CN115531248A - Oil-in-water type emulsified solid cosmetic - Google Patents

Abstract

[ problem ] to provide an oil-in-water emulsion solid cosmetic having excellent stability and usability. [ solving means ] the oil-in-water emulsified solid cosmetic according to the present invention comprises: the coloring material is prepared from (A) a copolymer of (meth) acrylic acid/alkyl (meth) acrylate/POE monoalkyl ether acrylate, (B) a hydrophilic surfactant, (C) a higher alcohol, and (D) a hydrophobized coloring material.

Description

Oil-in-water type emulsified solid cosmetic

Technical Field

The present invention relates to an oil-in-water type emulsified solid cosmetic. More specifically, the present invention relates to an oil-in-water type emulsified solid cosmetic which has a moisturizing feeling and a moisturizing effect of an oil-in-water type emulsion and which can realize easy dipping when a puff is used, such as a water-in-oil type solid emulsion containing wax.

Background

Conventional solid cosmetics such as foundation make-up are usually prepared as water-in-oil solid emulsions containing wax or the like in order to maintain their form. Water-in-oil type solid emulsion cosmetics are excellent in shape retention and dipping with an applicator such as a powder puff, but are poor in water-retaining effect and moist feeling during application, and are liable to cause thickening and stickiness peculiar to wax.

On the other hand, although oil-in-water emulsion cosmetics can provide a moist touch and have excellent moisturizing effects, there is still room for improvement in shape retention and dipping of a puff.

From such a viewpoint, attempts have been made to improve usability by blending a specific hydrophilic thickener in a specific content in an oil-in-water type solid cosmetic (patent document 1). In such cosmetics, the usability and the like have been successfully improved, but as the demands of consumers are increased, further improvements in the usability, the effect and the like have been desired. In particular, in conventional solid cosmetics, in order to assist the form retention and the dipping of a puff, a container is designed to satisfy the dipping of a puff by attaching a net-like net to a composition filled in a compact case, but it is desired to develop an oil-in-water type emulsified solid cosmetic which can achieve sufficient dipping and form retention without assembling a net.

Documents of the prior art

Patent document

Patent document 1: international patent application publication No. 2019/088056

Disclosure of Invention

Problems to be solved by the invention

As described above, in conventional water-in-oil emulsion solid cosmetics, it is required to achieve both good elongation at the time of application, good dipping at the time of use of a puff, a moist feeling after application, and high stability of the cosmetics.

Means for solving the problems

The present invention provides the following inventions.

[1] An oil-in-water emulsified solid cosmetic comprising:

(A) A copolymer of (meth) acrylic acid/alkyl (meth) acrylate/POE monoalkyl ether (meth) acrylate,

(B) Hydrophilic surfactant,

(C) A higher alcohol, and

(D) Hydrophobizing the coloring material.

[2] The cosmetic according to item [1], wherein the component (A) is selected from the group consisting of an acrylic acid (ester)/steareth-20 methacrylate copolymer, an acrylic acid (ester)/beheneth-25 methacrylate copolymer, an acrylic acid (ester)/steareth-20 methacrylate crosslinked polymer, and an acryloyldimethylammonium taurate/beheneth-25 methacrylate crosslinked polymer.

[3] The cosmetic according to [1] or [2], wherein the content of the component (A) is 0.01 to 3.0% by mass based on the total mass of the oil-in-water emulsified solid cosmetic.

[4] The cosmetic according to any one of [1] to [3], wherein the HLB value of the component (B) is 10 or more.

[5] The cosmetic according to any one of [1] to [4], wherein the component (B) is a nonionic hydrophilic surfactant.

[6] The cosmetic according to any one of [1] to [5], wherein the content of the component (B) is 0.1 to 20% by mass based on the total mass of the oil-in-water type emulsified solid cosmetic.

[7] The oil-in-water type emulsified solid cosmetic according to any one of [1] to [6], wherein the component (C) is an alcohol having 6 or more carbon atoms.

[8] The cosmetic according to any one of [1] to [7], wherein the content of the component (C) is 0.1 to 15% by mass based on the total mass of the oil-in-water type emulsified solid cosmetic.

[9] The cosmetic according to any one of [1] to [8], wherein the component (D) is a powdery pigment having a primary particle diameter of 0.1 μm or more.

[10] The cosmetic according to any one of [1] to [9], wherein the component (D) is blended in an oil phase of the cosmetic.

[11] The cosmetic according to any one of [1] to [10], wherein the content of the component (D) is 0.1 to 20% by mass based on the total mass of the oil-in-water type emulsified solid cosmetic.

[12] The cosmetic according to any one of [1] to [11], wherein a ratio [ A/(B + C) ] of the component (A) to a total of the component (B) and the component (C) is 0.01 to 0.1.

[13] The cosmetic according to any one of [1] to [12], wherein a ratio [ D/(B + C) ] of the component (D) to a total of the component (B) and the component (C) is 0.3 to 2.0.

[14] The cosmetic according to any one of [1] to [13], wherein the rheometer hardness γ measured at 37 ℃ with a needle having a diameter of 11.3mm under a condition of a needle insertion distance of 3mm is 30 to 150N.

ADVANTAGEOUS EFFECTS OF INVENTION

By the present invention, there are provided: a water-in-oil type emulsified solid cosmetic having both excellent usability and stability. More specifically, provided are: simultaneously, the cosmetic has good elongation when coated, good dipping when using a puff, good water-wet feeling after coating and high stability of the cosmetic. The cosmetic is also excellent in the sense of elasticity when dipped with a puff or a hand, and can realize a sense of use not obtained in conventional cosmetics.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail.

The oil-in-water type emulsified solid cosmetic product (hereinafter, may be simply referred to as "cosmetic product") according to the present invention contains, as essential components, (a) a specific acrylic copolymer, (B) a hydrophilic surfactant, (C) a higher alcohol, and (D) a hydrophobized coloring material.

[ specific acrylic copolymer ]

The cosmetic according to the present invention contains, as component (a), a (meth) acrylic acid/alkyl (meth) acrylate/POE monoalkylether acrylate copolymer. Hereinafter, this component may be simply referred to as component (a) or an acrylic copolymer.

The POE (meth) acrylate/alkyl (meth) acrylate copolymer used in the cosmetic composition according to the present invention means a copolymer of (meth) acrylic acid/alkyl (meth) acrylate/POE (meth) acrylate monoalkyl ether ester

(a1) Acrylic acid or methacrylic acid,

(a2) Alkyl acrylate or methacrylate, and

(a3) Esters of acrylic acid or methacrylic acid with polyoxyethylene alkyl ethers,

The copolymer of (1).

These are listed, for example, as ICID (International Cosmetic Ingredient Dictionary)

Acrylic acid (ester)/cetyl polyether-20 methacrylate copolymer,

Acrylic acid (ester)/steareth-20 methacrylate copolymer,

Acrylic acid (ester)/steareth-25 methacrylate copolymer,

Acrylic acid (ester)/steareth-50 methacrylate copolymer,

Acrylic/behenyl polyether-25 methacrylate copolymer,

Acrylic acid (ester)/steareth-20 methacrylate crosslinked polymer, ammonium acryloyldimethyltaurate/beheneth-25 methacrylate crosslinked polymer, and the like,

these are commercially available in the form of aqueous dispersions (polymer emulsions).

The component (A) in the cosmetic composition according to the present invention is preferably selected from the group consisting of

acrylic/Steareth-20 methacrylate copolymers (Aculyn 22 (trade name); dow Chemical Japan Limited),

(meth) acrylic acid/beheneth-25 methacrylate copolymer (Aculyn 28 (trade name); dow Chemical Japan Limited),

(meth) acrylic/steareth-20 methacrylate crosspolymer (Aculyn 88 (trade name); dow Chemical Japan Limited), and

acrylyldimethylammonium taurate/beheneth-25 methacrylate crosspolymer (Aristoflex HMB (trade name); manufactured by Clariant Production UK Ltd.).

Among them, acrylic acid (ester)/steareth-20 methacrylate copolymer or acrylic acid ester/beheneth-25 methacrylate copolymer is particularly preferable.

The aqueous dispersion of the acrylic copolymer is diluted with water or the like as necessary, and neutralized by adding an alkali agent to thicken the aqueous dispersion. The alkaline agent used for neutralizing the aqueous dispersion is not particularly limited, and inorganic bases such as sodium hydroxide and potassium hydroxide, and organic bases such as triethanolamine, isopropanolamine and basic amino acids can be used.

The amount of the component (a) to be blended in the cosmetic of the present invention is preferably 0.01 to 3.0% by mass, more preferably 0.05 to 2.0% by mass, even more preferably 0.1 to 1.4% by mass, and particularly preferably 0.3 to 1.0% by mass, based on the actual polymer component, based on the total mass of the cosmetic. (A) When the amount of the component is excessively small, emulsion stability may be difficult to obtain, and when the amount is excessively large, makeup removal may occur after application of the cosmetic, and therefore care must be taken.

[ hydrophilic surfactant ]

The hydrophilic surfactant (component (B)) that can be used in the oil-in-water type emulsion cosmetic of the present invention is at least 1 selected from a nonionic surfactant and an ionic (anionic, cationic, and amphoteric) surfactant. As the hydrophilic surfactant, a nonionic surfactant is preferably used. The HLB value of the hydrophilic surfactant to be used is preferably 10 or more.

The nonionic surfactant that can be used in the cosmetic of the present invention may be selected from, for example, polyethylene glycol fatty acid esters, polyoxyethylene fatty acid glycerides, polyoxyethylene methyl polysiloxane copolymers, fatty acid polyoxyethylene sorbitan esters, polyoxyethylene alkyl ethers, maltitol hydroxy aliphatic alkyl ethers, alkylated polysaccharides, alkyl glucosides, sucrose fatty acid esters, polyoxyethylene hydrogenated castor oil glycerides, polyoxyethylene sorbitol fatty acid esters, polyoxyethylene polyoxypropylene block copolymers, tetrapolyoxyethylene tetrapolyoxypropylene-ethylenediamine condensates, polyoxyethylene-beeswax lanolin derivatives, alkanolamides, polyoxyethylene-propylene glycol fatty acid esters, polyoxyethylene-alkylamines, polyoxyethylene-fatty acid amides, alkyl oxyethyldimethylamines, triolein phosphate esters, and the like. Among these nonionic surfactants, those having an HLB value of 10 or more are preferably used.

Preferable examples of the nonionic surfactant having an HLB value of 10 or more include

Polyethylene glycol monostearate (PEG-40 stearate, etc.),

Polyoxyethylene sorbitan monostearate (polysorbate-60, etc.), and

polyoxyethylene behenyl ether (beheneth-20), and the like, but is not limited thereto.

These nonionic surfactants may be used in 1 kind or 2 or more kinds. The HLB value of 2 or more nonionic surfactants may be calculated by weighted average of HLB values of the respective surfactants according to the amount of the surfactants to be blended, and may be 10 or more.

In the present invention, the hydrophilic surfactant may be an ionic surfactant. The ionic surfactant includes anionic surfactants, cationic surfactants, and amphoteric surfactants.

Examples of the anionic surfactant that can be used in the cosmetic of the present invention include, but are not particularly limited to, N-cocoyl glutamate, coco fatty acid methyl taurate, N-hexanoyl methyl taurate, N-lauroyl methyl taurate, N-myristoyl methyl taurate, N-palmitoyl methyl taurate, N-stearoyl methyl taurate, N-oleyl methyl taurate, N-cocoyl glutamate, N-lauroyl glutamate, N-myristoyl glutamate, N-palmitoyl glutamate, N-stearoyl glutamate, N-oleyl glutamate, lauryl phosphate, myristyl phosphate, palmityl phosphate, and stearyl phosphate. Preferable counter ions include sodium, potassium, triethanolamine, ammonium, and the like.

Examples of the cationic surfactant that can be used in the present invention include, but are not particularly limited to, lauryl trimethyl ammonium chloride, lauryl trimethyl ammonium bromide, myristyl trimethyl ammonium chloride, myristyl trimethyl ammonium bromide, cetyl trimethyl ammonium chloride, cetyl trimethyl ammonium bromide, stearyl trimethyl ammonium chloride, stearyl trimethyl ammonium bromide, behenyl trimethyl ammonium chloride, behenyl trimethyl ammonium bromide, cetyl trimethyl ammonium methanesulfonate, stearyl trimethyl ammonium methosulfate, myristyl dimethyl benzyl ammonium chloride, cetyl dimethyl benzyl ammonium chloride, stearyl dimethyl benzyl ammonium chloride, octyl dihydroxyethyl methyl ammonium chloride, 2-decyltetradecyl trimethyl ammonium chloride, 2-dodecylhexadecyl trimethyl ammonium chloride, stearyloxypropyl trimethyl ammonium chloride, and N- (2-hydroxy-3-stearyloxypropyl) -N, N-dimethyl ammonium bromide.

Examples of the amphoteric surfactant which can be used in the present invention include, but are not particularly limited to, imidazoline-based amphoteric surfactants such as 2-undecyl-N, N, N- (hydroxyethylcarboxymethyl) -2-imidazoline sodium and 2-cocoyl-2-imidazolium hydroxide-1-carboxyethoxy 2 sodium salt, betaine-based surfactants such as 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolium betaine, lauryldimethylaminoacetic acid betaine, alkyl betaine, amidobetaine and sulfobetaine, and cocamidopropyl betaine.

In the cosmetic of the present invention, the hydrophilic surfactant (B) may contain at least 1 kind selected from nonionic surfactants and ionic surfactants, or 2 or more kinds may be compounded in combination. For example, one of the preferred embodiments of the present invention is: contains at least 1 nonionic surfactant with HLB value of 10 or more and at least 1 selected from nonionic surfactant and ionic surfactant.

The amount of the hydrophilic surfactant (B) to be blended in the cosmetic of the present invention is preferably 0.1 to 20% by mass, more preferably 0.2 to 10% by mass, and particularly preferably 0.3 to 5% by mass, based on the total mass of the oil-in-water type emulsion cosmetic. (B) When the amount of the hydrophilic surfactant to be blended is too small or too large, sufficient emulsion stability may not be obtained.

[ higher alcohol ]

The higher alcohol ((C) component) that can be used in the cosmetic composition of the present invention is not particularly limited as long as it is a higher alcohol that can be used in the fields of cosmetics, pharmaceuticals, quasi drugs, and the like, and preferably an alcohol having 6 or more carbon atoms. The higher alcohol includes a linear or branched, saturated or unsaturated monohydric alcohol. Examples of the linear alcohol include saturated alcohols such as dodecanol (lauryl alcohol), tridecanol, tetradecanol (myristyl alcohol), pentadecanol, hexadecanol (cetyl alcohol), heptadecanol, octadecanol (stearyl alcohol), nonadecanol, eicosanol (arachidyl alcohol), heneicosanol, docosanol (behenyl alcohol), tricosanol, tetracosanol (pyrolyl alcohol), pentacosanol, hexacosanol (ceryl alcohol), oleyl alcohol, and cetostearyl alcohol, and unsaturated alcohols such as elaidyl alcohol. Examples of the branched alcohols include monostearyl glyceryl ether (batyl alcohol), 2-decyltetradecyl alcohol, lanolin alcohol, cholesterol, phytosterol, hexyldodecanol, isostearyl alcohol, and octyldodecanol. These higher alcohols may be used in combination of 2 or more. From the viewpoint of stability over time, the cosmetic of the present invention is preferably a saturated straight-chain monohydric alcohol, for example, behenyl alcohol (behenyl alcohol) or stearyl alcohol (stearyl alcohol), and further preferably a combination of these is used. Further, it is preferable to use a branched alcohol such as monostearyl glyceryl ether (batyl alcohol) in combination with the saturated linear monohydric alcohol or the combination thereof. Most preferred is a combination of behenyl alcohol (behenyl alcohol), stearyl alcohol (stearyl alcohol) and monostearyl glyceryl ether (batyl alcohol).

As the higher alcohol (C), alcohols having a melting point of 60 ℃ or higher, such as behenyl alcohol or stearyl alcohol, are preferably used. The cosmetic of the present invention may use 1 or 2 or more higher alcohols, and when a mixture of 2 or more higher alcohols is used, it is preferable to select a combination in which the melting point of the mixture is 60 ℃ or higher.

In the cosmetic composition of the present invention, the amount of the (C) higher alcohol is preferably 0.1 to 15% by mass, more preferably 1 to 12% by mass, and particularly preferably 3 to 10% by mass, based on the total mass of the oil-in-water type emulsion cosmetic composition. (C) When the amount of the higher alcohol to be blended is too small or too large, sufficient emulsion stability may not be obtained, and thus attention is required.

Such higher alcohols constitute a part of the oil component contained in the cosmetic of the present invention.

[ hydrophobization of coloring Material ]

The hydrophobized coloring material ((D) component) that can be used in the cosmetic of the present invention is a hydrophobized coloring pigment.

The coloring pigment may be arbitrarily selected from those used for general cosmetics. Examples thereof include

Inorganic pigments such as titanium oxide, iron oxides (yellow, black and red iron oxides), metal oxides such as zinc oxide, cerium oxide, aluminum oxide, chromium oxide and chromium hydroxide, metal complexes such as manganese violet and green spinel (cobalt titanate), and further carbon black;

organic pigments such as tar-based pigments and lake pigments; and

and natural pigments such as carmine.

The coloring pigment to be used may be selected according to the purpose, and an inorganic pigment having a strong skin-covering effect of the finished cosmetic is preferably used, and titanium oxide, iron oxide, or zinc oxide is more preferably used. These color pigments may be used in combination of 2 or more.

Various particle sizes are known as such a coloring pigment. The particle size of the coloring pigment can be selected according to the purpose, and is preferably 0.1 μm or more, more preferably 0.2 μm or more in primary particle size. Depending on the purpose, a fine-particle colored pigment having a small primary particle diameter may be used.

In the cosmetic composition according to the present invention, a hydrophobized colored pigment is used. By subjecting the coloring pigment to a hydrophobic treatment, the feeling of astringency which may occur when the cosmetic is used can be reduced, and the usability can be improved, and the makeup-retaining property after use can be improved. Such hydrophobization treatment may be selected from silicone treatment, fluorine treatment, fatty acid treatment, metal soap treatment, N-acyl amino acid treatment, and the like. Among these, silicone treatment, fluorine treatment, and N-acylamino acid treatment are preferable because of their sticky and glossy feel when used and their strong masking effect.

Specific examples of the silicone treatment include methylhydrogenpolysiloxane treatment, dimethylpolysiloxane treatment, and alkylalkoxysilane treatment. Examples of the alkylalkoxysilane used for the alkylalkoxysilane treatment include hexyltrimethoxysilane, hexyltriethoxysilane, octyltrimethoxysilane, and octyltriethoxysilane.

Specific examples of the fluorine treatment include a perfluoroalkyl phosphate treatment, a perfluoroalkyl alkoxysilane treatment, and the like.

Examples of the N-acylamino acid or a salt thereof used for the treatment of the N-acylamino acid include a compound in which an acyl group is condensed to an amino group of an amino acid or a salt thereof, and preferably a compound in which a saturated fatty acid having 12 to 20 carbon atoms is condensed or a salt thereof. The amino acid is preferably glutamic acid or aspartic acid. Examples of the N-acyl group include a stearyl group and a lauroyl group. The salt may be selected from alkali metal salts such as sodium and potassium, alkaline earth metal salts, and the like, and sodium salts are preferred. Specific examples thereof include disodium N-stearoylglutamate, sodium N-lauroylglutamate, and sodium lauroyl aspartate.

Examples of the fatty acid treatment include stearic acid treatment and myristic acid treatment, and examples of the N-acyl amino acid treatment include lauroyl lysine treatment, dilauroyl lysine glutamate treatment, stearoyl disodium glutamate treatment, and lauroyl sodium aspartate treatment.

In the cosmetic of the present invention, the amount of the hydrophobized coloring material (D) is preferably 0.1 to 20% by mass, more preferably 2 to 20% by mass, and particularly preferably 4 to 20% by mass, based on the total mass of the oil-in-water type emulsion cosmetic. (C) When the amount of the higher alcohol to be blended is too small or too large, sufficient emulsion stability may not be obtained, and thus attention is required.

In the cosmetic according to the present invention, the component (D) is preferably blended in an oil phase of an oil-in-water type emulsified solid cosmetic. The component (D) blended in the oil phase is subjected to a hydrophobic treatment, whereby the affinity of the component (D) with the oil phase is improved. In the cosmetic of the present invention, the hydrophobized coloring material may be kneaded with the oil component and then blended into the cosmetic, or may be dispersed in the oil phase by blending a dispersant as necessary.

[ oil-in-water type emulsified solid cosmetic ]

The oil-in-water type emulsified solid cosmetic composition of the present invention contains the above-mentioned components (A) to (D) as essential components. The component (B) and the component (C) may form an associated body having a lamellar liquid crystal structure together with water in the cosmetic. Further, it is considered that the gel structure of the associated body maintains a solid shape when it is left to stand, and when stress is applied by a puff or the like during use, the gel structure collapses and can be dipped by the puff or the like. Therefore, in order to achieve excellent usability, it is desirable to adjust the blending ratio of the component (B) and the component (C).

First, the ratio of the component (a) [ a/(B + C) ] to the total of the components (B) and (C) is preferably 0.01 to 0.1, more preferably 0.015 to 0.05. If the ratio is less than this, the hardness during molding can be maintained, but the water-wet feeling tends to disappear, the elasticity tends to decrease, and the powder puff is excessively dipped, so that the applicability of coating is poor. When the ratio is higher than this, although the feeling of wetness is easily felt and the elasticity is increased, it is difficult to maintain the shape retaining property when the puff is continuously used. The ratio of the component (D) to the total of the components (B) and (C) [ D/(B + C) ] is preferably 0.3 to 3.0, and more preferably 0.3 to 2.5. Below this ratio, the makeup color is poor; when the ratio is higher than this, the elasticity is lowered, and streaking is easily observed during coating. By setting such a blending ratio, excellent usability can be achieved while maintaining the water-moist feeling and moisture retention property of the oil-in-water type emulsified solid cosmetic.

In addition, the oil-in-water type emulsified solid cosmetic based on the present invention generally contains water and an oil component.

The water used in the cosmetic according to the present invention is not particularly limited, and may be purified water, ion-exchanged water, or the like. The amount of water blended is preferably 25 to 70% by mass, more preferably 30 to 60% by mass, and particularly preferably 30 to 50% by mass, based on the total mass of the oil-in-water type emulsion cosmetic. When the amount of water is outside the above range, the stability of the oil-in-water type emulsion cosmetic may be lowered, and the feeling of use may be lowered.

The oil component used in the cosmetic composition according to the present invention constitutes a part of the inner phase (oil phase) of the oil-in-water emulsion. (B) The component (a) constitutes an oil component, but other oil components may be combined. The oil component that can be combined with the cosmetic composition according to the present invention is not particularly limited, and may be selected from hydrocarbon oils, ester oils, silicone oils, fragrances, oil-soluble ultraviolet absorbers, and the like that are used in general cosmetic compositions.

Examples of the hydrocarbon oil include liquid paraffin, squalane, squalene, paraffin, isoparaffin, ceresin, isododecane, isohexadecane, ozokerite (Ozokerite), pristane, and vaseline.

<xnotran> , ( ) , , , / , , , ( ) , / , / /// /// , , , (/ / ) , , , , , , , , , , , , , , , , , , , , 12- , -2- , , N- , , , , -2- , , -2- , , -2- , </xnotran> Glycerol tri-2-ethylhexanoate, glycerol trioctanoate, glycerol triisopalmitate, cetyl 2-ethylhexanoate-2-ethylhexyl palmitate, glycerol trimyristate, glycerol tri-2-heptylundecanoate, methyl ricinoleate, oleyl oleate, acetoglyceride, 2-heptylundecylpalmitate, diisobutyl adipate, 2-octyldodecyl N-lauroyl-L-glutamate, di-2-heptylundecyladipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, 2-ethylhexyl succinate, triethyl citrate, and the like.

Examples of the silicone oil include chain polysiloxanes (e.g., dimethylpolysiloxane, methylphenylpolysiloxane, diphenylpolysiloxane, etc.), cyclic polysiloxanes (e.g., octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, decadimethylcyclohexasiloxane, etc.), silicone resins having a three-dimensional network structure, silicone rubbers, various modified polysiloxanes (e.g., amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, fluorine-modified polysiloxane, etc.), acrylic silicones, and the like.

Examples of the liquid oils and fats include linseed oil, camellia oil, macadamia nut oil, corn oil, mink oil, olive oil, avocado oil, camellia oil, castor oil, safflower oil, rapeseed oil, soybean oil, peanut oil, triglycerol, turtle oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, cottonseed oil, perilla oil, tea seed oil, torreya japonica oil, rice bran oil, paulownia oil, jatropha oil, jojoba oil, germ oil, and the like. Examples of the solid fat include cocoa butter, coconut oil, horse oil, hydrogenated coconut oil, palm oil, beef tallow, mutton fat, hydrogenated beef tallow, palm kernel oil, lard, beef bone oil, wood wax kernel oil, hardened oil, neatsfoot oil, jatropha wax, hydrogenated castor oil, and the like.

Examples of the perfume include natural perfumes derived from animals or plants, synthetic perfumes produced by chemical synthesis, and blended perfumes as a mixture thereof, and are not particularly limited. By blending a perfume, a cosmetic excellent in the persistence of fragrance can be obtained. <xnotran> , , , , , , , , , C6 ～ 20, (Ambrettolide), (Ambrettolide), , , , , (Aurantiol), , , , , , , , , , -3- , -3- , , , , , , , , , , , , , , , , , (Tonalide), (Tonalide), , , (bacdanol), , , , , , , , , , (Vertofix Couer), , , , , , P- -7- (Mayol), , , , β - , , , , , , , , , , , , , , , , , , </xnotran> <xnotran> , , , , , , , , , , , , , , , , , , , , , , , , , , , , (ziram oil), , , , , , , , , , , , , , , , , , , , , , , , , , , (Tagetes oil), , , , , , , , , , , , , , , , , , , . </xnotran>

Examples of the oil-soluble ultraviolet absorber include benzoic acid-based ultraviolet absorbers such as p-aminobenzoic acid (PABA), monoglyceride of p-aminobenzoic acid, ethyl N, N-dipropoxy-p-aminobenzoate, ethyl N, N-diethoxy-p-aminobenzoate, ethyl N, N-dimethyl-p-aminobenzoate, and butyl N, N-dimethyl-p-aminobenzoate; anthranilic acid-based ultraviolet absorbers such as N-acetylanthranilic acid Gao Mengzhi; salicylic acid-based ultraviolet absorbers such as amyl salicylate, menthyl salicylate, gao Mengzhi, octyl salicylate, phenyl salicylate, benzyl salicylate, p-isopropyl phenyl salicylate, and the like; cinnamic acid-based ultraviolet absorbers such as octyl cinnamate, ethyl-4-isopropyl cinnamate, methyl cinnamate-2,5-diisopropyl cinnamate, ethyl cinnamate-2,4-diisopropyl cinnamate, methyl cinnamate-2,4-diisopropyl cinnamate, propyl p-methoxycinnamate, isopropyl p-methoxycinnamate, isoamyl p-methoxycinnamate, octyl p-methoxycinnamate, 2-ethylhexyl p-methoxycinnamate, 2-ethoxyethyl p-methoxycinnamate, cyclohexyl p-methoxycinnamate, ethyl α -cyano- β -phenylcinnamate, 2-ethylhexyl α -cyano- β -phenylcinnamate, glycerol mono-2-ethylhexanoyl-di-p-methoxycinnamate, 3,4,5-trimethoxycinnamate 3-methyl-4- [ methyl bis (trimethoxy) silyl ] butyl ester; 2-phenyl-5-methylbenzoxazole, 2,2 '-hydroxy-5-methylphenyl benzotriazole, 2- (2' -hydroxy-5 '-tert-octylphenyl) benzotriazole, 2- (2' -hydroxy-5 '-methylphenyl benzotriazole, dibenzylhydrazine, dibenzoylmethane, 4-methoxy-4' -tert-butyldibenzoylmethane, 5- (3,3-dimethyl-2-norbornyl) -3-pentan-2-one, octocrylene, and the like.

The amount of the oil component to be blended in the cosmetic of the present invention is not particularly limited, but is preferably 5 to 50% by mass, more preferably 10 to 40% by mass, and still more preferably 15 to 40% by mass, based on the total mass of the cosmetic.

The oil component in the present invention preferably includes an oil component (liquid oil component) that is liquid at room temperature (25 ℃). On the other hand, a solid oil such as a jatropha wax may be blended, but the blending amount thereof is required to be within a range not to inhibit the effect of the present invention. For example, the amount of the solid oil (wax or the like) blended is usually less than 5.0% by mass, preferably 3.0% by mass or less, and more preferably 1.0% by mass or less, based on the total mass of the cosmetic. The cosmetics according to the present invention also include a wax-free form.

The cosmetic according to the present invention may contain other optional ingredients as necessary. Examples of such a component include

(a) Water-soluble ultraviolet absorbers (e.g., benzophenone-based ultraviolet absorbers such as 2,4-dihydroxybenzophenone, 2,2 '-dihydroxy-4-methoxybenzophenone, 2,2' -dihydroxy-4,4 '-dimethoxybenzophenone, 2,2',4,4 '-tetrahydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4' -methylbenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonate, 4-phenylbenzophenone, 2-ethylhexyl-4 '-phenyl-benzophenone-2-carboxylate, 2-hydroxy-4-n-octyloxybenzophenone, 4-hydroxy-3-carboxybenzophenone, benzimidazole-5-sulfonic acid and salts thereof, benzimidazole-tetrasulfonic acid and salts thereof, benzimidazole-based ultraviolet absorbers such as phenylene-bis-benzimidazole-tetrasulfonic acid and salts thereof, 3- (4' -methylbenzylidene) -d, l-d, 3-benzylidene-d, camphor, and urocanic acid ethyl ester);

(b) Humectants (e.g., 1,3-butanediol, polyethylene glycol, propylene glycol, dipropylene glycol, hexylene glycol, glycerin, diglycerin, xylitol, maltitol, maltose, D-mannitol, etc.);

(c) <xnotran> ( (D) , ), (, (, , , , (Sericite), , , , , , , , , , , , , , , , , , , (), , , , , (, , , ), , ; (, ( ), , , , , , , ), (, , ), (, ( ), ), (, γ - ), (, , ), (, , ), (, , ), (, , , </xnotran> Cobalt titanate, etc.), inorganic blue pigments (e.g., ultramarine blue, prussian blue, etc.), pearl pigments (e.g., titanium oxide-coated mica, titanium oxide-coated bismuth oxychloride, titanium oxide-coated talc, colored titanium oxide-coated mica, bismuth oxychloride, fish scale foil, etc.), metal powder pigments (e.g., aluminum powder, copper powder, etc.), organic pigments such as zirconium, barium, or aluminum lake (e.g., organic pigments such as red 201, red 202, red 204, red 205, red 220, red 226, red 228, red 405, orange 203, orange 204, yellow 205, yellow 401, and blue 404, organic pigments such as red 3, red 104, red 106, red 227, red 230, red 401, red 505, orange 205, yellow 4, yellow 5, yellow 202, yellow 203, green 3, and blue 1), natural pigments (e.g., chlorophyll, β -carotene, etc.);

(d) Hydrophilic thickeners (e.g., polysaccharides such as gellan gum, xanthan gum, agar, etc., copolymers containing 2-acrylamide-2-methylpropanesulfonic acid, dimethylacrylamide/sodium acryloyldimethyltaurate crosslinked polymers, hydroxyethyl acrylate/sodium acryloyldimethyltaurate copolymers, sodium acrylate/sodium acryloyldimethyltaurate copolymers, etc., synthetic high molecular weight compounds such as clay minerals, etc.);

(e) A lipophilic thickener;

(f) Lower alcohols (carbon number less than 6);

(g) Antioxidants (for example, tocopherols, dibutylhydroxytoluene, butylated hydroxyanisole, gallic acid esters, etc. examples of antioxidant aids include phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, cephalin, hexamethylphosphate, phytic acid, ethylenediaminetetraacetic acid, etc.);

preservatives (methyl paraben, ethyl paraben, butyl paraben, phenoxyethanol, and the like);

(h) Anti-inflammatory agents (e.g., glycyrrhizic acid derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, hinokitiol, zinc oxide, allantoin, etc.);

(i) Whitening agents (e.g., saxifrage extract, arbutin, tranexamic acid, potassium 4-methoxysalicylate, ascorbyl glucoside, niacinamide, etc.);

(j) Various extracts (e.g., phellodendron amurense, coptis chinensis, radix violae, peony, swertia, birch, sage, loquat, carrot, aloe, mallow, iris, grape, coix seed, luffa, lily, saffron, ligusticum wallichii, ginger, hypericum erectum, formononetin, garlic, capsicum, dried orange peel, angelica, seaweed, etc.);

activators (e.g., royal jelly, a photosensitizer, a cholesterol derivative, etc.);

(k) Blood circulation promoters (e.g., vanillyl nonanoate, benzyl nicotinate, β -butoxyethyl nicotinate, capsaicin, zingerone, cantharides tincture, ichthammol, tannic acid, α -borneol, tocopheryl nicotinate, inositol hexanicotinate, cyclamate, cinnarizine, tolazoline, acetylcholine, verapamil, cepharanthin, γ -oryzanol, etc.);

(l) Anti-lippage agents (e.g., sulfur, dithioanthracene, etc.);

(m) anti-inflammatory agents (e.g., tranexamic acid, thiotaurine, hypotaurine, etc.);

(N) oil-soluble coating forming agents (e.g., PVP-based coating agents such as PVP/dimethylaminoethyl methacrylic acid copolymer, PVP/eicosene copolymer, PVP/ethyl methacrylate/methacrylic acid copolymer, PVP/hexadecene copolymer, PVP/VA copolymer, PVP/vinyl acetate/itaconic acid copolymer, and styrene/PVP copolymer; acrylic acid-based coating agents such as ethyl acrylate/acrylic acid amide/acrylic acid copolymer, ethyl acrylate/butyl acrylate copolymer, ethyl acrylate/ethyl methacrylate copolymer, ethyl acrylate/methacrylic acid copolymer, ethyl acrylate/methyl methacrylate copolymer, octyl acrylate/vinyl acetate copolymer, octyl acrylate/styrene copolymer, butyl acrylate/vinyl acetate copolymer, butyl acrylate/hydroxy ethyl methacrylate copolymer, butyl acrylate/methyl methacrylate copolymer, methoxyethyl acrylate/hydroxy ethyl acrylate/butyl acrylate copolymer, lauryl acrylate/vinyl acetate copolymer, ethyl acrylate, polybutyl acrylate, polystyrene acrylic resin, vinyl acetate coating agents such as polyvinyl acetate, methacrylic coating agents such as polymethyl methacrylate, methyl methacrylate/butyl acrylate/caprylic acid, vinylpyrrolidone diethyl sulfate/N, N' -dimethylamino methacrylic acid copolymer, vinyl methyl ether-based coating agents such as vinyl methyl ether/ethyl maleate copolymer, vinyl methyl ether/butyl maleate copolymer, styrene/methyl benzene copolymer, vinyl methyl ether/butyl methacrylate copolymer, vinyl methyl acrylate copolymer, vinyl methyl ether/butyl methacrylate copolymer, etc Styrene-based coating agents such as ethylene/indene copolymers; alkyd resin-based coating agents such as cyclohexane-based alkyd resins; silicone resin-based coating agents such as trimethylsiloxy silicic acid);

(o) water-soluble film-forming agents (e.g., hydroxyethyl cellulose, polyvinyl alcohol, polyvinyl pyrrolidone, a vinyl pyrrolidone/vinyl acetate copolymer, polyethylene glycol, etc.); and

(p) amino acids or peptides (e.g., glutamic acid, glycine, serine, alanine, arginine, lysine, hydroxyproline, glycylglycine, and salts thereof)

And the like.

The cosmetic according to the present invention contains the above-mentioned ingredients, but the cosmetic is a shaped product. The form of the cosmetic according to the present invention is not particularly limited, and examples thereof include a base makeup, a foundation, a loose powder, a blush, a lipstick, a mascara, an eye shadow, and an eyeliner. In particular, a mode of storing the molded cosmetic in a compact case container is preferable. The water-in-oil type emulsified solid cosmetic based on the present invention has the following characteristics: it has appropriate hardness, and therefore is easily dipped with a puff or the like, and is easily uniformly spread when applied to the skin. More specifically, the cosmetic according to the present invention has a rheometer hardness γ of 30 to 150N, preferably 40 to 130N.

In the present invention, as for the rheometer hardness γ,

using a rheometer (available from Industrie Co., ltd.) for

Load weight: 2kg of

Diameter of the needle: 11.3mm phi

Needle insertion speed: 2 cm/min

The needle insertion distance: 3mm

Measuring temperature: 37 deg.C

The measured value obtained under the condition (1) is a value calculated by the following equation as the hardness γ.

γ＝(G*L)/(l*a)(dyn/cm ² )

(in the formula, wherein,

g: measurement of stress (gr). Times.980 dyn

L: thickness of sample (mm)

l: compression distance (mm)

a: cross-sectional area (cm) of the needle ² ))

The hardness varies depending on the measurement conditions, for example, the diameter of the needle. When the diameter of the needle is changed from the above condition to 8mm phi, the rheometer hardness of the cosmetic of the invention is preferably 30 to 100N.

The method for producing the oil-in-water type emulsified solid cosmetic of the present invention is not particularly limited, and any method can be employed. For example, the water-soluble coloring agent can be produced by separately preparing an oily component containing an oil component, a higher alcohol, a hydrophobized coloring material, and the like, and an aqueous component containing water, a specific copolymer, and the like, mixing them, and emulsifying them by a usual method.

The oil-in-water type emulsified solid cosmetic composition according to the present invention has excellent dipping and water-wet touch, excellent moisturizing effect, and the like, and can be provided in the form of a makeup cosmetic such as foundation, a UV care cosmetic such as sunscreen cream, or a skin care cosmetic.

[ examples ]

The present invention will be described in more detail with reference to examples, but the present invention is not limited thereto. Unless otherwise specified, the amount to be blended represents mass% with respect to the total mass of the cosmetic.

An oil-in-water type emulsion cosmetic having a composition shown in table 1 below was produced, and the following items were evaluated. The results are also shown in Table 1.

(1) Hardness of

24 hours after the preparation of the cosmetic, the hardness was measured by using a rheometer (manufactured by Rheotech) under conditions of a pressure-sensitive axis of 11.3. Phi., a needle insertion degree of 3mm, and a needle insertion speed of 20 mm/min.

(2) High temperature stability

The filled compact case was left standing at 45 ℃ for 2 weeks, and then properties of the cosmetic were visually confirmed, and evaluated under the following conditions.

Evaluation criteria

A: no dislocation of the surface was observed on the filled surface, and the initial state was maintained.

B: a small amount of surface dislocation was observed at the filled surface.

C: dislocation of the filling surface was observed

D: the filled surface was not retained and dislocation was observed.

(3) Dipping of powder puff, (4) feeling of moistening with water, (5) degree of unevenness of streaks in coating, and (6) feeling of elasticity

The manufactured cosmetics (samples) were actually used by 3 professional panelists, and each performance was evaluated at 4 stages.

(3) Dipping of the powder puff,

A: proper amount of dipping on the powder puff.

B: the dip on the puff is slightly more (slightly less).

C: dipping on powder puff

D: too much (too little) dipping on the powder puff

(4) Moist feeling in water,

A: fully feel the moist feeling

B: feel moist feeling of water

C: hardly feel moist feeling

D: the feeling of wetness was not felt.

(5) Degree of streaking in coating

A: the coating is free from stripe unevenness and can be applied uniformly. B: the coating is easy to be evenly coated without uneven stripes. C: a small amount of streaking unevenness occurred in the coating, and D was not easily applied uniformly: streaking occurs during coating, and uniform application is difficult.

(6) Sense of elasticity

A: fully feel the sense of elasticity

B: and the elasticity is sensed.

C: the sense of elasticity is less felt.

D: the feeling of elasticity is not felt.

[ Table 1]

[ formulation examples ]

Examples of formulations of other cosmetics according to the present invention are shown below. Cosmetics based on these formulations also have excellent properties based on the present invention.

[ Table 2]

Claims (14)

1. An oil-in-water emulsified solid cosmetic comprising:

(A) (meth) acrylic acid/alkyl (meth) acrylate/POE (meth) acrylate monoalkylether ester copolymer,

(B) A hydrophilic surfactant,

(C) Higher alcohol, and

(D) Hydrophobizing the coloring material.

2. The cosmetic according to claim 1, wherein the component (A) is selected from the group consisting of an acrylic acid (ester)/steareth-20 methacrylate copolymer, an acrylic acid (ester)/beheneth-25 methacrylate copolymer, an acrylic acid (ester)/steareth-20 methacrylate crosslinked polymer and an acryloyldimethyltaurate/beheneth-25 methacrylate crosslinked polymer.

3. The cosmetic according to claim 1 or 2, wherein the content of the component (a) is 0.01 to 3.0% by mass based on the total mass of the oil-in-water emulsified solid cosmetic.

4. The cosmetic according to any one of claims 1 to 3, wherein the HLB value of the component (B) is 10 or more.

5. The cosmetic according to any one of claims 1 to 4, wherein the component (B) is a nonionic hydrophilic surfactant.

6. The cosmetic according to any one of claims 1 to 5, wherein the content of the component (B) is 0.1 to 20% by mass based on the total mass of the oil-in-water emulsified solid cosmetic.

7. The oil-in-water type emulsified solid cosmetic according to any one of claims 1 to 6, wherein the component (C) is an alcohol having 6 or more carbon atoms.

8. The cosmetic according to any one of claims 1 to 7, wherein the content of the component (C) is 0.1 to 15% by mass based on the total mass of the oil-in-water emulsified solid cosmetic.

9. The cosmetic according to any one of claims 1 to 8, wherein the component (D) is a powdery pigment having a primary particle diameter of 0.1 μm or more.

10. The cosmetic according to any one of claims 1 to 9, wherein the component (D) is blended in an oil phase of the cosmetic.

11. The cosmetic according to any one of claims 1 to 10, wherein the content of the component (D) is 0.1 to 20% by mass based on the total mass of the oil-in-water emulsified solid cosmetic.

12. The cosmetic according to any one of claims 1 to 11, wherein the ratio of the (a) component [ a/(B + C) ] is 0.01 to 0.1 with respect to the total of the (B) component and the (C) component.

13. The cosmetic according to any one of claims 1 to 12, wherein a ratio [ D/(B + C) ] of the (D) component with respect to a total of the (B) component and the (C) component is 0.3 to 2.0.

14. The cosmetic according to any one of claims 1 to 13, wherein the rheometer hardness γ measured at a needle penetration distance of 3mm using a 11.3mm Φ needle at 37 ℃ is 30 to 150N.