JP6659079B2 - Sunscreen cosmetics - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a sunscreen cosmetic having a high UV protection effect and a good feeling of use, which effect is maintained for a long period of time.

  Sunscreen cosmetics are required not only to have an excellent effect of protecting the skin from ultraviolet rays, but also to be excellent in usability and usability. Since sunscreen cosmetics are frequently used in summer, they are required to have a good feeling of use, such as being excellent in freshness when applied.

  To meet these demands, attempts have been made to make sunscreen cosmetics into aerosol form. (See, for example, Patent Documents 1, 2, and 3) However, in these techniques, although excellent usability is obtained, the usability is not sufficiently satisfactory in summer use. In addition, although a high protective effect against ultraviolet light is exhibited immediately after use, it is not sufficient as to whether the effect can be maintained over time. Accordingly, there has been a need for a sunscreen cosmetic having good usability and feeling of use and capable of maintaining an ultraviolet protection effect for a long period of time.

  On the other hand, aerosol-type sunscreen cosmetics containing an ultraviolet absorber, a silicone oil agent occupying a certain percentage or more of the stock solution, and containing an alkyl-modified silicone modified with an alkyl group having 2 to 12 carbon atoms are used. It was not known that both the properties and feeling of use were excellent, and that a high UV protection effect was maintained for a long time.

JP 2010-120871 A JP-A-2004-224706 JP 2010-90056 A

  An object of the present invention is to provide a sunscreen cosmetic which is excellent in usability and feeling of use and can maintain a high ultraviolet protection effect for a long period of time.

Aforementioned, in view of the problems of the prior art, the inventors have found that excellent use for property and feeling, and a result of research extensive seeking sustained excellent sunscreen cosmetic of high ultraviolet protection effects, ultraviolet absorbing An aerosol-type sunscreen cosmetic that contains an oil-modified silicone agent and occupies a certain percentage or more of a stock solution in a stock solution and contains an alkyl-modified silicone modified with an alkyl group having 2 to 12 carbon atoms solves the problem. And found the present invention. That is, the present invention is as described below.
(1) An aerosol-type sunscreen cosmetic comprising a stock solution containing the following components A), B) and C) and a propellant.
A) 30% by mass or more of silicone oil agent B) Ultraviolet absorber C) Alkyl-modified silicone modified with an alkyl group having 2 to 12 carbon atoms (2) The content of the ultraviolet absorber in the stock solution is 5.0 to 5.0 of the total stock solution. The aerosol-type sunscreen cosmetic according to (1), which is 15.0% by mass.
(3) As the ultraviolet absorber, one or two or more selected from ultraviolet absorbers that absorb ultraviolet rays in the A region and one or two or more ultraviolet absorbers that absorb ultraviolet rays in the B region are contained. The aerosol-type sunscreen cosmetic according to (1) or (2), which is characterized in that:
(4) The content of the alkyl-modified silicone modified with an alkyl group having 2 to 12 carbon atoms in the stock solution is 0.1 to 10.0% by mass of the whole stock solution (1) to (3). ) The aerosol-type sunscreen cosmetic according to any one of the above.
(5) The aerosol-type sunscreen cosmetic according to any one of (1) to (4), further comprising a branched chain fatty acid in the stock solution.

The present invention can provide a sunscreen cosmetic that is excellent in usability and feeling of use and can maintain a high ultraviolet protection effect for a long period of time.

Hereinafter, the present invention will be described in detail.
<1> Silicone oil which is an essential component of the aerosol type sunscreen cosmetic of the present invention The aerosol type sunscreen cosmetic of the present invention is characterized by containing 30% by mass of the silicone oil in the stock solution. The silicone oil agent of the present invention is, specifically, dimethylpolysiloxane, methylphenylpolysiloxane, diphenylpolysiloxane, diphenylsiloxyphenyltrimethicone, trimethylsiloxyphenyldimethicone, dimethylpolysiloxane modified with alkyl having 13 or more carbon atoms. And the like, and cyclic silicones such as decamethylcyclopentasiloxane and dodecamethylcyclohexasiloxane.

  Silicones having emulsifying ability such as polyether-modified silicone and polyglycerin-modified silicone, partially cross-linked silicones such as (dimethicone / vinyl dimethicone) crosspolymer, dimethicone / (PEG-10 / 15) crosspolymer, and acrylic-modified silicone Is not included in the silicone oil agent of the present invention.

The content of the silicone oil agent in the aerosol-type sunscreen cosmetic of the present invention is 30% by mass or more in the stock solution, preferably 35% by mass or more, more preferably 45% by mass or more. By setting the content of the silicone oil within the above range, a refreshing and good feeling in use can be obtained.

<2> Ultraviolet absorber which is an essential component of the aerosol type sunscreen cosmetic of the present invention The aerosol type sunscreen cosmetic of the present invention contains an ultraviolet absorber as its essential component. In the present invention, the ultraviolet absorber plays a role of absorbing ultraviolet rays and protecting the skin from ultraviolet rays, and an ultraviolet absorber (hereinafter referred to as UV-A absorber) which absorbs ultraviolet rays in the A region and a B region. It is preferable to use together an ultraviolet absorber (hereinafter, referred to as a UV-B absorber) that absorbs ultraviolet rays.

Specific examples of the UV-A absorber include 2-hydroxy-4-methoxybenzophenone, 2- (2′-hydroxy-5′-methylphenyl) benzotriazole, 2-methoxyhexyl dimethoxybenzylidene dioxoimidazolidine propionate. And bis (resulcinyl) triazine, methylenebisbenzotriazolyltetramethylbutylphenol, hexyl diethylaminohydroxybenzoylbenzoate, T-butylmethoxybenzoylmethane, and the like. Among them, hexyl diethylaminohydroxybenzoyl benzoate and T-butylmethoxybenzoylmethane are particularly preferred because of their excellent ultraviolet absorbing ability. Since commercially available products exist for these compounds, commercially available products can be used as they are. Specific examples of commercially available products include “UVINUL A + GRANULAR” (manufactured by Hexyl Diethylaminohydroxybenzoyl Benzoate BASF) and “PARSOL 1789” (T
-Butylmethoxybenzoylmethane DSM).

Specific examples of the UV-B absorber include 2-ethylhexyl paramethoxycinnamate, 2-ethylhexyl 2-cyano-3,3-diphenylacrylate, dimethicodiethylbenzalmalonate, 2,4,6 -Trianilino-P- (carbo-2'-ethylhexyl-1'-oxy) -1,3,5-triazine, 2-hydroxy-4-methoxybenzophenone, homomenthyl salicylate, octyl salicylate, 2-phenylbenzimidazole-5- Compounds such as sulfonic acid are exemplified. Since commercially available products exist for these compounds, commercially available products can be used as they are. Specific examples of commercially available products include "Ubinal MC80" (2-ethylhexyl paramethoxycinnamate manufactured by BASF) and "Ubinal T150" (2,4,6-trianilino-P- (carbo-2'-ethylhexyl-1'-). Oxy) -1,3,5-triazine (BASF), "Ubinal M40" (2-hydroxy-4-methoxybenzophenone, BASF), "Palsol SLX" (Dimethicodiethylbenzalmalonate DSM), "PARSOL 340" (manufactured by 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate DSM), "PARSOL HMS" (manufactured by Homomenthyl Salicylate DSM), "PARSOL EMS" (manufactured by Octyl Salicylate DSM), "EUSOLEX232" (2-phenylbenzimidazole-5- Rufon acid manufactured by Merck & Co., Inc.) and the like.

Further, as an ultraviolet absorber that absorbs ultraviolet light over the A and B regions, bisethylhexyloxyphenol methoxyphenyl triazine is exemplified, and is commercially available as "Tinosorb Tinosorb S" (manufactured by BASF SE).

The content of the ultraviolet absorber is 5.0 to 15.0% by mass of the total amount of the undiluted solution of the aerosol-type sunscreen cosmetic in the total amount of the UV-A absorber and the UV-B absorber, and 8.0 to 8.0. It is preferably 12.0% by mass. If the content is less than the lower limit, the protective effect against ultraviolet light may be insufficient, and if it is more than the upper limit, the protective effect against ultraviolet light will level off even if the content is increased, and when applying cosmetics It is not preferable because the usability may decrease such as increase in elongation.

<3> Alkyl-modified silicone modified with an alkyl group having 2 to 12 carbon atoms, which is an essential component of the aerosol type sunscreen cosmetic of the present invention. The aerosol type sunscreen cosmetic of the present invention has 2 to 2 carbon atoms as an essential component. It contains an alkyl-modified silicone modified with 12 alkyl groups (hereinafter referred to as alkyl-modified silicone). Preferable examples of such alkyl-modified silicone include ethyltrisiloxane, octyltrisiloxane, caprylylmethicone, and the like. Since there are commercial products of these alkyl-modified silicones, these commercial products can be obtained and used.
Specific commercially available products include “SILSOFT (registered trademark) ESS” and “SILSOFT (registered trademark) 034” (all manufactured by Momentive Performance Materials, Inc.) and “Silicone SS3408” (Dow Corning Toray) Manufactured).

The content of the alkyl-modified silicone in the aerosol-type sunscreen cosmetic of the present invention is preferably 0.1 to 10.0% by mass in the stock solution of the aerosol-type sunscreen cosmetic, and is preferably 0.5 to 5.0% by mass. % Is more preferable. When the content is in this range, the ultraviolet protection effect can be maintained for a long time.

<4> Propellant which is an essential component of the aerosol type sunscreen cosmetic of the present invention The aerosol type sunscreen cosmetic of the present invention contains a propellant as an essential component. As a propellant, so-called liquefied natural gas (LPG) used for ordinary aerosols
Is preferred. Since there is a commercial product of these LPGs, such a commercial product can be purchased and mixed with a stock solution to obtain an aerosol cosmetic.

  The mixing ratio of the stock solution and the propellant in the aerosol-type sunscreen cosmetic is preferably in the range of 90:10 to 10:90 by mass, and more preferably in the range of 60:40 to 20:80. Below the lower limit, the protrusion of the aerosol cosmetic from the container may be insufficient, which is not preferable. On the other hand, above the upper limit, the amount of the undiluted solution to be discharged is too small, and the effect as a sunscreen cosmetic may be insufficient, which is not preferable.

<5> Branched-chain fatty acids of the aerosol-type sunscreen cosmetics of the present invention The aerosol-type sunscreen cosmetics of the present invention preferably contain a branched-chain fatty acid because the ultraviolet protection effect can be further maintained for a long period of time. Preferred examples of such branched fatty acids include isobutyric acid, 4-methylpentanoic acid, 2-ethylhexanoic acid, and isostearic acid.

  The content of the branched chain fatty acid is preferably from 0.01 to 1.0% by mass, more preferably from 0.05 to 0.5%, based on the total amount of the stock solution of the aerosol-type sunscreen cosmetic. By adopting such a range, the ultraviolet protection effect is maintained for a longer period.

<6> Aerosol-type sunscreen cosmetic of the present invention The aerosol-type sunscreen cosmetic of the present invention is an alkyl-modified silicone modified with at least 30% by mass of a silicone oil agent and an alkyl group having 2 to 12 carbon atoms, which are essential components. And a stock solution containing a UV absorber and, if appropriate, a branched chain fatty acid, and a propellant.

In addition, the aerosol-type sunscreen cosmetics can contain optional components usually used in cosmetics in addition to the above-mentioned essential components as long as the effects of the present 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, hydrogenated coconut oil, hardened Oil, Mocro, hydrogenated castor oil, beeswax, candelilla wax, carnauba wax, ibotaro wax, lanolin, reduced lanolin, hard lanolin, jojoba wax and other oils, waxes, liquid paraffin, squalane, pristane, ozokerite, paraffin, ceresin, vaseline, micro Hydrocarbons such as crystallin 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 Higher alcohols such as rucol, behenyl alcohol, octyl dodecanol, myristyl alcohol, cetostearyl alcohol, etc., cetyl isooctanoate, isopropyl myristate, hexyldecyl isostearate, diisopropyl adipate, di-2-ethylhexyl sebacate, cetyl lactate, malic acid Diisostearyl, ethylene glycol di-2-ethylhexanoate, neopentyl glycol dicaprate, glycerin di-2-heptylundecanoate, glycerin tri-2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, triglycol Synthetic ester oils such as trimethylolpropane isostearate and pentaneerythritol tetra-2-ethylhexanoate, and modified policies such as polyether-modified polysiloxane Anionic surfactants such as xane, fatty acid soaps (sodium laurate, sodium palmitate, etc.), potassium lauryl sulfate, alkylethanol sulfate triethanolamine ether, cationic interfaces such as stearyltrimethylammonium chloride, benzalkonium chloride, laurylamine oxide Surfactants, imidazoline-based amphoteric surfactants (such as 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt), betaine-based surfactants (such as alkyl betaine, amidobetaine, and sulfobetaine) , Amphoteric surfactants such as acylmethyltaurine, sorbitan fatty acid esters (sorbitan monostearate, sorbitan sesquioleate, etc.), glycerin fatty acids (glycerin monostearate, etc.), propylene glycol Rechol fatty acid esters (such as propylene glycol monostearate), hydrogenated castor oil derivatives, glycerin alkyl ether, POE sorbitan fatty acid esters (such as POE sorbitan monooleate and polyoxyethylene sorbitan monostearate), and POE sorbit fatty acid esters (such as POE-sorbitol monolaurate, etc.), POE glycerin fatty acid esters (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 type, POE / POP alkyl ethers (POE / PO 2-decyltetradecyl ether, etc.), tetronics, POE castor oil / hardened castor oil derivatives (POE castor oil, POE hardened castor oil, etc.), non-ionic surfactants such as sucrose fatty acid ester, alkyl glucoside, 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, Polyhydric alcohols such as 2-hexanediol and 1,2-octanediol, moisturizing components such as sodium pyrrolidonecarboxylate, lactic acid, and sodium lactate, guar gum, quince seed, carrageenan, galactan, gum arabic, pec , 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 Sulfuric acid, hydroxyethyl guar gum, carboxymethyl guar gum, dextran, keratosulfate, locust bean gum, succinoglucan, caronic acid, chitin, chitosan, carboxymethyl chitin, agar, polyvinyl alcohol, polyvinylpyrrolidone, carboxyvinyl polymer, sodium polyacrylate Thickeners such as polyethylene glycol, bentonite, surface 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, navy blue , Zinc oxide inorganic pigments, surface-treated composite pigments such as iron oxide titanium dioxide sintered body, surface-treated titanium mica, fish phosphorus foil, pearlescent agents such as bismuth oxychloride Kinds, Lake 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 No. Organic dyes such as No. 213, Yellow No. 204, Yellow No. 203, Blue No. 1, Green No. 201, Purple No. 201, Red No. 204, polyethylene powder, polymethyl methacrylate, naphthalene Ron powder, organic powders such as organopolysiloxane elastomers, ethanol, lower alcohols such as isopropanol, vitamin A or its derivatives, vitamin B ₆ hydrochloride, vitamin B ₆ tripalmitate, vitamin B ₆ dioctanoate, vitamin B ₂ Or a derivative thereof, vitamin B such as vitamin B ₁₂ , vitamin B ₁₅ or a derivative thereof, vitamin E such as Α-tocopherol, β-tocopherol, γ-tocopherol, vitamin E acetate, vitamin D, vitamin H, pantothenic acid , Pantethine, pyrroloquinoline quinone and other vitamins.

  The aerosol cosmetic of the present invention can be prepared, for example, by preparing a stock solution containing the above essential components and optional components, and then mixing it with a propellant in an aerosol container.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to the following Examples.
<Examples 1 to 4, Comparative Examples 1 to 3>
The components in Table 1 were stirred and mixed at room temperature to form a uniform solution, and a stock solution was prepared. This stock solution and commercially available LPG were filled into an aerosol container at a mass ratio of 30:70 to prepare an aerosol cosmetic.

＊ １）「シリコーンＫＦ５４」 信越化学工業株式会社製
＊ ２）「シリコーンＳＳ３４０８」 東レ・ダウコーニング株式会社製
＊ ３）「ＳＩＬＳＯＦＴ（登録商標） ０３４」モメンティブ・パフォーマンス・マテリアルズ社製
＊ ４）「イソステアリン酸ＥＸ」 高級アルコール工業株式会社製
＊ ５）「ＴＩＮＯＳＯＲＢ Ｓ」 ＢＡＳＦ社製
＊ ６）「ＵＶＩＮＵＬ Ａ＋ＧＲＡＮＵＬＡＲ」 ＢＡＳＦ社製
＊ ７）「パルソール１７８９」 ＤＳＭ社製
＊ ８）「ノムコートＴＡＢ−Ｒ」 日清オイリオグループ株式会社製
＊ ６）「パルソールＳＬＸ」ＤＳＭ社製

* 1) "Silicone KF54" manufactured by Shin-Etsu Chemical Co., Ltd. * 2) "Silicone SS3408" manufactured by Dow Corning Toray * 3) "SILSOFT (registered trademark) 034" manufactured by Momentive Performance Materials * 4) Isostearic acid EX "manufactured by Higher Alcohol Industry Co., Ltd. * 5)" TINSORB S "manufactured by BASF * 6)" UVINUL A + GRANULAR "manufactured by BASF * 7)" Palsol 1789 "manufactured by DSM * 8)" Nomcoat TAB-R " * 6) "Palsol SLX" manufactured by DSM

<Test Example 1> Measurement of SPF value The SPF value when each of the aerosol cosmetics of Examples and Comparative Examples was applied was measured by the method of ISO24444. Table 2 shows the results.

<Test Example 2> Evaluation of PFA value The PFA value when each of the aerosol cosmetics of Examples and Comparative Examples was applied was evaluated by the test method of JCIA1995 PFA. Table 2 shows the results.

<Test Example 3> Stability by storage of SPF value and PFA value Each aerosol cosmetic composition of Example and Comparative Example was left at 40 ° C. for 3 months, and after that, the SPF value and PFA according to Test Examples 1 and 2. The value was measured. Table 2 shows the result of determining the value after standing when the value immediately after preparation was 100.

<Test Example 3> Evaluation of elongation during use Five expert evaluators performed a sensory evaluation on the refreshing feeling when each of the aerosol cosmetics of Examples and Comparative Examples was applied to the skin. The evaluation was performed based on the following evaluation criteria. In the evaluation, the average value of five persons was obtained and used as the score of the cosmetic. Table 2 shows the results.
Refreshing feeling compared to Comparative Example 1:
There are quite 5 points,
There are 4 equivalents, 3 points,
Somewhat not,
Not quite 1 point

表２から明らかなように本発明のエアゾール化粧料が長期間の保存によっても、紫外線防御効果が維持され、良好な使用感を有することが確認された。

As is evident from Table 2, it was confirmed that the aerosol cosmetic of the present invention maintained the ultraviolet protection effect even after long-term storage and had a good feeling of use.

  The present invention can be used as sunscreen cosmetics.

Claims (5)

An aerosol-type sunscreen cosmetic comprising a stock solution containing the following components A), B), C) and D) and a propellant.
A) 30% by mass or more of the total amount of the silicone oil in the stock solution B) UV absorber C) Alkyl-modified silicone modified with an alkyl group having 2 to 12 carbon atoms (however, A is not included in the silicone oil)
D) Branched fatty acids The aerosol-type sunscreen cosmetic according to claim 1, wherein the content of the silicone oil in the stock solution is 35% by mass or more of the total amount of the stock solution. The aerosol-type sunscreen cosmetic according to claim 1 or 2 , wherein the content of the ultraviolet absorber in the stock solution is 5.0 to 15.0% by mass of the total amount of the stock solution. As the ultraviolet absorber, one or two or more selected from ultraviolet absorbers that absorb ultraviolet rays in the A region and one or two or more ultraviolet absorbers that absorb ultraviolet light in the B region are contained. An aerosol-type sunscreen cosmetic according to any one of claims 1 to 3 . Content in the stock solution of alkyl-modified silicone modified with an alkyl group having 2 to 12 carbon atoms, any one of claims 1-4, characterized in that a 0.1 to 10.0% by weight of the stock solution total amount The aerosol-type sunscreen cosmetic according to item 1.