TWI646977B - Oil-in-water emulsified cosmetic for skin - Google Patents

Abstract

A skin cosmetic comprising an oil-in-water emulsified cosmetic for skin containing the following ingredients (a) to (e) and an oil-in-water emulsified cosmetic for skin containing a solid oil further containing the ingredient (f):

(a) Powder

(b) Compounds selected from the group consisting of lecithin, polymers or copolymers containing choline phosphate in structural components, amino acids, fluorinated amino acids, and polyoxyethylene coconut oil fatty acid glycerides

(c) Film-forming agent selected from the group consisting of polyvinyl acetate and polyvinyl alcohol

(d) Polyol

(e) Water; it is a cosmetic film with high makeup and long-lasting effect, and can also be simply removed with warm water, etc., to meet this contradictory nature of skin cosmetics.

Description

Oil-in-water emulsified cosmetic for skin

The invention relates to a cosmetic film capable of forming a high affinity with the skin and a long-lasting makeup effect. At the same time, the cosmetic film can be easily removed with warm water and is an oil-in-water emulsified cosmetic material for skin. More specifically, it relates to the formation of a high affinity on the skin by containing a powder, a specific compound, one or more film-forming agents selected from the group consisting of polyvinyl acetate and polyvinyl alcohol, a polyhydric alcohol, and water. It is a soft and flexible cosmetic film to enhance the long-lasting effect of makeup, and gives the cosmetic film an oil-in-water emulsified cosmetic material for skin that is easy to fall off with warm water.

In the past, women used various types of makeup when applying makeup. However, in recent years, with the change of women's life patterns, cosmetics that can make up in a short period of time have been widely supported. As an example of such a cosmetic, an all-in-one product called BB cream (Blemish Balm) that combines beauty liquid, base makeup, and foundation has been widely known, and its demand has gradually increased.

In addition, the short time of this kind of makeup is not only required when applying makeup, but also when removing makeup. That is, if only washing with warm water is required If the cleansing face makeup film can be peeled off, the market demand is gradually increasing due to the advantages of shortening the time taken for makeup removal and reducing the irritation to the skin during makeup removal.

In addition, mascara is well-known in the makeup type that can be removed with warm water and water in a short time. The demand for film-type mascara that can be easily removed with warm water is increasing. The removal function has become one of the basic functions of mascara.

Traditionally, mascara that came off with warm water was a combination of a hydrophobic film-forming polymer and a heat transfer agent, or polyvinyl alcohol, a polymer containing (meth) acrylic acid as a constituent unit, and N-vinylpyrrole. Combination of a copolymer of pyridone and a monomer containing a double bond in the molecule, which has both a long-lasting makeup effect and a technology capable of removing the effect with water or warm water (for example, refer to Patent Documents 1 and 2), or has a different glass transfer A combination of a polymer film-forming agent at a temperature and a polymer film-forming agent that has been crosslinked to form a film having durability and a film that can be removed well with warm water, and the like (for example, Patent Document 3).

However, these technologies, which are mainly used for mascara, cannot be easily applied to other cosmetics, such as skin cosmetics. That is, the case of applying to eyelashes or fibrous substances similar to eyelashes and the case of applying to the skin. Due to different application amounts and application tools, and the state of the makeup film, it will correspond to the production of mascara. When the finished cosmetic material is directly applied to the skin, the cosmetic film becomes too stiff and the feeling of being held up cannot follow the change of expression; because the coating surface on the skin is wide and stretchable, etc. Poor usability, making uneven shapes such as wrinkles and pores Obviously, etc.

On the other hand, in Patent Document 4 published after the priority date of this application, a base makeup for skin removed with warm water has been disclosed. However, the material is basically free of powder, and since the material is a base makeup material used before applying the makeup material, it is significantly different from the present invention.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2002-29922

[Patent Document 2] Japanese Patent Laid-Open No. 2006-257052

[Patent Document 3] Japanese Special Table No. 2010-535224

[Patent Document 4] WO2014 / 058048 A1

Although it is necessary to shorten the makeup time as mentioned above, in general skin cosmetics, in order to improve the long-lasting effect of the makeup, it is difficult to remove the makeup with warm water if the hydrophobicity of the makeup is increased; otherwise, the makeup is improved The overall hydrophilicity increases the ease of shedding with warm water, which can hinder the long-lasting effect of makeup and the problem of uniformly forming a cosmetic film on the skin.

Therefore, the subject of the present invention is to provide an easily washable skin cosmetic material, which is not only a cosmetic film with high makeup and long-lasting effect, but also can be simply removed with warm water, etc., to satisfy this contradictory property.

In view of the above-mentioned problems, as a result of intensive research on skin cosmetics, the present inventors have found that although only powder and a film-forming agent are contained, the formation of the cosmetic film on the skin and the long-lasting effect of the makeup are Very inferior; but by using a specific substance as a film-forming agent and further containing a specific compound, a polyol, and water, while forming a soft makeup film with high makeup lasting effect and high skin affinity, it can also provide warmth Easily falling off water.

In more detail, it was found that by using a film-forming agent that is not too hydrophobic and hydrophilic, a cosmetic film with low viscosity and uniformity is obtained, and by combining a specific film-forming agent and a specific compound, While the affinity of the powder and oil to the skin can be adjusted, a uniform makeup film can be formed to improve the long-lasting effect of makeup. Furthermore, by combining a polyol and water, it is particularly excellent in stretchability during the formation of a cosmetic film, and a dry finished product can be obtained. It was also found that after applying this oil-in-water emulsified cosmetic material, and then applying other cosmetic materials, the cosmetic long-lasting effect of the cosmetic material was also improved, and the cosmetic material used after the application also obtained warm water that was easy to use. Effect of shedding.

The present invention is completed based on the above knowledge, and is an oil-in-water emulsified cosmetic for skin, which is characterized by containing the following ingredients (a) to (e).

(a) Powder

(b) Polymerization of lecithin with choline phosphate in its structural components Compound selected from the group consisting of polymers or copolymers, amino acids, fluorinated amino acids, and polyoxyethylene coconut oil fatty acid glycerides

(c) Film-forming agent selected from the group consisting of polyvinyl acetate and polyvinyl alcohol

(d) Polyol

(e) Water

The present invention is an oil-in-water emulsified cosmetic for skin, which is easily washable.

Furthermore, the present invention is the aforementioned oil-in-water emulsified cosmetic for skin with a content-to-mass ratio of a polyol of the component (d) and a content of water of the component (e) of 1: 5 to 1: 1.

The present invention is the aforementioned oil-in-water emulsified cosmetic for skin, which further contains solid oil as component (f), particularly solid oil having a melting point of 30 to 50 ° C.

The skin-in-water emulsified cosmetic material of the present invention is compatible with a soft cosmetic film that can form a long-lasting effect and high skin affinity, and the characteristic that the cosmetic film can be easily removed with warm water.

In addition, the skin-in-water oil-based emulsified cosmetic material of the present invention also possesses a smooth, well-formed, and uniform makeup film to produce a natural coverage effect and a dry finished product.

1‧‧‧easy to wash test device

2‧‧‧ Rotating friction member

3‧‧‧ warm water

4‧‧‧ warm water container

5‧‧‧test sample

6‧‧‧ support

7‧‧‧ Motor

8‧‧‧ Balancer

9‧‧‧ Clamp

10‧‧‧Rotary shaft

11‧‧‧rotary plate

12‧‧‧ wiper (artificial leather)

13‧‧‧Test sample base cloth (artificial leather)

14‧‧‧ coated sample

[Fig. 1] A diagram schematically showing a device for evaluating the washability in the present invention.

[Fig. 2] A diagram showing the structure of a rotating wiping member in the device of Fig. 1. [Fig.

[Fig. 3] A diagram showing the structure of a test sample for evaluation of washability.

The term "easy washability" in this specification means that it can be easily washed with warm water at a temperature of about 35 ° C, and can be easily removed even by warm water with a water temperature of 35 ° C or higher by washing the face. The presence or absence of this washability can be judged based on whether the ΔL value is 10 or more by the evaluation method (2) / physical experiments in the examples described later.

The oil-in-water emulsion cosmetic for skin (hereinafter referred to as "oil-in-water skin cosmetic") of the present invention contains the following components (a) to (e):

(a) Powder

(b) Compounds selected from the group consisting of lecithin, polymers or copolymers containing choline phosphate in structural components, amino acids, fluorinated amino acids, and polyoxyethylene coconut oil fatty acid glycerides

(c) Film-forming agent selected from the group consisting of polyvinyl acetate and polyvinyl alcohol

(d) Polyol

(e) Water

Among the structural components of the oil-in-water skin cosmetic of the present invention, as the powder of the component (a), as long as it is a powder generally used in cosmetics, for spherical, plate-like, needle-like shapes, smoke-like, The particle size of fine particles, pigment grade, etc., and the particle structure of porous and non-porous particles are not particularly limited. Examples include inorganic powders, glossy powders, organic powders, pigment powders, and metal powders. Class, composite powder class, etc.

More specific examples include white inorganic pigments such as titanium oxide, cerium oxide, and barium sulfate; colored oxides such as iron oxide, carbon black, titanium sintered titanium oxide, chromium oxide, chromium hydroxide, iron blue, ultramarine, and the like Inorganic pigments; talc, mica, synthetic mica, sericite, synthetic sericite, kaolin, silicon carbide, bentonite, smectite, anhydrous silicic acid, alumina, magnesia, zirconia, diatomaceous earth, silicic acid White body powders such as aluminum, magnesium magnesium silicate, calcium silicate, barium silicate, magnesium silicate, calcium carbonate, magnesium carbonate, hydroxyapatite, boron nitride, etc .; titanium oxide coated mica, titanium oxide coated Bismuth oxychloride, titanium oxide mica titanium, iron blue-treated mica titanium, carmine-treated titanium mica, bismuth oxychloride, fish scale foil, polyethylene terephthalate, aluminum, epoxy resin lamination, polyterephthalic acid Glossy powders such as ethylene formate, polyolefin laminated film, polyethylene terephthalate, polymethyl methacrylate laminated film, etc .; polyamide resin, polyethylene resin, polymer Acrylic resin, polyester resin, fluorine resin, cellulose Synthetic resin powder such as resin, polystyrene resin, styrene-acrylic copolymer resin; organic polymer resin powder such as polypropylene resin, polyurethane resin; zinc stearate, N- Organic low-molecular powders such as ethynyl lysine; natural organic powders such as silk powder and cellulose powder; red Organic pigment powders such as 201, red 202, red 205, red 226, red 228, orange 203, orange 204, blue 404, yellow 401, etc., red 3, red 104, Organic pigment powders such as red 106, orange 205, yellow 4, yellow 5, green 3, blue 1, and other zirconium, barium, or aluminum lakes; metal powders such as aluminum powder, gold powder, and silver powder ; Fine particles of titanium oxide coated mica titanium, barium sulfate coated mica titanium, titanium dioxide-containing silicon dioxide composite powder, and the like.

Among them, titanium oxide, iron oxide, barium sulfate, titanium oxide coated mica, talc, mica, synthetic mica, sericite (sericite), synthetic sericite, forming a uniform cosmetic film, natural coverage and dryness The finished product is better.

One or two or more of these component (a) powders can be used, and fluorine-based compounds, polysiloxanes, metal soaps, collagens, hydrocarbons, higher fatty acids, higher alcohols, esters, waxes, Rhenium, a surfactant, and the component (b) to be described later may be subjected to a surface treatment by a known method, and a composited material may be used.

In the oil-in-water skin cosmetic of the present invention, although the content of the powder of the component (a) is not particularly limited, from the viewpoints of watery and smooth extensibility, natural and uniform coverage, and long-lasting makeup, It is preferably 1 to 40% by mass ("%" in the following list), and more preferably 5% to 35%.

In addition, the component (b) used in the oil-in-water skin cosmetic of the present invention is composed of lecithin, a polymer or copolymer containing a choline phosphate as a structural component, an amino acid, a halogenated amino acid, and Polyoxyethylene coconut Seed oil fatty acid glyceride selected group of compounds.

This component (b) is not particularly limited as long as it is a compound having an affinity for water and skin, and is generally used in cosmetics, and any component may be used.

Examples of the lecithin in the component (b) include natural lecithin extracted from animals and plants such as egg yolk, soybeans, corn, and coliform bacteria and hydrides thereof, and synthetic lecithin.

Specific examples of lecithin include natural substances such as phospholipids choline, phospholipids ethanolamine, phospholipids serine, phospholipids inositol, lysophospholipids and choline, sphingomyelin, egg yolk lecithin, and soybean lecithin. Phospholipids; Dilaurin, Phospholipid, Choline, Dimyristyl, Phosphatidine, Choline, Dipalm, Phospholipid, Choline, Distearyl, Phospholipid, Choline, Diole, Phospholipid, Choline, Palm ‧ Oil Synthetic lecithins such as phospholipids and choline; hydrogenated lecithins such as hydrogenated soybean lecithin, hydrogenated egg yolk lecithin, hydrogenated phospholipids choline, hydrogenated phospholipids and serine.

Among them, hydrogenated lecithin is more suitable for the uniformity of the cosmetic film and the ease of shedding with warm water because of its moderate skin adhesion and water dispersibility.

In addition, in the component (b), a polymer or copolymer containing a choline phosphate as a structural component (hereinafter referred to as a "phosphocholine polymer") includes, for example, a phosphocholine bond to methacrylic acid. Polymers of monomers, and copolymers that are further copolymerized with hydrophobic monomers.

Specific examples of the choline phosphate-based polymer include a 2-methacrylic acid oxyethylcholine alone polymer or 2-methacrylic acid Copolymer of oxyethylphosphocholine and hydrophobic monomer. In the case of a copolymer with a hydrophobic monomer, the type of the hydrophobic monomer is not particularly limited, but styrene, acrylate, and methacrylate are preferred. The molecular weight of the copolymer with the hydrophobic monomer is preferably 5,000 or more, and more preferably 10,000 or more. In addition, the molar ratio of the structure of 2-methacryloxyethyl phosphate choline to the hydrophobic monomer is preferably in a range of 50:50 to 97: 3.

Among the commercially available products of these phosphate choline-based polymers, Lipidure-HM, Lipidure-HM-500, and Lipidure-HM-600 are mentioned as individual polymers of 2-methacryloxyethyl phosphate choline. (Both made by Nippon Oil Co., Ltd.), and Lipidure-PMB, Lipidure A, Lipidure C, Lipidure NA, Lipidure-, which are copolymers of 2-methacryloxyethyl phosphate choline and butyl methacrylate. NR (both made by Nippon Oil Corporation) and the like. Among them, the copolymer of 2-methacryloxyethylphosphocholine and butyl methacrylate has moderate skin adhesion and hydrophilicity, and it is suitable for the uniformity of cosmetic films and the ease of shedding with warm water. Better.

Examples of amino acids in the component (b) include theanine, glycine, alanine, valine, isoleucine, threonine, leucine, histamine, and tryptophan , Serine, threonine, aspartic acid, glutamic acid, asparagine, glutamine, lysine, hydroxylysine, hydroxyproline, arginine, cystine, hemi Cysteine, methionine, phenylalanine, tyrosine, proline, ornithine, citrulline, etc. Among them, theanine is better in terms of the uniformity of the cosmetic film and the ease of shedding with warm water.

In addition, the amidated amino acid in the component (b) refers to a hydrogen that constitutes an amine group or a hydroxyl group of an amino acid is replaced by a fluorenyl group. In the present invention, Middle refers to those containing its Al, Mg, Ca, Zn, Zr and Ti salts. In the present invention, an amino-substituted N-fluorenylamino acid is preferred.

Among the above fluorenylamino acids, the fluorenyl group for hydrogen substitution is preferably a fatty acid residue having 8 to 30 carbon atoms, and examples thereof include 2-ethylhexanoic acid residue, capric acid residue, and lauric acid residue. , Myristic acid residue, palmitic acid residue, stearic acid residue, malonic acid residue, isopalmitic acid residue, isostearic acid residue, oleic acid residue, linoleic acid residue, perilla Oleic acid residues, etc. On the other hand, examples of the substituted amino acid include those described above.

Examples of the fluorenated amino acid include N-fluorenylglutamic acid, N-fluorenyl lysine, N-fluorenylmethylglycine, N-fluorenylmethylalanine, or Al thereof. , Mg, Ca, Zn, Zr, and Ti salts, and the fluorenyl group includes residues of capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, isostearic acid, and the like.

Specific examples of the N-fluorenylamino acid of the component (b) include, for example, N-lauric acid glutamic acid, N-hexane glutamic acid, N-oleyl glutamic acid, and N-myristyl Glutamic acid, N-palmit glutamic acid, N-stearyl glutamic acid, N-lauric acid lysine, N-hexane lysine, N-oleyl lysine, N-meat Myrtle lysine, N-palm lysine, N-stearyl lysine and the like. Among these N-fluorenylamino acids, N-fluorenylglutamic acid is also preferred in terms of the uniformity of the cosmetic film and the ease of exfoliation with warm water, and especially N-stearylglutamic acid. , Its Al, Mg, Ca, Zn, Zr and Ti salts are better.

In addition, the polyoxyethylene coconut oil fatty acid glyceride in the component (b) is an addition polymerization reaction of coconut fatty acid glyceride with ethylene oxide. should. Specific examples include coconut oil fatty acid PEG-7 glyceride, PEG-30 glyceryl coconut ester, PEG-40 glyceryl coconut ester, and PEG-78 glyceryl coconut acid with INCI names (International Nomenclature Cosmetic Ingredient Labeling names). Esters, PEG-80 glyceryl coconut esters, and coconut fatty acid PEG-10-PPG-2 glycerides polymerized by addition of ethylene oxide and propylene oxide. Among these polyoxyethylene coconut oil fatty acid glycerides, it is preferable that the average degree of polymerization of ethylene oxide is 4 to 16 in terms of the uniformity of the cosmetic film and the ease of shedding with warm water.

These components (b) may be used singly or in combination of two or more kinds as required. In addition, although the content of the component (b) in the oil-in-water skin cosmetic is not particularly limited, it is preferably between 0.001 and 8%, and 0.01 to 5% in the extensibility and uniformity of the cosmetic film. , Long-lasting effect of makeup, easy to fall off with warm water, etc.

Moreover, although the said component (b) can be mix | blended with component (a) individually, since the powder of component (a) is surface-treated with component (b), the powder pair of component (a) can be provided. The adhesion of the skin and moderate hydrophilicity are better because the uniformity of the makeup film, the long-lasting effect of makeup, and the ease of shedding with warm water are better.

The method for surface-treating the component (a) with the component (b) is not particularly limited, and a known method can be used. A surface-treating agent and a surface can be added to a solvent (for example, water, alcohol, hydrocarbon, and mixtures thereof). After the treated powder particles are subjected to stirring treatment or ball milling treatment, they should be repeatedly washed, filtered, and removed impurities as needed, and then dried and pulverized to obtain surface-treated powder. In addition, in the manufacturing steps of cosmetics, The powder (a) and the component (b) are mixed for simple surface treatment, and even commercially available products that have been surface-treated in advance can be used.

In addition, if necessary, component (b) and components other than component (b) can also be used for the surface treatment of component (a). Examples of such components include coconut oil fatty acid PEG-7 glyceride. MONOSILIOL C (manufactured by EXSYMOL), a mixture with methylsilyl tri (coconut oil fatty acid PEG-8 glyceride), and dimethyl dipropenyl ammonium ‧ acrylamide copolymer (ME POLYMER 09W (Dongbang) Surface treatment of component (a) by Chemical Industry Co., Ltd. Alternatively, a method in which the surface of component (a) is treated with aluminum hydroxide or the like and then treated with component (b) may be mentioned.

In addition, as the polyvinyl alcohol used in the oil-in-water skin cosmetic ingredient (c) of the present invention, any polyvinyl alcohol can be used as long as it meets the specifications of the polyvinyl alcohol standard 2006 for quasi-drug raw materials. The INCI name includes polyvinyl alcohol, and commercially available PVA-205, PVA-217, KURARAY POVAL PVA124 (the above are manufactured by KURARAY), PVA-EG25, PVA-EG40, PVA-GL05S, PVA-EG05 ( The above is an example made by Nippon Synthetic Chemical Industry Co., Ltd.).

In addition, as the polyvinyl acetate in the component (c), as long as any one of the polyvinyl acetate, polyvinyl acetate liquid, and polyvinyl acetate emulsion specifications conforms to the quasi-drug raw material specification 2006, there is no particular limitation on any of them. be usable. Examples of the INCI name include polyvinyl acetate.

As the polyvinyl acetate, it is possible to use a dispersion of the polyvinyl acetate. Polymer emulsion in an aqueous solvent. Commercially available products of this polymer emulsion include, for example, VINYBLAN GV-5651 (vinyl acetate polymer, 35% solids emulsion, manufactured by Nissin Chemical Industry Co., Ltd.) and the like. The polymer emulsion of vinyl acetate used in the present invention uses water as a medium and preferably has a solid content concentration of 30 to 60%.

These components (c) may be used singly or in combination of two or more kinds as required. In addition, although the content of the component (c) in the oil-in-water skin cosmetic is not particularly limited, it is solid in terms of smooth usability, formation of a uniform cosmetic film, ease of shedding with warm water, and long-lasting effects of makeup. The point conversion is preferably 0.05 ~ 5%, and more preferably 0.1 ~ 3%.

Moreover, as a polyhydric alcohol of the component (d) used for the oil-in-water skin cosmetics of this invention, ethylene glycol, propylene glycol, 1,3-propanediol, 1, 2- butanediol, and butylene glycol are mentioned, for example. , 1,3-butanediol, 2,3-butanediol, pentanediol, etc .; Glycerol, trimethylolpropane, 1,2,6-hexanetriol, etc .; Pentaerythritol Quaternary alcohols such as xylitol; pentanols such as xylitol; hexaols such as sorbitol and mannitol; polyglycol polymers such as diethylene glycol, dipropylene glycol, triethylene glycol, polypropylene glycol, and polyglycerol ; Glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol diethyl ether, ethylene glycol dibutyl ether and other glycol alkyl ethers; diethylene glycol monomethyl ether Diol alkyl ethers such as diethylene glycol monoethyl ether and diethylene glycol monobutyl ether; glycol ethers such as ethylene glycol monomethyl ether acetate and propylene glycol monomethyl ether acetate; Glyceryl monoalkyl ethers such as shark liver alcohol; sugar alcohols such as sorbitol, maltitol, maltotriose, mannitol, sucrose, erythritol, fructose, maltose, xylitol, amylolytic sugars, etc . Among these 1,3-butanediol and dipropylene glycol are preferred in terms of smooth and tender touch and uniformity of the cosmetic film.

These components (d) may be used singly or in combination of two or more. In addition, although the content of the component (d) in the oil-in-water skin cosmetic is not particularly limited, it forms a soft and uniform makeup film while forming a high makeup long-lasting effect, excellent affinity to the skin, and using warm water From the viewpoint of easy exfoliation, 1.5 to 35% is preferable, and 3 to 30% is more preferable.

The water of the component (e) used in the oil-in-water skin cosmetic of the present invention is a component constituting the outer phase of the oil-based emulsified cosmetic in the skin water of the present invention. As the component (e), in addition to purified water, when using a polymer emulsion as the component (c), water and aloe, Witch Hazel, and Hamamelis that constitute the liquid can also be used. , Cucumber, lemon, lavender, rose and other plant extracts.

Although the compounding amount of the component (e) used in the oil-in-water skin cosmetic of the present invention is not particularly limited, it is preferably 15 to 75%, and more preferably 20 to 70%.

The polyol of the component (d) is preferably combined with the water of the component (e) within a certain range. That is, while forming a long-lasting makeup effect, excellent affinity to the skin, a soft and uniform makeup film, and excellent ease of shedding of warm water, the content of component (d) and component (e) The mass ratio is preferably 1: 5 ~ 1: 1.

In addition to the essential components described above, the present invention In accordance with requirements, a solid oil may be contained as component (f). By blending this ingredient (f), the makeup lasting effect and natural coverage effect are greatly improved.

As the solid oil of the component (f), in addition to the component (b), an oily component which is solid at 25 ° C can be used without limitation. Examples of the component (f) include refined hydrocarbons such as refined wax, polyethylene wax, Fischer-Tropsch wax, paraffin wax, microcrystalline wax, natural wax, and ethylene-propylene copolymer; oils and fats such as wood wax; and water Waxes such as wax, carnauba wax, candelilla wax, whale wax, montan wax, etc .; Cholesterol fatty acid esters, N-lauric acid-L-glutamic acid di (cholesteryl, 222, octyl 12 Base) and other amino acid oils; fatty acids such as stearic acid, lauric acid, myristic acid, and behenic acid; higher alcohols such as stearyl alcohol, cetyl alcohol, lauryl alcohol, and eicosanediol Class; silicone oils such as silicone wax; pentaerythritol abietic acid, 12-hydroxystearic acid, palmitic acid dextrin, palmitic acid / 2-ethylhexanoic acid dextrin, stearic acid dextrin, sucrose stearate, Dextrin fatty acid esters such as sucrose palmitate, caprylic acid dextrin, palmitic acid / stearic acid dextrin, oleic acid dextrin, isopalmitic acid dextrin, isostearic acid dextrin; sucrose stearate, acetic acid Sucrose fatty acid esters of sucrose stearate; aluminum isostearate, calcium stearate and the like.

Among them, especially when solid oil having a melting point of 35 to 50 ° C. is used as the component (f), the stretching is smoother and the uniformity of the cosmetic film is improved, and the ease of falling off of warm water is also improved. Examples of such a solid oil include sucrose acetate stearate, and alkyl-modified polydimethylsiloxane as a silicone wax. In addition, as an example of a commercially available product of an alkyl-modified polydimethylsiloxane, BELSIL SDM 5055 VP (Asahi Kasei WACKER SILICONE Co., Ltd.), 2503 Cosmetic Wax (Dow Corning Toray).

These components (f) may be used singly or in combination of two or more. In addition, although the content of the component (f) in the oil-in-water skin cosmetic is not particularly limited, it is preferably 0.05 to 6%, and more preferably 0.1 to 2%. By adding the component (f) in this concentration range, it is possible to obtain a cosmetic that has a smooth feeling of use and good long-lasting makeup effect, and is easy to fall off with warm water.

In the oil-in-water skin cosmetic of the present invention, in addition to the main components (a) to (e) described above and the above-mentioned (f) component to be adjusted as required, the range can be adjusted within the range that does not hinder the effect of the present invention. Oily ingredients, surfactants, water-based ingredients, UV absorbers, humectants, antioxidants, beauty ingredients, preservatives, pigments, perfumes, and other ingredients can be adjusted into general cosmetics.

As the oily component, as long as it is other than the components (b) and (f) used in the present invention, it is liquid at 25 ° C, and liquid oils for general cosmetics can be used without limitation. Regardless of the origin of this oily ingredient, such as animal oil, vegetable oil, synthetic oil, etc., oils such as hydrocarbons, oils and fats, ester oils, higher alcohols, silicone oils, fluorine-based oils, and lanolin derivatives Agent. Specific examples include hydrocarbons such as liquid paraffin, heavy liquid isoparaffin, α-olefin oligomers, squalane, polyisobutylene, and polybutene; olive oil, castor oil, and Australian walnut oil. Oils and fats; jojoba oil, diisobutyl adipate, 2-hexyldecyl adipate, di-2-heptylundecyl adipate, alkyl glycol monoisostearate Isostearate Ester, trimethylolpropane triisostearate, ethylene glycol di-2-ethylhexanoate, cetyl 2-ethylhexanoate, neopentyl glycol di-2-ethylhexanoate, Tri-2-ethylhexanoate, trimethylolpropane, tetra-2-ethylhexanoate pentaerythritol, 2-ethylhexanoate, oleic acid oleate, octyldodecyl oleate, decyl oleate Ester, neopentyl glycol didecanoate, triethyl citrate, 2-ethylhexyl succinate, isohexadecyl stearate, butyl stearate, diisopropyl sebacate, sebacic acid Di-2-ethylhexyl ester, hexadecyl lactate, myristyl lactate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-hexyldecyl palmitate, 2-heptyl palmitate Monoester, dipentaerythritol fatty acid ester, isononyl isononanoate, isotridecyl isononanoate, isopropyl myristate, isopropyl palmitate, 2-octyldodecyl myristate, nutmeg 2-hexyldecanoate, myristyl myristate, hexadecyl dimethyl octanoate, ethyl laurate, hexyl laurate, N-lauric acid-L-glutamate-2-octyldodecyl , Diisooctadecyl malate, glyceryl triisocaprylate, glyceryl triisostearate, Diglyceryl isostearate, diglyceryl triisostearate, diglyceryl tetraisostearate, decaglyceryl decaisostearate, glyceryl triisopalmitate, glyceryl trimyristate, meat Ester esters of diglyceryl isostearate, tris (tridecyl trimelate), etc .; N-lauric acid-L-glutamic acid bis (phytosterols 2-octyldodecyl), etc. Amino acid-based oils; fatty acids such as isostearic acid and oleic acid; higher alcohols such as oleyl alcohol and isostearyl alcohol; dimethyl polysiloxane, methyl benzene polysiloxane, ten Silicone oils such as methylcyclopentasiloxane, octamethylcyclotetrasiloxane, and fluorine-modified polysiloxane; fluorine-based oils such as perfluoropolyether; lanolin, lanolin acetate, and lanolin fatty acids Lanolin derivatives such as propyl ester and lanolin alcohol may be used alone or in combination of two or more.

In addition, as the surfactant, as long as it is a surfactant other than the component (b) and is commonly used in cosmetics, it does not matter whether it is a nonionic surfactant, an anionic surfactant, a cationic surfactant, an amphoteric surfactant, etc. Can be used.

Examples of the nonionic surfactant include glycerol fatty acid esters and alkanediol adducts thereof, polyglycerol fatty acid esters and alkanediol adducts thereof, and propylene glycol fatty acid esters and alkanediol adducts thereof. Products, sorbitan fatty acid esters and their alkanediol adducts, sorbitol fatty acid esters and their alkanediol adducts, polyalkylene glycol fatty acid esters, sucrose fatty acid esters, polyoxyethylene Alkyl alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene hydrogenated castor oil, alkanediol adduct of lanolin, polyoxyalkylene alkyl co-modified polysiloxane, polyether modification Polysiloxane and so on.

Examples of the anionic surfactant include fatty acid inorganic and organic salts such as stearic acid and lauric acid, alkylbenzene sulfates, alkylsulfonates, α-olefin sulfonates, and dialkylsulfosuccinic acids. Acid salt, α-sulfonated fatty acid salt, N-methyl-N-alkyl taurine salt, polyoxyethylene alkyl ether sulfate, polyoxyethylene alkylphenyl ether sulfate, alkyl phosphonate, polyoxylate Ethylene alkyl ether phosphonate, polyoxyethylene alkyl phenyl ether ether phosphonate, o-alkyl substituted malate, alkyl sulfosuccinate, and the like.

Examples of the cationic surfactant include alkylamine salts, polyamines and alkanolamine fatty acid derivatives, alkyl quaternary ammonium salts, and cyclic quaternary ammonium salts. Examples of the amphoteric surfactant include amino acids. Examples of the carboxylic acid type, the sulfate type, the sulfonic acid type, and the phosphate type of the beta-type and betaine-type are N, N-dimethyl-N-alkyl-N-carboxymethylammonium betaine, N, N-dialkylamine Alkylene carboxylic acid, N, N, N-trialkyl-N-sulfoalkylene ammonium betaine, N, N-dialkyl-N, N-bis (polyoxyethylene sulfate) ammonium betaine, 2-alkyl-1-hydroxyethyl-1-carboxymethylimidazoline betaine and the like.

In addition, as an aqueous component, other than a component (d) and a component (e) can be used. Examples of the aqueous component include alcohols such as ethanol, and xanthan gum, guar gum, sodium chondroitin sodium sulfate, sodium hyaluronate, acacia gum, sodium alginate, and carrageenan, which are water-soluble polymers. Natural people; semi-synthetics of methyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, etc .; carboxyvinyl polymers, alkyl addition carboxyvinyl polymers, polyvinylpyrrolidone, sodium polyacrylate, Synthetic systems such as sodium polyacrylate copolymer and polyacrylamide.

Examples of the ultraviolet absorber include salicylic acid based on trimethylcyclohexyl salicylate, octyl salicylate, and triethanolamine salicylate; p-aminobenzoic acid, ethyldihydroxypropyl p-aminobenzoic acid, and glycerol. PABA based on p-amino benzoic acid, octyl dimethyl p-amino benzoic acid, amyl p-dimethylamino benzoate, 2-ethylhexyl p-dimethylamino benzoate; 4- (2-β-glucopyranosylsilyloxy) propoxy-2-hydroxybenzophenone, dihydroxydimethoxybenzophenone, sodium dihydroxydimethoxybenzophenone 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-hydroxy-4 -N-octylbenzophenone and other benzophenones; ethylhexyl methoxycinnamate (alias: octyl p-methoxycinnamate), mono-2-ethylhexanoic acid Glyceride, methyl 2,5-diisopropylcinnamate, 2,4,6-tri [4- (2-ethylhexyloxycarbonyl) aniline] -1,3,5-triazine, trimethoxycinnamate methylbis (trimethylsiloxy) silyl Cinnamate based on amyl ester, isopropyl p-methoxycinnamic acid, diisopropyl cinnamate, p-methoxyhydrocinnamic acid diethanolamine salt, etc .; 2-benzene-benzimidazole-5-sulfuric acid, Benzomethane systems such as 4-isopropyldibenzomethane, 4-tert-butyl-4'-methoxydibenzomethane; 2-cyano-3,3-diphenylpropyl- 2-ethylhexyl 2-enoic acid (alias; oxaliline), dimethoxybenzylidene dioximidazole propionate 2-ethylhexyl propionate, 1- (3,4-dimethyl (Oxybenzene) -4,4-dimethyl-1,3-pentanedione, methoxylauryl ethyl, methyl-O-aminobenzoic acid, 2-ethylhexyl-2-cyano-3,3 -Diphenylacrylate, 3- (4-methylphenylene) camphor, octyltriazinone, 4- (3,4-dimethoxybenzylidene) -2,5-dioxy-1 -2-ethylhexyl imidazolyl propionate, and these polymer derivatives and silane derivatives, etc., one or two or more of these can be used depending on the purpose.

Examples of moisturizers include urea, hyaluronic acid, chondroitin sulfate, and pyrrolidone carboxylate. Examples of preservatives and antibacterial agents include parabens, benzoic acid, sodium benzoate, and sorbic acid. , Calcium sorbate, phenoxyethanol, salicylic acid, pectic carbonic acid, sorbic acid, p-chloro-cresol, hexachlorophenol, alzacil, lochsidine chloride, trichlorosymmetric diphenylurea, photosensitizing dye, Isopropylcresol and the like.

Examples of the antioxidant include vitamin E, butyl hydroxyanisole, and dibutyl hydroxytoluene. Examples of the pH adjusting agent include lactic acid, lactate, citric acid, citrate, glycolic acid, and succinic acid. , Tartaric acid, malic acid, calcium carbonate, sodium bicarbonate, ammonium bicarbonate, etc .; as chelate Examples of the agent include sodium salt of ethylenediamine tetraacetate, sodium polyphosphate, sodium metaphosphate, phosphate, etidronate; and as a cooling agent, L-menthol, camphor, peppermint oil, peppermint oil, and ega Essential oils and the like; examples of the anti-inflammatory agent include allantoin, glycyrrhizinate, glycyrrhizin derivative, tranexamic acid, tincture and the like.

Examples of beauty ingredients include whitening agents such as arbutin, glutathione, and saxifraga extract; cell activators such as royal jelly, photosensitizing dyes, cholesterol derivatives, calf blood extract, and skin roughness improving agents ; Vanillyl nonanoate, benzyl nicotinate, β-butoxyethyl nicotinate, capsaicin, gingerone, cantharidin, fish petrolatum, caffeine, tannin, alpha-borneol, nicotinic vitamin E Blood circulation promoters such as inositol hexanicotinate, cyclomandelate, cinnarizine, torasulin, verapamil, pinasterin, γ-oryzanol; skin astringents such as tannic acid ; Sulfur, dimethylthioanthracene, etc.

Examples of vitamins include vitamin A oils such as vitamin A oil, retinol, retinol acetate, retinyl palmitate, and vitamin B ₂ such as riboflavin, riboflavin butyrate, and flavin adenosine. Class; Vitamin B ₆ such as pyridoxine hydrochloride, pyridoxyl dioctanoate; L-ascorbic acid, L-ascorbic acid dipalmitate, L-ascorbic acid-2-sodium sulfate, dl-α-vitamin EL-ascorbic acid Vitamin C such as phosphodiester dicalcium; Pantothenic acid such as calcium pantothenate, D-pantothenic alcohol, pantothenic acid ether, acetamyl pantothenic acid ether; Vitamin D such as ergocalciferol and bile calcium; niacin , Benzyl nicotinic acid, nicotinamide and other niacins; dl-α-tocopherol, acetic acid dl-α-tocopherol, niacin dl-α-tocopherol, succinic acid dl-α-tocopherol, etc. Vitamin E; Vitamin P, biotin, etc.

The method for producing an oil-in-water skin cosmetic according to the present invention is not particularly limited, and it can be produced in accordance with a general cosmetic production method. However, a better production method is disclosed as follows.

(1) A method of emulsifying the components (b) to (e) and other components according to their requirements to prepare an emulsion, and adding the powder of the component (a), mixing them, and adding other components if necessary.

(2) A manufacturing method of mixing component (a) and component (b) in advance, and then adding and emulsifying components (c) to (d) and other components according to their needs.

As the method of mixing the component (a) and the component (b) in the latter method (2), the component (b) is covered with the component (b) by using a method in which the component (b) is sufficiently covered on the surface of the component (a). Ingredient (a) is blended into a mixture of ingredients (c) to (d) to obtain an oil-in-water skin cosmetic material with better performance.

The oil-in-water skin cosmetic of the present invention obtained as described above can uniformly apply makeup to the entire face, and is suitable for foundations containing BB cream, concealer, makeup base, blush, eye shadow, sunscreen cosmetics, etc. Make-up cosmetics; skin care cosmetics such as lotions and creams. Among them, foundations, makeup bases, and sunscreen makeup suitable for the entire face are particularly preferred.

[Example]

The following examples are given to illustrate the present invention in detail, but these examples do not limit the present invention in any way.

Examples 1 to 9 and Comparative Examples 1 to 3

Oil-in-water skin cosmetics:

The oil-in-water emulsion cosmetic was prepared in accordance with the composition components shown in Table 1 below and the following production method. With regard to the obtained cosmetic materials, according to the evaluation method (1) described later, "watery stretchability", "uniformity of the cosmetic film", "dry finished product", "lasting effect of makeup", "easy to fall off with warm water" Degree "and other sensory evaluations. In addition, "in terms of the ease of falling off with warm water", in addition to the sensory evaluation, the physical evaluation was performed by the evaluation method (2). The results are shown in Table 1 together.

〔Composition〕

〔Production method〕

A. Mix ingredients 1 ~ 14 and 17.

B. Heat and mix the ingredients for 20 ~ 31 and keep it at 70 ℃.

C. Mix ingredients 15, 16, 18, 19, 32-36 and keep at 70 ° C.

D. Emulsify after adding B to C.

E. After cooling D to 40 ° C. and adding A, it is dispersed uniformly and filled into a container to obtain an oil-in-water skin cosmetic.

[Evaluation method (1) / sensory test]

Twenty members of the cosmetic evaluation expert group used the oil-in-water skin cosmetics of the foregoing examples and comparative examples on the entire face, and aimed at "watery stretchability", "uniformity of the cosmetic film", and "dry finished product" , "Long-lasting makeup effect" and "Easy peeling off with warm water" were evaluated on a 7-level basis according to the following criteria, and scored for each sample. Then, the average value of the whole group score was determined according to the following criteria. The "makeup lasting effect" is evaluated based on the makeup film 6 hours after application.

(Evaluation Benchmark 1)

Rating: Evaluation

6: Very good

5: Good

4: OK

3: Normal

2: Slightly worse

1: bad

0: Very bad

(Judgment Criteria 1)

Average score: Judgment

5.0 or more: ◎ (very good)

3.5 or more and less than 5.0: ○ (good)

2.0 or more and less than 3.5: △ (normal)

Under 2.0: × (bad)

[Evaluation Method (2) / Physical Test]

Regarding the ease of falling off with warm water, in addition to the sensory evaluation, a physical test was performed using an easily washable test apparatus shown in FIG. 1 as the evaluation method 2.

As shown in FIG. 1, the used device is composed of a rotary wiper member 2, a support base 6, a motor 7, a holder 9, and a balancer 8. Two of them are shown in FIG. 2, and the rotating plate 11 on which the wiper blade 12 is installed is fixed on the rotating shaft 10, and the 10 can be rotated by 7. Furthermore, as shown in FIG. 3, the test sample 5 is coated with a coating sample 14 on the test sample base cloth 13, and the 5 is held in warm water 3, and is rubbed 5 by rotating 12 provided above it. 14 from above.

The test using this device was performed in the following manner. First, artificial leather (IDEATEX JAPAN (stock), product number PB213001, color BK (black)) was used as the test sample base cloth 13, and a coating sample 14 of 1 mg / cm ^{2 was} evenly coated on the base cloth. After being left for 3 hours, A test sample 5 is formed. After that, the test sample 5 is put into 35-40 ° C. warm water 3 in the warm water container 4.

Next, the same artificial leather as the wiper sheet 12 is mounted on the rotary plate 11 to form a rotary wiper member 2, and the rotary wiper member 2 is installed as shown in FIG. 1, and a balancer 8 is used. Make its front end weight zero. Then put a weight of 500g again to increase the force on the rotating rubbing member 2 (assuming the load on the skin of the woman when washing her face), and rotate it 10 times at 20 rpm to rub it. Using a color difference meter (Nihon Denshoku Kogyo Co., Ltd., spectrocolor meter SE2000) to measure the respective brightness values of the test sample (blank) sample coating site after coating for 3 hours and the test sample sample coating site after rubbing. The ease of washing was evaluated from the difference by the following criteria.

(Judgment Criteria 2)

Difference of lightness value (△ L): Evaluation

15 or more: ◎ Shedding very well

10 or more to less than 15: ○ falls off well

5 or more to less than 10: △ slightly residual

0 or more to less than 5: × cannot fall off

The results in Table 1 show that the oil-in-water emulsified cosmetic materials for skin of Examples 1 to 9 of the products according to the present invention were used in sensory tests. "", "Lasting effect of makeup", "easy to fall off with warm water" and other items are excellent in oil-in-water emulsified cosmetics. In addition, in the physical test related to the ease of falling off of warm water, the oil-in-water emulsified cosmetics for skin of Examples 1 to 9 also showed good results.

On the other hand, Comparative Example 1 not containing the component (b) had poor affinity to the skin, so it was very inferior in the uniformity of the cosmetic film and the long-lasting effect of the make-up, and was not easy to fall off with warm water. Furthermore, Comparative Example 2 containing no component (c) was very inferior in the ease of falling off with warm water because it could not form a warm water film, and the uniformity of the cosmetic film and the long-lasting effect of makeup were poor. In addition, Comparative Example 3, which does not contain component (d), formed a loose film and could not form a uniform film when forming a cosmetic film, and it quickly stopped fixing after the water evaporated, which was very poor in terms of watery stretchability.

Example 10

Oil-in-water base makeup:

＊ 6: KSP-100 (made by Shin-Etsu Chemical Industry Co., Ltd.)

(Production method)

A. Mix ingredients 1 ~ 12.

B. Heat and mix the ingredients 14-25, and keep it at 70 ° C.

C. Mix ingredients 13, 26 ~ 31 and keep at 70 ° C.

D. Emulsify after adding B to C.

E. After cooling D to 40 ° C. and adding A, disperse it evenly and fill the container to obtain a water-in-oil base makeup.

(result)

The oil-in-water base makeup of Example 10 can be stretched tenderly and form a smooth and uniform makeup film, which has excellent makeup long-lasting effect and excellent ease of shedding with warm water.

Example 11

Oil-in-water blush:

＊ 7: SH556FLUID (by Shin-Etsu Chemical Industry Co., Ltd.)

(Production method)

A. Mix ingredients 1 ~ 14.

B. Heat and mix the ingredients 16-28, and keep it at 70 ° C.

C. Mix ingredients 15, 29 ~ 32 and keep at 70 ° C.

D. Emulsify after adding B to C.

E. After cooling D to 40 ° C. and adding A, disperse it evenly and fill the container to obtain an oil-in-water blush.

(result)

The oil-in-water blush of Example 11 formed an excellent and uniform makeup film that can be tenderly stretched and dried. The blush has an excellent long-lasting makeup effect and is also easy to fall off with warm water.

Example 12

Oil-in-water concealer:

＊ 8: Lecithin CLO (manufactured by J-OILMILLS)

(Production method)

A. Mix ingredients 1 ~ 13.

B. Heat and mix the ingredients for 15-27, and keep it at 70 ° C.

C. Mix ingredients 14, 28 ~ 31 and keep at 70 ° C.

D. Emulsify after adding B to C.

E. After cooling D to 40 ° C. and adding A, disperse it evenly and fill it into a container to obtain an oil-in-water concealer.

(result)

The oil-in-water type concealer of Example 12 is excellent in watery stretchability, forming a smooth and uniform makeup film, etc., and also has a long-lasting makeup effect and an easy-to-fall off degree with warm water.

Example 13

Oil-in-water foundation:

＊ 9: SIMULGEL EG (SEPPIC)

(Production method)

A. Mix ingredients 1 ~ 13.

B. Heat and mix the ingredients for 15-28, and keep at 70 ° C.

C. Mix ingredients 14, 29 ~ 32 and keep at 70 ° C.

D. Emulsify after adding B to C.

E. After cooling D to 40 ° C. and adding A, disperse it uniformly and fill the container to obtain an oil-in-water foundation.

(result)

The oil-in-water foundation of Example 13 is excellent in water-like stretchability, uniformity of the makeup film, and the like, while being a dry finished product, it is also excellent in long-lasting makeup effect and easy to fall off with warm water.

[Industrial availability]

When the oil-in-water skin cosmetic of the present invention is applied to the skin alone, it not only has a moist feeling of use, but also forms a uniform cosmetic film with a natural covering effect, and exerts a dry finished product and excellent long-lasting makeup effects. In addition, this cosmetic film can be easily washed off with warm water and the like, and is a very excellent workability. Again. After applying this oil-in-water skin cosmetic material, when applying other cosmetic materials, while the makeup lasting effect of the cosmetic material is improved, the makeup films of other cosmetic materials used on the cosmetic film are also removed during makeup removal. Can be removed with warm water at the same time.

Therefore, the oil-in-water skin cosmetic of the present invention is an article having a very high usability and usability, and can be expected to be advantageously used in the field of cosmetics.

Claims (4)

An oil-in-water emulsified cosmetic for skin, characterized in that it is easily washable, and contains the following components (a) to (e): (a) powder, (b) lecithin, and structural components containing choline phosphate Polymers or copolymers, selected from the group consisting of amino acids, fluorinated amino acids, and polyoxyethylene coconut oil fatty acid glycerides, (c) from the group consisting of polyvinyl acetate and polyvinyl alcohol The selected film-forming agent, (d) a polyol, and (e) water. For example, the oil-based emulsified cosmetic material for skin water in claim 1, wherein the mass ratio of the content of the polyol of the component (d) to the water of the component (e) is 1: 5 to 1: 1. The oil-in-water emulsified cosmetic for skin according to claim 1 or 2, further comprising a solid oil as component (f). For example, the oil-in-water emulsified cosmetic for skin of claim 3, wherein the melting point of the solid oil of the aforementioned component (f) is 30-50 ° C.