JP2019172600A - Surface-treated powder and cosmetics containing the same - Google Patents

Abstract

To provide surface-treated powders that are excellent in adhesion to the skin and usability independently from synthetic high polymer, and to provide cosmetics compounded with the surface-treated powders.SOLUTION: By coating a spherical calcium carbonate powder having an average particle size of 200 μm or less with a wax having a solid ester bond having a melting point of 40°C or higher, we found a surface-treated powder with excellent adhesion to the skin and usability, furthermore, resulting in providing a cosmetic compounded with the surface-treated powder.SELECTED DRAWING: None

Description

  The present invention relates to a surface-treated powder having excellent usability and adhesion to the skin and a cosmetic containing the powder.

In cosmetics, various powders are used as cosmetic powders, and surface treatment is performed with various compounds as needed according to the purpose of use. In addition, research on spherical powders has been conducted for the purpose of improving the feel of cosmetics, making light pores inconspicuous, and improving lubricity during filling.
Conventionally, as the proposed spherical powder for cosmetic use, for example, acrylic resin, polyurethane resin, silica powder, spherical crystallized cellulose and the like are used. (Patent Documents 1 to 4)
However, since these spherical powders are synthetic polymers, they are not always satisfactory because they cause river pollution, and even those that are not synthetic polymers have a problem in use.

  In order to solve this, Patent Document 5 proposes a technique of blending a natural plant-derived sucrose fatty acid ester compound into cosmetics. According to the cosmetic described in this document, by blending the lipophilic ester wax, the adhesion of the cosmetic to the skin is hardly inhibited by secretions such as sweat and sebum, and excellent in water resistance and durability. Cosmetics can be obtained. However, since the technique proposed in Patent Document 5 is not a technique for imparting properties due to ester wax to the powder itself, it is difficult to apply to powder foundations or loose powders. There remains a problem with adaptation to cosmetics.

JP 2011-126951 A JP 05-239340 A Japanese Patent Application Laid-Open No. 06-064915 Japanese Patent Laid-Open No. 06-136175 JP-A-08-081331

  An object of the present invention is to provide a surface-treated powder that does not depend on a synthetic polymer compound having excellent adhesion to the skin and a feeling of use, and a cosmetic containing the surface-treated powder.

  As a result of diligent research, the inventors of the present invention surface-treated wax having a solid ester bond having a melting point of 40 ° C. or more on spherical calcium carbonate powder having a particle size of 200 μm or less, thereby improving adhesion to the skin. In addition, the inventors have found that a surface-treated powder having excellent usability can be obtained, and that the powder can be easily blended into cosmetics, thereby completing the present invention.

According to the present invention, it is possible to provide a spherical powder having a good feel without using a synthetic polymer. The surface-treated powder of the present invention is excellent in miscibility with various powders used in cosmetics, unlike the conventional method of separately using powders and waxes having ester bonds. In addition, it is possible to provide a highly functional cosmetic, a manufacturing method thereof, and a cosmetic such as a powder foundation or a loose powder which is blended with the surface-treated powder and hardly contains a wax component.
The effect of the present invention is that the friction coefficient is reduced by the wax treated on the spherical calcium carbonate, and since the calcium carbonate surface has a high pH, the ester bond of the wax is partially decomposed to form a fatty acid calcium salt. Sawa effect is given.

Hereinafter, the surface-treated powder of the present invention will be described in detail.
The surface-treated powder of the present invention is a powder obtained by coating a synthetic spherical calcium carbonate powder having a particle diameter of 200 μm or less with a wax having a solid ester bond having a melting point of 40 ° C. or higher.

As the powder used in the present invention, a known powder can be used as long as it is spherical calcium carbonate having a particle size of 200 μm or less, its polymorph (calcite, meteorite, vaterite, squid eye, etc.), and particle structure (Porous, non-porous, etc.) does not matter. When the particle diameter exceeds 200 μm, the wax ester does not cover well, and the feeling of use at the time of blending cosmetics is significantly reduced.
The spherical calcium carbonate that can be used in the present invention is not particularly limited. For example, HPC-S (spherical vaterite) manufactured by Hokkaido Calcifying Industry Co., Ltd., Callite-SA (spherical calcite) manufactured by Shiroishi Kogyo Co., Ltd., and new lime. NL-QC10, NL-QC20 (spherical calcite), etc. can be used, and can be prepared according to the method of JP-A-2002-160918.

As the wax used in the present invention, a known wax can be used as long as it is a solid having an ester bond having a melting point of 40 ° C. or higher, and the type of functional group and the number of carbon atoms are not limited. Those with a melting point lower than 40 ° C may solidify the formulation itself when blended into cosmetics, and wax-like hydrocarbons and amide compounds are also known, but these do not react with the calcium carbonate surface, so these In the case of this compound, characteristics due to surface treatment cannot be obtained.
The wax having an ester bond used in the present invention is not particularly limited, and examples thereof include the following substances. Various hardened oils, triacylglycerols such as beef tallow, lard, goose wax, urushi wax, hardened jojoba oil, carnauba wax, candelilla wax, sugar cane wax, beeswax, γ-oryzanol, sorbitan fatty acid ester, sucrose fatty acid ester, Examples include polyethylene glycol fatty acid ester, polyoxyethylene hydrogenated castor oil, NIKKOL MM (myristyl myristate) of Nikko Chemicals, NIKKOL N-SPV (cetyl palmitate), and the like. These waxes may be used alone or in combination of two or more.

It is an object of the present invention to obtain a powder having both the adhesion to the skin and the feeling of use, which is not obtained in the prior art, regardless of the polymer compound, by surface-treating the wax component having an ester bond. . Although it does not restrict | limit about a surface treatment amount, it is preferable that the surface treatment component of this invention is 0.1-50 mass parts with respect to 100 mass parts of base material powder.
In general, there are two methods for treating the surface of the base powder using a surface treating agent, a wet method and a dry method. In the wet method, the substrate powder is dispersed in a solvent or water / solvent solution, and while stirring, a wax melted by heating or diluted with a solvent is added, uniformly coated, filtered and dried. A treated powder is obtained. In the dry method, a base powder is added to a Henschel mixer, a ball mill or the like, a wax melted by heating is added, and after mixing well, dried and cooled to obtain a treated powder.

Furthermore, in the surface treatment of the base powder according to the present invention, a surface treatment agent other than the wax having an ester bond is simultaneously or continuously surface-treated on the base powder within a range not impairing the effects of the present invention. be able to. Silicone compounds such as hydrogen silicone, amino silicone, reactive organopolysiloxane, alkylsilane, organic titanate, polyolefin, lecithin and / or salt thereof, lecithin such as hydrogenated lecithin and / or salt thereof, acylated amino acid and / or Alternatively, salts thereof, acidic ester oils, fatty acids and / or salts thereof, dextrin fatty acid esters, fructooligosaccharide fatty acid esters, collagen, higher alcohols, metal soaps and the like can be mentioned, but the invention is not limited thereto.
Although the usage-amount of these surface treating agents is not limited, It is preferable to use it to such an extent that the characteristic of the surface treating agent of this invention is not impaired. Preferably, it is about 0.1 to 20% by mass.

Next, the cosmetic of the present invention will be described in detail.
The cosmetic of the present invention contains the above-mentioned surface-treated powder of the present invention, and its dosage form is arbitrary, and generally includes all cosmetics containing conventional cosmetic powders. Examples of such cosmetics include facial cosmetics such as foundations, concealers, white powders and blushers, makeup cosmetics such as eye shadows, mascaras, eyeliners, eyebrows, lipsticks, nail enamels, sunscreen cosmetics, and emulsions. And basic cosmetics such as lotions. In addition to cosmetics, it can also be suitably used for external preparations for skin, ointments for pharmaceutical use and the like.
The compounding quantity of the surface treatment powder of this invention is 0.01-99.9 mass% normally, and it fluctuates | varies according to the form and target use of cosmetics. In order to blend other components such as a fragrance as a cosmetic and to obtain a sufficient feeling of use, the blend amount of the surface-treated powder is preferably in the range of 0.1 to 90% by mass. More specifically, depending on the type of cosmetic, for example, 1 to 80% by mass for solid powder cosmetics, 0.1 to 20% by mass for cream cosmetics, and 0.1 to 0.1% for milky cosmetics. It is more preferable to add 0.1 to 10% by mass to 10% by mass and lotions.

Components other than the surface-treated powder according to the present invention that can be blended in the cosmetics of the present invention are appropriately selected and used from the components blended in normal cosmetics, depending on the type of the target cosmetics. be able to. Examples of these components include hydrocarbons such as liquid paraffin and petrolatum, vegetable oils and fats, waxes, synthetic ester oils, silicone oil phase components, fluorine oil phase components, higher alcohols, lower alcohols, and fatty acids. , Thickener, ultraviolet absorber, powder, inorganic / organic pigment, colorant, various surfactants, polyhydric alcohol, sugar, polymer compound, physiologically active ingredient, transdermal absorption promoter, solvent, antioxidant , Fragrances, preservatives, various additives and the like, but are not limited thereto.
The cosmetic of the present invention can be produced according to a usual method. A cosmetic containing the cosmetic powder of the present invention has a smooth feel when applied onto the skin, excellent adhesion, and can give a moist feeling of use.
EXAMPLES The present invention will be specifically described below with reference to examples, but the technical scope of the present invention is not limited to these examples.

<Example 1>
1. Preparation of manifestation-treated powder (Manufacture of surface-treated powder 1)
Put 970 g of spherical calcium carbonate (NL-QC10, manufactured by New Lime) into a Henschel mixer, add 30 g of sucrose fatty acid ester (polystearic acid sucrose, product name: Sugar Wax S-10E, manufactured by Daiichi Kogyo Seiyaku) and add 80 Stir at 30 ° C. for 30 minutes. After 30 minutes, the product was gradually cooled to room temperature with stirring, and passed through an 80 mesh screen to obtain the product 1 of the present invention.
(Manufacture of surface-treated powder 2)
In a beaker, 97.0 g of spherical calcium carbonate (NL-QC10, manufactured by New Lime) was weighed, 300 g of ethanol and sucrose fatty acid ester (sucrose polystearate, product name: Sugar Wax S-10E, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) 3 g was added, and the mixture was stirred for 30 minutes under heating and reflux. After 30 minutes, the mixture was gradually cooled to room temperature with stirring, and after filtration, the powder obtained was dried under reduced pressure and pulverized with an atomizer to obtain Product 2 of the present invention.
(Manufacture of surface-treated powder 3)
Put 970 g of spherical calcium carbonate (NL-QC10, manufactured by New Lime) into a Henschel mixer, add 30 g of various solid esters (hardened castor oil, carnauba wax, sorbitan fatty acid ester, cetyl palmitate) and stir at 80 ° C. for 30 minutes. did. After 30 minutes, the mixture was gradually cooled to room temperature with stirring, and passed through an 80 mesh screen to obtain products 3 to 6 of the present invention.

(Manufacture of comparative products 1)
Add 970 g of spherical silica (HPS-3500, manufactured by Toagosei Co., Ltd.) to a Henschel mixer, and add 30 g of sucrose fatty acid ester (polystearic acid sucrose, product name: sugar wax S-10E, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) to 80 Stir at 30 ° C. for 30 minutes. After 30 minutes, the mixture was gradually cooled to room temperature with stirring, and passed through an 80 mesh screen as Comparative Product 1.
(Manufacture of comparative products 2)
To a Henschel mixer, 970 g of spherical calcium carbonate (NL-QC10, manufactured by New Lime) was added, 30 g of a wax component that was not an ester was added, and the mixture was stirred at 80 ° C. for 30 minutes. After 30 minutes, the mixture was gradually cooled to room temperature with stirring, and passed through an 80 mesh screen to make comparative products 2-3.

2. Evaluation method (adhesiveness) With five monitors, the sample was evenly rubbed on the inner side of the upper arm, and when it was scraped with a brush, it was visually observed and evaluated with the following five points. The average was calculated.
5: Adhesion better than untreated powder 4: Relatively better adhesion than untreated powder 3: Same as untreated powder 2: Easier to break than untreated powder 1: Not yet The smoothness at the time of application was evaluated by the following five points score by five monitors that were much easier to break than the treated powder (feel), and the average was obtained.
5: Much better than untreated powder 4: Better than untreated powder 3: Same as untreated powder 2: Relatively inferior to untreated powder 1: Much worse than untreated powder

3. Evaluation results Table 1 shows the evaluation results. A good powder excellent in feel and adhesion was obtained by using either a dry surface treatment or a wet surface treatment.
As shown in comparative products 1 to 3, when calcium carbonate is not used or when a wax that does not have an ester bond is used, the result is that the feel is extremely inferior and the adhesiveness is inferior compared to the newly developed product. It was.

<Example 2>
1. Manufacturing method (manufacture of surface treatment agent 4)
Arbitrary mass% of various solid esters was added to 100% by mass of spherical calcium carbonate (NL-QC10, manufactured by New Lime Co.) in a Henschel mixer, and the mixture was stirred at 80 ° C. for 30 minutes. After 30 minutes, the mixture was gradually cooled to room temperature with stirring, and passed through an 80 mesh screen to make products 7 to 15 of the present invention.

2. Evaluation method (adhesiveness) With five monitors, the sample was evenly rubbed on the inner side of the upper arm, and when it was scraped with a brush, it was visually observed and evaluated with the following five points. The average was calculated.
5: Adhesion better than untreated powder 4: Relatively better adhesion than untreated powder 3: Same as untreated powder 2: Easier to break than untreated powder 1: Not yet The smoothness at the time of application was evaluated by the following five points score by five monitors that were much easier to break than the treated powder (feel), and the average was obtained.
5: Much better than untreated powder 4: Better than untreated powder 3: Same as untreated powder 2: Relatively inferior to untreated powder 1: Much worse than untreated powder

3. Evaluation results Table 2 shows the evaluation results. Regardless of the ratio of calcium carbonate and various solid esters, good powders excellent in feel and adhesion were obtained.

<Example 3>
Makeup base (prescription) (mass%)
A Water balance Glycerin 5.0
Stearoxy PG hydroxy PG hydroxyethyl
Sodium sulfonate 2.0
B Perfluoroalkyl (C4-14) ethoxydimethicone 13.0
Cyclomethicone 10.0
Dimethicone 6.0
Octyl methoxycinnamate 4.0
Ethanol 3.0
Isostearyl glycerin 3.0
1,3-butylene glycol 2.0
Carbomer (4% aqueous solution) 2.0
Invention product 1 4.0
Silicone-treated titanium oxide 2.0
Silicone treated bengara 0.5
Silicone-treated yellow iron oxide 1.5
Silicone-treated black iron oxide 0.1
(Preparation method) If phase A was stirred with a homomixer at room temperature, phase B was added and emulsified.
(Results) SPF30 / PA ++, a makeup base with good adhesion to the skin and good elongation was obtained.

<Example 4>
Powder foundation (prescription) (mass%)
A Silicone-treated sericite The remainder Silicone-treated talc 15.0
Silicone-treated sericite 10.0
Invention product 1 10.0
B Dimethicone 7.0
Isocetyl myristate 5.0
Octyl methoxycinnamate 5.0
(Diphenyl Dimethicone / Vinyl Phenyl Dimethicone /
Silsesquioxane) Crosspolymer 3.0
Tri (capryl / capric acid) glyceryl 3.0
Hydrogenated polyisobutene 3.0
(Preparation method) The component B was mixed well, the component A was added and further mixed until uniform, and filled into a container to obtain a product.
(Result) An SPF25 / PA ++ foundation having a good feel was obtained.

<Example 5>
Liquid foundation (prescription) (mass%)
A Water balance Butylene glycol 5.0
Glycerin 2.0
Carbomer 0.1
Phenoxyethanol 3.0
B cyclopentasiloxane 20.0
Pigmented titanium oxide 5.0
Fine zinc oxide 6.0
PEG-9 polydimethylsiloxyethyl dimethicone 2.0
(Acrylic Sunalkyl / Dimethicone) Copolymer 2.0
(Dimethicone / Vinyl Dimethicone) Cross Polymer 2.0
Phytosterol isostearate 1.0
Invention product 4 3.0
Colorant Appropriate amount (Preparation method) Phase B was mixed well with a disper, and then added to phase A in a uniform solution while stirring with a homomixer and emulsified.
(Result) An emulsion foundation excellent in usability was obtained. The UV protection ability also showed high values such as SPF20 and PA ++.

<Example 6>
Lipstick (prescription) (mass%)
Hydrogenated polyisobutene 60.0
Isostearyl malate 10.0
Trioctanoin 10.0
Dextrin palmitate 3.0
Diglycerin triisostearate 3.0
Pentaerythrityl tetraisostearate3.0
(Dimethicone / Methicone) Copolymer 2.0
Dimethicone 2.0
Invention product 3 1.0
Dextrin myristate 1.0
Stearic acid-treated titanium oxide 1.0
Stearic acid surface treatment Bengala 1.0
Stearic acid surface-treated mica 1.0
Other coloring material, fragrance The remainder (preparation method) Using a roll mill, the following formulation was used to mix uniformly.
(Result) A lipstick with a vivid color tone having excellent adhesion to the lips was obtained.

<Example 7>
Mascara (prescription) (mass%)
A Black iron oxide 5.0
Ammonium acrylate copolymer 30.0
Preservative appropriate amount water 10.0
B Light isoparaffin 30.0
Solid paraffin 8.0
Lanolin wax 8.0
Sorbitan sesquioleate 4.0
Invention product 5 3.0
Fragrance Appropriate amount (Preparation method) Phase A was uniformly dispersed with a homomixer, B was added, and the mixture was uniformly emulsified and dispersed with a homomixer.
(Result) A mascara with good elongation was obtained.

<Example 8>
Moisturizing cream (prescription) (mass%)
A Squalane 3.0
Glyceryl tri-2-ethylhexanoate 2.0
Cetyl isooctanoate 3.0
Dimethicone 6mm ² / s 8.0
Glyceryl stearate 0.5
Polyglyceryl tristearate-6 0.8
Cetyl alcohol 0.5
Stearyl alcohol 0.5
Behenyl alcohol 1.0
New product 1 1.0
B Polyglyceryl stearate-10 3.0
1,3-butylene glycol 5.0
Glycerin 5.0
Hydroxyethyl cellulose 0.3
Xanthan gum 0.1
Carbomer 0.1
Sodium hydroxide
Preservative appropriate amount
The remainder of the water (preparation method) Phase A was uniformly dissolved at 80 ° C, and if stirred with a disper mixer, it was added to Phase B heated to 80 ° C and emulsified.
(Result) A refreshing cream with less oiliness was obtained.

  Since the surface-treated powder of the present invention is a powder excellent in feeling of use and adhesion to the skin, which was difficult unless it was a synthetic polymer, it provides a cosmetic with a good feeling of use of makeup. .

Claims (2)

A surface-treated powder obtained by coating a synthetic spherical calcium carbonate powder having a particle size of 200 μm or less with a wax having a solid ester bond having a melting point of 40 ° C. or higher. A cosmetic comprising the surface-treated powder according to claim 1.