere M101 (Matsumoto Yushi Seiyaku Co., Ltd.)

(Manufacturing method)
A. Ingredients 1-5 are mixed uniformly.
B. Ingredients 6-8 are mixed and dissolved uniformly.
C. Components 9 to 11 are mixed and dissolved.
D. After adding B to A and mixing, C was added and mixed to obtain powdered body powder.

  The powdery body powder obtained in Example 4 was a powdery body powder having an excellent UV protection effect, having a smooth use feeling without roughness during use, and having no stickiness after use.

Claims (2)

The following components (A) to (D);
(A) Phenylbenzimidazolesulfonic acid 0.5-3 mass%
(B) Triethanolamine and / or monoethanolamine (C) powder 81.58-96.88 mass%
(D) Dipropylene glycol, 1,3-butylene glycol, propylene glycol,
One or more polyhydric alcohols selected from glycerin and polyethylene glycol having an average molecular weight of 1000 or less 0.4 to 15% by mass
And a mass ratio (D) / (A) of the component (D) to the component (A) is 1.5 or more and 13 or less.   The powder makeup according to claim 1, further comprising, as component (E), one or more oil-soluble ultraviolet absorbers selected from octyl paramethoxycinnamate, octyl salicylate, homomenthyl salicylate, and octocrylene. Fee.