JP6739923B2 - Skin cosmetics - Google Patents

Description

The present invention relates to skin cosmetics.

As techniques for improving the usability of skin cosmetics, there are those described in Patent Documents 1 and 2.
Patent Document 1 (Japanese Patent Laid-Open No. 2014-108935) contains a cationic surfactant having a specific structure and a specific nonionic surfactant in a specific ratio, a specific oil agent, a higher alcohol, and an SP value. Describes a skin cosmetic containing a compound in a specific range and water. According to the same document, when a cationic surfactant is used, the resulting composition becomes hard, it is difficult to spread on the skin, and there is a problem in the feeling of use such as sliminess and stickiness. It is said that the permeability of the oil-soluble component is improved, the feeling of use is excellent, and the stability is also good.

Patent Document 2 (JP 2010-90153 A) describes a gel cosmetic containing a crosslinked (meth)acrylic acid ester-based resin powder having specific physical properties. In addition, it is described that such gel cosmetics can impart a smooth feel without stickiness while ensuring non-stickiness to the skin, and further that the skin has excellent smoothness and non-stickiness. ing.

Further, although the technical fields are different, Patent Document 3 (JP 2007-22997 A) discloses that sphingosine, pseudo sphingosine, salts thereof, compounds selected from anionic surfactants and cationic surfactants, ceramides, glycerin. A monofatty acid ester, a higher alcohol, and an emulsion composition containing water in a specific ratio are described, and such an emulsion composition contains ceramides, has excellent storage stability, and suppresses precipitation of crystals. , It is described as having a high moisturizing effect.

JP, 2014-108935, A JP, 2010-90153, A JP, 2007-22997, A

However, in recent years, the characteristics required by consumers have increased, and the inventors of the present invention have conducted studies. As a result, in the techniques described in Patent Documents 1 to 3 described above, when trying to enhance the ultraviolet protection effect, for example, when sweating, etc. It became clear that there is still room for improvement in terms of stickiness.
Therefore, the present invention provides a skin cosmetic having an excellent ultraviolet protection effect and an excellent balance of the effects of non-stickiness, dryness, no powderiness, good spreadability and non-irritating feeling. It is a thing.

According to the invention,
The following components (A)-(D):
(A) Organic UV absorber 10 to 20% by mass,
(B) 3.5 to 11% by mass of crosslinked (meth)acrylate resin powder having a compressive strength of 0.7 to 10 kgf/mm ² obtained from the following test method and formula.
Compressive strength (kgf/mm ² )=2.8×load (kgf)/{π×particle diameter (mm)×particle diameter (mm)}
(In the above formula, the compressive strength is measured when the particles of the crosslinked (meth)acrylic acid ester-based resin powder are subjected to a compression test at 25° C. using a micro compression tester MCT-M200 manufactured by Shimadzu Corporation, It is a value calculated by the above formula from the load at the time of 10% deformation of the particle diameter and the particle diameter.)
(C) Water-soluble polymer 0.05 to 2.5% by mass, and (D) Ethanol 12 to 45% by mass
A skin cosmetic, comprising: and a mass ratio ((A)/(C)) of the content of the component (A) to the content of the component (C) is 58 to 200.

Advantageous Effects of Invention According to the present invention, it is possible to obtain a skin cosmetic having an excellent UV protection effect and an excellent balance of effects of non-greasiness, dryness, no powderiness, good spreadability and non-irritating feeling. You can

The skin cosmetic in the present embodiment is a composition containing the following components (A) to (D).
(A) Organic UV absorber 10 to 20% by mass,
(B) 3.5 to 11% by mass of crosslinked (meth)acrylate resin powder having a compressive strength of 0.7 to 10 kgf/mm ² obtained from the following test method and formula.
Compressive strength (kgf/mm ² )=2.8×load (kgf)/{π×particle diameter (mm)×particle diameter (mm)}
(In the above formula, when the compression strength of the resin powder particles is subjected to a compression test at 25° C. using a micro compression tester MCT-M200 manufactured by Shimadzu Corp. It is a value calculated by the above formula from the load and the particle size.)
(C) Water-soluble polymer 0.05 to 2.5% by mass,
(D) Ethanol 12-45 mass %.

Hereinafter, each component will be described with reference to specific examples. Each component may be used alone or in combination of two or more.
In addition, in the present embodiment, the feeling of use means that when a skin cosmetic is used, it does not have stickiness, and feels dryness, lack of powderiness, good spreadability and lack of irritation.

(Component (A))
The component (A) is an organic ultraviolet absorber.
As the component (A), an oil-soluble one is preferable, and a benzoic acid type ultraviolet absorber, anthranilic acid type ultraviolet absorber, salicylic acid type ultraviolet absorber, cinnamic acid type ultraviolet absorber, benzophenone type ultraviolet absorber, triazine type ultraviolet absorber Examples include absorbents and the like.
As a benzoic acid type ultraviolet absorber, para-aminobenzoic acid (PABA), glyceryl PABA, ethyldihydroxypropyl PABA, N-ethoxylate PABA ethyl ester, N-dimethyl PABA ethyl ester, N-dimethyl PABA butyl ester, Examples include N-dimethyl PABA amyl ester, octyl dimethyl PABA, hexyl diethylaminohydroxybenzoyl benzoate and the like. From the viewpoint of suppressing stickiness while enhancing the effect of absorbing ultraviolet rays, para-aminobenzoic acid and hexyl of diethylaminohydroxybenzoylbenzoic acid are preferable, and hexyl of diethylaminohydroxybenzoylbenzoic acid is more preferable.
Examples of the anthranilic acid-based ultraviolet absorber include homomenthyl-N-acetylanthranilate.
Examples of salicylic acid-based ultraviolet absorbers include amyl salicylate, menthyl salicylate, homomenthyl salicylate, octyl salicylate, phenyl salicylate, benzyl salicylate, and p-isopropanol phenyl salicylate.
As a cinnamic acid type ultraviolet absorber, octyl cinnamate, ethyl-4-isopropyl cinnamate, ethyl-2,4-diisopropyl cinnamate, methyl-2,4-diisopropyl cinnamate, propyl-p-methoxy cinnamate, isopropyl- p-methoxycinnamate, isoamyl-p-methoxycinnamate, 2-ethylhexyl-p-methoxycinnamate (hereinafter, also referred to as "2-ethylhexyl paramethoxycinnamate"), 2-ethoxyethyl-p-methoxycinnamate. , Cyclohexyl-p-methoxycinnamate, ethyl-α-cyano-β-phenylcinnamate, 2-ethylhexyl-α-cyano-β-phenylcinnamate, glyceryl mono-2-ethylhexanoyldiparamethoxycinnamate, etc. Can be mentioned. Among these, at least one selected from octyl cinnamate and 2-ethylhexyl-p-methoxycinnamate is preferable from the viewpoint of suppressing stickiness while enhancing the ultraviolet absorption effect, and 2-ethylhexyl-p- It is more preferable to contain methoxycinnamate, and as a commercially available product of 2-ethylhexyl-p-methoxycinnamate, Ubinal MC80 (manufactured by BASF) can be mentioned.
2,4-dihydroxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4,4'-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, as a benzophenone-based ultraviolet absorber. 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2-hydroxy-4-methoxybenzophenone, 4-phenylbenzophenone, 2-ethylhexyl-4'-phenylbenzophenone-2-carboxylate, 2-hydroxy-4-n -Octoxybenzophenone, 4-hydroxy-3-carboxybenzophenone and the like can be mentioned, and it is more preferable to contain 2,4-dihydroxybenzophenone from the viewpoint of suppressing stickiness while enhancing the ultraviolet absorption effect.
Examples of the triazine-based ultraviolet absorber include 2,4,6-tris[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-triazine and 2,4-bis-[{4-(2 -Ethylhexyloxy)-2-hydroxy}-phenyl]-6-(4-methoxyphenyl)-1,3,5-triazine and the like can be mentioned, and from the viewpoint of suppressing stickiness while enhancing the ultraviolet absorbing effect, 2 , 4-bis-[{4-(2-ethylhexyloxy)-2-hydroxy}-phenyl]-6-(4-methoxyphenyl)-1,3,5-triazine is more preferred.
Others include 3-(4'-methylbenzylidene)-dl-camphor, 3-benzylidene-dl-camphor, urocanic acid ethyl ester, 2-phenyl-5-methylbenzoxazole, 2,2'-hydroxy-. 5-methylphenylbenzotriazole, 2-(2'-hydroxy-5-t-octylphenyl)benzotriazole, dibenzalazine, dianisoylmethane, 4-methoxy-4'-t-butyldibenzoylmethane, 5-(3, 3-dimethyl-2-norbornylidene)-3-pentan-2-one, benzenebis-1,3-diketone derivative described in JP-A-2-212579, benzoylpinacolone derivative described in JP-A-3-220153, and the like. From the viewpoint of suppressing stickiness while increasing the ultraviolet absorption effect, it is more preferable to contain 4-methoxy-4′-t-butyldibenzoylmethane. In the commercially available product, Parasol 1789 (manufactured by DSM Nutrition Japan Co., Ltd. ) Is mentioned.

As the component (A), at least selected from benzoic acid-based UV absorbers, benzophenone-based UV absorbers, cinnamic acid-based UV absorbers, and triazine-based UV absorbers from the viewpoint of suppressing stickiness while enhancing the UV protection effect. It is preferable to contain one kind, more preferably at least one kind selected from a benzoic acid type ultraviolet absorber, a cinnamic acid type ultraviolet absorber and a triazine type ultraviolet absorber, and a cinnamic acid type ultraviolet absorber. Is more preferable, and that containing 2-ethylhexyl-p-methoxycinnamate is even more preferable.

The organic ultraviolet absorber of the component (A) can be used alone or in combination of two or more, and the combination and blending amount thereof are determined according to the ultraviolet protection effect of the skin cosmetic, for example.
From the viewpoint of further developing the ultraviolet protection effect of the skin cosmetic, the content of the component (A) in the skin cosmetic is 10% by mass or more, preferably 10.5% by mass or more based on the entire skin cosmetic. , And more preferably 12% by mass or more. Further, from the viewpoint of suppressing stickiness when sweating and imparting a dry feeling, the content of the component (A) in the skin cosmetic is 20% by mass or less based on the whole skin cosmetic, It is preferably 18% by mass or less, and more preferably 16% by mass or less.

(Component (B))
The component (B) is a crosslinked (meth)acrylic acid ester-based resin powder that satisfies a specific condition regarding compressive strength.
More specifically, the component (B) has a compressive strength of 0.7 to 10 kgf/mm ² obtained from the following test method and formula.
Compressive strength (kgf/mm ² )=2.8×load (kgf)/{π×particle diameter (mm)×particle diameter (mm)}
(In the above formula, the compression strength refers to the particles when the particles of the crosslinked (meth)acrylic acid ester-based resin powder are subjected to a compression test at 25° C. using a micro compression tester MCT-M200 manufactured by Shimadzu Corporation. It is a value calculated from the load and the particle size when the diameter is deformed by 10%.)

In the present embodiment, the crosslinked (meth)acrylic acid ester-based resin powder of the component (B) has a compressive strength of 0.7 to 10 kgf/mm ² from the viewpoint of obtaining non-greasiness and smoothness of the skin, It is preferably ² to 8 kgf/mm ² .

Here, the compressive strength means that the particles of the crosslinked (meth)acrylic acid ester-based resin powder (hereinafter also simply referred to as “resin particles”) are subjected to a compression test with a micro compression tester MCT-M200 manufactured by Shimadzu Corporation. Is a value calculated by the following formula from the load and the particle size when 10% of the particle size is deformed. The compressive strength is measured at 25°C.
Compressive strength (kgf/mm ² )=2.8×load (kgf)/{π×particle diameter (mm)×particle diameter (mm)}
The compressive strength of the resin particles can be appropriately adjusted by controlling the types and blending amounts of the monomer and the cross-linking agent forming the resin particles.

The crosslinked (meth)acrylic acid ester-based resin powder of the component (B) includes at least one monomer selected from acrylic acid ester and methacrylic acid ester (hereinafter referred to as (meth)acrylic acid ester monomer). A crosslinked (meth)acrylate resin powder obtained by copolymerizing a monomer component containing a monomer having a carboxyl group is preferable.
In addition, in this specification, "(meth)acryl" is a concept including both acryl and methacryl.

Further, a part of the carboxyl groups contained in the crosslinked (meth)acrylic acid ester-based resin powder of the component (B) may be neutralized. The base for neutralization is preferably an inorganic base such as sodium hydroxide, potassium hydroxide or ammonia, but organic bases such as amines, alkanolamines and basic amino acids can also be used. From the viewpoint of further improving the smoothness and dryness of the powder, the degree of neutralization is preferably 1 to 30%, particularly preferably 1 to 20%. Here, the degree of neutralization is a ratio of the number of moles of the added base to the number of moles of the carboxyl group of the monomer having a carboxyl group, which is expressed in percentage.

Further, in the present embodiment, as a component used for producing the component (B) and a method for producing the component (B), for example, the components and methods described in JP-A-2006-225311 or 2010-90153 can be used. Can be used. More specifically, the component (B) can be obtained by the aqueous suspension polymerization method described in the same document.

Further, the surfactant used in the aqueous suspension polymerization method is preferably one having a sulfonic acid (salt) group. This makes it possible to obtain a resin powder that is smoother and has a smooth feel. As the surfactant having a sulfonic acid (salt) group, for example, those described in JP-A-2006-225311 or JP-A-2010-90153 are used.

In the present embodiment, the shape of the resin powder of the component (B) is preferably spherical because it has a good feel on the skin. The average particle size of the component (B) is preferably 1 μm or more, more preferably 1.5 μm or more, particularly preferably 2 μm or more, from the viewpoint of reducing the squeaky feeling. On the other hand, 10 μm or less is preferable, 8 μm or less is more preferable, and 6 μm or less is particularly preferable from the viewpoint of suppressing roughness and further improving the skin fixing property.

The average particle size was measured by using a laser diffraction type particle size distribution measuring device (LA-920, manufactured by Horiba Ltd.) and the weight average particle size of a powdery water suspension was measured at 20° C. with a relative refractive index of 1.1. It can be determined by measuring.

The crosslinked (meth)acrylic acid ester resin powder of the component (B) is preferably a powder having a substantially spherical shape. At this time, the component (B) may be a spheroid, a spherical powder having irregularities on the surface, or the like, and does not need to be a perfect sphere.

The content of the component (B) in the skin cosmetic is 3.5% by mass or more, and preferably 4.5% by mass, with respect to the entire skin cosmetic, from the viewpoint of suppressing stickiness and enhancing a dry feeling. Or more, More preferably, it is 6 mass% or more.
Further, from the viewpoint of suppressing powderiness, the content of the component (B) in the skin cosmetic is 11% by mass or less, preferably 10% by mass or less, and more preferably the mass of the skin cosmetic. It is 9 mass% or less.

(Component (C))
Component (C) is a water-soluble polymer.
Component (C) includes, but is not limited to, carboxyvinyl polymer which may be alkyl modified, polyacrylamide, (Na acrylate/acryloyl dimethyl taurine Na) copolymer, polyacrylic acid and salts thereof, polymethacrylic acid and Acrylic polymers such as salts thereof and synthetic polymers such as polyvinyl alcohol; proteins such as gelatin and collagen, hyaluronic acid and salts thereof, xanthan gum, chondroitin sulfate and salts thereof, dextrin, methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl. Examples include natural polymers such as cellulose, hydroxypropylmethyl cellulose, pectin, gellan gum, alginic acid and its salts, carrageenan, carboxymethyl chitin, chitosan, pullulan, etc. These may be used alone or in combination of two or more kinds. it can.

Among these water-soluble polymers, from the viewpoint of ease of application to various dosage forms, preferably a carboxyvinyl polymer which may be alkyl modified, polyacrylamide, (Na acrylate/acryloyl dimethyl taurine Na) copolymer Acrylic acid-based water-soluble polymers such as; xanthan gum, hydroxyethyl cellulose, hydroxypropylmethyl cellulose and other water-soluble polysaccharides; hyaluronic acid and metal (alkali metal) salts of Group 1 of the periodic table, and metal salts of Group 2 of the periodic table are preferable. Can be mentioned.

Component (C) is more preferably one or more selected from carboxyvinyl polymers and alkyl-modified carboxyvinyl polymers.
Among these, examples of the carboxyvinyl polymer include polymers containing acrylic acid or methacrylic acid as a constituent monomer, and specific examples thereof include Carbopol 980 and Carbopol 981 (above, Lubrizol Advanced Materials). ..
As the alkyl-modified carboxyvinyl polymer, a polymer containing acrylic acid or methacrylic acid ester, which is an ester bond (alkyl modified) of acrylic acid or methacrylic acid and a fatty acid having 1 to 35 carbon atoms, as a constituent monomer Are listed. Among them, the one known as an alkyl acrylate/methacrylic acid copolymer (acrylic acid/alkyl acrylate (C10-30)) copolymer having an alkyl group having 10 to 30 carbon atoms is preferable from the viewpoint of suppressing stickiness. Specific examples thereof include Carbopol ETD2020, Carbopol 1382, Pemulen TR-1, Pemulen TR-2 (above, BF Goodrich Co. under the Carbopol trade name).
As the (Na acrylate/acryloyl dimethyl taurine Na) copolymer, polyacrylamide (SEPIGEL 305), (Na acrylate/acryloyl dimethyl taurine Na) copolymer (SIMULGEL EG), (hydroxyethyl acrylate/acryloyl dimethyl taurine Na) Copolymer (SIMULGEL FL, SIMULGEL NS, SEPIPLUS S, SEPINOV EMT 10), (acrylamide/ammonium acrylate) copolymer (SEPIPLUS 265), polyacrylate-13 (SEPIPLUS 400) (above, manufactured by SEPPIC) and the like can be mentioned.

The content of the component (C) in the skin cosmetic is 0.05% by mass or more based on the entire skin cosmetic from the viewpoint of improving the stability of the skin cosmetic and suppressing the irritation to the skin. %, preferably 0.07 mass% or more, and more preferably 0.1 mass% or more.
Further, from the viewpoint of suppressing stickiness and improving spreadability, the content of the component (C) in the skin cosmetic is 2.5 mass% or less, preferably 1 The content is less than or equal to mass%, more preferably less than or equal to 0.5 mass%, and even more preferably less than or equal to 0.2 mass%.

Further, in the present embodiment, the mass ratio ((A)/(C)) of the content of the component (A) to the content of the component (C) in the skin cosmetic suppresses stickiness when sweating. From the standpoint of achieving the same and the goodness of spread, it is 58 or more, preferably 65 or more, more preferably 70 or more, and 200 or less, preferably 150 or less, more preferably 120 or less, further preferably 90. It is as follows.

Further, in the present embodiment, the mass ratio ((C)/(B)) of the content of the component (C) to the content of the component (B) in the skin cosmetic is the suppression of stickiness when sweating. , 0.01 or more, more preferably 0.012 or more, and still more preferably 0.1 or more, from the viewpoint of enhancing the balance of the effects of dry feeling, non-powderiness, spreadability and non-irritating effect. 02 or more, preferably 0.05 or less, more preferably 0.045 or less, still more preferably 0.035 or less.

(Component (D))
Component (D) is ethanol. The content of the component (D) in the skin cosmetic is 12% by mass or more, preferably 14% by mass or more, and more preferably 20% by mass or more based on the entire skin cosmetic from the viewpoint of suppressing stickiness. is there.
Further, from the viewpoint of suppressing the feeling of irritation to the skin, the content of the component (D) in the skin cosmetic is 45% by mass or less, preferably 42% by mass or less, and more preferably the total amount of the skin cosmetic. Is 35% by mass or less.

Further, in the present embodiment, the mass ratio ((A)/(D)) of the content of the component (A) to the content of the component (D) in the skin cosmetic is from the viewpoint of improving the ultraviolet protection effect and the skin. From the viewpoint of suppressing the irritation sensation, it is preferably 0.3 or more, more preferably 0.34 or more, still more preferably 0.4 or more. From the viewpoint of suppressing stickiness, the mass ratio ((A)/(D)) is preferably 1 or less, more preferably 0.9 or less, still more preferably 0.6 or less, and even more preferably 0. It is 0.55 or less.

Further, in the present embodiment, the mass ratio ((B)/(D)) of the content of the component (B) to the content of the component (D) in the skin cosmetic is to suppress stickiness, improve the dry feeling, From the viewpoint of enhancing the balance of the effects of suppressing powderiness and suppressing irritation, it is preferably 0.1 or more, more preferably 0.15 or more, still more preferably 0.2 or more, and preferably Is 0.5 or less, more preferably 0.4 or less, and further preferably 0.3 or less.

The skin cosmetic in the present embodiment has a viscosity at 25° C. of preferably 1000 mPa·s or more, more preferably 2000 mPa·s or more, further preferably 2500 mPa·s or more, from the viewpoint of suppressing powderiness. Further, from the viewpoint of suppressing stickiness and increasing the spreadability, the viscosity of the skin cosmetic at 25° C. is preferably 5000 mPa·s or less, more preferably 4600 mPa·s or less, and further preferably 4000 mPa·s or less. Is.
Here, the viscosity of skin cosmetics at 25° C. is measured using a B8R type viscometer (manufactured by Toki Sangyo Co., Ltd.). More specific measurement conditions will be described later in the section of Examples.

Further, the skin cosmetic of the present embodiment may contain components other than the components (A) to (D) described above.
For example, the skin cosmetic of the present embodiment may further contain water. As the water, ion exchanged water, distilled water or the like can be used.
The content of water in the skin cosmetic may be, for example, the balance excluding components other than water in the skin cosmetic.

The skin cosmetic of the present embodiment may further contain a dextrin fatty acid ester.
The dextrin fatty acid ester is preferably an ester compound of a fatty acid having 8 to 24 carbon atoms, more preferably 14 to 18 carbon atoms, and a dextrin having an average polymerization degree of 10 to 50, more preferably 20 to 30. It is preferable that the substitution degree is 1.0 or more per glucose unit. Examples of such ester compounds include dextrin palmitate, dextrin stearate, dextrin oleate, dextrin isopalmitate, dextrin isostearate, and more preferably dextrin palmitate. The dextrin fatty acid ester can be used alone or in combination of two or more kinds.
Commercially available dextrin fatty acid esters include dextrin palmitate (Leopearl KL2, Leopearl KS2, and Leopard TL2), a mixture of dextrin palmitate and 2-ethylhexanoate dextrin (Leopearl TT2), and dextrin myristate (Leopearl MKL2) (both are available). Chiba Flour Milling Company) and the like.

The content of the dextrin fatty acid ester in the skin cosmetic is preferably 0.1% by mass or more, and more preferably 0.1% by weight, based on the total amount of the skin cosmetic, from the viewpoint of increasing the stability of the composition of the skin cosmetic. It is 3% by mass or more, preferably 5% by mass or less, and more preferably 3% by mass or less.

Further, the skin cosmetic of the present embodiment may further include at least one cooling sensation selected from the group consisting of menthol, menthyl glyceryl ether and menthyl lactate from the viewpoint of enhancing the cooling sensation of the skin cosmetic.
The content of the cooling sensation agent in the skin cosmetic is preferably 0.01% by mass or more, and more preferably 0% with respect to the entire skin cosmetic, from the viewpoint of imparting a preferable cooling sensation to the skin cosmetic. It is 0.03 mass% or more, preferably 1 mass% or less, and more preferably 0.5 mass% or less.

The skin cosmetic of the present embodiment includes, for example, inorganic particles such as zinc oxide and titanium oxide, organic particles other than the component (B) such as silicone resin particles, a surfactant, an oily component such as silicone oil, a fragrance, Moisturizers, cosmetic ingredients, medicinal ingredients, thickeners, bactericides, pH adjusters, antioxidants, preservatives, alcohols and other ingredients commonly used in cosmetics can also be contained.

The skin cosmetic in the present embodiment can be manufactured according to a usual method. Specifically, a water-soluble polymer of component (C), for example, a thickener such as pemulene is mixed with a phase in which the organic ultraviolet absorber of component (A) is dissolved to prepare an oil phase. It is prepared by adding to the phase and neutralizing with potassium hydroxide or the like.
The obtained skin cosmetic may be an emulsified cosmetic such as a water-in-oil type emulsified cosmetic, and the skin cosmetic may have a dosage form such as emulsions or creams.
Further, the skin cosmetics obtained by the present embodiment include makeup cosmetics such as makeup base, emulsified foundation, and eye shadow; sunscreen cosmetics such as sunscreen cream.

In the present embodiment, by using the specific components (A) to (D) in combination at a specific ratio, the ultraviolet protection effect is excellent, and the non-greasiness, the dry feeling, the non-powdery, It is possible to obtain a skin cosmetic having an excellent balance of the effects of good spreadability and non-irritating feeling.
More specifically, it spreads well on the skin and has an excellent sunscreen effect. It does not become sticky when sweated, and it has a smooth feel, yet it suppresses powderiness, and it also has a stimulating sensation. It is also possible to obtain less skin cosmetics.

The skin cosmetic of the present embodiment can be used by applying it to the skin, especially the skin excluding the hair, preferably the face, body, limbs and the like. For example, by applying the skin cosmetic of the present embodiment to the skin, ultraviolet rays can be protected, stickiness can be suppressed, and a smooth feeling can be obtained.
Further, the skin cosmetic of the present embodiment can be suitably used as a UV protective cosmetic, a sunscreen cosmetic, and the like. For example, according to this embodiment, it becomes possible to obtain a sunscreen cosmetic having an SPF value of preferably 25 or more, more preferably 30 or more.

The embodiments of the present invention have been described above, but these are examples of the present invention, and various configurations other than the above can be adopted.

In the following examples, each raw material was blended so that the content of each component in the obtained composition was as shown in Table 1 and Table 2 according to the amount of the component contained in the raw material, and the composition was Got

(Examples 1 to 10 and Comparative Examples 1 to 7)
The skin cosmetics having the compositions shown in Table 1 and Table 2 were produced, and the UV protection ability (SPF value), viscosity, non-greasiness when sweating, dry feeling, and no powderiness were obtained by the method described below. , Spreadability and lack of stimulation were evaluated. The results are also shown in Tables 1 and 2.

(Method for producing skin cosmetics)
The component (C) was added to a solution obtained by dissolving the component (A) at 80° C., and mixed with a disper for 10 minutes. An aqueous solution obtained by adding the component (D) to water was added to the obtained mixed liquid, and caustic potash was further added to neutralize the component (D), followed by mixing for 5 minutes with a homogenizer. Then, the component (B) or the component (B)′ was added to the mixed solution, and further mixed for 5 minutes with a homogenizer to obtain a skin cosmetic.

(Evaluation method)
(UV protection ability)
The SFP value was measured according to the SF measurement method of ISO24444.

(viscosity)
The skin cosmetics obtained in each example were allowed to stand for 1 hour or more in a constant temperature constant temperature bath at 25°C. Then, a B8R viscometer (manufactured by Toki Sangyo Co., Ltd.) and a rotor No. The viscosity was measured using C. The rotation speed was 5 rpm, and the viscosity 1 minute after the start of rotation was the viscosity at 25°C.

(sensory evaluation)
Sensory evaluation by 10 expert panelists on non-stickiness, dryness, no powderiness, good spreadability and non-irritating feeling when applying each skin cosmetic to the skin. did. The evaluation criteria are shown below.
A: 10 persons evaluated that they were not sticky even if they sweated, had a dry feeling, had no powdery feeling, had good spreadability, or had no irritating feeling.
B: 7-9 persons evaluated that they were not sticky even if they sweated, had a dry feeling, had no powdery feeling, had good spreadability, or had no irritating feeling.
C: 4-6 people evaluated that they were not sticky even if they sweated, they had a dry feel, they had no powdery feeling, they spread well, or they did not feel irritating.
D: 1-3 people evaluated that they were not sticky even if they sweated, had a dry feeling, had no powdery feeling, had good spreadability, or had no sensation of irritation.
E: No one evaluated that it was non-greasy even if sweated, had a dry feeling, had no powdery feeling, had good spreadability, or had no feeling of irritation.

In Table 1 and Table 2, the following components were used.
*2-Ethylhexyl paramethoxycinnamate: Ubinal MC-80 (7%) manufactured by BASF
*2 Crosslinked (meth)acrylic acid ester-based resin powder: Resin powder A of Production Example 1 of JP 2006-225311A (compressive strength 1.6 kgf/mm ² , average particle size 2.4 μm)
*3 Silica: Sunsphere H-52 manufactured by AGC SII Tech
*4 Carboxy vinyl polymer: CARBOPOL ETD2020 manufactured by Lubrizol
*5 Acrylic modified carboxyvinyl polymer: PEMULEN TR1 manufactured by Lubrizol
*6 Dextrin palmitate: Chiba Flour Mill's Leopard KL2

From Table 1 and Table 2, since the skin cosmetics described in each example include the components (A) to (D) in a specific amount and the mass ratio ((A)/(C)) is in a specific range. In addition to having a high UV protection of SPF 28 or more, compared to each comparative example, it does not become sticky when sweated, it has a dry feel, it does not have a powdery feeling, it spreads well, and it has a stimulating sensation. The evaluation result was “C” or more for each of the evaluation items “No”, and the effects were well balanced.

Claims (7)

The following components (A)-(D):
(A) 10 to 20% by mass of 2-ethylhexyl paramethoxycinnamate,
(B) 4.5 to 11% by mass of crosslinked (meth)acrylate resin powder having a compressive strength of 0.7 to 10 kgf/mm ² obtained from the following test method and formula.
Compressive strength (kgf/mm ² )=2.8×load (kgf)/{π×particle diameter (mm)×particle diameter (mm)}
(In the above formula, the compressive strength is measured when the particles of the crosslinked (meth)acrylic acid ester-based resin powder are subjected to a compression test at 25° C. using a micro compression tester MCT-M200 manufactured by Shimadzu Corporation, It is a value calculated by the above formula from the load at the time of 10% deformation of the particle diameter and the particle diameter.)
(C) 0.05 to 2.5% by mass of one or more selected from carboxyvinyl polymers and alkyl-modified carboxyvinyl polymers , and (D) ethanol 20 to 45% by mass.
And a mass ratio ((A)/(C)) of the content of the component (A) to the content of the component (C) is 65 to 150. The skin cosmetic according to claim 1, wherein the skin cosmetic has a viscosity at 2000C of 2000 to 5000 mPa·s. The skin cosmetic according to claim 1, further comprising a dextrin fatty acid ester. The skin cosmetic according to any one of claims 1 to 3, further comprising at least one cooling sensation agent selected from the group consisting of menthol, menthyl glyceryl ether, and menthyl lactate. The mass ratio ((B)/(D)) of the content of the component (B) to the content of the component (D) in the skin cosmetic is 0.1 to 0.5. The skin cosmetic according to any one of 4 to 4. The mass ratio ((A)/(D)) of the content of the component (A) to the content of the component (D) in the skin cosmetic is 0.3 to 0.6. 6. The skin cosmetic according to any one of 5 to 5. The mass ratio ((C)/(B)) of the content of the component (C) to the content of the component (B) in the skin cosmetic is 0.01 to 0.05. 7. The skin cosmetic according to any one of 6 to 6.