JP2019116432A - Solid powder cosmetic and method for producing solid powder cosmetic - Google Patents

Abstract

To provide a solid powder cosmetic and a method for producing a solid powder cosmetic.SOLUTION: There is provided a solid powder cosmetic which comprises a powder phase containing colloidal silica and an oil phase, wherein 0.1 to 5 mass% of the colloidal silica is contained in the solid powder cosmetic. There is provided a solid powder cosmetic in which the powder phase further comprises talc and mica and the total content of talc and mica is 10 to 600 pts.mass based on 1 pt.mass of the colloidal silica content.SELECTED DRAWING: None

Description

  The present invention relates to a solid powder cosmetic and a method of producing the solid powder cosmetic.

  The solid powder cosmetic is one of the methods for filling the cosmetic container pan, the cosmetic base is slurried with a solvent, the slurry is filled into the pan, and then the solvent is removed and solidified. There is a molding process.

By employing a wet filling and forming process, not only the conventional filling method of filling from the opening of the saucer but also the above-mentioned slurry is filled and pressed from the filling holes in the bottom or side of the saucer Injection molding (BIM) method can be applied.
The BIM method is a step of filling a slurry using a pump from a filling hole at the bottom or side of a gold plate whose opening is previously covered in an upper mold (mold), which is included in the slurry after filling the slurry. It consists of the steps of removing a portion of the solvent by vacuum and pressing the filled slurry with the upper mold.
By using the BIM method, it is possible to make a pattern on the surface of the solid powder cosmetic and to make the solid powder cosmetic have an aesthetic appearance, and thus it is widely used in recent years.

Patent Documents 1 to 6 describe powder cosmetics produced by a wet molding method in which a slurry containing a cosmetic powder is prepared, filled in a container and molded.
Among them, Patent Document 1 describes an eye shadow prepared by preparing a cosmetic slurry containing methylpolysiloxane 2.0% -treated talc and the like, and using a back injection machine to press-fill and mold.
Further, Patent Document 2 describes a powder foundation obtained by filling and molding after adding a light fluid isoparaffin to a powder cosmetic containing silica, talc, mica and the like having a certain amount or more of oil absorption ability, and preparing a slurry. It is done.

JP, 2011-74023, A JP, 2011-105626, A JP 2012-193111 A JP, 2014-65691, A JP, 2014-101293, A JP, 2015-86156, A

  An object of the present invention is to provide a method for producing a solid powder cosmetic and a solid powder cosmetic.

  The present invention is a solid powder cosmetic containing a powder phase containing colloidal silica and an oil phase, wherein the solid powder cosmetic contains 0.1 to 5% by mass of the colloidal silica. Provide cosmetics.

  The present invention includes colloidal silica, and can be used to obtain a solid powder cosmetic by employing a wet filling and molding process of a cosmetic.

  The solid powder cosmetic composition of the present invention is a solid powder cosmetic composition comprising a powder phase containing colloidal silica and an oil phase, wherein 0.1-5% by mass of the colloidal silica is contained in the solid powder cosmetic composition. contains.

<Powder phase>
A commercially available thing can be used for colloidal silica, for example, Phylysia 350, Phylysia 740 grade | etc. (All are Fuji Silysia Co., Ltd. product) is mentioned.
Colloidal silica is in the form of a liquid in which silica particles are dispersed in water or a solvent in the form of a colloid, but in the present invention, is included in the powder phase.

  Content of colloidal silica is 0.1-5 mass% in solid powder cosmetics of this invention, 0.5-5 mass% is more preferable, 1-5 mass% is still more preferable.

The powder phase containing colloidal silica preferably contains talc and / or mica, and more preferably contains talc and mica.
When the powder phase contains talc and / or mica, the total content of talc and / or mica is preferably 10 to 600 parts by mass with respect to 1 part by mass of the colloidal silica, It is more preferable that it is a mass part, and it is further more preferable that it is 20-80 mass parts.

  Moreover, when it contains talc and / or mica, the total content varies depending on the type of solid powder cosmetic, for example, when the solid powder cosmetic is a dark color type, the total of talc and / or mica The content is preferably 40 to 60 parts by mass with respect to 1 part by mass of the content of colloidal silica, and when the solid powder cosmetic is of a light color type, the total content of talc and / or mica is It is preferable that it is 20-65 mass parts with respect to 1 mass part of content of colloidal silica.

The dark or light color system in the solid powder cosmetic composition of the present invention means the lightness in L ^* a ^* b ^* color system obtained by a spectrocolorimeter (Spectro Color Meter SE2000, manufactured by Nippon Denshoku) It is defined by the numerical range of (L value). The dark color in the present invention means that the lightness (L value) on the surface of the pressed product after drying is 56 or less, and the light color means a color whose lightness (L value) is larger than 56.

  When the powder phase contains talc and mica, the content of talc / the content (mass ratio) of mica is preferably in the range of 1.2 to 15.

  Moreover, when talc and mica are included, the mass ratio varies depending on the type of solid powder cosmetic, for example, when the solid powder cosmetic is a light color type, the mass ratio is in the range of 5 to 12 When the solid powder cosmetic is a dark-colored one, the mass ratio is preferably in the range of 1.5 to 5.

In the powder phase, known powder components can be used as other cosmetic components.
As powders, for example, kaolin, sericite, alumina, glass flakes, calcium carbonate, magnesium carbonate, boron nitride, anhydrous silicic acid, barium sulfate, tar pigments for cosmetics, organic pigments, β-carotene, carsamine, carmine, chlorophyll, bengala Yellow iron oxide, black iron oxide, ultramarine blue, bitumen, various micas (natural and synthetic products), chromium oxide, carbon black, white pigments, pigments such as pearl pigments,
Inorganic powder such as aluminum powder, spherical nylon, spherical polystyrene, mica titanium, phlogopite iron, titanium dioxide, titanium oxide, iron oxide;
Examples include nylon powder, polyethylene powder, polymethyl methacrylate, wool powder, cellulose powder, silk powder, silicone powder, polyurethane powder, organic powder such as starch powder, and the like.

<Oil phase>
The oil phase is other than those contained in the powder phase among the known cosmetic components, and the following may be mentioned.
For example, hydrocarbon, squalane, liquid paraffin, light liquid isoparaffin, vaseline, solid paraffin, microcrystalline wax, ceresin, alkyd, acrylic, sulfonamide resin, nitrocellulose;
Mineral oil, olive oil, almond oil, cocoa butter, macadamia nut oil, avocado oil, hydrogenated palm oil, castor oil, sunflower oil, evening primrose oil, synthetic triglyceride, wax, sunflower seed wax, beeswax, carnauba wax, candelilla wax, lanolin, acetic acid Lanolin, higher fatty acid, higher alcohol, synthetic ester, linear / cyclic silicone oil, dimethylpolysiloxane, glycerin monostearate, decamethylcyclopentanesiloxane, polyoxyethylene modified dimethylpolysiloxane, octamethylcyclotetrasiloxane, polyphenylmethyl Siloxane, diphenylsiloxyphenyl trimethicone, dimethicone (30 CS), rosin pentaerythritto ester, neopentyl glycol diisooctanoate, triisooctale Oil such as glycerol, isopropyl myristate, propylene glycol monolaurate, diisostearate Dekagurijiseriru, tri (caprylic acid / capric acid) glyceryl;
Nonaqueous solvents such as ethanol, isopropanol, polyhydric alcohol, water-soluble polymer, bentonite, polyoxyethylene sorbitan monostearate, sorbitan sesquiisostearate, sorbitan isostearate, ethyl acetate, butyl acetate, butanol and the like can be mentioned.

  In the solid powder cosmetic composition of the present invention, the proportion of the total amount of the powder phase and the oil phase is preferably 70 to 85% by mass, more preferably 73 to 80% by mass, and the oil phase is the total Is the proportion of the remainder to 100% by mass.

The solid powder cosmetic of the present invention may contain other known cosmetic ingredients.
For example, a humectant such as glycerin, propylene glycol, sorbite, polyethylene glycol, dipropylene glycol, 1,3-butylene glycol, diglycerin, mannitol, POE methyl glycoside, biopolymer, sucrose and the like;
Emollient ingredients such as cetyl ethylhexanoate, diisostearyl malate, dipentaerythrityl tripolyhydroxystearate;
Quince seed, pectin, cellulose derivative, xanthan gum, sodium alginate, soagina, carboxyvinyl polymer;
Octyldodecyl myristate, neopentyl glycol diisooctanoate, sorbitan monooleate, glycerin triisooctoate, octyl methoxycinnamate, POE sorbitan monooleate, isocetyl isostearic acid, stearic acid, isopropyl palmitate, acetyl tributyl citrate, Trimethylpentanediyl dibenzoate, stearylconium bentonite;
Thickeners, preservatives, emulsifiers, stabilizers, plasticizers;
Anionic surfactants, cationic surfactants, nonionic surfactants, zwitterionic surfactants, protein surfactants;
Medicinal ingredients, vitamin C dipalmitate, vitamins, tocopherols, amino acids, skin lightening agents, fungicides;
pH adjuster, potassium hydroxide, sodium hydroxide, triethanolamine, magnesium stearate, zinc stearate, metal ion blocking agent, citric acid, sodium citrate, lactic acid, sodium lactate,
UV absorbers, antioxidants, fragrances, preservatives, chelating agents, antioxidants, dispersants, anti-browning agents, buffers, anti-settling components, gelling agents, organically modified clay minerals, usability modifiers, etc. Can be mentioned.

The solid powder cosmetic composition of the present invention is
A first step of mixing a powder phase containing colloidal silica and an oil phase to obtain a mixture;
A second step of preparing a slurry by mixing 30 to 70 parts by mass of water with respect to 100 parts by mass of the mixture;
It is obtained by the manufacturing method of solid powder cosmetics which has the 3rd process of drying after filling the above-mentioned slurry in a forming die.

<First step>
In this step, a powder phase containing colloidal silica and an oil phase are mixed to obtain a mixture.

  A powder phase is prepared by stirring and mixing colloidal silica and a powder component in a known cosmetic component with a mixer or the like.

  An oil phase consisting of a known cosmetic component (excluding the powder contained in the powder phase) is added to a mixer or the like containing the powder phase, and this step is carried out by stirring and mixing until uniform. A mixture of

Second step
In this step, preferably 30 to 70 parts by mass of water as a dispersion medium is added to 100 parts by mass of the mixture obtained in the previous step and mixed to prepare a slurry.
The mixture obtained in the previous step is preferably filtered with a 20-mesh filter cloth or the like.

Water is added to the mixture obtained in the previous step and mixed again with a mixer or the like to prepare a slurry. The water used is preferably purified water from the viewpoint of hygiene.
The amount of water added to prepare the slurry is preferably 30 to 70 parts by mass, more preferably 40 to 60 parts by mass with respect to 100 parts by mass of the mixture.

<Third step>
In this step, the slurry obtained in the previous step is filled in a mold and then dried to obtain a solid powder cosmetic.

  The mold for filling the slurry uses a mold for solid powder cosmetic usually used, such as a mold or a resin dish.

  The method of filling the slurry may be the method of injecting the slurry from the opening of the mold, or covering the upper mold (mold) on the opening of the mold which is the mold and then on the bottom or side of the dish. It is possible to use a BIM method in which the slurry is filled from the provided filling holes and the filled slurry is press-formed by the upper die.

The slurry filled in the mold is put into a dryer and the like together with the mold, and the solvent in the water and the cosmetic component is removed by heating and drying. In the case of using the BIM method, the slurry is filled and pressed into a metal plate, placed in a dryer or the like.
The heating temperature is preferably 40 ° C. or more, more preferably 50 ° C. or more, and the heat is dried until the slurry is completely solidified.
The water used in the slurry preparation in the previous step and the water contained in each cosmetic component including colloidal silica are removed by heating and drying in this step, so the solid powder cosmetic of the present invention is mostly water Does not contain

  The slurry prepared by the method for producing a solid powder cosmetic of the present invention has high fluidity, and the filling method by the BIM method is suitable. Therefore, a solid powder cosmetic provided with a pattern is obtained by using the upper surface of the cosmetic dish which is engraved with a reverse pattern of the cosmetic surface pattern or the three-dimensional shape as the upper surface to cover the opening of the gold plate which is the type Can.

  The cosmetic of the present invention can be made into the above-mentioned powder cosmetic, particularly an eye shadow, foundation, teak, powdered white powder and the like.

Ingredients used Silica 1: Colloidal silica, product name "Cylysia 740", Comparative component manufactured by Fuji Silysia Co., Ltd. Silica 2: Spherical silica obtained by wet sedimentation method, product name "Sunsphere H51", manufactured by AGC S ITEC Co., Ltd. Silica 3: fumed silica obtained by a dry method, product name "Aerosil 200", manufactured by Nippon Aerosil Co., Ltd.

<Method for producing solid powder cosmetic>
(1) After the components shown in the powder phase of Table 1 are mixed by a mixer, the components shown in the oil phase of Table 1 are added to the powder phase in the mixer, and the components are stirred and mixed. The mixture was prepared.
(2) After passing 100 g of the mixture of the previous step through a 20-mesh filter cloth, 50 parts by mass of water was added and uniformly mixed with a mixer to prepare a slurry.
(3) The above-mentioned slurry was press-molded in a gold dish by the BIM method. Here, the BIM method refers to a method of press-molding after the slurry is filled from the filling holes in the bottom or side portion of the plate (molding die) set in the press die. Then, it was made to dry with a drier at 50 ° C. for 20 hours together with a gold dish to obtain a solid powder cosmetic shown in Table 1.
The following were evaluated using the obtained solid powder cosmetic.

Slurry stability The slurry immediately after preparation was visually observed and evaluated according to the following criteria.
○: Not separated even after standing at room temperature (20 to 25 ° C.) for 10 hours or more.
Fair: Not separated even if left to stand within 30 minutes at room temperature (20 to 25 ° C.).
X: It separated immediately.

Press Formability The appearance of a press-formed product (solid powder cosmetic) immediately after press-molding in a gold dish by BIM method and after drying was visually observed and evaluated according to the following criteria.
○: No cracks or cracks were found in the press-formed product.
Fair: No cracks or cracks were observed in the press-formed product, but the appearance (slurry flow unevenness marks, etc.) is inferior.
X: A crack or a crack was confirmed in the press-formed product.

Drop strength of press molded product (solid powder cosmetic) Each solid powder cosmetic shown in Table 1 in a gold dish is dropped from a height of 30 cm onto a floor (concrete floor) in a state of being mounted on a compact The following criteria evaluated.
:: The surface of the press-formed product (solid powder cosmetic) was normal even when dropped five times.
X: When dropped 1 to 4 times, cracks or cracks were observed on the surface of the press-formed product (solid powder cosmetic).
"-" Was not evaluated because the press formability was inferior.

The solid powder cosmetic of Examples 1 to 5 uses colloidal silica and is excellent in slurry stability and press moldability, and the surface of the solid powder cosmetic even when dropped in a mold. There were no cracks or cracks in the
Comparative Examples 4 and 5 using spherical silica and fumed silica were not suitable as solid powder cosmetics which can adopt the BIM method because the slurry stability and press-formability are low.
Moreover, also in Comparative Examples 1 to 3 in which silica was not used, the slurry stability and the press formability were inferior, and they were not suitable as a solid powder cosmetic which can adopt the BIM method.

According to the method for producing a solid powder cosmetic of the present invention, a stable solid powder cosmetic can be obtained regardless of the color density of the cosmetic.
Table 2 shows dark eye shadow (Formulation Example 1) and light color eye shadow (Formulation Example 2).

  The solid powder cosmetic composition of the present invention can be suitably used as eye shadow, foundation, teak, powdered white powder and the like.

Claims (7)

  A solid powder cosmetic containing a powder phase containing colloidal silica and an oil phase, wherein the solid powder cosmetic contains 0.1 to 5% by mass of the colloidal silica.   The solid powder cosmetic according to claim 1, wherein the proportion of the total amount of the powder phase and the oil phase is 70 to 85% by mass of the powder phase and the balance is the oil phase.   The solid powder according to claim 1 or 2, wherein the powder phase further contains talc and mica, and the total content of talc and mica is 10 to 600 parts by mass with respect to 1 part by mass of the colloidal silica. Body cosmetics.   The powder phase further contains talc and mica, and the content ratio of the talc and the mica content (content ratio of the talc / content ratio of the mica) is in a range of 1.2 to 15 The solid powder cosmetic according to any one of claims 1 to 3. It is a manufacturing method of solid powder cosmetics according to any one of claims 1 to 4,
A first step of mixing a powder phase containing colloidal silica and an oil phase to obtain a mixture;
A second step of preparing a slurry by mixing 30 to 70 parts by mass of water with respect to 100 parts by mass of the mixture;
The manufacturing method of the solid powder cosmetics which have the 3rd process of drying after filling the said slurry in a shaping | molding die.   The method for producing a solid powder cosmetic according to claim 5, wherein the third step is a step of press-molding and drying after filling the slurry in a forming die.   The method for producing a solid powder cosmetic according to claim 5 or 6, wherein the back injection molding method is performed in the third step.