JP5839450B2 - Powder cosmetics - Google Patents

Description

  The present invention relates to an ultraviolet protective cosmetic, and more particularly to a powder cosmetic that has a high ability to protect against ultraviolet rays in the region A, has makeup, and is excellent in usability.

  In recent years, an important function required for cosmetics is the ability to protect against ultraviolet rays. Since the ultraviolet A wave (UV-A) of 320 nm to 400 nm and the ultraviolet B wave (UV-B) of 290 nm to 320 nm have arrived on the earth, the action on each skin is different. There is a need for the ability to protect the area against ultraviolet rays.

  Since the ultraviolet A wave has a longer wavelength than the ultraviolet B wave, it is considered that the ultraviolet A wave passes through the epidermis and reaches the dermis deep in the skin. For this reason, UV-B exposure mainly causes sunburn that causes the skin to become red in a short time, whereas UV-A has a problem of so-called photoaging which denatures collagen fibers and elastin fibers in the dermis and promotes skin aging. It has become.

  On the other hand, in the cosmetics, solid powder cosmetics such as a powder foundation are excellent in portability and can be easily used. The foundation is required to have an effect of concealing troubles such as skin blotches and dullness, and is also required to protect the skin from ultraviolet rays because it is applied to the outermost part of the makeup cosmetic.

  Against this background, various materials have been developed to prevent the effects of ultraviolet rays on the skin.

  Examples of the material having an ultraviolet scattering effect include inorganic oxides such as titanium dioxide and zinc oxide. For these purposes, finely divided fine particle titanium dioxide and fine particle zinc oxide have come to be used exclusively for the purpose of increasing the ultraviolet shielding property (see, for example, Patent Document 1 and Patent Document 2). However, compounding in a large amount causes a problem in moldability, and further, the usability such as caking, deterioration of touch and paleness may be remarkably lowered.

For this reason, there is a limit to sufficiently exhibiting the ultraviolet protection effect by blending the ultraviolet scattering agent , and a powder cosmetic that can provide the expected ultraviolet protection effect has been desired. Therefore, ultraviolet absorbers that can obtain a high ultraviolet protection effect by absorbing ultraviolet rays and mainly converting them into thermal energy have been used. Ultraviolet absorber, with a small amount of mixing, it is possible to impart effective protection effect against ultraviolet specific wavelength region in cosmetics.

  Of these, in addition to UV-B region UV absorbers, an attempt was made to add UV-A region UV absorbers, which effectively protected against UV-A region UV rays. However, in general, ultraviolet absorbers are highly polar oils, and stickiness may occur when the blending amount is increased in order to obtain a sufficient ultraviolet protection effect.

  On the other hand, in cosmetics, a silicone-based base is often used for the purpose of improving usability such as good makeup and elongation and refreshing. However, ultraviolet absorbers generally exhibit poor solubility in silicone bases, and it is conceivable to add further oils in order to solve this problem. The point with excellent usability is offset.

  Therefore, in order to obtain the desired UV-A protection effect, it contains the UV absorber in the UV-A region as described above, and also contains silicone oil to improve makeup and usability. However, there has been a strong demand for the development of cosmetics with excellent makeup and usability.

  On the other hand, in the emulsifier form, a method of dispersing a highly polar oil phase containing an ultraviolet absorber and silicone oil as separate emulsified particles (see, for example, Patent Document 3) or a specific monoester oil and a silicone chain-branched alkyl. Trial of emulsion stability by containing polyoxyethylene-modified silicone (see, for example, Patent Document 4) and trial of using 2-ethylhexyl 2-ethylhexanoate and / or isononyl 2-ethylhexanoate (see, for example, Patent Document 5) Has been made.

  In addition, an attempt to encapsulate the ultraviolet absorber in spherical polymer particles (see, for example, Patent Document 6) or a novel silicone-based benzophenone derivative as a novel ultraviolet absorber so as to enable adjustment with an oil component that is incompatible with the ultraviolet absorber. Development (for example, see Patent Document 7) has been made, and an example of blending into a solid powder cosmetic is presented.

  Against this background, UV absorbers in the UV-A region, which are highly polar oils, dimethicone, phenyl-modified dimethicone, and methoxycinnamate are combined in a specific ratio, and in a prescription system with a lot of silicone, an ultraviolet absorber It has not been known at all that it can be a powder cosmetic with improved solubility, high UV-A protective effect, makeup, and excellent usability.

Japanese Unexamined Patent Publication No. 64-7941 JP-A-62-260716 JP 2010-132648 A JP 2007-204459 A JP 2009-91307 A JP 2009-91307 A JP 7-145175 A

  An object of the present invention is to provide a powder cosmetic having a high UV-A protective effect, a makeup, and excellent usability.

In view of such circumstances, the present inventors have intensively researched for powder cosmetics having a high UV-A protective effect, makeup, and excellent usability, and as a result, ultraviolet absorbers, dimethicones, phenyl-modified dimethicones, methoxysilicates. The present inventors have found that a cosmetic comprising a combination of cinnamates at a specific ratio solves the problem and has reached the present invention. That is, the present invention is as follows.
(1) A powder cosmetic comprising the following (a) to (d) in an oil phase ,
(A) Ultraviolet absorber that absorbs ultraviolet rays in the UV-A region (b) Dimethicone (c) Phenyl-modified dimethicone (d) Methoxycinnamic acid ester
The dimethicone content is 15.0 to 25.0 mass% with respect to the total amount of oil agent, and the methoxycinnamate content is 15.0 to 35.0 mass% with respect to the total amount of oil agent. Powder cosmetics.
(2), wherein the ultraviolet absorber that absorbs ultraviolet rays UV-A region is a diethylamino hydroxybenzoyl hexyl benzoate and / or t- butyl methoxy-di benzoyl methane (1) cosmetic according.
(3) The cosmetic according to (1) or (2), wherein the content of the ultraviolet absorber that absorbs ultraviolet rays in the UV-A region is 5.0 to 30.0 mass% with respect to the total amount of the oil agent. .
(4) The cosmetic according to any one of (1) to (3), wherein the phenyl-modified dimethicone content is 0.1 to 30.0% by mass relative to the total amount of the oil agent.

  ADVANTAGE OF THE INVENTION According to this invention, the powder cosmetics which have the high UV-A protective effect, makeup | decoration, and the outstanding usability are provided.

(1) Ultraviolet absorber that absorbs ultraviolet rays in the UV-A region of the present invention The powder cosmetic of the present invention contains an ultraviolet absorber that absorbs ultraviolet rays in the UV-A region (hereinafter referred to as UV-A absorber) as an essential component. contains. Such UV-A absorbers include 2-hydroxy-4-methoxybenzophenone, 2- (2′-hydroxy-5′-methylphenyl) benzotriazole, dimethoxybenzylidene dioxoimidazolidine 2-ethylhexyl propionate, bis (Resurushiniru) triazine, methylene bis-benzotriazolyl tetramethylbutylphenol, diethylamino hydroxybenzoyl hexyl benzoate, compounds such as t- butyl methoxy-di benzoyl methane, and the like. Among this, since it is excellent in ultraviolet absorptivity, diethylamino hydroxybenzoyl hexyl benzoate, and t- butyl methoxy-di benzoyl methane particularly preferred. Since these compounds have commercial products, commercial products can be used as they are. Specific commercial products "Uvinul A Plus" (manufactured by diethylamino hydroxybenzoyl hexyl benzoate BASF), "PARSOL1789" (t-manufactured butyl methoxy-di benzoyl methane DSM Nutrition Japan K.K.) can be exemplified.

  The content of these UV-A absorbers is preferably 0.1 to 30.0% by mass, more preferably 5.0 to 10.0% by mass, of the total amount of oil in the powder cosmetic. preferable. When the content is lower than the lower limit, the protective effect against ultraviolet rays in the A region may be insufficient. When the content is higher than the upper limit, the protective effect against ultraviolet rays in the A region reaches its peak, and the feeling of use decreases. It may occur and is not preferable.

(2) Dimethicone of the present invention The powder cosmetic of the present invention contains dimethicone as an essential component. The dimethicone here has a kinematic viscosity at 25 ° C. of preferably 1.5 to 200 cSt, and more preferably 2 to 100 cSt. Since such a dimethicone has a commercial product, the commercial product can be used as it is. Specific commercial products include “KF-96L series”, “KF-96A series” (manufactured by Shin-Etsu Chemical Co., Ltd.), “TSF451 series” (manufactured by Momentive), “SH200 series” (manufactured by Dow Corning Toray) Etc.

  The content of these dimethicones is preferably 5.0 to 75.0 mass%, more preferably 15.0 to 25.0 mass%, of the total amount of the oil agent in the powder cosmetic. If the content is less than the lower limit, the makeup and usability may not be sufficient. If the content is more than the upper limit, the content of the UV-A absorber is reduced, and the protective effect against ultraviolet rays in the A region is reduced. Is not preferable.

(3) Phenyl-modified dimethicone of the present invention The powder cosmetic of the present invention contains phenyl-modified dimethicone as an essential component. Since such a phenyl-modified dimethicone has a commercial product, the commercial product can be used as it is. Specific commercial products include “KF-50-100cs”, “KF-53”, “KF-54”, “KF-56A” (manufactured by Shin-Etsu Chemical Co., Ltd.), “SH556” (Toray Dow Corning) Product), "SF1555" (manufactured by Momentive), "PDM20" (manufactured by Asahi Kasei Wacker Silicone), and the like.

  The content of these phenyl-modified dimethicone is preferably 0.1 to 30.0% by mass and more preferably 5.0 to 25.0% by mass in the total amount of the oil agent in the powder cosmetic. If the content is less than the lower limit, the solubility of the UV-A absorber in the oil phase may be lowered, and if it is more than the upper limit, the usability such as makeup collapse may be lowered.

(4) Methoxycinnamic acid ester of the present invention The powder cosmetic of the present invention contains methoxycinnamic acid ester as an essential component. Since such a methoxycinnamate ester has a commercially available product, the commercially available product can be used as it is. Specific examples of commercially available products, "Uvinul MC80" (manufactured by BASF), "Parsol MCX" (manufactured by DSM Nutri-cane Nji Yapan Co., Ltd.), and the like "Eusolex 2292" (manufactured by Merck & Co., Inc.).

  The content of these methoxycinnamates is preferably 0.3 to 50.0%, and more preferably 15.0 to 35.0% by mass, of the total amount of oil in the powder cosmetic. If the content is less than the lower limit, the solubility of the UV-A absorbent in the oil phase may be lowered, and if it is more than the upper limit, the usability (freshness) may be lowered.

(5) Powder cosmetics of the present invention The powder cosmetics of the present invention can contain optional components that are usually used in cosmetics in addition to the above essential components. Optional ingredients include, for example, macadamia nut oil, avocado oil, corn oil, olive oil, rapeseed oil, sesame oil, castor oil, safflower oil, cottonseed oil, jojoba oil, palm oil, palm oil, liquid lanolin, hardened palm oil, hardened oil Oil, wax, liquid paraffin, squalane, pristane, ozokerite, paraffin, ceresine, petrolatum, microcrystalline Hydrocarbons such as 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, methylphenylpolysiloxa , Chain polysiloxanes such as diphenylpolysiloxane, cyclic polysiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexanesiloxane, amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, fluorine Oil agents such as silicone oil such as modified polysiloxane such as modified polysiloxane, fatty acid soap (sodium laurate, sodium palmitate, etc.), anionic surfactants such as potassium lauryl sulfate, triethanolamine ether of alkyl sulfate, stearyl chloride Cationic surfactants such as trimethylammonium, benzalkonium chloride, laurylamine oxide, imidazoline-based amphoteric surfactants (2-cocoyl-2-imidazolinium Muhydroxide-1-carboxyethyloxy disodium salt, etc.), betaine surfactants (alkyl betaine, amide betaine, sulfobetaine, etc.), amphoteric surfactants such as acylmethyltaurine, sorbitan fatty acid esters (sorbitan mono) Stearates, sorbitan sesquioleate, etc.), glycerin fatty acids (glyceryl monostearate, etc.), propylene glycol fatty acid esters (propylene glycol monostearate, etc.), 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-sorbite monolaurate, etc.), POE glycerin fatty acid ester (POE-glycerin monoisostearate, etc.), POE fatty acid esters (polyethylene glycol monooleate, POE distearate, etc.), POE alkyl ethers (POE2-octyldodecyl ether, etc.), POE alkyl phenyl ethers (POE nonyl phenyl ether, 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.), sucrose Nonionic surfactants such as fatty acid esters and alkyl glucosides, polyethylene glycol, glycerin, 1,3-butylene glycol, erythritol, sorbitol, xylitol, maltitol, propylene glycol , Dipropylene glycol, diglycerin, isoprene glycol, 1,2-pentanediol, 2,4-hexylene glycol, 1,2-hexanediol, 1,2-octanediol and other polyhydric alcohols, 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, hydroxy Cyethyl guar gum, carboxymethyl guar gum, dextran, keratosulfuric acid, locust bean gum, succinoglucan, carolinic acid, chitin, chitosan, carboxymethyl chitin, agar, polyvinyl alcohol, polyvinylpyrrolidone, carboxyvinyl polymer, sodium polyacrylate, polyethylene Thickeners such as glycol and bentonite, surface may be treated, powders such as mica, talc, kaolin, synthetic mica, calcium carbonate, magnesium carbonate, silicic anhydride (silica), aluminum oxide, barium sulfate Surface may be treated, bengara, yellow iron oxide, black iron oxide, cobalt oxide, ultramarine, bitumen, titanium oxide, zinc oxide inorganic pigments, surface may be treated, titanium mica, fish Phosphorous foil, bismuth oxychloride, etc. Red, No. 202, Red No. 228, Red No. 226, Yellow No. 4, Blue No. 404, Yellow No. 5, Red No. 505, Red No. 230, Red No. 223, Orange No. 201 Red 213, yellow 204, yellow 203, blue 1, green 201, purple 201, red 204, and other organic dyes, polyethylene powder, polymethyl methacrylate, nylon powder, organopolysiloxane elastomer, Organic powders such as cellulose powder, urethane powder, silk powder and the like, powders coated with a bio-component-like polymer such as a copolymer of methacryloyloxyalkylphosphorylcholine and alkyl methacrylate, paraaminobenzoic acid UV absorber, anthranilic acid UV absorber, salicylic acid UV absorber, cinnamic acid UV absorber UV absorbers such as sugar-based UV absorbers, lower alcohols such as ethanol and isopropanol, vitamin A or derivatives thereof, vitamin B6 hydrochloride, vitamin B6 tripalmitate, vitamin B6 dioctanoate, vitamin B2 or derivatives thereof, vitamins B12, vitamin B such as vitamin B15 or its derivatives, α-tocopherol, β-tocopherol, γ-tocopherol, vitamin E such as vitamin E acetate, vitamin D such as vitamin D, vitamin H, pantothenic acid, panthetin, etc. Can be preferably exemplified, and can be contained as an optional component.

  The powder cosmetics of the present invention can be applied to base makeup materials such as powder foundations, pressed powders and loose powders, and point makeup materials such as powder eye colors and cheek colors, but in terms of highlighting their usability. A base makeup material having a large use area is preferable. Moreover, the powder cosmetics of this invention are obtained by processing an essential component and an arbitrary component in accordance with a conventional method.

  Hereinafter, the present invention will be described in more detail with reference to examples, but it goes without saying that the present invention is not limited to such examples.

<Examples 1-5, Comparative Examples 1-5>
According to the formulation shown in Table 1 below, a powder foundation that is a powder cosmetic of the present invention and a powder foundation of a comparative example were prepared. First, (A) was mixed with a Hensyl mixer, and then (B) was added and further mixed uniformly. A product obtained by pulverizing this uniform mixture with a pulverizer was subjected to pressure molding.

<Test Example 1>
(UV-A defense effect)
The UV-A protective effect (PFA) of Foundation 1 was measured and PA classification was carried out in accordance with “UVA prevention effect measurement method standard” (1995) formulated by the Japan Cosmetic Industry Association. The results are shown in Table 2.

<Test Example 2>
(Solubility evaluation)
After mixing and adjusting (B) shown in Table 2, the presence or absence of separation was visually confirmed. Evaluation was made as ○ for those that became uniform without separation, and × for those that became separated. The results are shown in Table 2.

<Test Example 3>
(Usability evaluation)
The evaluation items and evaluation criteria for performing sensory evaluation on makeup and usability (freshness) when each sample is applied by five skilled evaluators are as follows. In the evaluation, an average value of five people was obtained and used as a score for each sample. The results are shown in Table 2.
1) Make-up: Pretty, 5; Somewhat; 4, Neither; 3, Almost none; 2, No; 1
2) Feel refreshed: feel quite; 5, feel slightly; 4, say neither; 3, do not feel; 2, do not feel at all; 1

As is clear from the results of Tables 1 and 2, the powder cosmetics of the present invention containing the components (a) to (d) have improved solubility of the oil agent compared to the comparative example, Excellent UV protection effect, and also excellent makeup and feeling of use (freshness). These effects are the effects obtained by making the oil phase uniform when contained in the oil phases (a) to (d), as is clear from the comparison between Examples and Comparative Examples. Further, in the powder cosmetics of the present invention, diethylamino hydroxybenzoyl hexyl benzoate and when it is contained t- butyl methoxy-di benzoyl methane, as compared with the case of containing the dimethoxybenzylidene ethylidenedioxy oxoimidazo limp propionic acid 2-ethylhexyl In a small content, a similar protective effect against ultraviolet rays in the region A was exhibited, and among them, the content of hexyl diethylaminohydroxybenzoyl benzoate was smaller. From this fact, as the UV-A absorbers for use in the powder cosmetics of the present invention, diethylamino hydroxybenzoyl hexyl benzoate, t- butyl methoxy-di benzoyl methane are preferred, diethylamino hydroxybenzoyl hexyl benzoate and more preferably it is shown It was.

<Example 4>
Loose powder, which is a powder cosmetic of the present invention, was prepared according to the formulation shown in Table 3 below.
First, (A) was mixed with a hensil mixer, and then pulverized with a pulverizer equipped with a round hole screen. Further, while the mixture was stirred again with a Henschel mixer, (B) was added and further mixed uniformly. This homogeneous mixture was pulverized with a pulverizer equipped with a herringbone screen.

  The loose powder of Example 4, which is the powder cosmetic of the present invention, was confirmed to be uniformly dispersed in the oil agent (B), and was an excellent powder cosmetic in terms of “make-up” and “usability (freshness)”. .

  The present invention can be used for cosmetics and the like.

Claims (4)

A powder cosmetic comprising the following (a) to (d) in an oil phase ,
(A) Ultraviolet absorber that absorbs ultraviolet rays in the UV-A region (b) Dimethicone (c) Phenyl-modified dimethicone (d) Methoxycinnamic acid ester
The dimethicone content is 15.0 to 25.0 mass% with respect to the total amount of oil agent, and the methoxycinnamate content is 15.0 to 35.0 mass% with respect to the total amount of oil agent. Powder cosmetics. The cosmetic of claim 1, wherein the ultraviolet absorber that absorbs ultraviolet rays UV-A region is a diethylamino hydroxybenzoyl hexyl benzoate and / or t- butyl methoxy-di benzoyl methane. The cosmetic according to claim 1 or 2, wherein the content of the ultraviolet absorber that absorbs ultraviolet rays in the UV-A region is 5.0 to 30.0 mass% with respect to the total amount of the oil agent. The cosmetic according to any one of claims 1 to 3, wherein the content of the phenyl-modified dimethicone is 0.1 to 30.0 mass% with respect to the total amount of the oil agent.