KR102223040B1 - O/w type sunblock cosmetic - Google Patents

Abstract

Provides an oil-in-water type sunburn prevention cosmetic that has good dispersibility in the oil phase of the ultraviolet scattering agent, has excellent storage stability, and does not feel sticky, and has a fresh touch upon application.
In the whole cosmetic, (a) one or two or more silicone activators of HLB8 or less modified by any one of a carboxyl group, an amide group, a pyrrolidone carboxyl group, an ester group, a glycerin group, and a polyglycerin group: 0.01 to 7 % By mass, (b) low viscosity silicone oil with a viscosity of 1 to 100 mm ² /s at 25°C: 1 to 50 mass %, (c) UV scattering agent consisting of hydrophobized inorganic powder: 0.01 to 30 mass %, (d ) Water-soluble polymer compound: 0.01 to 5% by mass, (e) one or two or more of HLB10 or more nonionic surfactants: 0.01 to 3% by mass, (f) water: 5 to 95% by mass, (c ) An oil-in-water type sunburn prevention cosmetic, characterized in that the ingredients are substantially dispersed in the oil phase.

Description

Underwater type sunburn prevention cosmetic {O/W TYPE SUNBLOCK COSMETIC}

The present invention relates to an oil-in-water type sunburn prevention cosmetic.

For the purpose of protecting against ultraviolet rays, sunburn-preventing cosmetics formulated with ultraviolet scattering agents such as titanium oxide or zinc oxide have conventionally been commercially available. Since the UV scattering agent has a high refractive index, it is a problem that the skin becomes white when applied in a large amount.However, conventionally, for example, by blending a dispersant or surface treatment of an ultraviolet scattering agent, the amount of the ultraviolet scattering agent in cosmetics It is avoided by increasing the acidity.

In addition, since it has excellent fresh touch upon application, an oil-in-water type sunburn prevention cosmetic is commercially available. In an oil-in-water type sunburn prevention cosmetic containing an ultraviolet scattering agent such as titanium oxide or zinc oxide, metal ions in titanium oxide or zinc oxide are eluted and the emulsion droplets are destroyed, so that the storage stability of the cosmetic may not be maintained in some cases. . Therefore, by subjecting titanium oxide or zinc oxide to a hydrophobic treatment such as fluorine treatment or silicon treatment (Patent Document 1: Japanese Patent Publication No. 3432980), or by using an acrylic acid-based polymer, titanium oxide or zinc oxide Stably blending is being studied (Patent Document 2: Japanese Patent Laid-Open No. 2005-272389). However, even if the hydrophobic treatment is performed, the elution of ions over time cannot be completely suppressed, and when an acrylic acid-based polymer is used a lot, the stability is improved, while a drawback in usability such as stickiness remains.

In addition, a study confirming long-term stability by forming an oil-in-water cosmetic using hydrophobized powder particles, an ionic water-soluble polymer, and a specific polyether-modified silicone has been reported (Patent Document 3: Japanese Patent Publication No. arc).

However, by the conventional technique described in Patent Document 3, an oil-in-water cosmetic having excellent stability was obtained, but defects such as stickiness derived from a specific polyether-modified silicone remained.

On the other hand, the carboxyl group, amide group, pyrrolidone carboxyl group, ester group, glycerin group, and polyglycerin group have a hydrophilic group locally compared to the polyether group, so that the adsorption property to various inorganic powders is high. It is known that it works well as a dispersing agent (Patent Document 4: Japanese Laid-Open Patent Publication No. 2004-169015). Since even a small amount exhibits a high dispersibility, it is considered that it is possible to reduce the amount of blending in cosmetics and to reduce the stickiness caused by the modified silicone.

Japanese Patent Publication No. 3432980 Japanese Patent Laid-Open Publication No. 2005-272389 Japanese Patent Publication No. 4276169 Japanese Unexamined Patent Publication No. 2004-169015

Accordingly, the present invention aims to provide an oil-in-water type sunburn-resistant cosmetic that has good dispersibility in the oil phase of the ultraviolet scattering agent, has excellent storage stability, and does not feel sticky, and has excellent fresh touch upon application. do.

The inventor of the present invention, as a result of careful examination in order to solve these problems,

(a) one or two or more silicone activators of HLB8 or less modified by any one of a carboxyl group, an amide group, a pyrrolidone carboxyl group, an ester group, a glycerin group, and a polyglycerin group: 0.01 to 7% by mass,

(b) low viscosity silicone oil with a viscosity of 1 to 100 mm ² /s at 25°C: 1 to 50% by mass,

And

(c) Ultraviolet scattering agent comprising hydrophobized inorganic powder: 0.01 to 30% by mass

Paid and including,

(d) water-soluble polymer compound: 0.01 to 5% by mass,

(e) 1 type or 2 or more types of HLB10 or more nonionic surfactants: 0.01 to 3% by mass,

And

(f) Water: 5 to 95% by mass

The water-in-water type sunburn-preventing cosmetic in which the component (c) is substantially dispersed in the oil phase is composed of an aqueous phase containing the component (c), has excellent dispersibility in the oil phase of the ultraviolet scattering agent of the component (c), storage stability, and feeling of use. It was found that it was also excellent, and came to achieve the present invention.

Accordingly, the present invention provides the following oil-in-water type sunburn prevention cosmetics.

(1) Underwater type sunlight, characterized in that the oil phase containing components (a), (b) and (c) below is dispersed in an aqueous phase containing components (d), (e) and (f) below. Anti-burn cosmetics.

(a) one or two or more silicone activators of HLB8 or less modified by any one of a carboxyl group, an amide group, a pyrrolidone carboxyl group, an ester group, a glycerin group, and a polyglycerin group: 0.01 to 7% by mass,

(b) low viscosity silicone oil with a viscosity of 1 to 100 mm ² /s at 25°C: 1 to 50% by mass,

(c) UV scattering agent comprising hydrophobized inorganic powder: 0.01 to 30% by mass,

(d) water-soluble polymer compound: 0.01 to 5% by mass,

(e) 1 type or 2 or more types of HLB10 or more nonionic surfactants: 0.01 to 3% by mass,

(f) Water: 5 to 95% by mass.

[2] It is characterized in that it is obtained by dispersing the ultraviolet scattering agent of the component (c) in the oil phase containing the component (b) in the presence of the component (a), and adding it to the aqueous phase component containing the component (d). The oil-in-water type sunburn prevention cosmetic described in 1].

[3] The oil-in-water type sunburn prevention cosmetic according to [1], wherein the component (a) is a polyglycerin-modified silicone.

(4) Polyglycerin-modified silicone is selected from polyglyceryl-3disiloxane dimethicone, polyglyceryl-3polydimethylsiloxyethyldimethicone, and laurylpolyglyceryl-3polydimethylsiloxyethyldimethicone The oil-in-water type sunburn prevention cosmetic according to [3].

[5] (b) The oil-in-water type sunburn prevention cosmetic according to [1], wherein the low-viscosity silicone oil is phenyl silicone.

[6] The oil-in-water type sunburn prevention cosmetic according to [5], wherein the phenylsilicone is diphenylsiloxyphenyltrimethicone.

[7] (e) The oil-in-water type sunburn prevention cosmetic according to [1], wherein the nonionic surfactant of HLB10 or higher is a hydrogenated hydrogenated castor oil in which polyoxyethylene is ether-linked.

[8] The oil-in-water type sunburn prevention cosmetic according to [1], further comprising (g) a partially crosslinked silicone swelling composition in the oil phase.

[9] The oil-in-water type sunburn prevention cosmetic according to [1], further comprising (h) a silicon-based film-forming agent in the oil phase.

[10] The oil-in-water type sunburn prevention cosmetic according to [1], further containing 0.1 to 10.0% by mass of an organic ultraviolet absorber (i) in the oil phase.

The oil-in-water type sunburn prevention cosmetic of the present invention has good dispersibility of the ultraviolet scattering agent into the oil phase, has excellent storage stability, and does not make it feel sticky, and has excellent fresh touch upon application.

1 is a schematic diagram of an oil-in-water cosmetic of the present invention.

The oil-in-water type sunburn prevention cosmetic of the present invention contains the following ingredients.

(a) one or two or more silicone activators of HLB8 or less modified by any one of a carboxyl group, an amide group, a pyrrolidone carboxyl group, an ester group, a glycerin group, and a polyglycerin group,

(b) low viscosity silicone oil with a viscosity of 1 to 100 mm ^{2 /s at 25°C,}

(c) an ultraviolet scattering agent comprising hydrophobized inorganic powder,

(d) a water-soluble high molecular compound,

(e) one or two or more nonionic surfactants of HLB10 or higher,

(f) water.

In this case, components (a) to (c) form an oil phase, and components (d) to (f) form an aqueous phase. In addition, in the cosmetic composition of the present invention, the following (g), (h), (i) components,

(g) a partially crosslinked silicone swelling composition,

(h) a silicon-based film forming agent,

(i) organic ultraviolet absorber

It may contain. In this case, it is preferable to blend (g), (h), and (i) components in an oil phase.

Hereinafter, these components will be described in more detail.

<(a) component>

The component (a) of the present invention is a component added to either the oil phase or the water phase, preferably in the oil phase, and is formed by any one of a carboxyl group, an amide group, a pyrrolidone carboxyl group, an ester group, a glycerin group, and a polyglycerin group. It is 1 type or 2 or more types of modified HLB8 or less silicone activators, and a well-known thing can be used. As long as it is used as a dispersant, it may be a silicone activator modified with any one of a carboxyl group, an amide group, a pyrrolidone carboxyl group, an ester group, a glycerin group, and a polyglycerin group. This is especially good. Polyglycerol-modified silicones are known by names such as polyglyceryl-3disiloxane dimethicone, polyglyceryl-3polydimethylsiloxyethyldimethicone, and laurylpolyglyceryl-3polydimethylsiloxyethyldimethicone. For example, KF-6100, 6104, 6105, etc. (all made by Shin-Etsu Chemical Co., Ltd.) are commercially available. As a silicone activator modified by a carboxyl group, an amide group, a pyrrolidone carboxyl group, and an ester group, Japanese Unexamined Patent Publication No. 2009-263643, Japanese Unexamined Patent Publication 2011-026493, Japanese Unexamined Patent Publication 2011-046844, and 2011 The silicone activator described in -026498 can be used. In addition, the component (a) may be added (blended) either in the oil phase or in the aqueous phase when preparing the oil-in-water emulsion constituting the cosmetic composition of the present invention. In the form, it is usually contained in the oil phase.

Further, the component (a) may be added to the cosmetic composition alone, but as a dispersant for the component (c), a commercially available product as a silicone dispersion containing the component (a) may be used. As a specific example, polyglyceryl-3 polydimethylsiloxyethyldimethicone and SPD-T5, T6, T5L, Z5, Z6, Z5L, etc. containing titanium oxide or zinc oxide (all manufactured by Shin-Etsu Chemical Co., Ltd.) are used. I can.

The blending amount of the component (a) is 0.01 to 7% by mass, more preferably 0.1 to 5% by mass, based on the total amount of the oil-in-water sunburn prevention cosmetic of the present invention. If the blending amount is too small, it becomes difficult to obtain sufficient storage stability, and if the blending amount is too large, stickiness is felt or it becomes a water-in-oil cosmetic, which does not become an oil-in-water cosmetic for the purpose of the present invention.

Moreover, (a) component may be used individually by 1 type or in combination of 2 or more types.

<(b) component>

The component (b) of the present invention is a ^{low viscosity silicone oil having a viscosity of 1 to 100 mm 2} /s at 25°C, and silicone oils conventionally used in cosmetics (i.e., straight chain, cyclic or branched low viscosity organopolysiloxane ), and is not particularly limited. When the viscosity is ^{lower than 1 mm 2} /s, irritation to the skin may be felt, and ^{when it is higher than 100 mm 2} /s, a stable oil-in-water cosmetic may not be obtained. Specific examples of this low-viscosity silicone oil include octamethyltrisiloxane, decamethyltetrasiloxane, trimethylsiloxy group blocking at both ends of the molecular chain and dimethylpolysiloxane blocking triorganosiloxy groups at both ends of the molecular chain (straight chain) diorganopolysiloxane, or deca. In addition to cyclic diorganopolysiloxanes such as methylcyclopentasiloxane, they are known by names such as methyltrimethicone, diphenyldimethicone, and diphenylsiloxyphenyltrimethicone. For example, KF-96A-1cs, KF-96L-1.5cs, KF-96L-2cs, KF-96A-5cs, KF-96A-6cs, KF-96A-10cs, KF-96A-20cs, KF-995 , TMF-1.5, KF-53, 54, 56A, etc. (all made by Shin-Etsu Chemical Co., Ltd.) are commercially available.

The component (b) has high compatibility with the components (a), (h), and (i), and is emulsified well with the component (e), in order to obtain a more stable water-in-water type sunburn prevention cosmetic. Preferred, phenylsilicone is suitable, in particular diphenylsiloxyphenyltrimethicone is most suitable. Specifically, what is marketed under the brand name of KF-56A (manufactured by Shin-Etsu Chemical Co., Ltd.) can be used. Moreover, you may use what is marketed as a mixture with the component (g) mentioned later. Specifically, KSG-18A (manufactured by Shin-Etsu Chemical Co., Ltd.) in which a partially crosslinked silicone is swollen in diphenylsiloxyphenyltrimethicone can be used.

Further, the component (b) may be added to the cosmetic composition alone, but a commercially available product as a silicone dispersion containing the component (b) as a dispersion medium for the component (c) can also be used. As a specific example, SPD-T5, T6, T5L, Z5, Z6, Z5L, etc. containing decamethylcyclopentasiloxane or volatile low viscosity dimethicone and titanium oxide or zinc oxide (all manufactured by Shin-Etsu Chemical Co., Ltd.) can be used. have.

The blending amount of the component (b) is 1 to 50% by mass, more preferably 3 to 30% by mass, based on the total amount of the oil-in-water sunburn prevention cosmetic of the present invention. If the blending amount is too small, after application, volatile components such as water and volatile silicone are volatilized, and then the skin becomes white, or water resistance may be lost due to the formation of an oil film. In addition, if the blending amount is too large, the fresh feeling peculiar to the oil-in-water cosmetic may be impaired.

The component (b) may or may not have volatility, and may be used alone or in combination of two or more. In the case of a combination of two or more types of volatile low viscosity silicone oil and non-volatile silicone oil, when the relative mixing ratio of volatile components is high, there is a tendency to give a powdery feeling of use due to volatilization of the oil during application. If the relative mixing ratio of the volatile components is low, there is a tendency to give a creamy feeling of use due to the oil remaining on the skin. In controlling the feeling of use, the blending ratio can be determined in a timely manner.

<(c) component>

The component (c) of the present invention is a hydrophobized inorganic powder used as an ultraviolet scattering agent. As the inorganic powder used as the base material, those that can be commonly blended in sunburn prevention cosmetics can be used. The geometric aspect of the inorganic powder may be a spherical shape, a polyhedron shape, a spindle shape, a needle shape, a plate shape, etc., as long as it is usually used in a sunburn prevention cosmetic. The volume average particle diameter of the inorganic powder is 500 nm or less, and is preferably 1 to 200 nm from the viewpoint of ultraviolet shielding property and transparency at the time of application. In addition, the volume average particle diameter can be measured by a dynamic light scattering method, an X-ray diffraction method, a Coulter counter method, or the like. Specifically, particles that absorb and scatter ultraviolet rays, such as fine particle titanium oxide, fine particle iron-containing titanium oxide, fine particle zinc oxide, fine particle cerium oxide, and composites thereof, are mentioned. Examples of commercially available products of fine particle titanium oxide having a volume average particle diameter of 500 nm or less include STR-60 and STR-100 manufactured by Sakai Chemical Co., Ltd., MT-500B manufactured by Teika Corporation, and the like. Commercially available products of zinc oxide fine particles having a volume average particle diameter of 500 nm or less, for example, FINEX-50 manufactured by Sakai Chemical Co., Ltd., ZnO-350 manufactured by Sumitomo Osaka Cement Co., Ltd., and FZO- manufactured by Ishihara Sangyo Co., Ltd. 50, MZ-500, MZ-506X manufactured by Teika Corporation, etc. are mentioned.

As for these inorganic powders, in order to block surface activity and impart dispersibility, it is common to use a surface-treated inorganic material such as alumina and silica. In addition, for the purpose of imparting water repellency or dispersibility to these powders, hydrophobic treatment is performed with an oil agent, metal soap, organopolysiloxane, fluorine, or the like, but the hydrophobic treatment can be performed according to a conventional method. Among these hydrophobic treatments, it is possible to impart high stability to the powder particles, or in one respect, methylhydrogenpolysiloxane, triethoxysilylethylpolydimethylsiloxyethyldimethicone, triethoxysilylethylpolydimethylsiloxyethylhexyldimethicone, Silicone treatment using triethoxycaprylylsilane, (hydrogendimethicone/octylsilsesquioxane) copolymer or the like is suitable. Specifically, KF-99P, KF-9901, KF-9908, KF-9909, AES-3083, etc. (all manufactured by Shin-Etsu Chemical Co., Ltd.) can be used.

As a specific example of the hydrophobized inorganic powder, SPD-T5, T6, T5L, Z5, Z6, Z5L, etc. (all made by Shin-Etsu Chemical Co., Ltd.) containing the hydrophobized fine particles titanium oxide or the hydrophobized fine zinc oxide are used. I can.

The blending amount of the component (c) is 0.01 to 30% by mass, more preferably 3 to 30% by mass, based on the total amount of the oil-in-water type sunburn prevention cosmetic of the present invention. If the blending amount is too small, a sufficient UV shielding effect is not obtained to prevent sunburn, and if the blending amount is too high, the stability of the oil-in-water cosmetic may be impaired, or an excessive blending of the powder may cause a feeling of stickiness. have.

The component (c) may be blended alone or in combination of two or more depending on the desired ultraviolet shielding effect.

In the present invention, the component (c) is characterized in that it is substantially dispersed in the oil phase, as shown in Fig. 1 (schematic diagram). Since the dispersibility of the component (c) into the oil phase is remarkably improved by the component (a), the component (c) stays in the oil phase for a long time and is less likely to spill out into the aqueous phase. Therefore, it is possible to provide a stable oil-in-water type sunburn prevention cosmetic.

<(d) component>

The component (d) of the present invention is a water-soluble polymer compound, and it is not particularly limited as long as it is used in cosmetics, and a known component can be used. As specific examples, vinyl polymers such as gum arabic, guar gum, carrageenan, agar, queen's seed, locust bean gum, xanthan gum, pullulan, sodium carboxymethylcellulose, hydroxyethylcellulose, and carboxyvinyl polymer, (acryloyl Dimethyltaurine ammonium/vinylpyrrolidone) copolymer, (acrylic acid Na/acryloyldimethyltaurine Na) copolymer, (hydroxyethyl acrylate/acryloyldimethyltaurine Na) copolymer, (acrylamide/acryloyldimethyl Water-soluble polymers such as acrylic polymers such as taurine Na) copolymer and polyacrylamide may be used. Among them, it is possible to stabilize the oil-in-water cosmetic relatively easily by using an acrylic polymer.

The blending amount of the component (d) is 0.01 to 5% by mass, more preferably 1 to 3% by mass, based on the total amount of the oil-in-water sunburn prevention cosmetic of the present invention. If the blending amount is too small, it is difficult to obtain a stable oil-in-water cosmetic, and if the blending amount is too high, the emulsification becomes difficult due to the increase in viscosity of the aqueous phase, or the texture of the finish may be sticky.

Moreover, (d) component may be used individually by 1 type or in combination of 2 or more types, depending on a desired feeling of use.

<(e) component>

The component (e) of the present invention is a component added to either of the aqueous phase or the oil phase, preferably in the aqueous phase, and is a nonionic surfactant of HLB10 or higher other than the silicone active agent of the component (a), and is specifically limited as long as it is used in cosmetics. It does not work, and a known one can be used. Moreover, by containing the component (e), the emulsified particle diameter can be made finely and uniformly, and long-term stability can be improved.

(e) The component may be blended alone or in combination of two or more. In addition, the component (e) may be added (blended) in either the water phase or the oil phase when preparing the oil-in-water emulsion constituting the cosmetic composition of the present invention. In the form, it is usually contained in an aqueous phase.

In addition, as for the component (e), as long as the weighted average HLB is 10 or more, two or more types of nonionic surfactants of HLB10 or more and less than 10 may be used in combination.

The blending amount of the component (e) is 0.01 to 3% by mass, more preferably 0.1 to 0.5% by mass, based on the total amount of the oil-in-water sunburn prevention cosmetic of the present invention. Within this range, an oil-in-water cosmetic with good long-term stability can be obtained.

(e) As a specific example of component, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl ether, polyoxyethylene polyoxypropylene alkyl ether, polyoxyethylene alkylphenyl ether polyglycerol fatty acid ester, alkyl gluco Seed can be illustrated. More suitably, by using hydrogenated hydrogenated castor oil such as polyoxyethylene (60) hydrogenated castor oil and polyoxyethylene (80) hydrogenated castor oil, a cosmetic composition having excellent storage stability can be obtained.

<(f) component>

(f) The component is water that forms an aqueous phase, and ion-exchanged water, distilled water, deionized water, purified water defined by the Japanese Pharmacopoeia, hot spring water, deep sea water, etc. can be used. The blending amount is 5 to 95% by mass of the entire oil-in-water type sunburn prevention cosmetic of the present invention, and is more preferably 40 to 95% by mass to obtain a fresh touch upon application.

<(g) component>

The cosmetic composition of the present invention contains (g) a partially crosslinked silicone swelling composition, so that a cosmetic composition having excellent smooth feel at the time of application and after application can be obtained. As a compounding amount, 0-30 mass% of the whole cosmetic is preferable, and the range of 0.5-10 mass% is especially preferable.

(g) component is a polymer obtained by crosslinking organopolysiloxane, and specific examples include (dimethicone/vinyldimethicone) crosspolymer, (dimethicone/phenylvinyldimethicone) crosspolymer, (vinyldimethicone/lauryldimethicone) ) Crosspolymer, (laurylpolydimethylsiloxyethyldimethicone/bisvinyldimethicone) crosspolymer, etc. These are commercially available as swelling products containing silicone oil or other oils, for example, under the name of KSG-15, 16, 19, 1610, 18A, 41, 042Z, etc. (all manufactured by Shin-Etsu Chemical Co., Ltd.) It is released.

<(h) component>

The cosmetic of the present invention can impart water resistance to the cosmetic film after application of the oil-in-water cosmetic by containing (h) a silicone-based film-forming agent. As a compounding amount, 0-10 mass% of the whole cosmetic is preferable, and the range of 1-5 mass% is especially preferable.

It is preferable that the (h) component is specifically (I) acrylic silicone resin or (II) silicone network resin. (I) The acrylic silicone resin is an acrylic/silicone graft or a block copolymer, and further contains a moiety selected from an anionic moiety such as a long-chain alkyl moiety, a polyoxyalkylene moiety and a fluoroalkyl moiety, and a carboxylic acid in the molecule. Acrylic silicone resin is mentioned. Commercially available products are KP-541, KP-543, KP-545, KP-549, KP-550, KP-571, KP-575, KP-581 dissolved in silicone oil, hydrocarbon oil, and alcohol (all of which are manufactured by Shin-Etsu Chemical Co., Ltd.) Article), etc. are mentioned.

(II) The silicone network resin is preferably a silicone network compound represented by MQ, MDQ, MT, MTQ, MDT, and MDTQ as a constituent component. Yi M, D, T, Q shows an R ₃ SiO _{0 .5} units, R ₂ SiO unit, RSiO _{1 .5} units, SiO ₂ units. As a representative example, there is trimethylsiloxysilicic acid. Silicone reticulated resins are generally known as MQ resins or MT, MDT resins, and some have portions denoted by MDQ, MTQ, and MDTQ. Specifically, it is commercially available as a dissolved product such as decamethylcyclopentasiloxane or isododecane, and a moiety selected from a pyrrolidone moiety, a long-chain alkyl moiety, a polyoxyalkylene moiety and a fluoroalkyl moiety, and an amino moiety You may contain it in. For example, KF-7312J, KF-7312K, KF-7312T, KF-7312L, X-21-5249, X-21-5249L, X-21-5250, X-21-5250L, KF-9021, KF- They are commercially available under brand names such as 9021L, X-21-5595, and X-21-5616 (all made by Shin-Etsu Chemical Co., Ltd.).

<(i) ingredient>

The cosmetic of the present invention may contain 0.1 to 10.0 mass% of (i) an organic ultraviolet absorber in order to enhance the ultraviolet shielding effect.

Specifically, the component (i) is a benzoic acid-based ultraviolet absorber such as paraaminobenzoic acid; Anthranilic acid-based ultraviolet absorbers such as methyl anthranilate; Salicylic acid-based ultraviolet absorbers such as methyl salicylate, octyl salicylate, and trimethylcyclohexyl salicylate; Cinnamic acid-based ultraviolet absorbers such as octyl paramethoxycinnamate; Benzophenone ultraviolet absorbers such as 2,4-dihydroxybenzophenone; Urocanic acid-based ultraviolet absorbers such as ethyl urocanate; Dibenzoylmethane-based ultraviolet absorbers such as 4-t-butyl-4'-methoxy-dibenzoylmethane; And phenylbenzimidazole sulfonic acid and triazine derivatives.

<Other optional ingredients>

In the cosmetic composition of the present invention, various ingredients used in ordinary sunburn prevention cosmetics may be blended within a range that does not impair the effects of the present invention. As the component, for example, (1) an oil agent, (2) a compound having an alcoholic hydroxyl group, and (3) other additives may be included. These may be used alone or in combination of two or more as appropriate. In this case, it is preferable to mix the oil-soluble component in the oil phase and the water-soluble component in the aqueous phase.

(1) emulsion

The emulsion may be solid, semi-solid, or liquid, and for example, natural animal and plant oils and semisynthetic oils, hydrocarbon oils, higher alcohols, ester oils, silicone oils, and fluorine-based oils can be used.

·Natural animal and plant oils and oils and semi-synthetic maintenance

Natural animal and vegetable oils and oils and semisynthetic oils include avocado oil, linseed oil, almond oil, pewter, perilla oil, olive oil, cacao fat, panya wax, non-wood oil, carnauba wax, liver oil, candelilla wax, refined candelilla wax, and tallow. , Ugakji, beef bone, hardened beef, almond oil, spermaceti, hydrogenated oil, wheat germ oil, sesame oil, rice germ oil, rice bran oil, sugarcane wax, baby camellia oil, safflower seed oil, shea butter, Chinese paulownia oil, cinnamon oil, jojoba Wax, squalane, squalene, shellac wax, tortoise oil, soybean oil, teaseed oil, camellia oil, evening primrose oil, corn oil, pork oil, rapeseed oil, Japanese paulownia oil, rice bran wax, germ oil, horse oil, persimmon oil, palm oil, Palm kernel oil, castor oil, hydrogenated castor oil, castor oil fatty acid methyl ester, sunflower oil, grape oil, bayberry wax, jojoba oil, macadamia nut oil, beeswax, mink oil, meadow foam oil, cottonseed oil, cotton wax, wood wax, wood wax kernel oil , Montan wax, palm oil, hydrogenated palm oil, tripalm oil fatty acid glyceride, sunny, peanut oil, lanolin, liquid lanolin, reduced lanolin, lanolin alcohol, hard lanolin, lanolin acetate, lanolin acetate alcohol, lanolin fatty acid isopropyl, polyoxyethylene Norin alcohol ether, polyoxyethylene lanolin alcohol acetate, lanolin fatty acid polyethylene glycol, polyoxyethylene hydrogenated lanolin alcohol ether, egg yolk oil, and the like.

·Hydrocarbon oil

Examples of the hydrocarbon oil include linear or branched hydrocarbon oil, and may be a volatile hydrocarbon oil or a nonvolatile hydrocarbon oil. Specifically, it is a wax, α-olefin oligomer, hard isoparaffin, isododecane, isohexadecane, hard fluid isoparaffin, squalane, synthetic squalane, vegetable squalane, squalene, ceresin, paraffin, paraffin wax, polyethylene wax, polyethylene poly Propylene wax, (ethylene/propylene/styrene) copolymer, (butylene/propylene/styrene) copolymer, liquid paraffin, liquid isoparaffin, pristane, polyisobutyrene, hydrogenated polyisobutene, microcrystalline wax, petrolatum Etc; As higher fatty acids, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, undecylenic acid, oleic acid, linoleic acid, linolenic acid, arachidonic acid, eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA) ), isostearic acid, and 12-hydroxystearic acid.

·High-grade alcohol

Examples of the higher alcohol include alcohols having preferably 6 or more carbon atoms, and more preferably 10 to 30 carbon atoms. Specific examples of higher alcohols include lauryl alcohol, myristyl alcohol, palmityl alcohol, stearyl alcohol, behenyl alcohol, hexadecyl alcohol, oleyl alcohol, isostearyl alcohol, hexyldodecanol, octyldodecanol, cetoste Aryl alcohol, 2-decyltetradecinol, cholesterol, phytosterol, polyoxyethylene cholesterol ether, monostearyl glycerin ether (batyl alcohol), monooleyl glyceryl ether (seracyl alcohol), and the like.

·Ester oil

As ester oil, diisobutyl adipate, 2-hexyldecyl adipate, di-2-heptylundecyl adipate, N-alkyl glycol monoisostearate, isocetyl isostearate, trimethylolpropane triisostearate, Ethylene glycol di-2-ethylhexanoate, cetyl 2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, tetra-2-ethylhexanoate pentaerythritol, cetyl octanoate, octyldodecyl gum ester, oleate oleate Il, octyldodecyl oleate, decyl oleate, neopentyl glycol dioctanoate, neopentyl glycol dicaprate, triethyl citrate, 2-ethylhexyl succinate, amyl acetate, ethyl acetate, butyl acetate, isocetyl stearate, butyl stearate , Diisopropyl sebacate, di-2-ethylhexyl sebacate, cetyl lactate, myristyl lactate, isononanoate isononyl, isononanoate isotridecyl, palmitate isopropyl, palmitate 2-ethylhexyl , 2-hexyldecyl palmitic acid, 2-heptylundecyl palmitic acid, cholesteryl 12-hydroxystearyl acid, dipentaerythritol fatty acid ester, isopropyl myristic acid, octyldodecyl myristic acid, US 2-hexyldecyl rissan, myristic myristic acid, dimethyl octanoate hexyldecyl, ethyl laurate, hexyl laurate, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, lauroyl sarco New isopropyl ester, diisostearyl malate, etc.; Acetoglyceryl, triisooctanoate glyceryl, triisostearate glyceryl, triisopalmitate glyceryl, tribehenic acid glyceryl, monostearate glyceryl, di-2-heptylundecanoate glyceryl, trimyritic acid And glyceride oils such as glyceryl and diglyceryl myristic acid isostearate.

・Silicone oil

As a silicone oil other than component (b), which is an essential component according to the present invention, it has a low viscosity to high viscosity such as dimethylpolysiloxane, caprylylmethicone, phenyltrimethicone, methylphenylpolysiloxane, methylhexylpolysiloxane, dimethylsiloxane/methylphenylsiloxane copolymer, etc. Silicone rubber such as straight or branched organopolysiloxane, gum-like dimethylpolysiloxane with high polymerization degree, amino-modified gum-like organopolysiloxane, gum-like dimethylsiloxane/methylphenylsiloxane copolymer, and silicone gum or rubber-like cyclic organopolysiloxane solution, stea High-grade alkoxy-modified silicones such as oxysilicone, alkyl-modified silicones, long-chain alkyl-modified silicones, amino acid-modified silicones, and fluorine-modified silicones.

·Fluorine-based emulsion

Examples of the fluorine-based emulsion include perfluoropolyether, perfluorodecalin, perfluorooctane, and the like.

(2) a compound having an alcoholic hydroxyl group

Examples of the compound having an alcoholic hydroxyl group include lower alcohols having preferably 2 to 5 carbon atoms, such as ethanol and isopropanol; And sugar alcohols such as sorbitol and maltose. Further, sterols such as cholesterol, sitosterol, phytosterol, and lanosterol; Polyhydric alcohols, such as butylene glycol, propylene glycol, dibutylene glycol, and pentylene glycol, etc. are mentioned.

As the compounding amount of the compound having an alcoholic hydroxyl group, it is appropriately selected within the range of 0.1 to 10% by mass of the total cosmetic composition.

(3) Other additives

Other additives include oil-soluble gelling agents, limiting agents, moisturizing agents, antibacterial preservatives, fragrances, salts, antioxidants, pH adjusters, chelating agents, refreshing agents, anti-inflammatory agents, and skin care ingredients (whitening agents, cell rejuvenating agents, rough skin improving agents, blood circulation accelerators , Skin astringents, antiseborrheic agents, etc.), vitamins, amino acids, nucleic acids, hormones, inclusion compounds, and the like.

・Oil-soluble gelling agent

Examples of the oil-soluble gelling agent include metal soaps such as aluminum stearate, magnesium stearate, and zinc myristate; Amino acid derivatives such as N-lauroyl-L-glutamic acid and α,γ-di-n-butylamine; Dextrin fatty acid esters, such as dextrin palmitic acid ester, dextrin stearic acid ester, and dextrin 2-ethylhexanoic acid palmitic acid ester; Sucrose fatty acid esters such as sucrose palmitic acid ester and sucrose stearic acid ester; Flactooligosaccharide fatty acid esters such as flactooligosaccharide stearic acid ester and flactooligosaccharide 2-ethylhexanoic acid ester; Benzylidene derivatives of sorbitol, such as monobenzylidenesorbitol and dibenzylidenesorbitol; And organic modified clay minerals such as dimethylbenzyldodecylammonium montmorillonite clay and dimethyldioctadecylammonium montmorillonite clay.

·Restriction system

Examples of the limiting agent include aluminum chlorohydrate, aluminum chloride, aluminum sesquichlorohydrate, zirconyl hydroxy chloride, aluminum zirconium hydroxy chloride, and aluminum zirconium glycine complex.

·Moisturizer

As a moisturizing agent, glycerin, sorbitol, propylene glycol, dipropylene glycol, 1,3-butylene glycol, pentylene glycol, glucose, xylitol, maltitol, polyethylene glycol, hyaluronic acid, chondroitin sulfate, pyrrolidone carboxylate, poly Oxyethylene methyl glucoside, polyoxypropylene methyl glucoside, egg yolk lecithin, soybean lecithin, phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidylglycerol, phosphatidylinositol, sphingoin lipid, and the like.

·Antibacterial preservative

Antibacterial preservatives include paraoxybenzoic acid alkyl ester, benzoic acid, sodium benzoate, sorbic acid, potassium sorbate, and phenoxyethanol, and antibacterial agents include benzoic acid, salicylic acid, phenolic acid, sorbic acid, paraoxybenzoic acid alkyl ester, parachlormethacresol, hexachlorophene, and chloride. Benzalkonium, chlorhexidine chloride, trichlorocarvanilide, photosensitizer, phenoxyethanol, etc. are mentioned.

·Spices

There are natural and synthetic fragrances as fragrances. As natural fragrances, vegetable fragrances separated from flowers, leaves, wood, peels, and the like; There are animal flavors such as musk and civet. Examples of synthetic fragrances include hydrocarbons such as monoterpenes, alcohols such as aliphatic alcohols and aromatic alcohols; Aldehydes such as terpenaldehyde and aromatic aldehyde; Ketones such as alicyclic ketones; Esters such as terpene esters; Lactones; Phenols; Oxides; Compounds containing substances; And acetals.

·salts

Examples of salts include inorganic salts, organic acid salts, amine salts and amino acid salts. Examples of inorganic salts include sodium salts, potassium salts, magnesium salts, calcium salts, aluminum salts, zirconium salts and zinc salts of inorganic acids such as hydrochloric acid, sulfuric acid, carbonic acid, and nitric acid; Examples of the organic acid salt include salts of organic acids such as acetic acid, dehydroacetic acid, citric acid, malic acid, succinic acid, ascorbic acid and stearic acid; Examples of the amine salt and amino acid salt include salts of amines such as triethanolamine, salts of amino acids such as glutamic acid, and the like. In addition, salts such as hyaluronic acid and chondroitin sulfate, aluminum zirconium glycine complexes, etc., and acid-alkali neutralized salts used in cosmetic formulations can also be used.

·Antioxidant

Examples of antioxidants include tocopherol, p-t-butylphenol, butylhydroxyanisole, dibutylhydroxytoluene, and phytic acid.

·PH adjuster

Examples of the pH adjuster include lactic acid, citric acid, glycolic acid, succinic acid, tartaric acid, dl-malic acid, potassium carbonate, sodium hydrogen carbonate, and ammonium hydrogen carbonate.

·Chelating agent

Examples of the chelating agent include alanine, sodium edetate, sodium polyphosphate, sodium metaphosphate, and phosphoric acid.

·Refreshing agent

Examples of the refreshing agent include L-menthol and camphor.

·Anti-inflammatory

Examples of anti-inflammatory agents include allantoin, glytilithinic acid and salts thereof, glytyletic acid and stearyl glytyletic acid, tranexamic acid, azulene, and the like.

・Ingredients for skin beauty

As a skin cosmetic ingredient, whitening agents, such as placenta extract, arbutin, glutathione, and hoicho extract; Cell activators such as royal jelly, photosensitizer, cholesterol derivatives, and milk blood extract; Rough skin improvers; Nonyl acid vanilamide, nicotinic acid benzyl ester, nicotinic acid β-butoxyethyl ester, capsaicin, jingerone, cantharistink, iktamol, caffeine, tannic acid, α-borneol, nicotinic acid tocopherol, inositol hexanicotinate, cyclandel Blood circulation accelerators such as late, cinnarizine, tolazoline, acetylcholine, verapamil, ceparantine, and γ-olizanol; Skin astringents such as zinc oxide and tannic acid; And antiseborrheic drugs such as sulfur and thiantrol.

·Vitamins

As vitamins, vitamin A, such as vitamin A oil, retinol, retinol acetate, and retinol palmitate; _{Vitamin B 2} such as riboflavin, riboflavin butyrate, flavin adenine nucleotide, pyridoxine hydrochloride, pyridoxine dioctanoate, pyridoxine tripalmitate and other vitamin B ₆ , vitamin B ₁₂ and its derivatives, vitamin B ₁₅ and its derivatives, etc. B vitamins; Vitamin C, such as L-ascorbic acid, L-ascorbic acid dipalmitic acid ester, L-ascorbic acid-2-sodium sulfate, and L-ascorbic acid phosphate diester dipotassium; Vitamin D such as ergocalciferol and cholecalciferol; vitamin E, such as α-tocopherol, β-tocopherol, γ-tocopherol, dl-α-tocopherol acetate, dl-α-tocopherol nicotinate, and dl-α-tocopherol succinate; Nicotinic acids such as nicotinic acid, benzyl nicotinate, and nicotinic acid amide; And pantothenic acids such as vitamin H, vitamin P, calcium pantothenate, D-pantothenyl alcohol, pantotenyl ethyl ether, and acetyl pantotenyl ethyl ether, and biotin.

·Amino acids

Examples of amino acids include glycine, valine, leucine, isoleucine, serine, threonine, phenylalanine, arginine, lysine, aspartic acid, glutamic acid, cystine, cysteine, methionine, and tryptophan.

·Nucleic acid

Deoxyribonucleic acid etc. are mentioned as a nucleic acid.

·hormone

Examples of hormones include estradiol and ethenyl estradiol.

·Inclusion compound

Cyclodextrin etc. are mentioned as an inclusion compound.

The oil-in-water type sunburn prevention cosmetic of the present invention uses components (a), (b), (c) and other oil-soluble components as necessary to form an oil phase, while (d), (e), (f) By forming an aqueous phase using components and other water-soluble components as necessary, an oil-in-water emulsion is prepared by a commercial method, or by using components (b), (c), (e) and other oil-soluble components as necessary. On the other hand, it can be obtained by forming an aqueous phase using components (a), (d), and (f) and, if necessary, other water-soluble components, and preparing an oil-in-water emulsion by a commercial method.

More preferably, in the water-in-water type sunburn prevention cosmetic of the present invention, the ultraviolet scattering agent of the component (c) is dispersed in the oil phase containing the silicone oil of the component (b) in the presence of the silicone activator of the component (a), and is required. Other oil-soluble components are added to the oil phase according to the requirements, while (d), (e) components, and other water-soluble components, if necessary, are added to the water of the component (f) to form an aqueous phase, and the oil phase is dispersed in the water phase according to the commercial method. It can be prepared by doing.

(Example)

Hereinafter, examples and comparative examples are shown to specifically describe the present invention, but the present invention is not limited to the following examples. In addition, in an example, the viscosity is a value measured at 25 degreeC, and "%" which shows a concentration and content rate shows "mass%."

[Examples 1 to 5, Comparative Examples 1 to 5]

With the formulations shown in Tables 1 and 2, the preparation of an oil-in-water type sunburn prevention cosmetic was tested.

Ingredient (% by mass) Example One 2 3 4 5 One Hydrophobic titanium oxide/polyglycerin modified silicone/decamethylpentasiloxane dispersion (Note 1)
12.50
8.00
12.50
12.50
12.50 2 Hydrophobic zinc oxide/polyglycerin modified silicone/decamethylpentasiloxane dispersion (Note 2)
17.50
12.00
17.50
17.50
17.50 3 Hydrophobic treatment titanium oxide (100nm) - - - - - 4 Hydrophobic treatment zinc oxide (30nm) - - - - - 5 Decamethylpentasiloxane - - - - - 6 Polyglycerin-modified silicone 1 (Note 3) 0.30 0.30 0.30 0.30 - 7 Polyether modified silicone 1 (Note 4) - - - - 0.30 8 Polyglycerin-modified silicone 2 (Note 5) 0.60 0.60 0.60 0.60 - 9 Polyether modified silicone 2 (Note 6) - - - - 0.60 10 Partially crosslinked silicone/methylphenylpolysiloxane swelling composition (Note 7) 3.00 3.00 3.00 - 3.00 11 Methylphenylpolysiloxane (Note 8) - 5.00 - - - 12 Ammonium acryloyldimethyltaurate/vinylpyrrolidone copolymer (Note 9) 0.65 0.65 0.65 0.65 0.65 13 (Acrylamide/Acryloyldimethyltaurine Na) Copolymer/Isohexadecane/Polysorbate 80·Aqueous Solution (Note 10)
1.20
1.20
1.20
1.20
1.20 14 Polyoxyethylene (80) hydrogenated castor oil 0.13 - - - 0.13 15 Polysorbate 80 - 0.05 0.13 - - 16 1,3-butylene glycol 3.00 3.00 3.00 3.00 3.00 17 Sodium chloride 0.08 0.08 0.08 0.08 0.08 18 antiseptic Appropriate amount Appropriate amount Appropriate amount Appropriate amount Appropriate amount 19 water Balance Balance Balance Balance Balance Sum 100.00 100.00 100.00 100.00 100.00

(Note 1) Mixed dispersion of hydrophobized titanium oxide, decamethylpentasiloxane, and polyglycerol-modified silicone (polyglyceryl-3 polydimethylsiloxyethyldimethicone); SPD-T5 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 2) Mixed dispersion of hydrophobized zinc oxide, decamethylpentasiloxane, and polyglycerol-modified silicone (polyglyceryl-3 polydimethylsiloxyethyldimethicone); SPD-Z5 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 3) Polyglyceryl-3 polydimethylsiloxyethyldimethicone; KF-6104 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 4) PEG-9 polydimethylsiloxyethyldimethicone; KF-6028P (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 5) Polyglyceryl-3 disiloxane dimethicone; KF-6100 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 6) PEG-9 dimethicone; KF-6013 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 7) Methylphenylpolysiloxane swelling composition of partially crosslinked silicone; KSG-18A (manufactured by Shin-Etsu Chemical Co., Ltd.) partially crosslinked silicone: methylphenylpolysiloxane = 15:85 (mass/mass)

(Note 8) KF-56A (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Note 9) Aristoflex AVC (manufactured by Clariant)

(Note 10) Simulgel600 (manufactured by Seppic)

Ingredient (% by mass) Comparative example One 2 3 4 5 One Hydrophobic titanium oxide/polyglycerin modified silicone/decamethylpentasiloxane dispersion (Note 1)
-
12.50
12.50
12.50
25.00 2 Hydrophobic zinc oxide/polyglycerin modified silicone/decamethylpentasiloxane dispersion (Note 2)
-
17.50
17.50
17.50
35.00 3 Hydrophobic treatment titanium oxide (100nm) 5.00 - - - - 4 Hydrophobic treatment zinc oxide (30nm) 10.50 - - - - 5 Decamethylpentasiloxane 12.38 - - - - 6 Polyglycerin-modified silicone 1 (Note 3) - 0.30 0.30 0.30 0.30 7 Polyether modified silicone 1 (Note 4) 2.42 - - - - 8 Polyglycerin-modified silicone 2 (Note 5) - 0.60 0.60 0.60 0.60 9 Polyether modified silicone 2 (Note 6) 0.60 - - - - 10 Partially crosslinked silicone/methylphenylpolysiloxane swelling composition (Note 7) 3.00 3.00 3.00 3.00 3.00 11 Methylphenylpolysiloxane (Note 8) - - - - - 12 Ammonium acryloyldimethyltaurate/vinylpyrrolidone copolymer (Note 9) 0.65 0.65 0.65 - 0.65 13 (Acrylamide/Acryloyldimethyltaurine Na) Copolymer/Isohexadecane/Polysorbate 80·Aqueous Solution (Note 10)
1.20
1.20
-
-
1.20 14 Polyoxyethylene (80) hydrogenated castor oil 0.13 3.50 - 0.13 0.13 15 Polysorbate 80 - - - - - 16 1,3-butylene glycol 3.00 3.00 3.00 3.00 3.00 17 Sodium chloride 0.08 0.08 0.08 0.08 0.08 18 antiseptic Appropriate amount Appropriate amount Appropriate amount Appropriate amount Appropriate amount 19 water Balance Balance Balance Balance Balance Sum 100.00 100.00 100.00 100.00 100.00

-Manufacturing method-

A: Components 1-11 were uniformly dispersed.

B: Components 12-19 were uniformly dispersed, and the mixture obtained in A was uniformly dispersed.

-Emulsibility evaluation-

For the test products of Examples 1 to 5 and Comparative Examples 1 to 5, the emulsified state was confirmed with an optical microscope and visual observation, and evaluation was performed according to the following criteria.

-Criteria-

◎: It is an oil-in-water type emulsion.

(Circle): It is an oil-in-water type emulsion, but the existence of a combined product of 30 micrometers or more in diameter is confirmed.

X: Inability to emulsify or a water-in-oil emulsion.

-Evaluation of usability-

About the test products of the said Examples 1-5 and Comparative Examples 1-5, the absence of stickiness at the time of application|coating, and the freshness were evaluated by the evaluation criteria shown in Table 3. The results were determined according to the following criteria based on the average value of 10 people.

Item No stickiness verdure 5 points good good 4 points Somewhat good Somewhat good 3 points usually usually 2 points Somewhat bad Somewhat bad 1 point Bad Bad

-Criteria-

◎: Average score of 4.5 or more

○: Average point is more than 3.5 points and less than 4.5 points

△: Average score is 2.5 points or more and less than 3.5 points

X: Average point is more than 1.5 points and less than 2.5 points

××: Average point is less than 1.5 points

-: Cannot be evaluated due to poor emulsification.

-Preservation stability evaluation-

The test products of Examples 1 to 5 and Comparative Examples 1 to 5 were evaluated based on the following criteria from the viscosity change immediately after preparation and after standing at 50°C for 1 month, and the results of observation with an optical microscope. The viscosity after standing at 50°C for 1 month was measured after standing at 25°C for 8 hours.

-Criteria-

(Double-circle): The change in viscosity is less than 50%, and there is no significant change in state compared to immediately after preparation in observation with an optical microscope.

(Circle): The change in viscosity is less than 50 to 100%, and there is no significant change in state compared to immediately after preparation in observation with an optical microscope. Alternatively, the viscosity change is less than 50%, and a slight change in state is observed compared to immediately after preparation in observation with an optical microscope.

(Triangle|delta): The viscosity change is less than 50-100%, and, in the optical microscope observation, a slight change in state is observed compared to immediately after preparation.

X: It is separated.

About the test products of the said Examples 1-5 and Comparative Examples 1-5, the result of evaluation about emulsification property, a feeling of use, and storage stability is shown in Table 4.

Item Example Comparative example One 2 3 4 5 One 2 3 4 5 Emulsification ◎ ◎ ◎ ○ ◎ △ △ × × × No stickiness ◎ ◎ ◎ ○ ○ ○ × - - - verdure ◎ ◎ ◎ ◎ ◎ ◎ ◎ - - - Storage stability ◎ ◎ ○ ○ ○ × ◎ - - -

As is clear from Table 4, the oil-in-water emulsified cosmetics of Examples 1 to 5 have better emulsification properties and storage stability than Comparative Examples 1 to 5, and have no stickiness at the time of application, and excellent usability in freshness. It was demonstrated.

[Example 6]

By the formulation shown in Table 5, an oil-in-water type sunburn prevention cosmetic was produced.

mass% One Hydrophobic titanium oxide/polyglycerin modified silicone/decamethylpentasiloxane dispersion (Note 1) 12.50 2 Hydrophobic zinc oxide/polyglycerin modified silicone/decamethylpentasiloxane dispersion (Note 2) 17.50 3 Polyglycerin-modified silicone 1 (Note 3) 0.30 4 Polyglycerin-modified silicone 2 (Note 5) 0.60 5 Partially crosslinked silicone/methylphenylpolysiloxane swelling composition (Note 7) 3.00 6 Ethylhexyl methoxycinnamate 3.00 7 Ammonium acryloyldimethyltaurate/vinylpyrrolidone copolymer (Note 9) 0.65 8 (Acrylamide/Acryloyldimethyltaurine Na) Copolymer/Isohexadecane/Polysorbate 80·Aqueous Solution (Note 10) 1.20 9 Polyoxyethylene (80) hydrogenated castor oil 0.13 10 1,3-butylene glycol 3.00 11 Sodium chloride 0.08 12 antiseptic Appropriate amount 13 water Balance Sum 100.00

-Manufacturing method-

A: Components 1-6 were uniformly dispersed.

B: Components 7 to 13 were uniformly dispersed, and the mixture obtained in A was uniformly dispersed to obtain an oil-in-water emulsion cosmetic.

It was confirmed that the oil-in-water type sunburn-preventing cosmetic obtained in Example 6 has good emulsification properties, no stickiness, excellent fresh touch, and excellent stability because there is no change over temperature and time.

[Example 7]

With the formulation shown in Table 6, an oil-in-water type sunburn prevention cosmetic was produced.

mass% One Hydrophobic titanium oxide/polyglycerin modified silicone/decamethylpentasiloxane dispersion (Note 1) 12.50 2 Hydrophobic zinc oxide/polyglycerin modified silicone/decamethylpentasiloxane dispersion (Note 2) 17.50 3 Polyglycerin-modified silicone 1 (Note 3) 0.30 4 Polyglycerin-modified silicone 2 (Note 5) 0.60 5 Partially crosslinked silicone/methylpolysiloxane swelling composition (Note 11) 3.00 6 Ethylhexyl methoxycinnamate 7.50 7 (Alkyl acrylate/dimethicone) copolymer solution (Note 12) 1.50 8 Ammonium acryloyldimethyltaurate/vinylpyrrolidone copolymer (Note 9) 0.65 9 (Acrylamide/Acryloyldimethyltaurine Na) Copolymer/Isohexadecane/Polysorbate 80·Aqueous Solution (Note 10) 1.20 10 Polyoxyethylene (80) hydrogenated castor oil 0.13 11 1,3-butylene glycol 3.00 12 Sodium chloride 0.08 13 antiseptic Appropriate amount 14 water Balance Sum 100.00

(Note 11) Methylpolysiloxane swelling composition of partially crosslinked silicone; KSG-16 (manufactured by Shin-Etsu Chemical Co., Ltd.) partially crosslinked silicone: methylpolysiloxane = 25:75 (mass/mass)

(Note 12) Decamethylcyclopentasiloxane solution of (alkyl acrylate/dimethicone) copolymer; KP-545 (manufactured by Shin-Etsu Chemical Co., Ltd.)

(Alkyl acrylate/dimethicone) copolymer: decamethylcyclopentasiloxane = 30:70 (mass/mass)

-Manufacturing method-

A: Components 1-7 were uniformly dispersed.

B: Components 8-14 were uniformly dispersed, and the mixture obtained in A was uniformly dispersed to obtain an oil-in-water emulsion cosmetic.

It was confirmed that the oil-in-water type sunburn prevention cosmetic obtained in Example 7 had good emulsification properties, no stickiness, excellent fresh touch, and excellent stability due to no change over temperature and time.

Advantageous Effects of Invention According to the present invention, it is possible to provide an oil-in-water type sunburn prevention cosmetic that has good dispersibility of the ultraviolet scattering agent in the oil phase, has excellent storage stability, does not feel sticky, and has a fresh touch upon application.

Claims (10)

An oil-in-water type sunburn prevention cosmetic comprising the following (a), (b) and (c) components dispersed in an aqueous phase containing the following (d), (e) and (f) components. .
(a) one type of silicone activator selected from polyglyceryl-3disiloxane dimethicone, polyglyceryl-3polydimethylsiloxyethyldimethicone and laurylpolyglyceryl-3polydimethylsiloxyethyldimethicone or 2 or more: 0.01 to 7% by mass,
(b) low viscosity silicone oil with a viscosity of 1 to 100 mm ² /s at 25°C: 1 to 50% by mass,
(c) ultraviolet scattering agent comprising hydrophobized inorganic powder: 0.01 to 30 mass%
(d) (acryloyldimethyltaurine ammonium/vinylpyrrolidone) copolymer, (acryloyldimethyltaurine Na) copolymer, (hydroxyethyl acrylate/acryloyldimethyltaurine Na) copolymer, ( Acrylic polymer compound selected from acrylamide/acryloyldimethyltaurine Na) copolymer and polyacrylamide: 0.01 to 5% by mass,
(e) 1 type or 2 or more types of HLB10 or more nonionic surfactants: 0.01 to 3% by mass,
(f) Water: 5 to 95% by mass. The characterized in that it is obtained by dispersing the ultraviolet scattering agent of the component (c) in the oil phase containing the component (b) in the presence of the component (a), and adding this to the aqueous phase component containing the component (d). An oil-in-water cosmetic that prevents sunburn. The oil-in-water type sunburn prevention cosmetic according to claim 1, wherein (b) the low viscosity silicone oil is phenyl silicone. The oil-in-water type sunburn prevention cosmetic according to claim 3, wherein the phenylsilicone is diphenylsiloxyphenyltrimethicone. The oil-in-water type sunburn prevention cosmetic according to claim 1, wherein (b) the low viscosity silicone oil is decamethylcyclopentasiloxane and diphenylsiloxyphenyltrimethicone. The oil-in-water type sunburn prevention cosmetic according to claim 1, wherein (e) the nonionic surfactant of HLB10 or higher is hydrogenated hydrogenated castor oil obtained by ether bonding of polyoxyethylene. The oil-in-water type sunburn prevention cosmetic according to claim 1, wherein the blending amount of the component (e) is 0.01 to 0.5% by mass of the total amount of the oil-in-water type sunburn prevention cosmetic. The oil-in-water type sunburn prevention cosmetic according to claim 1, further comprising 0.5 to 30% by mass of the partially crosslinked silicone swelling composition (g) in the oil phase. The oil-in-water type sunburn prevention cosmetic according to claim 1, further comprising (h) a silicone-based film-forming agent in the oil phase. The oil-in-water type sunburn prevention cosmetic according to claim 1, further comprising (i) 0.1 to 10.0 mass% of an organic ultraviolet absorber in the oil phase.

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