JP4602059B2 - Infrared protective cosmetics - Google Patents

Description

The present invention relates to a cosmetic for infrared protection, more particularly, no with unevenness in cosmetic application relates to cosmetic for infrared protection to protect unevenness of infrared reflection effect after application is improved.

It is already known that ultraviolet rays, which are light rays in the vicinity of visible light shorter than visible light, have an adverse effect on the skin, and various countermeasures have been devised. Light rays in the vicinity of visible light rays and infrared rays positioned opposite to ultraviolet rays are also called heat rays, and are well absorbed by the object and efficiently converted into heat energy inside the object. Infrared radiation accounts for 80% of sunlight. Infrared rays are less likely to be reflected or scattered by fine particles in the atmosphere than ultraviolet rays and visible rays, and penetrate well into the air without being obstructed by molecules such as oxygen and nitrogen in the atmosphere. And reach. When the infrared rays are classified, the short wavelength side is called near infrared ray and the long wavelength side is called far infrared ray with 4000 nm as a boundary. Compared with near infrared rays, far infrared rays have a larger absorbing action and play various roles as heat transporters. As an effect of infrared rays on the skin, it is known to exhibit a warm feeling due to the conversion to the thermal energy described above, but in recent years, it is involved in skin aging or light-induced carcinogenesis along with ultraviolet rays. It is suggested that As described above, since the possibility that infrared rays have an adverse effect on the skin exists in recent years, only a few countermeasures are known. For example, metal powder such as silver-coated powder or stainless steel, such as powder coated with a powder such as talc in the metal powder that is known (for example, Patent Document 1, Patent Document 2, Patent Document 3, Patent Document 4 ). However, it has been pointed out that when these metal powders are blended in a large amount in order to be effective, unevenness has been pointed out, and the infrared reflection effect has not been sufficient. As described above, it is very difficult for an infrared protective cosmetic material to have both an excellent infrared protective effect and a non-uniform cosmetic film, and a cosmetic material having these properties at the same time has been demanded.

On the other hand, the hollow spherical resin powder is already known as a raw material for cosmetics, that are also commercially available (e.g., see Patent Document 5). However, it has not been known at all to have an effect of efficiently reflecting infrared rays, and the use of such powders for the purpose of protection from infrared rays can be used for protection from infrared rays contained together with such boron nitride powder. It has not been known at all that the cosmetic does not become uneven and the infrared protection unevenness is improved.

JP 2002-012851 A JP-A-63-27421 JP-A-2-34589 JP-A-1-208324 JP 2003-313105 A Japanese Examined Patent Publication No. 6-11585 Japanese Patent Publication No.59-53290 Japanese Patent Laid-Open No. 4-9319

The present invention has been made under such circumstances, and has an excellent infrared protection effect, has no unevenness when applying cosmetics, and has improved unevenness in protection of the infrared reflection effect after application. It is an object to provide cosmetics for use.

In view of such a situation, the present inventors have an excellent infrared protection effect, there is no unevenness at the time of applying cosmetics, and the infrared protection effect for the infrared reflection effect after application is improved. As a result of earnest research efforts in search of cosmetics, the cosmetics are characterized by comprising 1) a hollow resin spherical powder coated with a metal oxide containing titanium dioxide, and 2) a boron nitride powder. Was found to have such characteristics, and the present invention was completed. That is, the present invention relates to the following technique.
(1) Infrared protection comprising 1) 1-50% by weight of hollow resin spherical powder coated with a metal oxide containing titanium dioxide and 2) 0.1% by weight or more of boron nitride powder Cosmetics (except when containing organopolysiloxane elastomer powder) .
(2) The infrared protective cosmetic according to (1), wherein a main component of the hollow resin spherical powder is polyacrylonitrile.
(3) The infrared protective cosmetic according to (1) or (2), wherein the hollow resin spherical powder has an average particle size of 10 to 30 μm.

According to the present invention, it is possible to provide an infrared protective cosmetic material that has an excellent infrared protective effect, has no unevenness when the cosmetic is applied, and has improved unevenness of the infrared reflection effect after application. .

(1) it is an essential component of the cosmetic for infrared protection of the present invention "hollow spherical resin powder coated with metal oxides including titanium dioxide"
The cosmetic for infrared protection according to the present invention is characterized by containing a hollow resin spherical powder coated with a metal oxide containing titanium dioxide as an essential component. Examples of the hollow resin spherical powder used as the base of the powder include vinyl monomers such as vinyl chloride, vinyl acetate, and methyl vinyl ether, acrylic acid, acrylic ester, methacrylic acid, methacrylic ester, acrylonitrile, methacrylo Examples include homopolymers or copolymers obtained by polymerizing one or more monomers selected from acrylic monomers such as nitrile, styrene, vinylidene chloride, divinylbenzene, ethylene glycol dimethacrylate, and the like, and one or more of these are used. be able to. Among these, a polymer or copolymer obtained by polymerizing one or more monomers selected from acrylic acid, methacrylic acid or esters thereof, acrylonitrile, vinylidene chloride, methacrylonitrile and the like is preferable. Further, such a polymer may be cross-linked with a cross-linking agent such as divinylbenzene, ethylene glycol dimethacrylate, or triacryl formal. As a method of providing a hollow in such a substrate, a method utilizing the construction of a cell structure by a coacervation method (see, for example, Patent Document 6), for example, ethane, propane, butane, isobutane, isobutene, isopentane, neopentane, etc. Volatile liquids such as hydrocarbons such as neohexane, acetylene, hexane, heptane, halogenated hydrocarbons such as trichlorofluoromethane and dichlorodifluoromethane, low-boiling compounds such as tetraalkylsilane, etc. It can be produced in accordance with a known method such as a method of encapsulating in a polymer, heating and vaporizing a foaming agent to construct a hollow (see, for example, Patent Document 7). In the hollow spherical resin powder thus produced, the hollow form may vary depending on the production conditions. However, the effect of reflecting the infrared rays of the present invention is small, so the form is limited. Not. Examples of such a form include a form in which only one hollow is present, a form in which a large number of small bubbles are present in a porous state, and an intermediate form thereof. Thus obtained, the resin powder of the hollow spherical, metal oxides including titanium dioxide (i.e., titanium dioxide, or titanium dioxide and other metal oxides) are coated with. The metal oxide other than titanium dioxide, For example, acid zinc, iron oxide, cerium oxide, zirconium oxide and silica. Particularly preferred are Ru der acid cerium. What is necessary is just to perform the coating | coated with this metal oxide in accordance with a conventional method (for example, refer patent document 8). In such a coating, the preferred mass ratio of the hollow spherical resin powder to the metal oxide is 5:95 to 60:40, more preferably 1: 9 to 1: 1. The hollow resin spherical powder coated with the metal oxide containing titanium dioxide thus obtained preferably has an average particle diameter of 10 to 30 μm, more preferably 15 to 25 μm. This is because if the average particle size is too small, the effect of reflecting infrared rays may be reduced, and if it is too large, the optical effect may be excessive and the cosmetic effect may be impaired. Such powders already exist on the market, and such commercial products can be purchased and used. Preferable examples of commercially available products include EXPANSEL (manufactured by KEMANORDPLAST AB), Matsumoto Microsphere F series, Matsumoto Microsphere MFL series (both manufactured by Matsumoto Yushi Seiyaku Co., Ltd.), and Matsumoto Microsphere MFL. series are preferred, M FL50STI is in series (silica titanium dioxide coated polyacrylonitrile hollow spherical powder; average particle diameter 20μm), MFL30STI (titanium dioxide-coated polyacrylonitrile hollow spherical powder; average particle size 20 [mu] m) is particularly preferably exemplified it can. Consuming and empty the resin spherical powder in which is coated with a metal oxide containing titanium dioxide may also contain only species, may also contain a combination of two or more. Below the cosmetics for infrared protection of the present invention, such a powder in a total amount, relative to the total amount of the cosmetic, 1-50 mass%, Ru preferably is contained 2 to 30 mass%.

(2) The cosmetic for infrared protection cosmetic essential component is boron nitride powder present invention for infrared protection of the present invention is characterized by containing a boron nitride powder as an essential component. The boron nitride powder used in the present invention is generally a powder synthesized by the following method.
(A) Boron is baked at about 1500 ° C. in a nitrogen stream.
(B) Baking ammonia and boron oxide, ammonium chloride and borax, or boric acid and urea at about 800 to 1600 ° C.
Crystal structures include hexagonal, wurtzite, rhombohedral, cubic, and the like. Cubic and wurtzite forms are mainly used as abrasives, and hexagonal forms are used as lubricants. The rhombohedral shape is synthesized only by a special manufacturing method. In the present invention, any of these can be used, and a mixture of these can also be used. Among these, hexagonal boron nitride is preferable because it is easy to synthesize, can be easily sized by pulverization and the like, has the best use feeling when blended with cosmetics, and has no unevenness. The boron nitride powder used in the present invention is obtained by stirring and washing the boron nitride crystals obtained above in a water-soluble organic solvent such as lower alcohol or acetone, or an aqueous solution thereof, or an aqueous surfactant solution, at a low temperature (60 ° C. or lower). Is desirable) and is dried under a low oxygen atmosphere (in a nitrogen stream or in a vacuum). The boron nitride powder obtained in this way may be blended in cosmetics as it is, or may be used after the surface is treated. Examples of such surface treatment include hydrogen methylpolysiloxane baking treatment, silane coupling agent, silane coupling treatment, perfluoroalkyl silylation treatment, treatment with perfluoroalkyl phosphate ester salt, aluminum stearate, etc. Preferred examples include metal soap coating treatment, treatment with acylated amino acid salts such as aluminum acylglutamate, and coating treatment with phospholipids such as lecithin. The average particle shape of the boron nitride powder used in the present invention is not particularly limited, but is preferably from 0.1 to 30 μ in terms of spherical average particle size. If it is smaller than 0.1 μm, unevenness cannot be improved, and if it is larger than 30 μm, it may feel rough, and it cannot be said that it is the best.
Such boron nitride already exists as a cosmetic raw material, and the infrared protective cosmetic according to the present invention can be purchased and used. . Among such commercially available products, preferred are boron nitride SHP-3 (average particle size 5.3 μm) and boron nitride SHP-6 (average particle size 9.50) sold by Mizushima Alloy Iron Co., Ltd. 6 μm). In the infrared protective cosmetic of the present invention, such boron nitride can be contained alone or in combination of two or more. In order to achieve such an effect, the compounding amount of the boron nitride powder can be selected in a wide range of 0.1 to 99.0% by mass in the total amount of the cosmetic. A particularly preferable range is 1 to 40% by mass. If the amount is less than 0.1% by mass, unevenness cannot be improved.

(3) Infrared protective cosmetic of the present invention The infrared protective cosmetic of the present invention is characterized by containing the essential components. In addition to the essential components, the infrared protective cosmetic of the present invention can contain optional components that are usually used in cosmetics. Examples of such optional ingredients include macadamia nut oil, avocado oil, corn oil, olive oil, rapeseed oil, sesame oil, castor oil, safflower oil, cottonseed oil, jojoba oil, coconut oil, palm oil, liquid lanolin, and hardened coconut oil. Oils such as hardened oil, mole, hardened castor oil, beeswax, candelilla wax, carnauba wax, ibotarou, lanolin, reduced lanolin, hard lanolin, jojoba wax, waxes, liquid paraffin, squalane, pristane, ozokerite, paraffin, ceresin, petrolatum , Hydrocarbons such as microcrystalline wax, higher fatty acids such as oleic acid, isostearic acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, undecylenic acid, cetyl alcohol, stearyl alcohol, isostearyl Alcohol, behenyl alcohol, octyldodecanol, higher alcohol such as myristyl alcohol, cetostearyl alcohol, cetyl isooctanoate, isopropyl myristate, hexyldecyl isostearate, diisopropyl adipate, di-2-ethylhexyl sebacate, cetyl lactate, malic acid Diisostearyl, di-2-ethylhexanoic acid ethylene glycol, dicaprate neopentyl glycol, di-2-heptylundecanoic acid glycerin, tri-2-ethylhexanoic acid glycerin, tri-2-ethylhexanoic acid trimethylolpropane, tri Synthetic ester oils such as trimethylolpropane isostearate and pentane erythritol tetra-2-ethylhexanoate, dimethylpolysiloxane, methylphenylpoly Loxane, linear polysiloxane such as diphenylpolysiloxane, cyclic polysiloxane such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexanesiloxane, amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, Oil agents such as silicone oil such as modified polysiloxane such as fluorine-modified polysiloxane, anionic surfactants such as fatty acid soap (sodium laurate, sodium palmitate, etc.), potassium lauryl sulfate, triethanolamine ether of alkyl sulfate, chloride Cationic surfactants such as stearyltrimethylammonium, benzalkonium chloride, laurylamine oxide, imidazoline-based amphoteric surfactants (2-cocoyl-2-imida Zolinium hydroxide-1-carboxyethyloxy disodium salt, etc.), betaine surfactants (alkyl betaine, amide betaine, sulfobetaine, etc.), amphoteric surfactants such as acylmethyltaurine, sorbitan fatty acid esters (sorbitan) Monostearate, sorbitan sesquioleate, etc.), glycerin fatty acids (eg, glyceryl monostearate), propylene glycol fatty acid esters (eg, propylene glycol monostearate), hardened castor oil derivatives, glycerin alkyl ethers, POE sorbitan fatty acid esters (POE sorbitan monooleate, polyoxyethylene sorbitan monostearate, etc.), POE sorbite fatty acid esters (POE-sorbitol monolaurate, etc.), POE glycerin fatty acid ester Tells (POE-glycerol monoisostearate, etc.), POE fatty acid esters (polyethylene glycol monooleate, POE distearate, etc.), POE alkyl ethers (POE2-octyldodecyl ether, etc.), POE alkylphenyl ethers (POE nonylphenyl) Ethers, etc.), Pluronic types, POE / POP alkyl ethers (POE / POP2-decyltetradecyl ether, etc.), Tetronics, POE castor oil / hardened castor oil derivatives (POE castor oil, POE hardened castor oil, etc.), Nonionic surfactants such as sucrose fatty acid ester and alkyl glucoside, polyethylene glycol, glycerin, 1,3-butylene glycol, erythritol, sorbitol, xylitol, maltitol, propylene Polyols such as recall, dipropylene glycol, diglycerin, isoprene glycol, 1,2-pentanediol, 2,4-hexylene glycol, 1,2-hexanediol, 1,2-octanediol, pyrrolidone carboxylic acid Moisturizing ingredients such as sodium, lactic acid, sodium lactate, guar gum, quince seed, carrageenan, galactan, gum arabic, pectin, mannan, starch, xanthan gum, curdlan, methylcellulose, hydroxyethylcellulose, carboxymethylcellulose, methylhydroxypropylcellulose, chondroitin sulfate , Dermatan sulfate, glycogen, heparan sulfate, hyaluronic acid, sodium hyaluronate, tragacanth gum, keratan sulfate, chondroitin, mucoitin sulfate, hyaluronan Droxyethyl guar gum, carboxymethyl guar gum, dextran, keratosulfuric acid, locust bean gum, succinoglucan, caronic acid, chitin, chitosan, carboxymethylchitin, agar, polyvinyl alcohol, polyvinylpyrrolidone, carboxyvinyl polymer, sodium polyacrylate, Thickeners such as polyethylene glycol and bentonite, surface may be treated, powder such as mica, talc, kaolin, synthetic mica, calcium carbonate, magnesium carbonate, silicic anhydride (silica), aluminum oxide, barium sulfate The surface may be treated, bengara, yellow iron oxide, black iron oxide, cobalt oxide, ultramarine, bitumen, titanium oxide, zinc oxide inorganic pigments, the surface may be treated, mica titanium, Fish phosphorus foil, bismuth oxychloride Pearl agents, which may be raked Red 202, Red 228, Red 226, Yellow 4, Blue 404, Yellow 5, Red 505, Red 230, Red 223, Orange 201 , red 213 No., yellow No. 204, yellow No. 203, blue No. 1, green No. 201, purple No. 201, organic dyes red No. 204, etc., polyethylene powder, polymethyl methacrylate, nylon powder powder and organic powder Body (excluding organopolysiloxane elastomer) , paraaminobenzoic acid UV absorber, anthranilic acid UV absorber, salicylic acid UV absorber, cinnamic acid UV absorber, benzophenone UV absorber, sugar UV Absorber, 2- (2′-hydroxy-5′-t-octylphenyl) benzotriazole, 4-methoxy-4′-t-butyldibenzoyl UV absorbers such as methane, lower alcohols such as ethanol and isopropanol, vitamin A or its derivatives, vitamin B6 hydrochloride, vitamin B6 tripalmitate, vitamin B6 dioctanoate, vitamin B2 or its derivatives, vitamin B12, vitamin B15 or Vitamin B such as its derivatives, vitamin E such as α-tocopherol, β-tocopherol, γ-tocopherol, vitamin E acetate, vitamin D, vitamin H, vitamins such as pantothenic acid, panthetin, pyrroloquinoline quinone, etc. Preferred examples can be given. The infrared protective cosmetic of the present invention can be produced by treating such essential components and optional components according to a conventional method. The infrared protective cosmetic of the present invention thus obtained has an excellent infrared protective effect. The infrared protective cosmetic of the present invention is not particularly limited, but is preferably applied to a base makeup cosmetic, particularly preferably applied to a foundation, and particularly preferably applied to a powder foundation. .

  Hereinafter, the present invention will be described in more detail with reference to examples, but it is needless to say that the present invention is not limited to such examples.

According to the prescription shown below, Powder Foundation 1 which is a cosmetic for infrared protection of the present invention was prepared. That is, the prescription components were mixed with a Henschel mixer, then pulverized with a palverizer equipped with a 1 mm herringbone screen, filled in a mold and press-molded to obtain a powder foundation 1.

  In the same manner as in Example 1, a powder foundation 2 of the present invention was prepared according to the following formulation.

  In the same manner as in Example 1, the powder foundation 3 of the present invention was prepared according to the following formulation.

<Test Example 1>
Hereinafter, the present invention will be described in more detail with reference to test results using Examples and Comparative Examples. Moreover, the method of the evaluation test with respect to the various characteristics of the cosmetics used by the Example and the comparative example is shown below.
Using the powder foundations 1 to 3 of Examples 1 to 3, the infrared reflection effect was examined. That is, using one panelist, the right half face was made with a specimen, the left half face was left as a bare face, infrared rays were irradiated using an infrared lamp, and the reflection state of infrared rays from the face was measured using thermography. . From the thermographic image, the temperature difference from the average face was calculated in terms of radiant heat. As evaluation with unevenness, the reflection state of infrared rays was measured ten times by thermography, converted into radiant heat, and the difference between the highest numerical value and the lowest numerical value was taken as the evaluation result. Therefore, the lower the score, the less unevenness and the less infrared protection unevenness. As Comparative Example 1, all Matsumoto microspheres MFL50STI of Foundation 1 were replaced with Typeke TTO-F6. As Comparative Example 2, boron nitride SHP-3 was replaced with Typeke TTO-F6. Were prepared by replacing Matsumoto Microsphere MFL50STI and boron nitride SHP-3 with Type TTO-F6 and evaluated in the same manner. The results are shown in Table 4. From this, it can be seen that the cosmetic of the present invention has an infrared protective effect, has no unevenness when applying the cosmetic, and improves the protective unevenness of the infrared reflection effect after application.

  The present invention can be applied to powder foundations and the like.

Claims (3)

Infrared protective makeup comprising 1) 50% by weight of hollow resin spherical powder coated with a metal oxide containing titanium dioxide and 2) 0.1% by weight or more of boron nitride powder. (Excluding cases containing organopolysiloxane elastomer powder) .   The infrared protective cosmetic according to claim 1, wherein a main component of the hollow resin spherical powder is polyacrylonitrile.   The infrared protective cosmetic according to claim 1 or 2, wherein the hollow resin spherical powder has an average particle size of 10 to 30 µm.