Solid cosmetics

Abstract

To provide a solid cosmetic for forming a cosmetic film having good spreadability when taking out or application, no stickiness and excellent cosmetic sustainability, uniformity or the like and also having excellent visual effect.SOLUTION: There is provided a solid cosmetic obtained by blending 5 to 15 mass% of a component (A) a silicone elastomer, a component (B) isododecan, a component (C) a film-forming resin, 20 to 60 mass% of a component (D) a brilliant powder and a component (E) a liquid fatty acid ester oil, wherein the total amount of powders including the component (A) and the component (D) is 40 to 70 mass% in the whole cosmetic.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a solid cosmetic preparation. [Background technology]

[0002] In the field of makeup cosmetics such as foundation, eye shadow, and cheek color, oil-based cosmetics and powder cosmetics are generally known. Recently, cosmetics in a region between powder cosmetics and oil-based cosmetics, for example, a region called funicular region, have been developed. Furthermore, cosmetics having high elasticity and a comfortable feel when used as such funicular region cosmetics have been studied.

[0003] For example, Patent Document 1 studies an elastic gel-type cosmetic preparation that is in the intermediate region between powder cosmetics and oil-based cosmetics, and that has a unique elasticity and a unique feel when used that cannot be obtained with conventional powder cosmetics or oil-based cosmetics. However, since the cosmetic composition of Patent Document 1 contains a larger amount of liquid silicone oil than general solid powder cosmetics, the cosmetic coating film tends to become wrinkled over time and the cosmetic durability is not satisfactory.

[0004] In Patent Document 2, a solid cosmetic preparation that has a soft feel and excellent adhesion and makeup retention is studied by blending lauroyl lysine powder and spherical silicone particles. However, although the formulation in Patent Document 2 has excellent spreadability and a soft feel, it does not last long enough as a cosmetic formulation to be applied around areas with a lot of movement, such as eye shadow, and when a large amount of glittering powder with a large particle size was blended, problems such as powder falling off occurred over time.

[0005] Furthermore, Patent Document 3 discloses an elastic gel oily cosmetic composition that is excellent in practical use by blending inulin fatty acid esters. However, blending inulin fatty acid causes stickiness during use, making it difficult to obtain a smooth feel during use.

[0006] Patent Document 4 discloses a cosmetic that forms a uniform cosmetic film that has high elasticity during use and is excellent in water resistance and sebum resistance by combining a partially crosslinked organopolysiloxane polymer with a specific dextrin fatty acid ester, which is a film-forming component, in a specific ratio range of oil that is liquid at room temperature and powder. However, since the specific dextrin fatty acid ester has tackiness, it is prone to become sticky during use, making it difficult to obtain a smooth feel during use. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2005-314369 A [Patent Document 2] Patent No. 5784932 [Patent Document 3] JP 2008-273942 A [Patent Document 4] JP 2016-190838 A Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention has been made to solve the above problems, and has an object to provide a solid cosmetic preparation which has good spreadability when applied and does not come off easily, is not sticky, and has excellent cosmetic durability, uniformity, etc., and further forms a cosmetic film which has excellent visual effects. [Means for solving the problem]

[0009] The present invention relates to a silicone elastomer comprising: Component (A) 5 to 15% by mass Component (B) Isododecane Component (C) Trimethylsiloxysilicate 0.1 to 10% by mass Component (D) glittering powder 20 to 60 mass% and Component (E) Liquid fatty acid ester oil the total amount of powder containing the above component (A) and component (D) is 40 to 70 mass % of the total cosmetic composition; This relates to solid cosmetics in the funicular area. Titanium oxide-coated glass powder for the entire solid cosmetic product The content is preferably 0.1 to 10% by mass. Effect of the Invention

[0010] The solid cosmetic preparation of the present invention has elasticity during use, excellent water resistance and cosmetic durability, is non-sticky in use, has good color development, and has an excellent visual effect after application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The present invention will be described in detail below. The present invention relates to the development of a solid cosmetic preparation that combines elasticity during use and cosmetic performance by combining conventionally known cosmetic materials within specific ranges.

[0012] Since glittering powder has a fluffy feel, it is prone to powder flying after application and makeup retention tends to be reduced. Therefore, when it is blended in a high amount in a cosmetic, there is a problem that makeup comes off significantly. In the present invention, by blending it in a high amount in a specific cosmetic base, the above-mentioned adhesion is improved, and the problems of powder flying and makeup retention are also solved. Furthermore, since it is blended in a high amount of glittering powder, it is possible to obtain a cosmetic film with a characteristic excellent visual effect.

[0013] The solid cosmetic preparation of the present invention contains a silicone elastomer as component (A). The silicone elastomer refers to a crosslinked polymer in which silicone polymers are linked in a three-dimensional network. By incorporating the silicone elastomer, an elastic oil-based cosmetic preparation can be obtained. The silicone elastomer as component (A) used in the present invention may be used as it is in a solid state, or may be used after being uniformly mixed with liquid oil. From the viewpoint of improving dispersibility in the cosmetic preparation, it is preferable to use it as a dispersion liquid mixed with liquid oil.

[0014] The silicone elastomer is not particularly limited, and examples thereof include (dimethicone / vinyl dimethicone) crosspolymer, (dimethicone / phenylvinyl dimethicone) crosspolymer, (vinyl dimethicone / lauryl dimethicone) crosspolymer, (vinyl dimethicone / methicone silsesquioxane) crosspolymer, (PEG-15 / lauryl dimethicone) crosspolymer, and the like.

[0015] Of these silicone elastomers, from the viewpoint of usability, it is preferable that the cosmetic composition of the present invention contains one or more types selected from (dimethicone / vinyl dimethicone) crosspolymer, (vinyl dimethicone / methicone silsesquioxane) crosspolymer, and (diphenyl dimethicone / vinyl diphenyl dimethicone / silsesquioxane) crosspolymer.

[0016] The (dimethicone / vinyl dimethicone) crosspolymer may be blended directly into the cosmetic composition, or may be blended as an oil dispersion in which it is dispersed in liquid oil. Examples of solid crosspolymers include Trefil E-506S (active content 100% by mass) (manufactured by Dow Corning Toray Co., Ltd.), and examples of oil dispersions that can be used include commercially available products such as KSG-15 (active content 7% by mass), which is a mixture with decamethylcyclopentasiloxane (KF-995), KSG-16 (active content 25% by mass), which is a mixture with low-viscosity dimethylpolysiloxane (KF-96A-6cs) (both manufactured by Shin-Etsu Chemical Co., Ltd.), and Trefil E-508 (active content 70%), which is a mixture with dimethicone. As the (vinyl dimethicone / methicone silsesquioxane) crosspolymer, commercially available products such as KSP-100 (active content 100% by mass) (manufactured by Shin-Etsu Chemical Co., Ltd.) can be used as a solid. As the (diphenyl dimethicone / vinyl diphenyl dimethicone / silsesquioxane) crosspolymer, a commercially available product such as KSP-300 (active content 100% by mass) (manufactured by Shin-Etsu Chemical Co., Ltd.) can be used as a solid.

[0017] The content of component (A) is 5 to 15% by mass based on the total solid cosmetic preparation from the viewpoint of the elasticity and unique comfort of the product. If it is less than 5% by mass, it is difficult to obtain a soft elastic feel, and if it is more than 15% by mass, it tends to be weak in impact resistance. The content of component (A) is more preferably 7 to 13% by mass.

[0018] The solid cosmetic preparation of the present invention contains isododecane as component (B). By incorporating the above-mentioned isododecane, the cosmetic film adheres tightly after the isododecane evaporates, and the cosmetic lasts longer. Specific examples of the above-mentioned isododecane on the market include Marukasol R (manufactured by Maruzen Petrochemical Co., Ltd.) and Permethyl 99A (manufactured by INEOS MANUFACTURING DEUTSCHLAND).

[0019] The content of component (B) is preferably 0.1 to 10% by mass, more preferably 1 to 5% by mass, based on the total mass of the solid cosmetic preparation. If it is less than 0.1% by mass, it is difficult to achieve a sufficient cosmetic durability, and if it is more than 10% by mass, there is a concern that the contents may shrink.

[0020] Furthermore, the solid cosmetic preparation of the present invention contains a film-forming resin as component (C). The film-forming resin, which is component (C) used in the present invention, is a resin that has the property of forming a film after dissolving in a volatile solvent or the like, spreading the mixed solution on a petri dish, and drying it. The film-forming resin is not particularly limited, and any resin that is normally used in cosmetics can be used. However, the obtained film may crack as it dries, and may not be obtained as a single film.

[0021] Examples of the film-forming resin include silicone resins and hydrocarbon resins. Among these film-forming resins, silicone resins are more preferred because they have excellent water resistance and sebum resistance. Specific examples of the silicone resin include alkyl acrylate copolymer methylpolysiloxane ester, trimethylsiloxysilicate, and polymethylsilsesquioxane, and among these, trimethylsiloxysilicate is particularly preferred. The film-forming resin may contain one or more of these.

[0022] Commercially available examples of the film-forming resin include SR1000 (trimethylsiloxysilicate) and SILFORM FLEXIBLE RESIN (polymethylsilsesquioxane) (manufactured by Momentive Corporation). When using these, it is preferable to dissolve them in isododecane (component (B)) before use, but this is not limiting, and they may be dissolved in a volatile oil such as cyclopentasiloxane or other non-volatile oil before use.

[0023] In addition, the silicone resin may be a commercially available product mixed with a volatile oil. Examples of such mixtures include X-21-5616 (60 parts of trimethylsiloxysilicate and 40 parts of isododecane) (manufactured by Shin-Etsu Chemical Co., Ltd.), and the like. These may be contained alone or in combination.

[0024] The content of component (C) in the present invention is not particularly limited, but is preferably in the range of 0.1 to 10% by mass, and more preferably 1 to 7% by mass, based on the total mass of the solid cosmetic preparation.

[0025] The solid cosmetic preparation of the present invention contains a glittering powder as component (D). The glittering powder is a powder that has a luster due to light reflection, interference, diffusion, etc. Such component (D) is not particularly limited, and examples thereof include titanium oxide-coated mica, titanium oxide-coated synthetic phlogopite, titanium oxide-coated synthetic mica, synthetic phlogopite, synthetic mica, glass powder, titanium oxide-coated glass powder, boron nitride, bismuth oxychloride, aluminum powder, etc. The glittering powder may be one or more of these.

[0026] The content of component (D) is 20 to 60% by mass, and more preferably 25 to 50% by mass, based on the total mass of the solid cosmetic preparation. If the content of component (D) is less than 20% by mass, it is not possible to impart a good glossy finish, and if it exceeds 60% by mass, it is undesirable because it becomes powdery and the good elastic feel and spreadability are deteriorated.

[0027] The average particle size of the glittering powder of component (D) is not particularly limited, but from the viewpoint of imparting good glittering properties, it is preferably 1 to 200 μm, more preferably 25 to 190 μm. The glittering powder of component (D) may be surface-treated with a commonly known treating agent such as a fluorine compound, a silicone compound, a metal soap, a wax, a surfactant, a fat or oil, or a hydrocarbon. In addition, the above powder may be treated with one or more coloring materials selected from inorganic pigments such as iron oxide, ultramarine, and Prussian blue, organic dyes such as Red No. 202, Red No. 226, Yellow No. 4, Yellow No. 401, Yellow No. 205, Blue No. 1, and Blue No. 404, and natural dyes such as carmine, for the purpose of coloring.

[0028] The glittering powder of component (D) is commercially available as titanium oxide-coated mica and its colorant-treated products, such as Chimiron Super Red, Chimiron Super Blue, Chimiron Super Gold, Chimiron Splendid Red, Chimiron Splendid Blue, Chimiron Splendid Gold, and Chimiron Splendid Violet (all manufactured by Merck), Flamenco Orange, Flamenco Red, Flamenco Blue, Flamenco Super Pearl, Flamenco Sparkle Orange, Flamenco Sparkle Red, and Flamenco Super Pearl. Examples of suitable pigments include Menco Sparkle Blue, Flamenco Large Sparkle, Cloisonne Blue, Cloisonne Red, Cloisonne Copper, Cloisonne Rouge Flambé, Duochrome YR, Duochrome BR, Duochrome RY, and Duochrome GY (all manufactured by Engelhard), and titanium oxide-coated synthetic phlogopite, Prominence SF, Prominence BF, Prominence RYE, Prominence GF, Prominence RYF, Prominence YF, Prominence VH, and Prominence SH (all manufactured by Topy Industries, Ltd.).

[0029] Furthermore, it is preferable that component (D) contains titanium oxide-coated glass powder. By including titanium oxide-coated glass powder, the finish has a particularly good glossy feel. In the past, when a large amount of titanium oxide-coated glass powder was included, there was a problem with the durability of the makeup, such as the titanium oxide-coated glass powder falling onto the cheeks when used around the eyes. However, in the present invention, by combining component (B) a volatile oil and component (C) a film-forming resin, the beautiful glossy finish derived from the titanium oxide-coated glass powder is sustained, and the problem of the titanium oxide-coated glass powder scattering in areas other than where the cosmetic is applied has been solved. Commercially available titanium oxide-coated glass powders include Metashine 1040RS, Metashine 1080RS, and Metashine 1120RS (all manufactured by Nippon Sheet Glass Co., Ltd.).

[0030] The content of the titanium oxide-coated glass powder is preferably 0.1 to 15% by mass based on the total amount of the solid cosmetic. If it is less than 0.1% by mass, the effect may not be obtained, and if it exceeds 15% by mass, it is undesirable because it gives a strong gritty feeling when used and impairs the smooth feel. More preferably, the lower limit of the content is 1% by mass, and the upper limit is 13% by mass.

[0031] Furthermore, the solid cosmetic preparation of the present invention is characterized in that the total amount of powder containing components (A) and (D) is 40 to 70% by mass based on the total amount of the solid cosmetic preparation. When the total amount of powder is within this range, a cosmetic preparation with a characteristically elastic and pleasant feel can be obtained. If the total amount of powder relative to the entire solid cosmetic preparation is less than 40% by mass, the oily feeling increases, stickiness occurs, and it becomes difficult to obtain a good elastic feel.If it exceeds 70% by mass, it becomes powdery, and the good elastic feel and spreadability become poor, which is undesirable.

[0032] The solid cosmetic preparation of the present invention may contain powders other than components (A) and (D). There are no particular limitations on the other powders, and any powders that are normally used in cosmetics can be used. There are no limitations on the size, shape, etc. of these powders, and they can be used alone or in combination of two or more types.

[0033] The component (E) used in the present invention is a liquid fatty acid ester oil, and the term "liquid" means that the viscosity at room temperature is 100 cs or less. The component (E) is preferred in the present invention from the viewpoint of compatibility with the component (A) silicone elastomer and the component (B) isododecane.

[0034] In the present invention, the viscosity is a value measured at 20° C. using a Brookfield type viscometer, for example, a single cylinder type rotational viscometer Vistron VS-A1 (manufactured by Shibaura Systems Co., Ltd.).

[0035] Component (E) is not particularly limited as long as it is one that is normally used in cosmetics, and examples thereof include cetyl palmitate, octyldodecyl myristate, isocetyl myristate, cetyl 2-ethylhexanoate, ethylhexyl palmitate, isotridecyl isononanoate, isononyl isononanoate, etc. Among these, in particular, isononyl isononanoate, isotridecyl isononanoate, neopentyl glycol dicaprate (manufactured by Nisshin Oillio Group, Ltd.), etc. can be used as component (E). Commercially available products that can be used include Salacos 99, Salacos 913, and Esthemol N-01 (manufactured by Nisshin Oillio Group, Ltd.).

[0036] The content of component (E) of the present invention is not particularly limited, but is preferably 1 to 20% by mass, and more preferably 2 to 6% by mass, based on the total mass of the solid cosmetic preparation.

[0037] The solid cosmetic preparation of the present invention may contain an oily component other than component (E). The other oily component may be any of liquid oil, semi-solid oil, solid oil, etc., and any oil typically used in cosmetics may be used.

[0038] As another oily component, liquid silicone oil may be contained, but the content is preferably 30% by mass or less based on the total mass of the solid cosmetic preparation. If the content exceeds 30% by mass, the cosmetic film may become easily wrinkled.

[0039] In addition to the above-mentioned essential components, the solid cosmetic preparation of the present invention may contain, as necessary, appropriate amounts of aqueous components, water-soluble polymers, surfactants, preservatives, antioxidants, thickeners, fragrances, ultraviolet absorbers, ultraviolet scattering agents, dyes, pigments, fragrances, moisturizers, whitening agents, anti-inflammatory agents and other medicinal components, within the scope of the invention.

[0040] The method for producing the solid cosmetic of the present invention is not particularly limited, but examples include a method in which the oil component is heated as necessary, mixed uniformly, and then added to the powder component while stirring with a mixer. The filling method is not particularly limited, but filling using an extrusion molding device is preferable because it allows air trapped in the bulk to be removed.

[0041] The solid cosmetic composition of the present invention can be suitably used as a makeup cosmetic composition, and more specifically, can be used as, for example, a foundation, a blusher, an eye shadow, an eyeliner, and the like. EXAMPLES

[0042] The present invention will be further described below with reference to examples, but the present invention is not limited to these. Note that all blend amounts are expressed as % by mass.

[0043] Prior to the examples, the test methods and evaluation methods used in the present invention will be explained. (Evaluation methods 1 and 2: Sensory characteristics (elastic feel, ease of application, uniformity and adhesion of makeup film) and makeup durability) A panel of 20 experts in cosmetic evaluation used the cosmetics of the examples and comparative examples, and each member rated the sensory characteristics (elastic feel, ease of removal, uniformity and adhesion of the cosmetic film) and cosmetic durability on a 5-point scale according to the following criteria, assigning a score to each cosmetic, and judging the average score of all panelists according to the following 4-point scale. Note that cosmetic durability was evaluated by comparing the condition immediately after application of the cosmetics with the condition 5 hours after application (in daily life).

[0044] (Evaluation Criteria) Evaluation result: Score Very good: 5 points Good: 4 points Average: 3 points Slightly poor: 2 points Defective: 1 point (Judgment criteria) Average score: Judgement 4.5 or higher: ◎ 3.5 or more and less than 4.5: Yes 1.5 or more and less than 3.5: △ Less than 1.5: ×

[0045] The solid cosmetic preparations of Examples 1 to 7 and Comparative Examples 1 to 11 were prepared by mixing the following raw materials to obtain a cosmetic base material, extruding the resulting material, and pressing to remove the air. In the table, decamethylcyclopentasiloxane is derived from the base oil contained in KSG-15. Low viscosity dimethylpolysiloxane is derived from the base oil contained in KSG-16. The amount of silicone elastomer in Table 1 is calculated as the active component.

[0046] KSG-15 (Dimethicone / Vinyl Dimethicone) Crosspolymer Active content 7% Mixture with Decamethylcyclopentasiloxane Manufactured by Shin-Etsu Chemical Co., Ltd. KSG-16 (Dimethicone / Vinyl Dimethicone) Crosspolymer Active content 25% Mixture with low viscosity dimethylpolysiloxane Manufactured by Shin-Etsu Chemical Co., Ltd. KSP-100 (vinyl dimethicone / methicone silsesquioxane) crosspolymer, 100% active ingredient, manufactured by Shin-Etsu Chemical Co., Ltd. KSP-300 (Diphenyl Dimethicone / Vinyl Diphenyl Dimethicone / Silsesquioxane) 100% active ingredient, manufactured by Shin-Etsu Chemical Co., Ltd. Decamethylcyclopentasiloxane: KF-995 manufactured by Shin-Etsu Chemical Co., Ltd. Isododecane: X-21-5616 60 parts trimethylsiloxysilicate and 40 parts isododecane, manufactured by Shin-Etsu Chemical Co., Ltd. Trimethylsiloxysilicate: X-21-5616 60 parts trimethylsiloxysilicate and 40 parts isododecane, manufactured by Shin-Etsu Chemical Co., Ltd. Low viscosity dimethylpolysiloxane: KF-96A-6cs, manufactured by Shin-Etsu Chemical Co., Ltd. Phenyl-modified silicone oil: Silicone KF-56A, manufactured by Shin-Etsu Chemical Co., Ltd. Isotridecyl isononanoate: Salacos 99, manufactured by Nisshin Oillio Group Co., Ltd. Titanium oxide coated mica (average particle size 25-60μm) Timiron series (Merck) Titanium oxide coated glass powder (average particle size 40-120μm) Metashine series, manufactured by Nippon Sheet Glass Co., Ltd. Dextrin fatty acid ester: Leopearl KS2 (manufactured by Chiba Flour Mills)

[0047] [Table 1]

[0048] The results in Table 1 show that the solid cosmetic preparation of the present invention has an elastic feel and also has excellent cosmetic performance. Comparative Examples 1 to 9, which do not satisfy the requirements of the present invention, were unable to simultaneously satisfy all items. Comparative Example 10, in which a dextrin fatty acid ester was added, showed a decreased smooth feel when used compared to Comparative Example 3, which contained the same amount of glittering powder. Comparative Example 11, in which a regular powder cosmetic preparation was highly blended with glittering powder, showed insufficient uniformity of the cosmetic film, adhesion, and cosmetic durability.

Claims

1. Component (A) Silicone elastomer 5 to 15% by mass Component (B) Isododecane Component (C) Trimethylsiloxysilicate 0.1 to 10% by mass Component (D) glittering powder: 20 to 60% by mass, and Component (E) Liquid fatty acid ester oil the total amount of powder containing component (A) and component (D) is 40 to 70% by mass in the total cosmetic preparation, A solid cosmetic product in the funicular area.

2. A solid cosmetic as described in claim 1, containing titanium oxide-coated glass powder in an amount of 0.1 to 10 mass% based on the total mass of the solid cosmetic.

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