JP6799242B2 - Cosmetics - Google Patents

Description

The present invention relates to cosmetics suitable as powder cosmetics, make-up cosmetics and the like.

Conventionally, spherical powder has been blended as a component that adds a smooth and smooth feel to cosmetics, but various treatments have been attempted because the shielding effect is weak and it may cause makeup to come off (for example). , Patent Documents 1 and 2).

In addition, there is a problem that whitening becomes conspicuous especially under strong light or when taking a picture due to the refraction and retroreflection of the light of the spherical powder. However, a method of improving the shielding force and the refraction and retroreflection of light by including white powder has been shown (see, for example, Patent Document 3).
Further, as a solution to the problem of Patent Document 3, a cosmetic containing a transparent to translucent organic synthetic spherical powder containing a powder has been proposed (Patent Document 4).

Japanese Unexamined Patent Publication No. 1-180811 Japanese Unexamined Patent Publication No. 9-169626 Japanese Unexamined Patent Publication No. 2004-67624 Japanese Unexamined Patent Publication No. 2008-1678

An object of the present invention is to provide a cosmetic having a natural finish and having a high effect of concealing spots and pores.

The present invention provides a cosmetic containing composite particles made of polyurethane powder containing a silicone resin powder.

The cosmetic of the present invention is particularly suitable as a powder cosmetic or a make-up cosmetic because it has an excellent effect of making facial spots and pores inconspicuous.

An SEM photograph (3000 times) of the composite particles obtained in Production Example 2. Production Example 2 The figure which shows the measurement result of the reflection level with respect to a specific wavelength (blue, yellow, red) of the obtained composite particle.

<Composite particles>
The composite particles used in the cosmetics of the present invention consist of polyurethane powder containing a silicone resin powder.
In the present invention, "inclusion" means that the silicone resin powder is contained in the polyurethane powder. Since the "encapsulation" is based on the production of the polyurethane powder containing the silicone resin powder, the polyurethane powder containing the silicone resin powder rubs against each other during the production of cosmetics and the like to form the silicone resin. Even when the powder is exposed, it will be contained in the polyurethane powder containing the silicone resin powder of the present invention.

Polyurethane is known, and can be obtained, for example, by reacting an isocyanate compound with a polyol described in JP-A-2010-163389, JP-A-2012-219221, and JP-A-2016-199532.

As the silicone resin powder, those known as cosmetic ingredients can be used.
Examples of the silicone resin powder known as a cosmetic ingredient include "(b) Silicone skeleton powder" described in JP2013-63954A and "(B)" described in JP2012-240994. ) Crosslinked organopolysiloxane polymer ”, silicone-based resin in“ (C) oil-soluble resin ”in Japanese Patent Application Laid-Open No. 2013-227306 can be used, and among these, polymethylsilsesquioxane Powder is preferred.
Polymethylsilsesquioxane powder includes silicone KMP-590 (manufactured by Shin-Etsu Chemical Co., Ltd .; particle size 1-3 μm), Tospearl 120A, Tospearl 145A, Tospearl 2000B (manufactured by Momentive Performance Materials Japan), etc. Commercially available products can be used.

The content ratio of the silicone resin powder in the total 100% by mass of the silicone resin powder and the polyurethane powder in the composite particles is preferably 2 to 13% by mass, more preferably 4 to 10% by mass, and the balance ratio is the polyurethane powder.

The average particle size (d50; laser diffraction / scattering method) of the composite particles is preferably 5 to 80 μm, more preferably 10 to 50 μm.
The particle size of the silicone resin powder contained in the composite particles is preferably 0.1 to 1.0 μm, more preferably 0.4 to 0.6 μm.

The composite particles can contain known cosmetic ingredients and powders used within a range that can solve the problems of the present invention.
Examples of the powder used with the known cosmetic ingredient include various inorganic pigments and organic pigments.
The content ratio when the powder is contained is preferably 5% by mass or less, more preferably 3% by mass or less, still more preferably 1% by mass or less in the composite particles.

The composite particles may or may not be spherical, but those having a spherical shape are preferable. "Spherical" means that the ratio of the major axis to the minor axis (minor axis / major axis or major axis / minor axis) is about 0.8 to 1.2.

When a composite particle is irradiated with blue wavelength light (450 nm) and red wavelength light (700 nm) with the same intensity, it must be able to absorb blue light more strongly and reflect red light more strongly. Is preferable.

Composite particles can be produced by adding silicone resin powder during the polymerization reaction of polyurethane and causing the polymerization reaction.

<Cosmetics>
The cosmetic of the present invention contains the above-mentioned composite particles.
The cosmetic of the present invention can contain various components generally blended in the cosmetics listed below, depending on the dosage form.
Hydrocarbons, squalane, liquid paraffin, petrolatum, solid paraffin, microcrystalline wax, ceresin, alkyd, acrylic, sulfonamide resin, nitrocellulose;
Mineral oil, olive oil, almond oil, cacao butter, macadamia nut oil, avocado oil, hardened palm oil, sunflower oil, sunflower oil, evening primrose oil, synthetic triglyceride, wax, sunflower seed wax, honey wax, carnauba wax, candelilla wax, lanolin, acetate Lanorin, higher fatty acids, higher alcohols, synthetic esters, linear / cyclic silicone oil, dimethylpolysiloxane, glycerin monostearate, decamethylcyclopentanesiloxane, polyoxyethylene modified dimethylpolysiloxane, octamethylcyclotetrasiloxane, polyphenylmethyl Oils such as siloxane, rosinpentaerythritot ester, neopentyl glycol diisooctanoate, glycerin triisooctanoate, isopropyl myristate, propylene glycol monolaurate, glyceryl tri (caprylic acid / capric acid);

Purified water, ethanol, isopropanol, polyhydric alcohol, water-soluble polymer, bentonite, polyoxyethylene sorbitan monostearate, sorbitan sesquiisostearate, ethyl acetate, butyl acetate, butanol;
Moisturizers such as glycerin, propylene glycol, sorbitol, polyethylene glycol, dipropylene glycol, 1,3-butylene glycol, diglycerin, mannitol, POE methylglycoside, biopolymers, sucrose;
Emollient components such as cetyl ethylcaproate, diisostearyl malate, dipentaerythrityl tripolyhydroxystearate;
Quince seeds, pectin, cellulose derivatives, xanthan gum, sodium alginate, soagina, carboxyvinyl polymers;
Octyldodecyl myristic acid, neopentyl glycol diisooctanoate, sorbitan monooleate, glycerin triisooctate, octylmethoxycinnamate, POE sorbitan monooleate, isosetyl, isostearic acid, stearic acid, isopropyl palmitate, acetyltributyl citrate, Trimethylpentanediyl dibenzoate, stearylconium bentonite ;,
Thickeners, preservatives, emulsifiers, stabilizers, plasticizers;
Anionic Surfactants, Cationic Surfactants, Nonionic Surfactants, Amphoteric Surfactants, Protein Surfactants;

Medicinal ingredients, vitamin C dipalmitate, vitamins, amino acids, whitening agents, bactericides;
Tarku, kaolin, mica, sericite, alumina, silica, glass flakes, calcium carbonate, magnesium carbonate, silicic anhydride, barium sulfate, cosmetic tar pigments, organic pigments, β-carotene, calsamine, carmine, chlorophyll, red iron oxide, yellow oxidation Pigments such as iron, black iron oxide, ultramarine, dark blue, chromium oxide, carbon black, white pigments, pearl pigments,
Nylon powder, polyethylene powder, polymethyl methacrylate, wool powder, cellulose powder, silk powder, silicone powder, starch powder, aluminum powder, spherical nylon, spherical polystyrene, mica titanium, titanium dioxide, titanium oxide, iron oxide, and other powders. body;
Acidity regulator, potassium hydroxide, sodium hydroxide, triethanolamine, magnesium stearate, zinc stearate, metal ion encapsulant, citric acid, sodium citrate, lactate, sodium lactate,
UV absorbers, antioxidants, fragrances, preservatives, chelating agents, antioxidants, dispersants, browning agents, buffers, anti-precipitation ingredients, gelling agents, organically modified clay minerals, usability modifiers.

The cosmetic of the present invention can be used in various forms such as powder, aerosol, liquid, gel, cream, foam, mousse, paste, etc. Among these, powder cosmetics. (Powder cosmetic) is preferable.
Powder cosmetics include both pressed powder (solid) and loose powder (powder).
Specific examples include body powder, face powder, foundation, cheek, eye shadow, eyebrow, powder white powder, baby powder and the like.

The cosmetics of the present invention include cosmetics other than the powder cosmetics, such as base control cosmetics such as lotions, creams, gels and oils, aerosol preparations such as antiperspirants, lip creams, lipsticks and eyeliners. It can be used as make-up cosmetics such as mascara, nail enamel, lipsticks such as nail treatments, sunscreen cosmetics, packs, etc., but make-up cosmetics are preferable.

Production Example 1 (Production of polyurethane component)
In a 2L autoclave sufficiently replaced with nitrogen gas and dried, 854 g of Praxel 308 (polyester polyol, number average molecular weight 800, number of functional groups 3, manufactured by Daicel Chemical Industry Co., Ltd.) and 1008 g of hexamethylene diisocyanate were charged, and further nitrogen gas was added. After sufficiently replacing the upper part with, the mixture was sealed, and the mixture was stirred and mixed at 120 ° C. for 20 hours for reaction.
Then, unreacted hexamethylene diisocyanate was removed under reduced pressure, and then toluene was added to bring the non-volatile content to 90% by mass. As a result, a synthetic product (I) containing 8.1% by mass of an isocyanate group was obtained.

Production Example 2 (Production of composite particles)
The compound (I) obtained in Production Example 1 (310 g), toluene (85 g), and MSP-N050 (polymethylsilces oxane, Nikko Rica Co., Ltd., particle size 0.4 to 0.6 μm) (22.5 g) were prepared. These were placed in a reactor and mixed to prepare raw materials.
Separately, 600 g of water was placed in a separable flask equipped with a 2 L stirrer, and 18.0 g of Metrose 90SH-100 (hydroxypropyl methylcellulose, manufactured by Shin-Etsu Chemical Co., Ltd.) was dissolved therein to prepare a dispersion medium.
Raw materials were added while stirring the dispersion medium at 400 r / m to prepare a suspension.
Next, the suspension was heated to 50 ° C. under continuous stirring and reacted at the same temperature for 3 hours.
Then, the temperature was raised to 60 ° C., the reaction was carried out at the same temperature for 2 hours, the temperature was further raised to 95 ° C., and the mixture was kept at the same temperature for 1 hour for aging. Then, it was cooled to room temperature, solid-liquid separated, washed thoroughly with water, and dried at 70 ° C. for 20 hours to obtain spherical composite particles.
The composite particles are 92.5% by mass of a polyurethane component and 7.5% by mass of a silicone resin component (polymethylsilces oxane) (based on raw materials).

An SEM photograph (3000 times) of the obtained composite particles is shown in FIG.
It was confirmed that small particles of the silicone resin (polymethylsilces oxane) were dispersed and present in the layer on the surface side of the composite particles.

Test Example 1
The particle size distribution (d50) of the composite particles is 18.1 μ \ ochm, the true specific gravity is 1.16, the refractive index is 1.5, and the oil absorption (method described in paragraph 0039 of JP-A-2017-48323) is 63. .2 ml / 100 g, bulk specific gravity was 0.39 g / ml.

Test Example 2 (micro compression test)
Using a microcompression tester (MCT-W500, manufactured by Shimadzu Corporation), the pressure until the diameter was deformed by 10% and 30% with respect to one composite particle was measured. The smaller the number, the softer the particles.
The compressibility and restoration rate when a test force of 9.8 mN was applied to one particle of the sample were measured to evaluate the impact resilience. The diameter of the particles was set to 100%, the compression ratio was measured by the rate of deformation of the particles, and the restoration rate was measured by the ratio of restored particle diameter. It is shown that the powder has rebound resilience as the ratio of compression rate and restoration rate is equal.
For comparison, a polyurethane powder produced in the same manner was used except that a silicone resin (polymethylsilces oxane) was not used. The results are shown in Table 1.

Test Example 3
The composite particles were measured with a variable-angle spectrophotometer (manufactured by Color Techno System Co., Ltd.), and the degree of reflection on blue (450 nm), yellow (580 nm), and red (700 nm) is shown in the graph of FIG.
As is clear from FIG. 2, the reflection of the light of the red wavelength and the light of the yellow wavelength was large, and the reflection of the light of the blue wavelength was small (that is, the absorption of the light of the blue wavelength was the largest).

A powdery cosmetic was prepared below, and each of the following items was tested and evaluated.
(1) Natural Finish Evaluation Each powdery cosmetic of Examples and Comparative Examples was applied to the face surface of a panelist of cosmetics evaluation, and 6 hours later, the applied surface was visually observed.
The evaluation was based on the following criteria for a natural finish and a natural feeling (transparency).

◎: Very good ○: Good △: Normal ×: Bad

(2) Evaluation of Hiding Effect of Spots and Pore The powdery cosmetics of Examples and Comparative Examples were applied to the face surface of a panelist for cosmetic evaluation, and the applied surface was visually observed 6 hours later.
The evaluation was based on the following criteria to determine whether stains and pores were inconspicuous.

◎: Very good ○: Good △: Normal ×: Bad

(3) Evaluation of Good Spreadability When the powdered cosmetics of Examples and Comparative Examples were applied to the face surface of the panelists of the cosmetics evaluation, the ease of application was evaluated according to the following criteria.

◎: Very good ○: Good △: Normal ×: Bad

(4) Evaluation of usability (softness) The usability (softness) when each of the powdered cosmetics of Examples and Comparative Examples was applied to the face surface of a panelist for cosmetic evaluation was evaluated according to the following criteria.

◎: Very good ○: Good △: Normal ×: Bad

Example 1, Comparative Example 1 (A, B) (Liquid Foundation)
The components 1 to 11 shown in Table 2 were weighed and placed in a container, and then mixed and dissolved.
Next, 12 to 20 previously mixed and dispersed were added to the container containing the mixture of 1 to 11 and mixed and dispersed.
Next, 21 to 24 previously mixed and dissolved were slowly added and emulsified by an emulsifier. Then, it was cooled to obtain an emulsion which became a liquid foundation.
The unit of the numerical value shown in Table 2 is% by weight.

Example 2, Comparative Example 2 (A, B) (powder foundation)
The components 1 to 9 shown in Table 3 were weighed and placed in a high-speed mixer for mixing and dispersing.
Next, 10 shown in Table 3 was added and mixed and dispersed, and then transferred to a dish and compression molded to obtain a powder foundation.
The unit of the numerical value shown in Table 3 is% by weight.

Example 3, Comparative Example 3 (A, B) (white powder)
The components 1 to 9 shown in Table 4 were weighed and placed in a high-speed mixer for mixing and dispersing.
Next, 10 shown in Table 4 was added to obtain a powdered white powder mixed and dispersed.
The unit of the numerical value shown in Table 4 is% by weight.

The cosmetic of the present invention can be suitably used as a powder cosmetic or a make-up cosmetic.

Claims (5)

A cosmetic containing composite particles composed of polyurethane powder containing a silicone resin powder. The cosmetic according to claim 1, wherein the silicone resin powder contained in the composite particles contains a polymethylsilsesquioxane powder. The cosmetic according to claim 1 or 2, wherein the composite particles contain 2 to 13% by mass of the silicone resin powder in the total amount of the silicone resin powder and the polyurethane powder. When the composite particles irradiate blue wavelength light (450 nm) and red wavelength light (700 nm) with the same intensity, they can absorb blue light more strongly and reflect red light more strongly. , The cosmetic according to any one of claims 1 to 3. The cosmetic according to any one of claims 1 to 4, which is a powder cosmetic or a make-up cosmetic.