JP2003277217A - Cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cosmetic which is highly effective in diminishing appearances of fine irregularities on a skin such as pores and wrinkles, spreads smoothly and provides a naturally glossy finish. <P>SOLUTION: The cosmetic contains (a) a non-luminescent titanium oxide- coated platy powder, (b) a platy powder having refractive indices of ≥1.5 and <2.2 and (c) a spherical powder having refractive indices of ≥1.3 and <1.5. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a titanium oxide-coated plate-like powder having no glitter, a plate-like powder having a refractive index of 1.5 or more and less than 2.2 and a refractive index of 1.3 or more to 1 or more. The present invention relates to a cosmetic composition containing a spherical powder of less than 0.5. More specifically, it is excellent in the effect of inconspicuously correcting fine irregularities on the skin such as pores and wrinkles, and has a smooth spread and a natural luster feeling. It relates to the finished cosmetics.

[0002]

2. Description of the Related Art Recently, attention has been paid to cosmetics which have the effect of inconspicuously correcting minute irregularities on the skin such as pores, small wrinkles around the corners of the eyes, and roughness of texture. In conventional cosmetics, as a technique for inconspicuously correcting such minute unevenness of the skin, a method of hiding the entire skin by using a high-refractive index powder such as titanium oxide, a luster like titanium oxide-coated mica A method of adding glossy powder to the skin to make unevenness difficult to see, and a method of blurring unevenness by adding spherical powder having high visible light scattering property such as silica or polystyrene are used. Was there.

[0003]

However, in the above method, the finish is too white and unnatural, and the smoothness of extension and spread is lost. Further, in the above method, the unevenness correction effect was not sufficient, and unnatural luster was sometimes noticeable. Furthermore, although the above-described method has an effect of blurring irregularities to some extent, the entire finish becomes matte (matte) and the finish is not natural.

Therefore, it has been desired to develop a cosmetic which is excellent in the effect of inconspicuously correcting fine irregularities on the skin such as pores and fine wrinkles and has a smooth spread and a natural gloss finish.

[0005]

In view of the above situation, the present inventor has conducted diligent research and as a result, as a result, a titanium oxide-coated plate-like powder having no glitter, a refractive index of 1.5 or more and less than 2.2. The present invention has been completed by finding that a cosmetic material containing a combination of the plate-like powder and the spherical powder having a refractive index of 1.3 or more and less than 1.5 solves the above problems.

That is, the present invention provides the following components (a)-
(C); (a) Titanium oxide-coated plate-like powder having no glitter (b) Plate-like powder having a refractive index of 1.5 or more and less than 2.2 (c) Refractive index of 1.3 or more and 1 The present invention provides a cosmetic characterized by containing a spherical powder of less than 0.5.

The powder of the component (a) has a ΔL [45-(-60)] value of less than 30 measured by the following colorimetric method. It is provided. Color measurement method: A powder is uniformly applied to one side of a matte double-sided adhesive tape so that the amount of the powder becomes 5 g / cm ^2, and it is stuck on a matte black plastic plate to prepare a sample. Using this sample, light was irradiated onto the powder coating surface at an incident angle of 45 degrees, and the lightness value L (-
45), and the lightness value L (-60) at the acceptance angle of -60 degrees are measured. The lightness difference ΔL [45-(-6
0)] = L (−45) −L (−60) is calculated.

[0008] Further, there is provided the above cosmetic, characterized in that it contains 1 to 30 mass% of the component (a), 1 to 30 mass% of the component (b), and 1 to 10 mass% of the component (c). To do.

Further, the present invention provides any one of the above cosmetics, wherein the component (b) is tabular barium sulfate.

Further, the present invention provides any one of the above cosmetics, wherein the cosmetic has an effect of correcting unevenness of the skin.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below.
The component (a) used in the present invention is a powder obtained by coating a plate-like powder with titanium oxide, and is a powder having no glittering property, and is used in combination with the component (b) and the component (c). It is a powder that corrects minute irregularities of the inconspicuously.

Further, the component (a) is preferably a powder which does not have glitter and has a value of ΔL [45 − (− 60)] of less than 30 measured by the following colorimetric method. Color measurement method: A powder is uniformly applied to one side of a matte double-sided adhesive tape so that the amount of the powder becomes 5 g / cm ^2, and it is stuck on a matte black plastic plate to prepare a sample. Using this sample, light was irradiated onto the powder coating surface at an incident angle of 45 degrees, and the lightness value L (-
45), and the lightness value L (-60) at the acceptance angle of -60 degrees are measured. The lightness difference ΔL [45-(-6
0)] = L (−45) −L (−60) is calculated. The ΔL (−45) is an area where the incident angle and the light receiving angle are 90 degrees with respect to the powder coating surface, and the so-called specular reflection is strong,
The larger this value, the higher the glitter. On the other hand, the above ΔL
(-60) is a region where the incident angle is 45 degrees and the light receiving angle is -60 degrees with respect to the powder coating surface, and light scattering is strong. The larger this value, the higher the light scattering property. Therefore, it is indicated that the smaller the difference in brightness ΔL [45 − (− 60)] between the two light receiving angles, the lower the glitter.

The plate-like powder in the component (a) includes, for example, powders of mica, sericite, smectite, talc, synthetic mica, synthetic phlogopite, silicic acid anhydride, etc. The above can be used. The average particle size of these plate-like powders is preferably 0.5 to 200 μm, and the aspect ratio is preferably 5 or more.

In the component (a), the titanium oxide coated on the plate-like powder may be either anatase or rutile crystal type, and the average particle size is preferably 0.02 to 1 μm. Further, in the component (a), the coating amount of titanium oxide with respect to the plate-like powder is 15 to 85 mass% (hereinafter, simply “%”).
Abbreviated. ) Is preferable, and 30 to 60% is more preferable.

In the component (a), the method of coating the plate-like powder with titanium oxide is not particularly limited. For example, Japanese Patent Publication No. 5-87545 and Japanese Patent No. 254969.
No. 1, Japanese Patent No. 2559037, etc.,
Examples include a method in which a plate-like powder is dispersed in a solvent and titanium oxide is deposited in the dispersion using titanyl sulfate or the like.

The titanium oxide-coated plate-like powder of the component (a) further contains silicic acid anhydride, barium sulfate, alumina, polymethylmethacrylate, etc. on the titanium oxide in order to scatter light at more angles. It may be processed. In addition, the component (a) may be used after being surface-treated with a known treatment agent such as a fluorine compound, a silicone compound, a metal soap, a wax, a surfactant, an oil and fat, and a hydrocarbon.

The content of the component (a) in the cosmetic of the present invention is preferably 1 to 30%, particularly preferably 5 to 20%. When the component (a) is contained within this range, a more natural finish can be obtained, and a cosmetic having a better unevenness correction effect can be obtained.

The component (b) used in the present invention is a plate-like powder having a refractive index of 1.5 or more and less than 2.2 and has a natural luster and has excellent characteristics of scattering transmitted light. By combining the component (a) and the component (c), the powder can effectively and effectively correct minute irregularities on the skin such as pores and wrinkles. Further, since the plate-like powder having a refractive index of 1.5 or more and less than 2.2 has a low visible light shielding property, it is possible to give a natural finish.

Examples of the component (b) include barium sulfate, alumina, zinc oxide, cerium oxide, boron nitride and the like, and one or more of these can be used. Among these, barium sulfate is preferable because it has a particularly excellent property of scattering transmitted light. Further, the component (b) may be used after being surface-treated with a known treatment agent such as a fluorine compound, a silicone compound, a metal soap, a wax, a surfactant, an oil and fat, and a hydrocarbon. The average particle size of the component (b) is preferably 0.5 to 200 μm, and the aspect ratio is preferably 5 or more.

The content of the component (b) in the cosmetic of the present invention is preferably 1 to 30%, particularly preferably 5 to 20%. When the component (b) is contained in this range, it is possible to obtain a cosmetic having a better spread and spread and a better unevenness correction effect.

The component (c) used in the present invention is a spherical powder having a refractive index of 1.3 or more and less than 1.5, which enhances smooth spreadability and spreads, and has minute recesses on the skin such as pores and wrinkles. Is a powder that combines the components (a) and (b) to make the irregularities less noticeable. In addition, since spherical powders having a refractive index of 1.3 or more and less than 1.5 have a lower refractive index than powders usually used in cosmetics, a natural finish can be obtained by eliminating the unpleasant luster of the skin. Can be given.

Examples of the component (c) include silicic acid anhydride, nylon powder, polyethylene powder, polystyrene powder, alkyl polyacrylate powder, silicon powder, magnesium carbonate, etc. The above can be used. In addition, the component (c)
May be surface-treated with a known treatment agent such as a fluorine compound, a silicone compound, a metal soap, a wax, a surfactant, an oil and fat, and a hydrocarbon. The average particle size of the component (c) is preferably 1 to 30 μm. Is.

Component (c) is a commercially available product such as trefil E-505C and trefil 701C, which are methylsiloxane network polymers having a refractive index of about 1.38 (both Toray.
Dow Corning Silicone), refractive index about 1.39
Trimethylsilsesquioxane powder, Tospearl series (manufactured by Toshiba Silicone Co.), refractive index about 1.3
9. Crosslinked silicone / reticular silicone block copolymers KSP-100, KSP-101, KSP-1
02 (all manufactured by Shin-Etsu Chemical Co., Ltd.) and the like.

The content of the component (c) in the cosmetic of the present invention is preferably 1 to 10%, particularly preferably 3 to 7%. When the component (c) is contained in this range, it is possible to obtain a cosmetic having a better spread and spread and a better effect of correcting unevenness.

The properties of the cosmetic of the present invention are liquid, powder,
It may be solid, emulsion, cream, gel, or the like. The formulation may be any of oil type, powder type, oil-in-water type, water-in-oil type, multi-layer type and the like. Furthermore, the cosmetics of the present invention include skin care cosmetics such as lotion, emulsion, cream, and beauty essence, body care cosmetics such as body powder and body lotion, base material, foundation, white powder, concealer, eye color, lipstick and the like. Although it can be applied to makeup cosmetics, etc., it is suitable for makeup cosmetics such as foundations, bases, concealers, and white powders.
The cosmetic of the present invention is particularly suitable for skin care cosmetics and makeup cosmetics for the purpose of correcting unevenness of the skin.

In the cosmetic of the present invention, in addition to the above-mentioned components, powders other than the components (a) to (c), an oil agent, an aqueous component, and other components may be added, if necessary, within a range that does not impair the effects of the present invention. Water-soluble polymer, surfactant, film forming agent such as trimethylsiloxysilicic acid, acryl-silicone graft copolymer,
Proteins, mucopolysaccharides, collagen, moisturizers such as elastin, α-tocopherol, antioxidants such as ascorbic acid, vitamins, antiphlogistics, beauty ingredients such as crude drugs, preservatives such as paraoxybenzoate ester, phenoxyethanol, perfumes, etc. Can be appropriately mixed.

The powders other than the components (a) to (c) used in the present invention are for the purpose of adjusting the feel and imparting a makeup effect, etc., and may be any powders usually used in cosmetics. , Plate shape, spindle shape, needle shape, etc., particle size,
It is not particularly limited by the particle structure such as porous and non-porous,
Inorganic powders, glitter powders, organic powders, pigment powders,
Examples thereof include composite powders. Specifically, konjou,
Ultramarine blue, silicic acid anhydride, magnesium carbonate, calcium carbonate, aluminum hydroxide, chromium hydroxide, carbon black, aluminum silicate, magnesium silicate, magnesium aluminum silicate, mica, smectite, bentonite, kaolin, synthetic mica, synthetic sericite , Inorganic powders such as sericite, talc, silicon carbide, barium sulfate, bismuth oxychloride, titanium oxide coated mica, iron oxide coated mica, iron oxide treated titanium oxide coated mica, organic pigment treated titanium oxide coated mica, aluminum powder And the like, and organic powders such as magnesium stearate, zinc stearate, N-acyl lysine and nylon, and these may be used alone or in combination of two or more. Further, these powders may be used alone or in combination of two or more, and the surface thereof may be treated with a known treating agent such as a fluorine compound, a silicone compound, a metal soap, a wax, a surfactant, an oil and fat, and a hydrocarbon. It may be used after treatment. When the cosmetic of the present invention contains these powders, the content is preferably 0.1 to 40%.

The oily agent used in the present invention is an oily ingredient usually used in cosmetics, and has origins such as animal oils, vegetable oils and synthetic oils, and properties such as solid oils, semi-solid oils, liquid oils and volatile oils. And hydrocarbons, oils and fats, waxes, hydrogenated oils, ester oils, fatty acids, higher alcohols, silicone oils, fluorine-based oils, lanolin derivatives, oily gelling agents, etc. . Specifically, liquid paraffin,
Hydrocarbons such as squalane, petrolatum, polyisobutylene, polybutene, paraffin wax, ceresin wax, microcrystalline wax, ethylene propylene copolymer, montan wax, Fischer-Tropsch wax, sorghum, olive oil, castor oil, mink oil, macadamian nut oil Oils and fats such as beeswax, carnauba wax, candelilla wax, waxes such as geiro, jojoba oil, cetyl isooctanoate,
Isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, glyceryl trioctanoate, polyglyceryl diisostearate, diglyceryl triisostearate, glyceryl tribehenate, pentaerythritol dioctanoate, neopentyl glycol dioctanoate, cholesterol fatty acid ester, N- Esters such as lauroyl-L-glutamic acid di (cholesteryl / behenyl / octyldodecyl),
Stearic acid, lauric acid, myristic acid, behenic acid,
Fatty acids such as isostearic acid and oleic acid, stearyl alcohol, cetyl alcohol, lauryl alcohol, oleyl alcohol, isostearyl alcohol,
Higher alcohols such as behenyl alcohol, low polymerization degree dimethylpolysiloxane, high polymerization degree dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, polyether modified polysiloxane, polyoxyalkylene / alkylmethyl Silicone such as polysiloxane / methylpolysiloxane copolymer, alkoxy-modified polysiloxane, crosslinkable organopolysiloxane, fluorine-modified polysiloxane, fluorine-based oil agents such as perfluorodecane, perfluorooctane, perfluoropolyether, lanolin , Lanolin derivatives such as lanolin acetate, lanolin fatty acid isopropyl, and lanolin alcohol, 12
-Oil gelling agents such as hydroxystearic acid, dextrin fatty acid ester, sucrose fatty acid ester, starch fatty acid ester and the like can be mentioned. These can be used alone or in combination of two or more. When the cosmetic of the present invention contains these oil agents, the content is 0.5 to
30% is preferable.

The aqueous component used in the present invention is used for the purpose of a texture modifier, a moisturizer, a cooling agent, an antiseptic agent, etc., and water, alcohols such as ethanol and isopropyl alcohol, propylene glycol, 1, Examples include glycols such as 3-butylene glycol, dipropylene glycol and polyethylene glycol, and glycerols such as glycerin, diglycerin and polyglycerin.
These may be used alone or in combination of two or more. When the cosmetic of the present invention contains these aqueous components, the content of the aqueous component is 40 to 40 when the cosmetic is an oil-in-water type.
95% is preferable, and 0.1-40% is preferable when the cosmetics are other than oil-in-water type.

The water-soluble polymer used in the present invention is used for the purpose of a viscosity modifier, a feel modifier, etc.,
Guar gum, sclerotium gum, gellan gum, pectin, agar, sodium chondroitin sulfate, hyaluronic acid, gum arabic, sodium alginate, carrageenan, xanthan gum, locust bean gum, methyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, carboxy vinyl polymer, alkyl modified carboxy vinyl Polymers, polyvinyl alcohol, polyvinylpyrrolidone, sodium polyacrylate and the like can be mentioned, and these can be used alone or in combination of two or more. When the cosmetic of the present invention contains these water-soluble polymers, the content is preferably 0.01 to 5%.

The surfactant used in the present invention is used for the purpose of emulsifying agent, wetting agent, feel-adjusting agent, etc., and is glycerin fatty acid ester and its alkylene glycol adduct, polyglycerin fatty acid ester and its alkylene glycol addition. , Propylene glycol fatty acid ester and its alkylene glycol adduct, sorbitan fatty acid ester and its alkylene glycol adduct, sorbitol fatty acid ester and its alkylene glycol adduct, polyalkylene glycol fatty acid ester, polyoxyalkylene modified silicone, polyoxyalkylene alkyl Nonionic surfactants such as co-modified silicone, alkylbenzene sulfate, alkylsulfonate, α-olefinsulfonate, dialkylsulfone Succinate, α-sulfonated fatty acid salt, acylmethyl taurine salt, N-methyl-N-alkyl taurine salt, polyoxyethylene alkyl ether sulfate, polyoxyethylene alkyl phenyl ether sulfate, alkyl phosphate, polyoxyethylene Alkyl ether phosphate, polyoxyethylene alkylphenyl ether phosphate, N-acyl amino acid salt, N-acyl-
Anionic surfactants such as N-alkyl amino acid salts,
Cationic surfactants such as alkylamine salts, polyamines and alkanoylamine fatty acid derivatives, alkyl quaternary ammonium salts, alicyclic quaternary ammonium salts, lecithin, N, N-dimethyl-N-alkyl-N-carboxymethyl Amphoteric surfactants such as ammonium betaine can be used, and these can be used alone or in combination of two or more. When the cosmetic of the present invention contains these surfactants, the content is preferably 0.01 to 10%.

[0032]

EXAMPLES The present invention will be described in more detail with reference to the following examples. These do not limit the present invention in any way.

Examples 1 to 9 and Comparative Examples 1 to 5: Powder foundation (for unevenness correction) Powder foundations having the compositions shown in Table 1 were prepared by the production method described below to obtain "smooth extension and spread",
Each item of "finish of natural luster" and "effect of unevenness correction" was evaluated by the following evaluation methods and criteria, and the results are also shown in Table 1.

[0034]

[Table 1]

(Production Method) A: Components 1 to 14 are mixed. B: Heat components 15 to 17 and mix. C: B is added to A, uniformly dispersed, and pulverized. D: C was compression molded on a gold plate to obtain a powder foundation.

(Evaluation method: spreadability, finish feeling)
Twenty 20-year-old cosmetics specialized panels were asked to use the powder foundations of the above Examples and Comparative Examples, and each panel was selected for each item of "smooth spread and spread" and "finish of natural luster". Ratings were given according to the evaluation criteria shown below, the average of the ratings was calculated for each foundation, and judgment was made according to the judgment criteria shown below.

(Evaluation method: Concavity and convexity correction effect) 20 professional cosmetic panels aged 20 to 40 were applied with the powder foundations of the above Examples and Comparative Examples on the right half face,
The evaluator evaluates the uncoated part of the left half face according to the following evaluation criteria,
Comparative observation was performed, a score was given to each panel, the average of the scores of all the panels was calculated, and judgment was made according to the following judgment criteria.

As is clear from Table 1, the powder foundations of Examples 1 to 9 according to the present invention are all items of "smooth extension and spread", "natural gloss finish", and "irregularity correction effect". It was an excellent cosmetic. on the other hand,
In Comparative Examples 1 to 3 lacking any of the components (a) to (c), a sufficient unevenness correction effect was not obtained. Further, in Comparative Example 4, which is a conventional technique containing a powder having a high refractive index, the spread and spread were poor, and the finish was unnatural. Comparative Example 5 using titanium mica having luster did not have a natural finish because it had a strong unnatural luster.

[0039]   Example 10: Oil-in-water emulsion base material (for unevenness correction) (Ingredient) (mass%)   1. Cetanol 0.5   2. Vaseline 1   3. Squalane 3   4. Dimethyl polysiloxane (Note 6) 0.5   5. Glycerin 5   6.1,3-butylene glycol 10   7. Carboxy vinyl polymer 0.15   8. Purified water Remaining amount   9. Potassium hydroxide 0.1 10. Polyoxyethylene (20 mol) monooleate 1 11. Glyceryl monostearate 1 12. Crosslinked silicone         Reticulated silicone block copolymer powder (Note 7) 3 13. Barium sulphate treated titanium oxide coated mica (Note 8) 3 14. Plate-like alumina with an average particle size of 20 μm (aspect ratio 25) 5 15. Fragrance suitable amount 16. Bio hyaluronic acid 0.1 * Note 7: KSP-101 (manufactured by Shin-Etsu Chemical Co., Ltd.) * Note 8: ΔL [45-(-60)] = 12.2 barium sulfate treatment oxidation         Titanium-Coated Mica Roller Star Pigment (Merck)

(Production Method) A: Components 1 to 4 are heated and mixed. B: Components 5-11 are heated and mixed uniformly. C: Add A to B and emulsify. D: C is cooled to room temperature, components 12 to 16 are added, and the mixture is uniformly dispersed. E: D was filled in a container to obtain an oil-in-water type emulsion liquid base material.

The oil-in-water type emulsion base material of Example 10 according to the present invention is a cosmetic material excellent in all the items of "smooth extension and spread", "finish of natural luster", and "unevenness correction effect". Met.

[0042]   Example 11: Powdery white powder (for unevenness correction) (Ingredient) (mass%)   1. Boron nitride (Note 9) with an average particle size of 9 μm 20   2. Silica / Alumina treated titanium oxide coated mica (Note 10) 5   3. Remaining amount of talc   4. Poly (methyl methacrylate) with an average particle size of 5 μm (Note 11) 1   5. Methyl paraoxybenzoate 0.2   6. Red No. 226 0.05   7. Yellow No. 4 aluminum rake 0.1   8. Oil-soluble aloe extract 0.1 * Note 9: SHP-6 (Made by Mizushima Alloy Iron Co., Ltd.) * Note 10: Titanium oxide with ΔL [45-(-60)] = 5.3 is coated at 15%.           Powder of mica coated with silica and alumina * Note 11: Matsumoto Microsphere M305 (Matsumoto Yushi-Seiyaku Co., Ltd.)

(Manufacturing method) A: Components 1 to 8 are mixed uniformly. B: A is crushed. C: B was filled in a container to obtain a powdery white powder.

The powdery white powder of Example 11 according to the present invention was a cosmetic which was excellent in all the items of "smooth spread and spread", "finishing of natural luster", and "unevenness correction effect".

[0045]

As described above in detail, the cosmetic composition of the present invention is excellent in the effect of inconspicuously correcting fine irregularities on the skin such as pores and wrinkles, and has a smooth spread and a natural gloss finish. It was a cosmetic.

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 4C083 AA112 AB032 AB152 AB172                       AB222 AB232 AB242 AB361                       AB362 AB432 AC012 AC022                       AC072 AC122 AC242 AC402                       AC422 AC482 AC852 AC862                       AD022 AD092 AD152 AD332                       BB25 BB26 CC01 CC02 CC11                       CC12 DD17 DD21 DD23 DD31                       DD33 DD41 EE06 EE11

Claims (5)

[Claims] 1. The following components (a) to (c): (A) Titanium oxide-coated plate-like powder having no glitter (B) Plate-like powder having a refractive index of 1.5 or more and less than 2.2 (C) Spherical powder having a refractive index of 1.3 or more and less than 1.5 A cosmetic comprising: 2. The value of ΔL [45 − (− 60)] of the powder of the component (a) measured by the following colorimetric method is 3.
It is less than 0, The cosmetics of Claim 1 characterized by the above-mentioned. Color measurement method: A powder is uniformly applied to one side of a matte double-sided adhesive tape so that the amount of the powder becomes 5 g / cm ^2, and it is stuck on a matte black plastic plate to prepare a sample. Using this sample, light was irradiated onto the powder coating surface at an incident angle of 45 degrees, and the lightness value L (-
45), and the lightness value L (-60) at the acceptance angle of -60 degrees are measured. The lightness difference ΔL [45-(-6
0)] = L (−45) −L (−60) is calculated. 3. 1 to 30% by mass of the component (a), 1 to 30% by mass of the component (b), and 1 to 10% by mass of the component (c). The listed cosmetics. 4. The cosmetic according to claim 1, wherein the component (b) is tabular barium sulfate. 5. The cosmetic according to claim 1, wherein the cosmetic has an effect of correcting unevenness of the skin.