JP2022161452A - Emulsion cosmetic - Google Patents

Abstract

To provide an emulsion cosmetic that can be spread on skin softly and uniformly during its application, and gives a good finish with the skin retaining its moisture.SOLUTION: An emulsion cosmetic contains following components (A), (B) and (C): (A) an ultraviolet absorber having a sulfonic acid group, (B) a hydrocarbon oil that is liquid at 25°C, and (C) a glycerine fatty acid ester that is solid at 25°C.SELECTED DRAWING: None

Description

TECHNICAL FIELD The present invention relates to emulsified cosmetics.

Conventionally, in order to obtain cosmetics having an ultraviolet protection effect, cosmetics containing phenylbenzimidazole sulfonic acid, which is a water-soluble ultraviolet protection agent, have been studied.
For example, in Patent Document 1, phenylbenzimidazole sulfonic acid, 2-amino-2-methyl-1,3-propanediol and/or 2-amino-2-(hydroxymethyl)propane-1,3- It is described that a water-in-oil type sunscreen cosmetic containing a diol and octyl methoxycinnamate does not cause offensive odor and is excellent in emulsion stability.

JP 2011-153079 A

However, although conventional cosmetics are excellent in UV protection effect, they have problems such as being hard during application to the skin, tending to be uneven when stretched, and inferior in moisturizing feeling of the makeup skin.

The present inventors have found that by using a combination of a hydrocarbon oil that is liquid at 25°C and a glycerin fatty acid ester that is solid at 25°C as an ultraviolet absorber having a sulfonic acid group, the skin becomes soft and uniform during application. The present inventors have found that an emulsified cosmetic that can be spread and has excellent moisturizing feeling on the makeup skin and excellent makeup adhesion can be obtained, and completed the present invention.

The present invention provides the following components (A), (B) and (C):
(A) an ultraviolet absorber having a sulfonic acid group;
(B) a hydrocarbon oil that is liquid at 25°C;
(C) It relates to an emulsified cosmetic containing a glycerin fatty acid ester that is solid at 25°C.

The emulsified cosmetic of the present invention is excellent in UV protection effect, can be spread softly and uniformly on the skin during application, and is excellent in moisturizing feeling of makeup skin and makeup adhesion.

The UV absorber having a sulfonic acid group of component (A) used in the present invention is a water-soluble UV absorber, specifically, hydroxymethoxybenzophenone sulfonic acid, phenylbenzimidazole sulfonic acid, phenyldibenzimidazole tetra sulfonic acid, terephthalylidene dicamphorsulfonic acid, and the like. For example, as hydroxymethoxybenzophenone sulfonic acid, Ubinal MS40 (manufactured by BASF), as phenylbenzimidazole sulfonic acid, EUSOLEX232 (manufactured by Merck), Neo Heliopan Hydro (manufactured by Simrise), as phenyldibenzimidazole tetrasulfonic acid Commercially available products such as Neo Heliopan AP (manufactured by Simrise) and Mexoryl SX (manufactured by Chimex) can be used as terephthalylidene dicamfursulfonic acid. Among these, it preferably contains phenylbenzimidazole sulfonic acid and/or phenyldibenzimidazole tetrasulfonic acid, and at least contains phenylbenzimidazole sulfonic acid, from the viewpoint of excellent biosafety and obtaining a good UV protection effect. is more preferable.

The content of component (A) is preferably 0.5% by mass or more, more preferably 0.8% by mass or more, and even more preferably 1% by mass or more in the entire composition, from the viewpoint of enhancing the UV protection effect. , is preferably 10% by mass or less, more preferably 5% by mass or less, and even more preferably 3% by mass or less. The content of component (A) is preferably 0.5 to 10% by mass, more preferably 0.8 to 5% by mass, and even more preferably 1 to 3% by mass in the total composition.

The UV absorber having a sulfonic acid group of component (A) can be used as a neutralized salt for the purpose of increasing the solubility in water. Amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propanediol, N-methyltaurate sodium, 2-amino-2-hydroxymethyl-1,3-propanediol, L-arginine It is preferable to make a neutralized salt using such as.

Component (B) used in the present invention is a hydrocarbon oil that is liquid at 25°C. Here, the term “liquid at 25° C.” means that the substance has fluidity at 25° C., and includes pasty substances.
The hydrocarbon oil of component (B) may be any one that is used in ordinary cosmetics, such as liquid paraffin, light isoparaffin, light liquid isoparaffin, liquid isoparaffin, hydrogenated polyisobutene, mineral oil, polybutene, Linear or branched hydrocarbon oils such as polyisobutene, hydrogenated polydecene, squalane, squalene, petrolatum and the like are included.
Among these, from the viewpoint of forming a uniform coating film, non-volatile hydrocarbons are preferable, and straight hydrocarbons such as liquid paraffin, liquid isoparaffin, hydrogenated polyisobutene, mineral oil, polybutene, polyisobutene, hydrogenated polydecene, squalane, squalene, petrolatum, etc. Chain or branched hydrocarbon oils are more preferred.
The viscosity of liquid hydrocarbon oils is measured at 25° C. using a Brookfield viscometer.

Component (B) can be used alone or in combination of two or more, and the content is preferably 1% by mass or more in the entire composition from the viewpoint of forming a uniform coating film. It is more preferably 5% by mass or more, more preferably 20% by mass or less, more preferably 12% by mass or less, and even more preferably 8% by mass or less. The content of component (B) is preferably 1 to 20% by mass, more preferably 3 to 12% by mass, and even more preferably 5 to 9% by mass in the total composition.

Component (C) used in the present invention is a glycerin fatty acid ester that is solid at 25°C. Here, the term "solid at 25°C" means that the substance exhibits semi-solid to solid properties at 25°C.
The glycerin fatty acid ester is preferably a triester, which stably retains the component (A) in the aqueous phase, forms a uniform coating film, enhances the UV protection effect, and spreads softly and uniformly on the skin during application. From the standpoint of moisturizing the makeup skin and excellent makeup adhesion, triglycerides of fatty acids with 20 to 28 carbon atoms are more preferred, triglycerides of fatty acids with 20 to 24 carbon atoms are even more preferred, and tribehenin is even more preferred.

Component (C) can be used alone or in combination of two or more. It is preferably 0.5% by mass or more in the total composition, and is preferably 0.8% by mass or more, from the viewpoints of being able to spread softly and evenly during application to the skin, and being excellent in moisturizing feeling of makeup skin and makeup adhesion. % or more, more preferably 1% by mass or more, preferably 10% by mass or less, more preferably 6% by mass or less, and even more preferably 3% by mass or less. The content of component (C) is preferably 0.5 to 10% by mass, more preferably 0.8 to 6% by mass, and even more preferably 1 to 3% by mass in the total composition.

In the present invention, the mass ratio (C)/(A) of the component (C) to the component (A) is such that the component (A) is stably retained in the aqueous phase, a uniform coating film is formed, and the UV protection effect is achieved. It is preferably 0.2 or more, more preferably 0.5 or more, and 1 or more, from the viewpoints of being able to increase and spread softly and evenly during application to the skin, and to provide a moisturizing feeling of the makeup skin and excellent makeup adhesion. is more preferred, 10 or less is preferred, 4 or less is more preferred, and 3 or less is even more preferred. The mass ratio (C)/(A) of component (C) to component (A) is preferably 0.2-10, more preferably 0.5-4, and even more preferably 1-3.

In the present invention, the mass ratio (C)/(B) of the component (C) to the component (B) is such that the component (A) is stably retained in the aqueous phase, a uniform coating film is formed, and the UV protection effect is achieved. It is preferably 0.05 or more, more preferably 0.1 or more, more preferably 0.1 or more, from the viewpoints of being able to spread softly and uniformly on the skin during application, and being excellent in moisturizing feeling of makeup skin and makeup adhesion. It is more preferably 2 or more, preferably 1 or less, more preferably 0.8 or less, and even more preferably 0.6 or less. Further, the mass ratio (C)/(B) of component (C) to component (B) is preferably 0.05 to 1, more preferably 0.1 to 0.8, and 0.2 to 0. .6 is more preferred.

The emulsified cosmetic of the present invention can further contain (D) a nonionic surfactant, and can form a uniform coating film.
Examples of nonionic surfactants include sorbitan fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, propylene glycol fatty acid ester, polyethylene glycol fatty acid ester, sucrose fatty acid ester, polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid. Ester, polyoxyethylene alkyl ether, polyoxyethylene sorbitol fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene propylene glycol fatty acid ester, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil fatty acid ester, polyoxyethylene phytostanol ether, polyoxyethylene phytosterose ether, polyoxyethylene cholestanol ether, polyoxyethylene cholesteryl ether, alkylglyceryl ether-modified silicone, polyether-modified silicone, polyoxyalkylene/alkyl co-modified silicone, Examples include polyoxyalkylene/fluoroalkyl co-modified silicone.

In the case of a water-in-oil emulsified cosmetic, the nonionic surfactant preferably has an HLB value of 6 or less from the viewpoint of enhancing the dispersion and solubility of water and water-soluble ingredients in oil. 1 to 6 are more preferred, and an HLB value of 2 to 6 is even more preferred.

Here, HLB (Hydrophilic-Lipophilic Balance) indicates the molecular weight of the hydrophilic group portion in the total molecular weight of the surfactant. Griffin) formula.

The nonionic surfactant is preferably a polyhydric alcohol fatty acid ester type surfactant that has an HLB value of 6 or less and is liquid at 25° C., more preferably a sorbitan fatty acid ester. Sorbitan fatty acid esters include, for example, sorbitan monoisostearate, sorbitan sesquiisostearate, and sorbitan sesquioleate.

Component (D) can be used alone or in combination of two or more, and the content is 0.1% by mass or more in the entire composition from the viewpoint of being able to form a uniform coating film. is preferably 0.5% by mass or more, more preferably 1% by mass or more, preferably 10% by mass or less, more preferably 5% by mass or less, and even more preferably 3% by mass or less. The content of component (D) is preferably 0.1 to 10% by mass, more preferably 0.5 to 5% by mass, and even more preferably 1 to 3% by mass in the total composition.

The emulsified cosmetic of the present invention may further contain (E) a coloring pigment.
Coloring pigments used in ordinary cosmetics include titanium oxide, zinc oxide, cerium oxide, aluminum oxide, yellow iron oxide, black iron oxide, red iron oxide, Prussian blue, ultramarine blue, chromium oxide, chromium hydroxide, and the like. metal oxides, manganese violet, metal complexes such as cobalt titanate, and inorganic pigments such as carbon black; Red No. 220, Red No. 226, Red No. 227, Red No. 228, Red No. 230, Red No. 401, Red No. 405, Red No. 505, Orange No. 203, Orange No. 204, Orange No. 205, Yellow No. 4, Synthetic organic pigments such as Yellow No. 5, Yellow No. 401, Blue No. 1, and Blue No. 404; natural organic pigments such as β-carotene, caramel, and paprika pigment; Composite pigments in which a pigment and a pearl pigment are combined, and the like are included. Examples of pearl pigments to be treated include mica, phlogopite, talc, silica, sericite, mica, glass, kaolin, bismuth oxychloride, cerium oxide, calcium sulfate, barium sulfate, magnesium sulfate, and plate-like alumina powder. Natural or synthetic inorganic powders can be mentioned. Specific examples of composite pigments include titanium oxide-coated mica, iron oxide-coated mica, iron oxide-coated mica titanium, iron oxide-coated synthetic phlogopite, chromium oxide-coated titanium mica, titanium oxide-coated glass powder, iron oxide-coated glass powder, oxide Titanium-encapsulated glass powder, iron oxide-encapsulated glass powder, and the like can be mentioned.
The coloring pigment is preferably at least one or more selected from titanium oxide, yellow iron oxide, black iron oxide, and red iron oxide, and more preferably includes at least titanium oxide, yellow iron oxide, black iron oxide, and red iron oxide.

These color pigments can be used as they are, or can be used after being hydrophobized.
Hydrophobic treatments include, for example, silicone treatment, alkyl treatment, alkylsilane treatment, metal soap treatment, water-soluble polymer treatment, amino acid treatment, acylated amino acid treatment, lecithin treatment, organic titanate treatment, polyol treatment, acrylic resin treatment, Surface treatments such as methacrylic resin treatment, urethane resin treatment and fluorine compound treatment can be mentioned. Among them, silicone treatment, alkylsilane treatment, amino acid treatment, and acylated amino acid treatment are preferred from the viewpoint of good adhesion to the skin and suppression of secondary adhesion.
A conventional method can be used to hydrophobilize the color pigment.

One or two or more of the color pigments of component (E) can be used, and the content is preferably 1 to 30% by mass in the total composition from the viewpoint of finishing the skin with a beautiful makeup effect. Preferably, 3 to 25% by mass, and even more preferably 4 to 18% by mass.

The emulsified cosmetic of the present invention can further contain an oil-soluble ultraviolet absorber, and any of those used in ordinary cosmetics can be used.
Specifically, salicylic acid-based UV absorbers such as homomenthyl salicylate, octyl salicylate, and triethanolamine salicylate;
para-aminobenzoic acid-based UV absorbers such as para-aminobenzoic acid, ethyldihydroxypropyl para-aminobenzoic acid, glyceryl para-aminobenzoic acid, octyldimethyl para-aminobenzoic acid, amyl paradimethylaminobenzoate, and 2-ethylhexyl paradimethylaminobenzoate;
4-(2-β-glucopyranosiloxy)propoxy-2-hydroxybenzophenone, dihydroxydimethoxybenzophenone, dihydroxydimethoxybenzophenone sodium disulfonate, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone-5- sulfuric acid, 2,2'-dihydroxy-4-methoxybenzophenone, 2,4-dihydroxybenzophenone, 2,2'4,4'-tetrahydroxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2 - Benzophenone UV absorbers such as hydroxy-4-N-octoxybenzophenone;
2-Ethylhexyl paramethoxycinnamate (eg, Ubinal MC80; manufactured by BASF), glyceryl mono-2-ethylhexanoate diparamethoxycinnamate, methyl 2,5-diisopropylcinnamate, 2,4,6-tris [4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-triazine (e.g., Uvinal T150; manufactured by BASF), methylbis(trimethylsiloxy)silylisopentyl trimethoxycinnamate, paramethoxycinnamon Cinnamic acid-based UV absorbers such as isopropyl acid/diisopropyl cinnamic acid ester mixtures and p-methoxyhydrocinnamic acid diethanolamine salts;
2-Phenyl-benzimidazole-5-sulfuric acid, 4-isopropyldibenzoylmethane, 4-tert-butyl-4'-methoxydibenzoylmethane (for example, Parasol 1789; manufactured by DSM Nutrition Japan) and other benzoylmethane-based UV-absorbing agent;
Octocrylene (eg, Parasol 340; manufactured by DSM Nutrition Japan), 2-ethylhexyl dimethoxybenzylidene dioxoimidazolidinepropionate (eg, Soft Shade DH; manufactured by Ajinomoto Co.), 1-(3,4-dimethoxyphenyl)-4, 4-dimethyl-1,3-pentanedione, cinoxate, methyl-O-aminobenzoate, 3-(4-methylbenzylidene)camphor, octyltriazone, diethylaminohydroxybenzoyl benzoic acid hexyl ester (e.g., Uvinal Aplus; manufactured by BASF) , bisethylhexyloxyphenol methoxyphenyltriazine (e.g., Tinosorb S; manufactured by BASF), methylenebisbenzotriazolyltetramethylbutylphenol (e.g., Tinosorb M; manufactured by BASF), one or more selected from these can be used.
When using one that is solid at 20°C, it is preferable to dissolve it in an oil that is liquid at 20°C from the viewpoint of improving the stability of the cosmetic.

Among these, 2-ethylhexyl paramethoxycinnamate (eg, Uvinal MC80; manufactured by BASF), 2,4,6-tris[4-(2-ethylhexyl) are used from the viewpoint of improving the ultraviolet absorption effect of cosmetics. oxycarbonyl)anilino]-1,3,5-triazine (e.g., Ubinal T150; manufactured by BASF), 4-tert-butyl-4'-methoxydibenzoylmethane (e.g., Parasol 1789; manufactured by DSM Nutrition Japan), octocrylene (e.g., Parasol 340; manufactured by DSM Nutrition Japan), 2-ethylhexyl dimethoxybenzylidene dioxoimidazolidinepropionate (e.g., Soft Shade DH; manufactured by Ajinomoto Co.), diethylaminohydroxybenzoyl hexyl benzoate (e.g., Uvinal Aplus; BASF) ), bisethylhexyloxyphenol methoxyphenyltriazine (e.g., Tinosorb S; manufactured by BASF), and methylenebisbenzotriazolyltetramethylbutylphenol (e.g., Tinosorb M; manufactured by BASF). One or more selected from 2-ethylhexyl paramethoxycinnamate, diethylaminohydroxybenzoyl hexyl benzoate, and bisethylhexyloxyphenol methoxyphenyltriazine are more preferred.

One or two or more oil-soluble UV absorbers can be used, and the content is preferably 1 to 15% by mass in the total composition from the viewpoint of further enhancing the UV protection effect, and 2 to 10 % by mass is more preferred, and 3 to 8% by mass is even more preferred.

In the present invention, the content of water in the entire composition is preferably 1% by mass or more, more preferably 20% by mass or more, further preferably 30% by mass or more, further preferably 70% by mass, from the viewpoint of excellent usability. The following is preferable, 65% by mass or less is more preferable, and 60% by mass or less is even more preferable. Also, the content of water is preferably 1 to 70% by mass, more preferably 20 to 65% by mass, and even more preferably 30 to 60% by mass in the total composition.

The emulsified cosmetic composition of the present invention can contain various components used in ordinary cosmetics, in addition to the components described above, within a range that does not impair the effects of the present invention. These components include, for example, oily components other than the above, powders other than the above, surfactants other than the above, water-soluble polymers, antioxidants, vitamins, preservatives, pH adjusters, fragrances, and plant extracts. emollients, moisturizing agents, coloring agents, cooling agents, antiperspirants, bactericides, skin activators and the like.

The emulsified cosmetic of the present invention can be produced by a conventional method. Either a water-in-oil emulsified cosmetic, an oil-in-water emulsified cosmetic, or the like can be used, and a water-in-oil emulsified cosmetic is preferred.
Moreover, it can be in the form of liquid, milky lotion, paste, cream, gel, solid, and the like.
The emulsified cosmetic composition of the present invention can be used for cosmetics, quasi-drugs, and pharmaceutical applications. make-up cosmetics; can be applied as UV protection cosmetics such as sunscreen emulsions and sunscreen creams. It is suitable as a make-up cosmetic.

Examples 1-9, Comparative Examples 1-4
A water-in-oil emulsified cosmetic (base cosmetic) having the composition shown in Table 1 was produced, and the SPF was measured. The wear and make-up paste were evaluated. The results are also shown in Table 1.

(Production method)
The powder phase components were mixed and pulverized, added to separately mixed oil phase components containing components (B) and (C), and dispersed by a disper. After that, an aqueous phase component containing the component (A) was added, dispersed with a disper, and stirred with a homomixer to obtain a water-in-oil emulsified cosmetic (base cosmetic).

(Evaluation method)
(1) UV protection effect (SPF value)
Each cosmetic was uniformly applied on a PMMA plate so as to be 1.4 mg/cm ² for 1 minute and dried in a cool and dark place for 15 minutes. After drying the sample, an SPF analyzer (UV2000S, manufactured by Labsphere, USA) was used to measure the absorption spectrum (wavelength 350 nm) at a total of 9 points on the square PMMA plate, the middle point, each vertex, and the middle point of the side connecting each vertex. The transmittance (%) was measured, and the average of 9 points was obtained. The results show the SPF value (-) calculated from the transmittance (%).

(2) Moisturizing feeling (fresh moisturizing feeling):
The freshness of the makeup skin after applying each base cosmetic was sensory evaluated by three expert panelists according to the following criteria. The results were indicated by the total score of the three persons.
5; Feels very fresh.
4; Freshness is felt.
3; Freshness is slightly felt.
2; Freshness is not felt so much.
1; Freshness is not felt.

(3) Uniform spreadability:
Each base cosmetic was applied to the skin by three expert panelists, and the uniform spreadability during application was sensory evaluated according to the following criteria. The results were indicated by the total points of the three persons.
5; It spreads fairly evenly on the skin.
4; It spreads evenly on the skin.
3; spreads somewhat evenly on the skin 2; does not spread evenly on the skin 1; does not spread evenly on the skin.

(4) Softness of cosmetics during application to skin:
Each of the base cosmetics was applied to the skin by three expert panelists, and sensory evaluation was made of the feel of the skin when the skin was touched with the palm according to the following criteria. The results were indicated by the total points of the three persons.
5; The skin is soft when touched with the palm.
4; The skin is slightly soft when touched with the palm.
3; The skin is not very soft when touched with the palm.
2; The skin is not soft when touched with the palm.
1; The skin is not soft at all when touched with the palm.

(5) Makeup glue:
Sensory evaluation was made by three expert panelists according to the following criteria for the makeup paste when each base cosmetic was applied to the skin. The results were indicated by the total points of the three persons.
5; The makeup paste is quite good.
4; The makeup paste is good.
3; The make-up paste is slightly good.
2; The makeup paste is not very good.
1; The makeup paste is not good.

Examples 10-13
A water-in-oil emulsified cosmetic (foundation) having the composition shown in Table 2 was produced in the same manner as in Examples 1 to 9.
Each of the obtained water-in-oil emulsified cosmetics has a high SPF value, an excellent UV protection effect, a soft cosmetic during application, a uniform spreading feeling, and a moisturizing feeling (fresh moisturizing feeling) and makeup. Glue is also good.

Claims (9)

The following components (A), (B) and (C):
(A) an ultraviolet absorber having a sulfonic acid group;
(B) a hydrocarbon oil that is liquid at 25°C;
(C) An emulsified cosmetic containing a glycerin fatty acid ester that is solid at 25°C. The emulsified cosmetic composition according to claim 1, wherein the content of component (A) is 0.5 to 10% by mass. The emulsified cosmetic composition according to claim 1 or 2, wherein the content of component (B) is 2 to 20% by mass. The emulsified cosmetic composition according to any one of claims 1 to 3, wherein the content of component (C) is 0.5 to 10% by mass. The emulsified cosmetic composition according to any one of claims 1 to 4, wherein component (B) is a non-volatile hydrocarbon oil. The emulsified cosmetic composition according to any one of claims 1 to 5, wherein component (C) is a triglyceride of a fatty acid having 20 to 28 carbon atoms. The emulsified cosmetic composition according to any one of claims 1 to 6, wherein the mass ratio (C)/(A) of component (C) to component (A) is 0.2-10. The emulsified cosmetic composition according to any one of claims 1 to 7, further comprising (D) a nonionic surfactant having an HLB of 6 or less. The emulsified cosmetic according to any one of claims 1 to 8, which is a water-in-oil type emulsified cosmetic.