JP6255004B2 - Aerosol type sunscreen cosmetics - Google Patents

Description

  The present invention relates to an aerosol type sunscreen cosmetic using bisethylhexyloxyphenol methoxyphenyl triazine and a water-in-oil emulsion containing a specific ester oil as a stock solution and using a liquefied gas as a propellant, and more specifically The present invention relates to an aerosol-type sunscreen cosmetic that is excellent in stability, does not clog, can be uniformly sprayed on the skin and hair, and is transparent and has no stickiness.

  Sunscreen cosmetics are intended to block ultraviolet rays in the sun and protect the skin from the harmful effects of ultraviolet rays, and contain metal oxides such as zinc oxide and titanium oxide, and organic ultraviolet absorbers. Therefore, sunscreen cosmetics having a high UV protection effect have been developed. However, when a large amount of the metal oxide is blended, there is a problem that the squeaky feeling of the powder occurs during use, the finish becomes whitish and unnatural, and the organic UV absorber having a high UV protection effect includes Many of them are poorly soluble (slightly soluble in water and non-polar oils) and may cause stability problems, and various studies have been made. (For example, see Patent Documents 1 and 2)

  Aerosol cosmetics, on the other hand, are easy to apply to a wide range of skin and hair, especially when sprayed, and can be applied evenly to areas that are difficult to reach without wetting the fingers with cosmetics. Therefore, it is very easy to use. Therefore, it is also applied as a sunscreen cosmetic (see, for example, Patent Documents 3 and 4).

JP 2010-100353 A JP 2011-236201 A Special table 2008-543939 JP 2010-270060 A

  Aerosol-type cosmetics are pressurized special environments that coexist with liquefied gas and compressed gas, which are propellants, so powders such as metal oxides that have UV protection effects and poorly soluble UV absorbers are used as aerosols. Aggregation and crystallization occur in the container, and as a result, the UV protection effect is reduced. In particular, in the case of a spray, there is a problem that clogging occurs and sprayability is deteriorated or sprayed unevenly. Further, finer spray particles can be formed by using the liquefied gas. Accordingly, an object of the present invention is to stably spray a poorly soluble ultraviolet absorbent having a high ultraviolet protection ability in the coexistence with a liquefied gas, so that the ultraviolet protection effect is high, and the skin and hair are uniformly sprayed. It is possible to provide a highly transparent aerosol-type sunscreen without stickiness.

  In view of such a situation, the present inventors have intensively studied, and as a result, combined a liquefied gas with a water-in-oil emulsion containing bisethylhexyloxyphenol methoxyphenyltriazine, which is a hardly soluble ultraviolet absorber, and a specific ester oil. By blending, it has a high UV protection effect, can be uniformly sprayed on the skin and hair, and completed a highly transparent aerosol type sunscreen with no stickiness.

That is, the present invention provides the following.
[1] The following components (a) to (c);
(A) Bisethylhexyloxyphenol methoxyphenyltriazine 1-3 mass%
(B) 5 to 50% by mass of a diester of propylene glycol and a fatty acid having 8 to 10 carbon atoms
(C) Ethylhexyl methoxycinnamate 5-15% by mass
An aerosol containing a stock solution that is a water-in-oil emulsion containing liquefied gas as a propellant, and the components (a), (b), and (c) in the water-in-oil emulsion An aerosol type sunscreen cosmetic characterized in that the mass ratio thereof is in the range of 1:10 to 1:20.
[2] The aerosol type sunscreen cosmetic according to [1], wherein the water-in-oil emulsion further contains a component (d) silicone oil.
[3] The filling ratio of the water-in-oil emulsion and the liquefied gas in the aerosol type sunscreen cosmetic is 15 to 40% by mass of the water-in-oil emulsion and 60 to 85% of the liquefied gas. [1] Alternatively, the aerosol type sunscreen cosmetic according to [2].

  The aerosol type sunscreen of the present invention can be stably blended with a poorly soluble UV absorber, and therefore has a high UV protection effect, a non-sticky and transparent finish, and has a long jetting property. It is good and can be sprayed uniformly on the skin and hair, and has the advantage of excellent usability.

Hereinafter, the configuration of the present invention will be described in detail. In addition, when a numerical range is represented by “X to Y” in this specification, the range includes the values X and Y at both ends.
The aerosol-type sunscreen cosmetic of the present invention is filled with a stock solution that is a water-in-oil emulsion containing the components (a) to (c) and a liquefied gas that is a propellant in a container having a pressure-resistant valve. Is. The aerosol can be adjusted to a form such as spray (fog) or foam (foam) according to the purpose of use, and is used after spraying or extending by hand. In the present invention, a spray form is preferable from the viewpoint that it can be uniformly sprayed on the skin and hair. Therefore, the filling ratio of the water-in-oil emulsion and the liquefied gas in the aerosol is preferably 15 to 40% by mass (hereinafter simply referred to as “%”) of the water-in-oil emulsion, and 60 to 85% of the liquefied gas. More preferably, the water-in-oil emulsion is 20 to 30% and the liquefied gas is 70 to 80% (the total of the water-in-oil emulsion and the liquefied gas is 100%). This is because, within this range, no crystal precipitation is observed over time, and when the aerosol-type sunscreen cosmetic is prepared, it is excellent in stability and can be sprayed uniformly.

(Water-in-oil emulsion: undiluted solution)
The component (a) used in the present invention is an ultraviolet absorber that is hardly soluble in water and nonpolar oil, and the component is 2,4-bis-[{4- (2-ethylhexyloxy) -2- Hydroxy} -phenyl] -6- (4-methoxyphenyl) -1,3,5-triazine. The INCI name (International Nomenclature Cosmetic Labeling Name) is bisethylhexyloxyphenol methoxyphenyl triazine, and a commercially available product is Tinosorb S (manufactured by BASF).

  The content of component (a) in the water-in-oil emulsion of the present invention is 1 to 3%. If the content is less than 1%, the UV protection effect is lowered, and if it exceeds 3%, the elongation becomes heavy when stretched by hand, resulting in poor feel.

  Component (b) used in the present invention is a diester of propylene glycol and a fatty acid having 8 to 10 carbon atoms, and is an ester oil that is liquid at 25 ° C. Specific examples include propylene glycol dicaprate, propylene glycol dicaprylate, and di (capryl / capric acid) propylene glycol, and one or more of these can be used.

  The content of component (b) in the water-in-oil emulsion of the present invention is 5 to 50%, more preferably 15 to 40%. If the content is less than 5%, the component (a) may precipitate over time and cause clogging. If it exceeds 50%, the oily feeling of the skin after use becomes strong and the feel is poor. Become. When the content is 15 to 40%, it can be sprayed uniformly and the touch can be very excellent.

  Component (c) ethylhexyl methoxycinnamate used in the present invention is an ultraviolet absorber that is liquid at 25 ° C. The content of the component (c) in the water-in-oil emulsion is 5 to 15%, more preferably 7 to 12%. If the content is less than 5%, the component (a) may precipitate over time and cause clogging, and if it exceeds 15%, stickiness occurs and the feel becomes inferior. When the content is 7 to 12%, it can be sprayed uniformly and the touch can be very excellent.

  In the water-in-oil emulsion of the present invention, the mass ratio (a) :( b) + (c) of the component (a) and the components (b) and (c) is preferably 1:10 to 1:20. More preferably, it is 1:10 to 1:15. Within this range, a cosmetic having excellent stability and no stickiness can be obtained.

  The water-in-oil emulsion of the present invention can further contain component (d) silicone oil. Component (d) is not particularly limited, but is preferably liquid at 25 ° C., and octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, hexamethyldisiloxane, octamethyltrisiloxane, decamethyl. Examples thereof include tetrasiloxane, methyltrimethicone, caprylyltrimethicone, dimethylpolysiloxane, methylphenylpolysiloxane, and the like. One or more of these can be used. In general, it is known that many of the ultraviolet absorbers have difficulty in compatibility with silicone oil, and component (a) is no exception, so the content of silicone oil is preferably as small as possible. However, considering the feeling of use as a sunscreen cosmetic, it is preferable to add about 1 to 20% in the water-in-oil emulsion. Within this range, the stability is good and a refreshing feeling is obtained. When component (d) silicone oil is blended, it is used in combination with silicone powder such as polymethylsilsesquioxane, which is widely used as a feel modifier, or with a metal oxide silicone surface-treated product that is an ultraviolet protection component. It is also preferable from the viewpoint of improving stability.

  Moreover, in the water-in-oil emulsion of the present invention, as long as it does not impair the effects of the present invention, oil components other than the components (b) to (d) are added as necessary to the usual cosmetics. Components, surfactants, aqueous components, UV absorbers other than components (a) and (c), powders, water-soluble polymers, humectants, antioxidants, anti-fading agents, preservatives, medicinal components, stabilization Agents, pigments, fragrances and the like can be appropriately blended for imparting various effects.

  The oil component is not particularly limited as long as it is usually used in cosmetics in addition to the components (b) to (d), and it is a solid oil, semi-solid oil, liquid oil of origin such as animal oil, vegetable oil, synthetic oil, etc. Regardless of the nature of the volatile oil, hydrocarbons, fats and oils, waxes, hardened oils, ester oils, fatty acids, higher alcohols, fluorinated oils, lanolin derivatives, oily gelling agents, Examples include oil-soluble resins.

  Specifically, liquid paraffin, squalane, petrolatum, paraffin wax, ceresin wax, microcrystalline wax, ethylene propylene copolymer, montan wax, fisher trops wax, light liquid isoparaffin, hydrocarbons such as isododecane, molasses, olive oil, castor Oils, oils such as mink oil, macadamian nut oil, beeswax, carnauba wax, candelilla wax, wax such as gay wax, jojoba oil, cetyl isooctanoate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate , Glyceryl trioctanoate, diglyceryl diisostearate, diglyceryl triisostearate, glyceryl tribehenate, diisostearyl malate, neodioctanoate Esters such as n-tyl glycol, tridecyl isononanoate, isotridecyl isononanoate, alkyl benzoate, diisopropyl sebacate, diethylhexyl sebacate, cholesterol fatty acid ester, N-lauroyl-L-glutamate di (cholesteryl behenyl octyldodecyl), Stearyl alcohol, cetyl alcohol, lauryl alcohol, oleyl alcohol, isostearyl alcohol, higher alcohols such as behenyl alcohol, fluorine-based oils such as perfluorodecane, perfluorooctane, perfluoropolyether, lanolin, lanolin acetate, lanolin fatty acid isopropyl Lanolin derivatives such as lanolin alcohol, dextrin octoate, dextrin laurate, dextrin palmitate, Oily gelling agents such as dextrin succinate, dextrin stearate, dextrin behenate, coconut oil fatty acid dextrin, (palmitic acid / octanoic acid) dextrin, sucrose fatty acid ester, starch fatty acid ester, 12-hydroxystearic acid, calcium stearate, Examples thereof include oil-soluble resins such as hydrogenated rosin acid pentaerythrityl and specific alkyl methyl polysiloxane acrylate. These oily components can be used singly or in combination of two or more as required, and among these, alkyl benzoate, diisopropyl sebacate, and diethylhexyl sebacate are preferred from the viewpoint of stability.

  As the surfactant, any surfactant that is generally used in cosmetics can be used. Nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, etc. Is mentioned. Specifically, glycerin fatty acid ester and its alkylene glycol adduct, polyglycerin fatty acid ester and its alkylene glycol adduct, sorbitan fatty acid ester and its alkylene glycol adduct, sucrose fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyalkylene Examples thereof include alkyl co-modified organopolysiloxane and polyether-modified organopolysiloxane. These surfactants can be used singly or in combination of two or more as required. However, in order to obtain a water-in-oil emulsion, it is essential to add a nonionic surfactant having an HLB of 7 or less. Among these, from the viewpoint of stability, a nonionic surfactant comprising an ester bond of polyhydroxystearic acid such as PEG-30 dipolyhydroxystearic acid or a lipophilic silicone surfactant such as PEG-9. Polydimethylsiloxyethyl dimethicone, lauryl PEG-9 polydimethylsiloxyethyl dimethicone and the like are preferable.

  Examples of the aqueous component include so-called water such as deionized water, distilled water, purified water, hot spring water, plant-derived steam distilled water such as rose water, lavender water, and the like, which are soluble in water and can be used as a solvent. For example, alcohols such as ethyl alcohol and isopropyl alcohol, glycols such as propylene glycol, 1,2-pentylene glycol, 1,3-butylene glycol, dipropylene glycol, and polyethylene glycol, glycerin, diglycerin, polyglycerin, and the like Glycerols.

  Examples of the ultraviolet absorber include benzophenone, PABA, cinnamic acid, salicylic acid, and silicon. Specifically, 2- [4- (diethylamino) -2-hydroxybenzoyl] benzoic acid hexyl ester, oxybenzone, 4-tert-4′-methoxydibenzoylmethane, 2-hydroxy-4-methoxybenzophenone, salicylic acid-2 -Ethylhexyl, ethyl paradihydroxypropyl benzoate, dimethoxybenzylidene dioxoimidazolidine 2-ethylhexyl propionate, 2,2'-methylenebis [6- (2H-benzotriazol-2-yl) -4- (1,1,3 3-tetramethylbutyl) phenol], (1,3,5) -triazine-2,4-bis [{4- (2-ethylhexyloxy) -2-hydroxy} -phenyl] -6- (4-methoxy Phenyl) -1,3,5-triazine, dimethicodiethylbenzalmalonate, 2-hydride Carboxymethyl-4-methoxybenzophenone-5-sulfonic acid and its sodium salt, polysilicone-15, and the like.

  Any powder can be used as long as it is commonly used in cosmetics. For the purpose of adjusting the feel, for example, silicone powder, talc, sericite, silica, mica, kaolin, calcium carbonate, etc. Powders such as aluminum oxide, polyethylene powder, polymethyl methacrylate, and nylon powder can be used. In addition, metal oxide powder can be used to impart an ultraviolet protection effect, and examples thereof include zinc oxide, titanium oxide, cerium oxide, and the like, which can be used singly or in combination of two or more. . These powders are treated by known surface treatment methods such as silica treatment, alumina treatment, aluminum hydroxide treatment, fluorine compound treatment, silicone treatment, silicone resin treatment, pendant treatment, silane coupling agent treatment, titanium coupling agent treatment. Surface treatment may be performed by a method such as silane treatment, oil agent treatment, N-acylated lysine treatment, polyacrylic acid treatment, metal soap treatment, acrylic resin treatment, or metal oxide treatment. However, in the present invention, when a large amount of the metal oxide powder is blended, the transparency may decrease and the squeaky feeling may become strong. Therefore, the blending amount is 10% or less in the water-in-oil emulsion, Preferably it is 5% or less.

  Examples of humectants include proteins, mucopolysaccharides, collagen, elastin, and keratin. Examples of antioxidants include α-tocopherol and ascorbic acid. Examples of cosmetic ingredients include vitamins, anti-inflammatory agents, herbal medicines, and preservatives. Examples thereof include paraoxybenzoic acid ester, phenoxyethanol, and 1,2-pentanediol.

  The production method of the water-in-oil emulsion of the present invention is not particularly limited and is prepared by a conventional method. For example, the component (a) is heated and dissolved in the component (b) and the component (c), It is obtained by mixing with other oily components and a surfactant and emulsifying an aqueous component. Moreover, when mix | blending powder, it is preferable to emulsify, after fully disperse | distributing to an oil-based component or an aqueous component previously.

  The mass ratio (oil component) :( aqueous component) of the oil component and the aqueous component in the water-in-oil emulsion of the present invention varies depending on the formulation, but is preferably, for example, 1: 3 to 3: 1, more preferably 1. : 2 to 2: 1. Further, the content of the emulsifier in the water-in-oil emulsion of the present invention is an amount capable of stably emulsifying the aqueous component in the oil component, and is 0.1 to 5% of the water-in-oil emulsion. preferable. In such a range, it is possible to stably emulsify and no crystal precipitation is observed over time, and therefore, when used as an aerosol type sunscreen cosmetic, it is excellent in stability and can be sprayed uniformly.

(Propellant)
As the liquefied gas used in the present invention, one or more selected from hydrocarbons having 2 to 5 carbon atoms and dimethyl ether can be used in combination. Examples of the hydrocarbon having 2 to 5 carbon atoms include ethane, propane, n-butane, isobutane, n-pentane, isopentane, neopentane and the like. Among them, it is lipophilic in that it is compatible with the outer oil phase of the water-in-oil emulsion in the aerosol container, thereby reducing the interaction with the inner aqueous phase and improving the long-term stability. It is preferable to use hydrocarbons. Furthermore, from the viewpoint of safety at high temperatures, liquefied petroleum gas (hereinafter referred to as LPG 0.15) in which the pressure at 20 ° C. is adjusted to 0.15 MPa is preferable.

  The aerosol filling method of the present invention is not particularly limited, but the water-in-oil emulsion prepared by a conventional method is filled into a pressure-resistant container, an aerosol valve is fixed to the container, and then a liquefied gas is injected through the valve. To do. Furthermore, it becomes an aerosol product by attaching an injection member according to the purpose to the aerosol valve. In addition, depending on the viscosity of the water-in-oil emulsion, the oil phase and water phase or powder for forming the water-in-oil emulsion are separately filled for homogenization in the filling process. A liquefied gas may be injected.

  Hereinafter, the present invention will be described in more detail with reference to examples. Note that these do not limit the present invention.

Examples 1-6 and Comparative Examples 1-8:
Aerosol-type sunscreen cosmetics were prepared by the composition shown in Table 1 and the following production method. The obtained cosmetic was evaluated by the following method, and the results are shown in Table 1.

A: Components (1) to (3) and (6) to (8) are dissolved by heating.
B: Components (4) to (5) and (9) and (10) are mixed with A, and then (11) is uniformly dispersed.
C: Components (12) to (16) were mixed and added to B for emulsification to obtain a stock solution.
D: 9 g of the stock solution obtained in C was filled into a pressure-resistant container made of transparent glass and aluminum, and then the valve was fixed, and 21 g of LPG 0.15 was filled into the pressure-resistant container through the valve to obtain an aerosol type sunscreen cosmetic. .

(Evaluation Method 1: Crystal Precipitation)
The aerosol compositions of Examples 1 to 6 and Comparative Examples 1 to 8 were filled in a pressure-resistant container made of transparent glass, left as an accelerated test for stability over time at −20 ° C. for 2 weeks, and then returned to 25 ° C. The presence or absence of crystal precipitation was confirmed visually.
[Criteria]
(Judgment): (Evaluation)
○: Crystal precipitation is not observed.
X: Crystal precipitation is observed.

(Evaluation method 2: No clogging)
The aerosol compositions of Examples 1 to 6 and Comparative Examples 1 to 8 were made of aluminum pressure-resistant containers (specifications; stem: 0.4 m diameter, housing: 0.8 × 0.55 mm diameter, button: 0.5 mm diameter). Samples stored for 1 month each at 5 ° C. and 40 ° C. were returned to room temperature, sprayed at 25 ° C. at intervals of 10 seconds, and sprayability when used to the end was evaluated according to the following evaluation criteria.
[Criteria]
(Judgment): (Evaluation)
○: Can be used in a uniform spray state until the end.
X: The sprayed state was uneven and clogged on the way and could not be used.

(Evaluation Method 3: Transparency)
30 g of the aerosol compositions of Examples 1 to 6 and Comparative Examples 1 to 8 were filled in an aluminum pressure resistant container, sprayed from a position 15 cm away to a 10 cm black hair bundle for 3 seconds, and the finished state immediately after was visually observed. Observed.
[Criteria]
(Judgment): (Evaluation)
○: Finished transparently.
×: The whitish color is conspicuous.

(Evaluation method 4: no stickiness)
After spraying the aerosol compositions of Examples 1 to 6 and Comparative Examples 1 to 8 on the left forearm for 3 seconds, the 20 cosmetic cosmetic evaluation panels were stretched by hand and used. Each “no stickiness” was evaluated in five stages according to the following evaluation criteria, given a score for each sample, and the average score of all panels was determined according to the following criteria.
[Evaluation criteria]
(Score): (Result)
5 points: Very good 4 points: Good 3 points: Normal 2 points: Slightly bad 1 point: Bad [Criteria]
(Judgment): (Average score)
◎: 4.5 to 5.0 points ○: 3.5 to less than 4.5 points Δ: 2.0 to less than 3.5 points ×: Less than 1.0 to 2.0 points

As is clear from the results in Table 1, the aerosol type sunscreen cosmetics of Examples 1 to 6 were not precipitated with bisethylhexyloxyphenol methoxyphenyl triazine, and were stable at both low and high temperatures. It was excellent in usability with no stickiness in touch.
On the other hand, Comparative Examples 1 to 3 in which different ester oils were blended in place of component (B) had crystallized precipitation of bisethylhexyloxyphenol methoxyphenyl triazine, which is problematic in terms of stability. Triethylhexanoin And cetyl octanoate was inferior in touch. Comparative Example 4 with a large amount of component (B) was sticky and inferior in feel. In Comparative Example 5 in which component (C) was not blended, precipitation of crystals was observed, and Comparative Example 6 having a large amount of component (C) was inferior in touch. When the content ratio of component (A): component (B) + (C) deviated, crystal precipitation was observed, which was problematic in terms of stability.
From the above results, it was shown that an aerosol type sunscreen with excellent stability and no stickiness can be obtained by combining the components of the present invention.

Example 7: Aerosol type sunscreen (stock solution component) (%)
1. Bisethylhexyloxyphenol methoxyphenyl triazine
3
2. Propylene glycol dicaprate 30
3. Ethylhexyl methoxycinnamate 7.5
4). Decamethylcyclopentasiloxane 5
5. Phenoxyethanol 0.3
6). Sorbitan sesquistearate 0.25
7). PEG-9 polydimethylsiloxyethyl dimethicone 0.5
8). Hydrophobized fine particle titanium oxide (Note 1) 5
9. Phenylbenzimidazolesulfonic acid 3
10. Triethanolamine 1.68
11. Dipropylene glycol 5
12 Purified water 38.77
(Note 1) Fine particle titanium oxide MTY-110M3S (manufactured by Teika)

(Production method)
A: Disperse component (8) with appropriate amounts of component (2) and component (7).
B: Components (1) to (3) are dissolved by heating.
C: Components (4) to (6) and B are mixed with A and dispersed uniformly.
D: Components (9) to (12) are mixed, added to C and emulsified to obtain a stock solution.
E: 6 g of the stock solution obtained in D was filled in an aluminum pressure-resistant container, and then a valve was fixed, and LPG 0.15 24 g was filled in the pressure-resistant container through the valve to obtain an aerosol type sunscreen cosmetic.

  In Example 7, immediately after injection, the aerosol-attached portion looks whitish, but immediately becomes transparent, and no precipitation of bisethylhexyloxyphenol methoxyphenyltriazine is observed, there is no clogging, and there is no stickiness in the touch. It was a sunscreen fee.

Example 8: Aerosol type sunscreen (stock solution component) (%)
1. Bisethylhexyloxyphenol methoxyphenyl triazine
3
2. Propylene glycol dicaprylate 25
3. Ethylhexyl methoxycinnamate 7.5
4). Polysilicone-15 3
5. Alkyl benzoate (C12-C15) 5
6). Diisopropyl sebacate (Note 2) 5
7). Dipolyhydroxystearic acid PEG-30 0.2
8). Polyglyceryl-2 diisostearate 0.1
9. PEG-9 polydimethylsiloxyethyl dimethicone 0.2
10. Silicone coated fine particle zinc oxide (Note 3) 5
11. Phenylbenzimidazolesulfonic acid 3
12 Triethanolamine 1.68
13. Ethanol 15
14 Purified water 26.32
(Note 2) IPSE (Nippon Seika Co., Ltd.)
(Note 3) FINEX-50S-LP2 (manufactured by Sakai Chemical Co., Ltd.)

(Production method)
A: Components (1) to (3) are dissolved by heating.
B: Components (4) to (10) are mixed with A and dispersed uniformly.
C: Components (11) to (14) are mixed, added to B, and emulsified.
D: After filling 9 g of the stock solution obtained in C into an aluminum pressure resistant container, the valve was fixed, and 21 g of LPG 0.15 was filled into the pressure resistant container through the valve to obtain an aerosol type sunscreen cosmetic.

  In Example 8, precipitation of bisethylhexyloxyphenol methoxyphenyl triazine was not observed, and it was an aerosol type sunscreen with no stickiness in touch.

Example 9: Aerosol type sunscreen (stock solution component) (%)
1. Bisethylhexyloxyphenol methoxyphenyl triazine
3
2. Diethylaminohydroxybenzoyl hexyl benzoate (Note 4)
1
3. Di (caprylic / capric) propylene glycol 20
4). Ethyl hexyl methoxycinnamate 10
5. Dimethicone (Note 5) 5
6). Diethylhexyl sebacate (Note 6) 5
7). Dipolyhydroxystearic acid PEG-30 0.25
8). PEG-9 polydimethylsiloxyethyl dimethicone 0.25
9. Ethanol 15
10. Purified water 40.5
(Note 4) UVINUL A PLUS (BASF)
(Note 5) SH200C FLUID 6CS (Toray Dow Corning)
(Note 6) Neosole-EHS (manufactured by Nippon Seika Co., Ltd.)

(Production method)
A: Components (1) to (4) are dissolved by heating.
B: Components (5) to (8) are mixed with A and dispersed uniformly.
C: Components (9) to (10) are mixed, added to B, and emulsified.
D: After filling 9 g of the stock solution obtained in C into an aluminum pressure resistant container, the valve was fixed, and 15 g of LPG 0.15 and 6 g of dimethyl ether were filled into the pressure resistant container through the valve to obtain an aerosol type sunscreen cosmetic.

  In Example 9, precipitation of bisethylhexyloxyphenol methoxyphenyl triazine was not observed, and it was an aerosol type sunscreen having no stickiness in touch.

Example 10: Aerosol-type sunscreen (stock solution component) (%)
1. Bisethylhexyloxyphenol methoxyphenyl triazine
3
2. Diethylaminohydroxybenzoyl hexyl benzoate (Note 4)
3.3
3. Di (caprylic / capric) propylene glycol 40
4). Ethylhexyl methoxycinnamate 7.5
5. Polysilicone-15 3
6). Dipolyhydroxystearic acid PEG-30 0.25
7). PEG-9 polydimethylsiloxyethyl dimethicone 0.25
8). Phenoxyethanol 0.5
9. Polymethylsilsesquioxane 5
10. Dipropylene glycol 5
11. Methylparaben 0.15
12 Purified water 32.05

(Production method)
A: Components (1) to (4) are dissolved by heating.
B: After mixing components (5) to (8) with A, (9) is uniformly dispersed.
C: Components (10) to (12) were mixed and added to B for emulsification to obtain a stock solution.
D: 9 g of the stock solution obtained in C was filled into a pressure-resistant container made of transparent glass and aluminum, and then the valve was fixed, and 21 g of LPG 0.15 was filled into the pressure-resistant container through the valve to obtain an aerosol type sunscreen cosmetic. .

  Example 10 was an aerosol type sunscreen with no bisethylhexyloxyphenol methoxyphenyl triazine precipitated and no stickiness on the touch.

Claims (3)

The following components (a) to (c);
(A) Bisethylhexyloxyphenol methoxyphenyltriazine 1-3 mass%
(B) 5 to 50% by mass of a diester of propylene glycol and a fatty acid having 8 to 10 carbon atoms
(C) Ethylhexyl methoxycinnamate 5-15% by mass
An aerosol type sunscreen cosmetic containing a stock solution that is a water-in-oil emulsion containing liquefied gas and a propellant, wherein the components (a) and (b) in the water-in-oil emulsion (b) ) Aerosol-type sunscreen cosmetics, wherein the mass ratio ((a) :( b) + (c)) to (c) is in the range of 1:10 to 1:20. The aerosol-type sunscreen cosmetic according to claim 1, wherein the water-in-oil emulsion further contains a component (d) silicone oil.   The filling ratio of the water-in-oil emulsion and the liquefied gas in the aerosol-type sunscreen cosmetic is 15 to 40% by mass of the water-in-oil emulsion and 60 to 85% by mass of the liquefied gas. Aerosol-type sunscreen cosmetics described in 1.