JP2015168642A - Sunscreen cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sunscreen cosmetic which has high ultraviolet ray-protection ability, sufficient covering power so as to be available for a base make-up, and finish with a transparent feeling on application.SOLUTION: (1) A sunscreen cosmetic comprises following components A and B: A) a particulate titanium dioxide; and B) a spherical polymethylsilsesquioxane powder of which particle size is 0.1-2.0 μm, and 90% of particles or more are 1.0 μm or less, and preferably content of the spherical polymethylsilsesquioxane powder of which particle size is 0.1-2.0 μm, and 90% of particles or more are 1.0 μm or less is 0.1-15.0 mass%.

Description

  The present invention relates to a sunscreen cosmetic, and more particularly to an ultraviolet protective cosmetic that has a high protective ability against ultraviolet rays and gives a transparent natural finish.

  The effect of ultraviolet rays on the skin is well known, and cosmetics that protect the skin from ultraviolet rays, so-called sunscreen cosmetics, are frequently used. As a means for imparting UV protection ability to cosmetics, so-called UV absorbers having absorption in the UV A region and the UV B region have been used for a long time. However, many of these ultraviolet absorbers are highly viscous oil agents, and have a problem that the usability is remarkably reduced when blended in cosmetics at a high concentration in order to obtain a high ultraviolet protection ability.

  In order to solve these problems of the ultraviolet absorber, so-called inorganic oxide fine particles having a primary particle diameter of submicrons have been used. Fine zinc oxide is used to provide protection against the ultraviolet light in the A region, and fine particle titanium dioxide is used to provide protection against the ultraviolet light in the B region. The ability to protect against ultraviolet rays is given. (For example, see Patent Document 1 and Patent Document 2)

  However, since fine titanium dioxide has a strong blue shift caused by fine particles, these cosmetics have a problem of giving a pale and unnatural appearance when the cosmetic is applied on the skin. In order to solve these problems, cosmetics using an ultraviolet absorber and a fine particle inorganic oxide in combination (for example, see Patent Documents 3 and 4), fine particle titanium dioxide, and a powder whose reflection interference color is orange to yellow or gold. Cosmetics to be used in combination (for example, see Patent Document 5) have been tried, but the effect is still not sufficient. Furthermore, a cosmetic (see, for example, Patent Document 6) in which fine titanium dioxide and a colored pigment having a certain hue are used in combination to reduce the amount of pigment-grade titanium dioxide has been tried. There is a problem that the covering power may be insufficient due to the low content of high-grade titanium dioxide.

  Accordingly, there has been a demand for a sunscreen cosmetic that has a high protective ability against ultraviolet rays, has a sufficient covering power, and can be used as a base make-up and can provide a transparent finish when applied. On the other hand, it has not been known that sunscreen cosmetics containing fine particle titanium dioxide and spherical polymethylsilsesquioxane powder having a specific particle size distribution satisfy the above requirements.

JP 2008-208044 A JP 2009-155332 A JP 2007-145722 A JP 2010-222349 A JP 2000-319156 A JP 2013-18766 A

  An object of the present invention is to provide a sunscreen cosmetic that has a high protective ability against ultraviolet rays, has a sufficient covering power, and can be used as a base make-up and has a transparent finish when applied.

In light of this situation, as a result of earnest research for sunscreen cosmetics that have a high protective ability against ultraviolet rays, have sufficient covering power, and can be used as a base make-up, and have a transparent finish when applied, fine particles The present inventors have found that a sunscreen cosmetic containing titanium dioxide and spherical polymethylsilsesquioxane powder having a specific particle size distribution solves the problems, and has reached the present invention. That is, the present invention is as follows.
(1) A sunscreen cosmetic comprising the following components A and B:
A) Fine particle titanium dioxide B) Spherical polymethylsilsesquioxane powder having a particle size of 0.1 to 2.0 μm and 90% or more and 1.0 μm or less (2) Content of fine particle titanium dioxide The sunscreen cosmetic according to (1), characterized by being 1.0 to 15.0% by mass.
(3) The content of spherical polymethylsilsesquioxane powder having a particle size of 0.1 to 2.0 μm and 90% or more of 1.0 μm or less is 0.1 to 15.0% by mass. The sunscreen cosmetic according to (1) or (2), wherein
(4) The sunscreen cosmetic according to any one of (1) to (3), further comprising fine-particle zinc oxide.
(5) The sunscreen cosmetic according to any one of (1) to (4), which is in an emulsifier form.

  According to the present invention, there is provided a sunscreen cosmetic that has a high protective ability against ultraviolet rays, has a sufficient covering power, and can be used as a base make-up and has a transparent finish upon application.

(1) Fine particle titanium dioxide which is an essential component of the sunscreen cosmetic of the present invention.
The sunscreen cosmetic of the present invention contains fine particle titanium dioxide as an essential component. The fine particles herein refer to those having a primary particle diameter (according to electron microscope observation) in the range of about 10 to 60 nm. The surface of the fine particle titanium dioxide of the present invention may be coated with an inorganic compound such as silica or alumina, or an organic compound such as fatty acid metal soap or silicone. The fine particle titanium dioxide of the present invention can be prepared by a conventional method such as thermal decomposition in a gas phase such as titanium tetrachloride. However, since there are many commercially available products, the commercially available products can be used as they are. Specific examples of such commercially available products include “MTY-110M3S” (manufactured by Teika Co., Ltd.), “MTY-02” (manufactured by Teika Co., Ltd.), “MT-100TV” (manufactured by Teika Co., Ltd.), “MT” -500HSA "(manufactured by Teika)," MT-100T "(manufactured by Teica)," MT-01 "(manufactured by Teica)," MT-10EX "(manufactured by Teica)," MT-05 " ”(Manufactured by Teika Co., Ltd.),“ MT-100Z ”(manufactured by Teika Co., Ltd.),“ MT-150EX ”(manufactured by Teika Co., Ltd.),“ MT-100AQ ”(manufactured by Teica Co., Ltd.),“ MT-100WP ”( (Taika Co., Ltd.), “MT-100SA” (Taika Corporation), “MT-500B” (Taika Corporation), “MT-500SA” (Taika Corporation), “MT-600B” "Taike Co., Ltd.", "MT-500SAS" (Taika Co., Ltd.), "Taipeku CR-50" (Ishihara Sangyo Co., Ltd.), "Taipeke TTO-M-1" (Ishihara Sangyo Co., Ltd.) "Taipeke TTO" -V4 "(manufactured by Ishihara Sangyo Co., Ltd.)," ST-455 "(manufactured by Titanium Industry Co., Ltd.)," STT-65C-S "(manufactured by Titanium Industry Co., Ltd.)," STT-30EHS "(manufactured by Titanium Industry Co., Ltd.) ), “Bayer Titanium R-KB-1” (manufactured by Bayer) and the like. In the present invention, when the fine particle titanium dioxide is included in the sunscreen cosmetic, the fine particle titanium dioxide is dispersed in an oil agent in advance rather than directly mixing with other components constituting the sunscreen cosmetic. It is preferable to take a step of mixing with other components constituting the sunscreen cosmetic. By taking such a step, it becomes possible to more uniformly contain the fine particle titanium dioxide in the sunscreen cosmetic.

In the sunscreen cosmetic of the present invention, the content of fine particle titanium dioxide is preferably 1.0 to 15.0% by mass, and 2.0 to 10.0% by mass with respect to the entire cosmetic. More preferred. If the content is lower than the lower limit, the protective effect against ultraviolet rays may be insufficient. If the content is higher than the upper limit, the protective effect against ultraviolet rays will reach its peak even if the content is increased, and the sunscreen cosmetics are applied to the skin. When applied, a pale appearance may be conspicuous, which is not preferable.

Hereinafter, the manufacture example of the oil agent dispersion paste of fine particle titanium dioxide is shown.
<Production Example 1>
Particulate titanium dioxide “MT-100TV” (manufactured by Teika Co., Ltd.) 50 g, decamethylcyclopentasiloxane 46 g, and sorbitan sesquiisostearate 4 g were placed in a coball mill (manufactured by Shinko Pantech Co., Ltd.) and mixed and pulverized for 8 hours. A titanium paste 1 was obtained.

<Production Example 2>
The fine particles in Production Example 1 were replaced with “Taipaque TTO-M-1” (manufactured by Ishihara Sangyo Co., Ltd.), and the same operation as in Production Example 1 was performed to obtain fine titanium dioxide paste 2.

(2) Spherical polymethylsilsesquioxane powder which is an essential component of the sunscreen cosmetic of the present invention The sunscreen cosmetic of the present invention has a particle size of 0.1 to 2.0 μm, and 90% or more is 1.0 μm. A spherical polymethylsilsesquioxane powder (hereinafter referred to as a spherical silicone powder) having the following particle size is contained as an essential component. Such spherical silicone powder can be obtained, for example, by preparing an ordinary spherical polymethylsilsesquioxane manufacturing method and then performing an operation such as classification. However, since there are commercially available products, such commercial products are available. It is also possible to obtain and use. Specific examples of commercially available products include “silicone powder MSP-N050” (manufactured by Nikko Rica Corporation).

The content of the spherical silicone powder dry powder in the sunscreen cosmetic of the present invention is preferably 0.1 to 15.0 mass%, more preferably 0.5 to 10.0, based on the total amount of the cosmetic. % By mass. By setting it in such a range, a sufficient finish and a transparent finish can be obtained.

<3> Fine-particle zinc oxide of the present invention The sunscreen cosmetic of the present invention preferably has fine-particle zinc oxide because the ultraviolet protection effect is further enhanced. The fine particles herein refer to those having a primary particle diameter (according to electron microscope observation) in the range of about 10 to 60 nm. The surface of the fine particle zinc oxide of the present invention may be coated with an inorganic compound such as silica or alumina, or an organic compound such as fatty acid metal soap or silicone. Such fine particle zinc oxide can be produced by a conventional method, but since there are many commercially available products, the commercially available products can be used as they are. As such commercially available products, specifically, “MZ-300” (manufactured by Teika Co., Ltd.), “MZY-303S” (manufactured by Teika Co., Ltd.), “MZ-306X” (manufactured by Teika Co., Ltd.), “MZ” -500 "(manufactured by Teika)," MZY-505S "(manufactured by Teika)," MZ-506X "(manufactured by Teica)," MZ-510HPSX "(manufactured by Teica)," WSX-MZ " -700 "(manufactured by Teika Co., Ltd.)," SANT-UFZO-450 "(manufactured by Teika Co., Ltd.)," SANT-UFZO-500 "(manufactured by Miyoshi Kasei Co., Ltd.)," FZO-50 "(manufactured by Ishihara Sangyo Co., Ltd.) ), “Maxlite ZS-032” (manufactured by Showa Denko KK), “Maxlite ZS-032D” (manufactured by Showa Denko KK), and the like. In the present invention, when the particulate zinc oxide is contained in the sunscreen cosmetic, the particulate zinc oxide is previously dispersed in the oil agent to make a paste rather than directly mixing with other components constituting the sunscreen cosmetic. It is preferable to take a step of mixing with other components constituting the sunscreen cosmetic. By taking such a process, it becomes possible to make particulate zinc oxide more uniformly contained in sunscreen cosmetics.

In the sunscreen cosmetic of the present invention, the content of fine zinc oxide is preferably 1.0 to 15.0% by mass, and 2.0 to 10.0% by mass with respect to the entire cosmetic. More preferred. If the content is lower than the lower limit, the additive effect for improving the protective effect against ultraviolet rays may be insufficient, and if the content is higher than the upper limit, the additive effect reaches a peak even if the content is increased, and the sunscreen cosmetics are used. When applied on the skin, whitishness may be noticeable.

Hereinafter, the manufacture example of the oil agent dispersion paste of fine particle zinc oxide is shown.

<Production Example 3>
A fine zinc oxide paste 1 was obtained by replacing fine particle titanium dioxide in Production Example 1 with fine particle zinc oxide “Maxlite ZS-032” (manufactured by Showa Denko KK) in the same manner as in Production Example 1.

<Production Example 4>
The fine zinc oxide paste 2 was obtained by replacing fine particle titanium dioxide in Production Example 1 with fine particle zinc oxide “FZO50” (manufactured by Ishihara Sangyo Co., Ltd.) in the same manner as in Production Example 1.




<4> The sunscreen cosmetic of the present invention.
The sunscreen cosmetic of the present invention is characterized by containing fine particle titanium dioxide and spherical silicone powder as essential components, and optionally containing fine particle zinc oxide.

Furthermore, the sunscreen cosmetic of the present invention can contain optional components that are usually used in cosmetics in addition to the above-mentioned essential components as long as the effects of the invention are not impaired. Such 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, coconut oil, palm oil, liquid lanolin, hardened coconut oil, hardened Oil, molasses, hydrogenated castor oil, beeswax, candelilla wax, carnauba wax, botarou, lanolin, reduced lanolin, hard lanolin, jojoba oil, waxes, liquid paraffin, squalane, pristane, ozokerite, paraffin, ceresin, petrolatum, micro Hydrocarbons such as crystallin wax, oleic acid, isostearic acid, lauric acid, myristic acid, palmitic acid, higher fatty acids such as stearic acid, behenic acid, undecylenic acid, cetyl alcohol, stearyl alcohol, isostearyl High alcohols such as alcohol, behenyl alcohol, octyldodecanol, 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, methylphenylpolysiloxane Chain polysiloxanes such as xane and diphenylpolysiloxane, cyclic polysiloxanes 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-imidazo Linium 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 (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 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 group Polyhydric alcohols such as cole, dipropylene glycol, diglycerin, isoprene glycol, 1,2-pentanediol, 2,4-hexylene glycol, 1,2-hexanediol, 1,2-octanediol, pyrrolidonecarboxylic 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, hydride Roxyethyl 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, 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 treated, cobalt oxide, ultramarine, bitumen, zinc oxide inorganic pigments, surface treated, composite pigments such as iron oxide titanium dioxide sintered body, surface treated Good, mica titanium, fish phosphorus foil Pearl agents such as bismuth oxychloride, may be surface-treated, fine zinc oxide, may be raked Red No. 202, Red No. 228, Red No. 226, Yellow No. 4, Blue No. 404, Yellow No. 5 No., Red No. 505, Red No. 230, Red No. 223, Orange No. 201, Red No. 213, Yellow No. 204, Yellow No. 203, Blue No. 1, Green No. 201, Purple No. 201, Red No. 204, etc. , Polyethylene powder, polymethyl methacrylate, nylon powder, organic powders such as organopolysiloxane elastomers, lower alcohols such as ethanol and isopropanol, paraaminobenzoic acid UV absorbers, anthranilic acid UV absorbers, salicylic acid UV Absorbers, B region UV absorbers such as cinnamic acid UV absorbers, vitamin A or its derivatives, vitamins Vitamin Bs such as hexahydrochloride, vitamin B6 tripalmitate, vitamin B6 dioctanoate, vitamin B2 or derivatives thereof, vitamin B12, vitamin B15 or derivatives thereof, α-tocopherol, β-tocopherol, γ-tocopherol, vitamin E acetate, etc. And vitamins such as vitamin E, vitamin D, vitamin H, pantothenic acid, panthetin, and pyrroloquinoline quinone.

Further, as the sunscreen cosmetics of the present invention, powder cosmetics such as powder foundation, oily cosmetics such as oil gel, water-in-oil or oil-in-water emulsified cosmetics, and the form thereof is not particularly limited, In the summer when sunscreen cosmetics are frequently used, a refreshing feeling of use is required, and thus emulsified cosmetics are preferable. The cosmetic of the present invention can be obtained by treating the above essential components and optional components by conventional methods.

  EXAMPLES Hereinafter, although this invention is demonstrated further in detail based on an Example, this invention is not limited to a following example.

<Examples 1-5, Comparative Examples 1-4>
According to the prescription shown in Table 1, the foundation of the sunscreen cosmetic of the present invention and the foundation of the comparative example were prepared. That is, component (a) was heated to 75 ° C. and mixed with stirring. Next, the component (b) was added to the component (b), and the mixture was stirred with a disper while continuing the heating, so that the component (b) was uniformly dispersed in the component (b). Furthermore, the component (c) was heated to 75 ° C. and mixed with stirring, and while maintaining the temperature at 75 ° C., the component (c) was added to the mixture of the component (a) and the component (b) with stirring and emulsified. Then, it cooled to room temperature and obtained the foundation. In addition, the number in a table | surface represents the mass%.

＊１）「ダーマリアルリーフＪ」 日揮触媒株式会社製
＊２）電子顕微鏡観察による粒径が０．１〜１．０μｍの二酸化チタン
＊３）「シリコーンパウダーＭＳＰ−Ｎ０５０」 日興リカ株式会社製

* 1) “Derma Real Leaf J” manufactured by JGC Catalysts Co., Ltd. * 2) Titanium dioxide with a particle size of 0.1 to 1.0 μm as observed by electron microscope * 3) “Silicone Powder MSP-N050” manufactured by Nikko Rica Co., Ltd.

<Test Example 1> Measurement of SPF value The SPF value was measured when the foundations of Examples 1 to 5 and Comparative Examples 1 to 4 were applied by the method of ISO24444. The results are shown in Table 2.

<Test Example 2> Evaluation of PA Value The PA value when the foundations of Examples 1 to 5 and Comparative Examples 1 to 4 were applied was evaluated by the test method of JCiA1995PFA. The results are shown in Table 2.

<Test Example 3> Evaluation of Finish at the Time of Application Sensory evaluation was performed on the finish when the makeup bases of Examples 1 to 5 and Comparative Examples 1 to 4 were applied by five skilled evaluators. Evaluation items and evaluation criteria are as follows. In the evaluation, the average value of five people was obtained and used as the score of the foundation. The results are shown in Table 2.

Compared to Comparative Example 1, the applied decorative film has a considerable sense of transparency ... 5 points ... 4 points equivalent ... …… 3 points are not enough ………… 2 points are rare ……… 1 point

Covering power (hiding power of skin imperfections) at the time of application is considerably higher than that of Comparative Example 1 ... 5 points ... 4 points equivalent ... ······························· 3

表２の結果から、明らかなように本発明の日焼け止め化粧料は高い紫外線防御効果を有し、透明感とカバー力を併せ持つ仕上がりが得られることが確認された。

As is apparent from the results in Table 2, it was confirmed that the sunscreen cosmetics of the present invention have a high UV protection effect, and a finish having both transparency and covering power can be obtained.

<Examples 6 to 10, Comparative Examples 5 to 8>
In accordance with the formulations shown in Table 3, sunscreen powders that are sunscreen makeup of the present invention and sunscreen powders of comparative examples were prepared. That is, the components in Table 3 (a) were mixed with a Henschel mixer and then pulverized with a pulverizer. Then, while stirring this mixture again with a Henschel mixer, add the component (b), continue mixing, take out the resulting mixture from the Henschel mixer, grind it again with a pulverizer, and use a mold in the usual way In a semi-automatic press, the alumina pan was filled into a sunscreen powder. In addition, the number in a table | surface represents the mass%. Evaluation of the SPF value, PA value, and finish at the time of application of the sunscreen powders of Examples 6 to 10 and Comparative Examples 5 to 8 were performed in the same manner as in Test Examples 1 to 3. The results are shown in Table 4.

＊１）「ＭＴ−１００ＳＡ」 テイカ株式会社製
＊２）電子顕微鏡観察による粒径が０．１〜１．０μｍの二酸化チタン
＊３）「ダーマリアルリーフＪ」 日揮触媒株式会社製
＊４）「シリコーンパウダーＭＳＰ−Ｎ０５０」 日興リカ株式会社製

* 1) “MT-100SA” manufactured by Teika Co., Ltd. * 2) Titanium dioxide having a particle size of 0.1 to 1.0 μm as observed by an electron microscope * 3) “Dermalial Leaf J” manufactured by JGC Catalysts Co., Ltd. Silicone powder MSP-N050 "made by Nikko Rica Co., Ltd.

表４の結果から、本発明の効果が粉末化粧料においても確認された。

From the results in Table 4, the effect of the present invention was confirmed also in the powder cosmetic.

Industrial application fields

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

Claims (5)

A sunscreen cosmetic comprising the following components A and B:
A) Fine particle titanium dioxide B) Spherical polymethylsilsesquioxane powder having a particle size of 0.1 to 2.0 μm and 90% or more and 1.0 μm or less The sunscreen cosmetic according to claim 1, wherein the content of the fine particle titanium dioxide is 1.0 to 15.0 mass%. The content of the spherical polymethylsilsesquioxane powder having a particle size of 0.1 to 2.0 μm and 90% or more and a particle size of 1.0 μm or less is 0.1 to 15.0% by mass. The sunscreen cosmetic according to claim 1 or 2, characterized in that: The sunscreen cosmetic according to any one of claims 1 to 3, further comprising fine-particle zinc oxide. The sunscreen cosmetic according to any one of claims 1 to 4, wherein the sunscreen cosmetic is in an emulsifier form.