JP2019099485A - Oil-in-water type emulsion cosmetic - Google Patents

Abstract

To provide an oil-in-water type emulsion cosmetic which suppresses the generation of color unevenness (no color) during production and has excellent storage stability.SOLUTION: There is provided an oil-in-water type emulsion cosmetic which comprises the following components (A), (B), (C) and (D): (A) 1 to 25 mass% of a hydrophobized coloring pigment, (B) 2 to 40 mass% of a silicone oil, (C) 1 to 20 mass% of octyl para-methoxycinnamate, (D) 0.2 to 15 mass% of an ester oil having an IOB value of 0.10 to 0.38 other than the component (C), in which the mass ratio (B)/(C) of the component (B) to the component (C) is 1 or more.SELECTED DRAWING: None

Description

  The present invention relates to an oil-in-water emulsion cosmetic.

Oil-in-water emulsified cosmetics are widely used because they have excellent fresh feel and feeling in use.
For example, Patent Document 1 discloses a water-soluble polysaccharide derivative, a specific fluorine-modified silicone, a powder treated with tridecafluorooctyl triethoxysilane, and an oil-in-water emulsified cosmetic containing fine particle zinc oxide. It is described that while maintaining sebum resistance, the feeling of bulkiness of the finished skin is suppressed, and a smooth and moist feeling can be obtained on the finished skin.

JP, 2015-44759, A

  The inventors of the present invention have found a problem that the oil-in-water type emulsified cosmetic containing the hydrophobized color pigment and octyl paramethoxycinnamate has a lack of color at the time of production and is inferior in storage stability.

  The present inventor manufactured by blending a specific ester oil and a silicone oil in a specific ratio to a hydrophobized color pigment and an oil-in-water emulsified cosmetic containing octyl paramethoxycinnamate. It has been found that the generation of no color at the time is suppressed, and the emulsion state and the oil phase stability of the pigment are excellent.

The present invention provides the following components (A), (B), (C) and (D):
(A) 1 to 25% by mass of hydrophobized color pigment,
(B) 2 to 40% by mass of silicone oil,
(C) 1 to 20% by mass of octyl paramethoxycinnamate,
Ester oil with an IOB value of 0.10 to 0.38 excluding 0.2% to 15% by mass other than the component (D)
And the mass ratio (B) / (C) of the component (B) to the component (C) is 1 or more.

The oil-in-water emulsion cosmetic of the present invention is excellent in storage stability because generation of no color at the time of production is suppressed. Moreover, uniform finish is obtained.
"No color" means that the oil phase moves up from the emulsion and the color appears to cry. Specifically, it refers to a state in which the oil phase oozes out and spot-like color unevenness with a light and dark appearance can be seen.
When the oil droplets coalesce and the emulsified particles become large, the color loss becomes worse, and the spotty color unevenness with shades is noticeable, and the appearance looks dirty.

Component (A) used in the present invention is a hydrophobized color pigment.
The coloring pigment is used in ordinary cosmetics, for example, titanium oxide, zinc oxide, cerium oxide, aluminum oxide, yellow iron oxide, black iron oxide, bengara, bitumen, ultramarine blue, chromium oxide, chromium hydroxide, etc. Metal oxides such as manganese violet and cobalt titanate, and further inorganic pigments such as carbon black; Red No. 3, Red No. 104, Red No. 106, Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red 205 Red 220, Red 226, Red 227, Red 228, Red 230, Red 401, Red 405, Red 505, Orange 203, Orange 204, Orange 205, Yellow 4, Yellow 4, Synthetic organic pigments such as Yellow No. 5, Yellow No. 401, Blue No. 1, Blue No. 404, etc .; Natural organic dyes such as β-carotene, caramel, paprika dyes etc. may be mentioned. Complexes of these coloring pigments, such as composite pigments that combine with the coloring pigments and pearl pigments. Examples of pearl pigments to be treated include mica, phlogopite, talc, silica, sericite, mica, glass, kaolin, bismuth oxychloride, cerium oxide, calcium sulfate, barium sulfate, magnesium sulfate, plate-like alumina powder, etc. Natural or synthetic inorganic powders may be mentioned. Specific examples of the composite pigment include titanium oxide coated mica, iron oxide coated mica, iron oxide coated mica titanium, iron oxide coated synthetic phlogopite, chromium oxide coated mica titanium, titanium oxide coated glass powder, iron oxide coated glass powder, oxidized metal powder Examples thereof include titanium-containing glass powder, iron oxide-containing glass powder and the like.
The coloring pigment of component (A) is preferably at least one or more selected from titanium oxide, yellow iron oxide, black iron oxide, and bengara, and includes at least titanium oxide, yellow iron oxide, black iron oxide, and bengara. Is more preferred.

The hydrophobic treatment of these color pigments includes, for example, fluorine compound treatment, silicone treatment, alkyl treatment, alkylsilane treatment, metal soap treatment, water soluble polymer treatment, amino acid treatment, amino acid treatment, acylated amino acid treatment, lecithin treatment, organic titanate The surface treatment such as treatment, polyol treatment, acrylic resin treatment, methacrylic resin treatment, urethane resin treatment, etc. may be mentioned. Among them, it is preferable to include one or more types of silicone treatment, alkylsilane treatment, amino acid treatment, and acylated amino acid treatment.
The hydrophobizing treatment is preferably at least one or more selected from silicone treatment, amino acid treatment, and acylated amino acid treatment from the viewpoint of excellent oil phase stability of the pigment, and it is preferred to include at least the acylated amino acid treatment preferable.
Examples of amino acids used to process color pigments include proline, hydroxyproline, alanine, glycine, sarcosine, lysine, aspartic acid, glutamic acid and the like, and salts thereof are included. The fatty acid constituting the acyl group of the acylated amino acid is preferably a fatty acid having 1 to 23 carbon atoms, more preferably a fatty acid having 8 to 20 carbon atoms, among which stearoyl glutamic acid, lauroyl aspartic acid, lysine dilauroyl glutamic acid, More preferred is lauroyl lysine. These salts include Na, Ca, Al, Mg, Zn, Zr, and Ti salts.
Specifically, from the viewpoint of the excellent oil phase stability of the pigment, those treated with stearoyl glutamic acid 2Na, lauroyl aspartic acid Na and the like are preferable, and among them, those treated with stearoyl glutamic acid 2Na are more preferable.

The hydrophobizing treatment of the color pigment can be carried out by a conventional method.
Component (A) is a combination of one or more selected from hydrophobized yellow iron oxide, hydrophobized black iron oxide, hydrophobized bengara and hydrophobized titanium oxide It is preferable to use one or more selected from acylated amino acid-treated yellow iron oxide, acylated amino acid-treated black iron oxide, and acylated amino acid-treated bengara and one or more species selected from acylated amino acid-treated oxide. More preferably, titanium is used in combination.

  The component (A) can be used alone or in combination of two or more, and the content is 1% by mass or more in the oil-in-water emulsion cosmetic, from the viewpoint of finishing the skin with a clean makeup effect. Preferably, 3% by mass or more is more preferable, 4% by mass or more is more preferable, 25% by mass or less is preferable, 20% by mass or less is more preferable, and 15% by mass or less is more preferable. The content of the component (A) is preferably 1 to 25% by mass, more preferably 3 to 20% by mass, and still more preferably 4 to 15% by mass in the oil-in-water emulsion cosmetic.

The silicone oil of the component (B) is used in ordinary cosmetics, and may be either volatile silicone oil or non-volatile silicone oil, and is preferably liquid at 25 ° C. The liquid has fluidity, and includes cream and paste.
Volatile silicone oil is one having a flash point of 35 to 87 ° C.
Examples of volatile silicone oils include linear dimethylpolysiloxanes such as dimethylpolysiloxane (1cs), dimethylpolysiloxane (1.5cs) and dimethylpolysiloxane (2cs); methyltrimethicone, tris (trimethylsilyl) methylsilane, Branched siloxanes such as tetrakis (trimethylsilyl) silane; cyclic dimethylsiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and the like.
Among these, dimethylpolysiloxane (1cs), dimethylpolysiloxane (1.5cs), methyltrimethicone and decamethylcyclopentasiloxane are preferable, and decamethylcyclopentasiloxane is more preferable.

In the non-volatile silicone oil, non-volatile is one having a kinematic viscosity at 25 ° C. of 5 mm ² / s or more.
As the non-volatile silicone oil, for example, dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane; phenyl trimethicone, diphenylsiloxy phenyl trimethicone, trimethylsiloxyphenyl dimethicone, phenyl such as diphenyl dimethicone, trimethyl pentaphenyl trisiloxane, etc. Modified silicones include polyether-modified silicones, alkyl-modified silicones, higher fatty acid ester-modified silicones, higher alkoxy-modified silicones, fluorine-modified silicones, modified silicone oils such as cross-linked organopolysiloxanes, and the like.
Among these, diphenylsiloxyphenyl trimethicone is preferred.

Component (B) may be used alone or in combination of two or more, and preferably contains at least a volatile silicone oil.
The content of the component (B) is 2% by mass or more, preferably 3% by mass or more, in the oil-in-water emulsion cosmetic, from the viewpoint of stabilizing the component (C) in the oil phase of the oil-in-water emulsion. 4 mass% or more is more preferable, 40 mass% or less, 30 mass% or less is preferable, and 20 mass% or less is more preferable. Moreover, content of a component (B) is 2-40 mass% in an oil-in-water type emulsion cosmetic, 3-30 mass% is preferable, and 4-20 mass% is more preferable.

  The content of octyl paramethoxycinnamate of the component (C) is 1% by mass or more, preferably 3% by mass or more, and 4% by mass or more in the oil-in-water emulsion cosmetic, from the viewpoint of enhancing the ultraviolet ray preventing effect. Is more preferably 20% by mass or less, preferably 15% by mass or less, and more preferably 10% by mass or less. The content of the component (C) in the oil-in-water emulsion cosmetic composition is 1 to 20% by mass, preferably 3 to 15% by mass, and more preferably 4 to 10% by mass.

  In the present invention, the mass ratio (B) / (C) of the component (B) to the component (C) suppresses the occurrence of no color at the time of production and is excellent in the emulsion state and oil phase stability of the pigment. It is 1 or more, 1.2 or more is preferable, 1.4 or more is more preferable, 5 or less, 3 or less is preferable, and 2.2 or less is more preferable. Moreover, mass ratio (B) / (C) of the component (B) with respect to a component (C) is 1-5, 1.2-3 are preferable and 1.4-2.2 are more preferable.

The ester oil of component (D) is other than component (C) and has an IOB value of 0.10 to 0.38.
The IOB value is an abbreviation of Inorganic / Organic Balance (inorganicity / organicity ratio), which is a value representing the ratio of inorganicity value to organicity value, and serves as an index indicating the degree of polarity of the organic compound. It is. Specifically, the IOB value is expressed as IOB value = inorganic value / organic value. Here, for each of the “inorganic value” and the “organic value”, for example, the “organic value” is 20 for one carbon atom in the molecule, and the “inorganic value” is 100 for one hydroxyl group. Thus, "inorganic value" and "organic value" are set according to various atoms or functional groups, and "inorganic value" and "organic value" of all atoms and functional groups in the organic compound. The IOB value of the organic compound can be calculated (see, for example, Yoshida Koda, "Organic conceptual diagram-basis and application-" p. 11-17, Sankyo Publishing, 1984).

  As ester oil of component (D), for example, octyl palmitate (IOB = 0.13), cetyl 2-ethylhexanoate (IOB = 0.13), cetyl octanoate (IOB = 0.13), triisostearin Acid trimethylolpropane (IOB = 0.14), isotridecyl isononanoate (IOB = 0.15), propylene glycol diisostearate (IOB = 0.15), glycol distearate (IOB = 0.16), isopropyl myristate (IOB) IOB = 0.18), glyceryl triisostearate (IOB = 0.18), isononyl isononanoate (IOB = 0.20), trimethylolpropane triisostearate (IOB = 0.20), isononyl isononanoate (IOB = IOB) 0.20), isodecyl benzoate (IOB 0.23), neopentyl glycol dicaprylate (IOB = 0.25), neopentyl glycol dicaprate (IOB = 0.25), diisostearyl malate (IOB = 0.27), glyceryl diisostearate (IOB = 0.2) 0.29), trimethylolpropane triethylhexanoate (IOB = 0.31), trimethylolpropane trioctanoate (IOB = 0.31), tri (capryl capric acid) glyceryl (IOB = 0.32), dicapric acid Propylene glycol (IOB = 0.32), Di 2-ethylhexyl succinate (IOB = 0.32), Tetra (behenic acid / benzoic acid / ethylhexanoic acid) pentaeryslit (IOB = 0.35), trioctanoin (IOB = 0.35), pentaethyl tetraethylhexanoate Chill (IOB = 0.35), pentaerythritol tetraoctanoate (IOB = 0.35), pentaerythritol tetra (2-ethylhexanoate) (IOB = 0.35), glyceryl tri-2-ethylhexanoate (IOB = And ester oils such as 0.36).

  As component (D), one having an IOB value of 0.13 to 0.33 is preferable.

Component (D) can be used alone or in combination of two or more, and the content is controlled from the viewpoint that the occurrence of no color at the time of production is suppressed and the emulsion state and the oil phase stability of the pigment are excellent. It is 0.2 mass% or more in oil type emulsified cosmetics, 0.4 mass% or more is preferable, 1 mass% or more is more preferable, 15 mass% or less, 10 mass% or less is preferable, 5 mass% The following are more preferable. The content of the component (D) in the oil-in-water emulsion cosmetic is 0.2 to 15% by mass, preferably 0.4 to 10% by mass, and more preferably 1 to 5% by mass.
In addition, when using two or more ester oils contained in a component (D), the IOB value of those mixtures is shown by the weighted average value of each mixing ratio. Moreover, although the ester oil which is not contained in the IOB value prescribed | regulated by the component (D) can also be mix | blended as an arbitrary component, it does not include in the weighted average value of the IOB value at that time.

  In the present invention, the mass ratio (B) / (D) of the component (B) to the component (D) suppresses the generation of no color at the time of production and is excellent in the emulsion state and oil phase stability of the pigment. 0.5 or more is preferable, 1 or more is more preferable, 2 or more is further preferable, 30 or less is preferable, 15 or less is more preferable, and 9 or less is more preferable. Moreover, it is preferable that it is 0.5-30, as for mass ratio (B) / (D) of the component (B) with respect to a component (D), 1-15 are more preferable, and 2-9 are more preferable.

  In the present invention, the mass ratio (C) / (D) of the component (C) to the component (D) suppresses the occurrence of no color at the time of production and is excellent in the emulsion state and oil phase stability of the pigment. 0.3 or more is preferable, 0.5 or more is more preferable, 1 or more is further preferable, 20 or less is preferable, 10 or less is more preferable, and 5 or less is more preferable. Moreover, it is preferable that it is 0.3-20, as for mass ratio (C) / (D) of the component (C) with respect to a component (D), 0.5-10 are more preferable, and 1-5 are more preferable.

  The oil-in-water emulsion cosmetic of the present invention can further contain the organic silicone resin (E), and is excellent in the emulsified state and the oil phase stability of the pigment. As the organic silicone resin, any one can be used as long as it is usually used for cosmetics, and examples thereof include trimethylsiloxysilicate, fluorine-modified silicone resin and the like.

Among the components (E), the component (E-1) trimethylsiloxysilicate is not particularly limited as long as it is used for ordinary cosmetics, and is a compound having a crosslinked structure having a siloxane structure as a main skeleton, _{(CH 3) 3 SiO 1/2]} a [SiO 2] b (a is 1 to 3, b is 0.5 to 8) preferably represented by.
Component (E-1) Trimethylsiloxysilicic acid preferably has a mass average molecular weight of 1,000 to 10,000, more preferably 2,000 to 9,000, and even more preferably 3,000 to 6,000, from the viewpoint of feeling in use and cosmetic stability. . The properties may be any of liquid, gum, paste, solid and the like at 25 ° C., but solid is preferable from the viewpoint of the obtained cosmetic. In addition, from the viewpoint of compoundability, it is also possible to use a solution or dispersion diluted with a solvent, or a solution or dispersion obtained by mixing in advance. The solvent to be diluted or dispersed is preferably one or more selected from dimethylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and isododecane, and volatile dimethylpolysiloxane and decamethylcyclopentasiloxane are preferable. More preferable. In addition, volatility has a flash point of 35-87 degreeC.

  Commercial products of component (E-1) are those previously dissolved in a solvent, KF-7312J (50% solids decamethylcyclopentasiloxane solution), KF-9021 (50% decamethylcyclopentasiloxane solution) X21-5249 (50% decamethylcyclopentasiloxane solution) (above, Shin-Etsu Chemical Co., Ltd.), SS 4267 (35% dimethylpolysiloxane solution), SR 1000 (above, Momentive Performance Materials Japan LLC) , BY11-018 (30% cyclopentasiloxane solution) (manufactured by Toray Dow Corning Silicone Co., Ltd.), BELSIL TMS 803 (manufactured by Wacker Chemie AG), and the like can be used.

Among the components (E), as the component (E-2) fluorine-modified silicone resin, general formula (1)
R ¹ _a SiO _{(4-a) / 2} (1)
(Wherein, R ¹ represents a hydrocarbon group having 1 to 8 carbon atoms, a phenyl group, a hydroxyl group or a general formula -R ² -Rf (wherein R ² represents a divalent alkylene group having 2 to 6 carbon atoms, and Rf represents carbon And a perfluoroalkyl group having a number of 1 to 8), which is optionally selected from a hydroxyl group and a functional group essentially having the general formula -R ² -Rf, and a is an average number of 1.0 ≦ a ≦ 1. 8)
What has a structure represented by these is preferable.
The fluorine-modified silicone resin has a silanol group in the molecule from the viewpoint of adhesion to the skin and powder, and the proportion of OH groups in the silanol group is 0.1 to 5% by mass with respect to the resin mass Is preferable, and 0.5 to 5% by mass is more preferable.

Component (E-2) is preferably solid at 25 ° C., and from the viewpoint of compoundability, it is a solution or dispersion diluted with a solvent, or a solution or dispersion obtained by mixing in advance It is also possible to use it in the state. The solvent to be diluted or dispersed is preferably dissolved in cyclic silicone, dimethylpolysiloxane or the like. The cyclic silicone is preferably used by being dissolved in one or more selected from octamethylcyclotetrasiloxane (D4) and decamethylcyclopentasiloxane (D5).
As such fluorine-modified silicone resin, INCI names "trifluoropropyldimethyl / trimethylsiloxysilicate" XS66-B8226, XS66-C1191, XS66-B8636 (above, Momentive Performance Materials) Commercial products, such as company-made) can be used.

Component (E) preferably contains (E-1) trimethylsiloxysilicate from the viewpoint of the emulsion state and the oil phase stability of the pigment.
The organic silicone resin of the component (E) can be used alone or in combination of two or more, and the content is in the oil-in-water type emulsified cosmetic from the viewpoint of excellent emulsion state and oil phase stability of the pigment. 0.01 mass% or more is preferable, 0.03 mass% or more is more preferable, 0.05 mass% or more is more preferable, 5 mass% or less is preferable, 2 mass% or less is more preferable, 0.5 mass% or less Is more preferred. Further, the content of the component (E) is preferably 0.01 to 5% by mass, more preferably 0.03 to 2% by mass, and 0.05 to 0.5% by mass in the oil-in-water emulsion cosmetic. More preferable.

The oil-in-water emulsion cosmetic obtained by the present invention may further contain any powder other than the component (A).
If it is a powder normally used for cosmetics as arbitrary powder, it will be spherical, plate shape, shape of needle shape etc., particle shape such as fumes, fine particles, pigment grade etc., porous, non-porous etc. It does not specifically limit by particle structure etc. It can use. Specifically, iron oxide, iron hydroxide, iron titanate, yellow iron oxide, black iron oxide, carbon black, bitumen, ultramarine blue, manganese violet, cobalt violet, chromium oxide, chromium hydroxide, cobalt oxide, cobalt titanate, etc. Colored pigments of: titanium oxide, zinc oxide, zirconium oxide, magnesium oxide, cerium oxide, aluminum oxide, barium sulfate, calcium sulfate, magnesium sulfate, magnesium carbonate, calcium carbonate, talc, mica, kaolin, sericite, silicic acid, Silica, aluminum silicate, magnesium silicate, aluminum magnesium silicate, calcium silicate, barium silicate, strontium silicate, tungstate metal salt, hydroxyapatite, vermiculite, bentonite, montmorillonite, hek White or body pigments such as light, smectite, zeolite, ceramic powder, dibasic calcium phosphate, alumina, silica, aluminum hydroxide, boron nitride, synthetic sericite, etc .; titanium oxide coated mica (titanium mica), fish scale foil, bismuth oxychloride Titanium oxide coated bismuth oxychloride, titanium oxide coated talc, mica, titanium oxide coated plate-like silica, hollow plate-like titanium oxide, iron oxide-coated mica, plate-like iron oxide (MIO), aluminum flakes, stainless steel flakes, titanium oxide coated Pearl pigments (glowing powder) such as plate-like alumina, pearl shell, gold foil, gold-deposited resin film, metal-deposited resin film, etc .; polymethylsilsesquioxane, silicone resin powder, nylon powder, silk powder, urethane powder, Organic powder such as cellulose powder Organic tar pigments such as red 104, red 102, red 226, red 201, red 202, yellow 4 and black 401, organic dyes and their laked compounds, A species or two or more species can be used.
These powders can be used as they are, or can be used after being subjected to hydrophobization treatment and hydrophilization treatment.

The oil-in-water emulsion cosmetic obtained by the present invention can further contain oil phase components other than the components (B), (C) and (D).
The oil phase component is not particularly limited as long as it is generally used for cosmetics, but an oil component liquid at 25 ° C. can be contained.
As an oil component liquid at 25 ° C., ester oils other than the components (B), (C) and (D), alcohol oils, ether oils, hydrocarbon oils, silicone oils and fluorine oils can be contained.

Further, the oil-in-water emulsion cosmetic of the present invention can further contain a nonionic surfactant, can be easily conformed to the skin, and can form a preparation such as an emulsion or a cream having an excellent feeling in use.
The nonionic surfactant is not particularly limited as long as it is used in ordinary cosmetics. For example, polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkyl ether, polyoxyethylene sorbitol fatty acid ester , Polyoxyethylene glycerin fatty acid ester, polyoxyethylene propylene glycol fatty acid ester, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor fatty acid ester, polyoxyethylene phytostanol ether, polyoxyethylene phytose Rose ether, polyoxyethylene cholestanol ether, polyoxyethylene cholesteryl ether, polyoxyalkylene modified organopolysiloxane, Polyoxyalkylene-alkyl co-modified organopolysiloxanes, and the like.
Among them, it is preferable to contain one or more kinds of polyoxyethylene sorbitan fatty acid ester and polyoxyethylene hydrogenated castor oil from the viewpoints of excellent emulsion stability, being easy to conform to the skin and being excellent in feeling in use.

The nonionic surfactant further preferably has an HLB of 9 or more and 19 or less, and more preferably 12 or more and 18 or less, from the viewpoint of emulsion stability.
Here, HLB (Hydrophilic-Lipophilic Balance>) indicates the molecular weight of the hydrophilic group portion in the total molecular weight of the surfactant, and for nonionic surfactants, Glyphin It is obtained by the equation of Griffin).
The HLB of a mixed surfactant composed of two or more nonionic surfactants can be determined as follows. The HLB of the mixed surfactant is obtained by phase averaging the HLB value of each nonionic surfactant based on the compounding ratio.

Mixed HLB = Σ (HLB ×× Wx) / ΣWx
HLBx shows the HLB value of nonionic surfactant X.
Wx shows the weight (g) of nonionic surfactant X which has a value of HLBx.

  The nonionic surfactant can be used alone or in combination of two or more, and the content is 0.1% by mass or more in the whole composition from the viewpoint that the content is easy to conform to the skin and the feeling in use is excellent. 0.3 mass% or more is more preferable, 0.5 mass% or more is more preferable, 5 mass% or less is preferable, 3 mass% or less is more preferable, and 2 mass% or less is more preferable. Moreover, 0.1-5 mass% is preferable in a whole composition, as for content of a nonionic surfactant, 0.3-3 mass% is more preferable, and 0.5-2 mass% is more preferable.

  In the present invention, the content of water is preferably 30% by mass or more, more preferably 40% by mass or more, still more preferably 45% by mass or more, and preferably 70% by mass or less in the oil-in-water emulsion cosmetic. % Or less is more preferable, and 60 mass% or less is more preferable. Moreover, in this invention, 30-70 mass% is preferable in an oil-in-water type emulsion cosmetic, as for content of water, 40-65 mass% is more preferable, and 45-60 mass% is more preferable.

  The oil-in-water emulsion cosmetic of the present invention is a component generally used for cosmetics other than the above components, for example, a semi-solid / solid oily component other than the above, a water-soluble polymer, an antioxidant, a fragrance, a pigment, Preservatives, thickeners, pH adjusters, blood circulation promoters, cooling agents, antiperspirants, bactericides, skin activators, moisturizers, refreshing agents and the like can be contained.

The oil-in-water type emulsified cosmetic of the present invention is prepared, for example, by mixing and stirring (A) hydrophobized color pigment and (B) silicone oil to prepare a slurry-like dispersion, and An oil phase component containing an octyl cinnamate, an ester oil having an IOB value of 0.1 to 0.38 other than the (D) component (C), and (E) an organic silicone resin is mixed, and an aqueous phase component is further added Preferably, they are produced by mixing
A slurry dispersion of components (A) and (B) may be prepared by stirring and mixing (A) hydrophobized color pigment and (B) silicone oil in a ball mill method. preferable.
Moreover, the slurry-like dispersion liquid of components (A) and (B) can also use the commercially available dispersion liquid by which component (A) was previously diluted with component (B).

When a powder other than the component (A) is blended in the oil-in-water emulsion cosmetic of the present invention, a slurry dispersion of the components (A) and (B) is prepared and then added to and mixed with the slurry dispersion. Preferably, it is prepared.
With regard to other optional components, oil-soluble ones can be blended in the oil phase and water-soluble ones in the water phase.

The oil-in-water emulsion cosmetic obtained by the present invention can be formulated into liquid, emulsion, paste, cream, gel and the like, and preferably emulsion and cream.
Further, the oil-in-water emulsion cosmetic obtained by the present invention is a base cosmetic, foundation, concealer; blusher, eyeshadow, mascara, eyeliner, eyebrow, overcoat agent, lipstick, and other makeup cosmetics; The composition can be applied as UV protection cosmetics such as milk and sun protection cream; skin care cosmetics such as skin care milk, skin care cream, BB cream and beauty liquid. Among them, makeup cosmetics are preferable, and a makeup base, liquid foundation and cream foundation are more preferable.
The oil-in-water emulsion cosmetic obtained by the present invention can be used also in the use of only a single product or in the layering of powder cosmetics such as liquid foundation and powder foundation / white powder.

Examples 1-9, Comparative Examples 1-2
An oil-in-water emulsion cosmetic (cosmetic base) having the composition shown in Table 1 is produced, and the appearance immediately after production is uncolored, 25 ° C. · emulsified state immediately after production and dispersed state of pigment, 45 ° C. · 1 week storage The subsequent state of emulsification and the state of dispersion of the pigment were evaluated. The results are shown in Table 1 together.

(Production method)
An oil phase component containing components (C), (D) and (E) is added to and mixed with a slurry-like dispersion obtained by stirring and mixing components (A) and (B), and then an aqueous phase component Were added and mixed with a disper, and then stirred with a homomixer to obtain an oil-in-water emulsified cosmetic.

(Evaluation method)
(1) No color of appearance just after production:
Colorlessness of the appearance of the oil-in-water emulsion cosmetic immediately after production was evaluated visually according to the following criteria.
3: There is no patchy pattern with a light and dark appearance.
2: A patchy pattern with some shades is seen in part of the appearance.
1; Spot-like pattern with gradation throughout the appearance is noticeable.

(2) 25 ° C · Emulsified state immediately after production:
The state of emulsification of the oil-in-water type emulsified cosmetic immediately after production at 25 ° C. was observed with a microscope (500 × and 2000 × magnification using a digital microscope VHX-900 manufactured by KEYENCE Corporation), and the state of emulsification was evaluated according to the following criteria.
4: The average emulsified particles are less than 3 μm.
3: The average emulsified particles are 3 μm or more and less than 5 μm.
2: The average emulsified particle size is 5 μm or more.
1; Emulsification failure has occurred.

(3) 25 ° C · Dispersion state of pigment immediately after production:
The dispersion state of the pigment when observing the oil-in-water type emulsified cosmetic immediately after production at 25 ° C. with a microscope (500 × and 2000 × magnification using a digital microscope VHX-900 manufactured by KEYENCE) is evaluated based on the following criteria did.
4; The pigment is properly contained in the oil droplets.
3; The pigment is substantially contained in oil droplets.
2: Some of the pigment leaks from the oil droplets.
1; The pigment is not contained in oil droplets.

(4) Emulsified state after storage at 45 ° C. for 1 week:
The following criteria for the state of emulsification of the oil-in-water emulsion cosmetic after storage at 45 ° C. for 1 week are observed with a microscope (500 × and 2000 × magnification with KEYENCE, digital microscope VHX-900): It evaluated by.
4: The average emulsified particles are less than 3 μm.
3: The average emulsified particles are 3 μm or more and less than 5 μm.
2: The average emulsified particle size is 5 μm or more.
1; Emulsification failure has occurred.

(5) Dispersion state of pigment after storage at 45 ° C. for 1 week:
The dispersion state of the pigment when observed with a microscope (500 × magnification and 2000 magnification using a digital microscope VHX-900 manufactured by KEYENCE) after storage for 1 week at 45 ° C. is as follows: It evaluated by the standard.
4; The pigment is properly contained in the oil droplets.
3; The pigment is substantially contained in oil droplets.
2: Some of the pigment leaks from the oil droplets.
1; The pigment is not contained in oil droplets.

Example 10
In the same manner as in Example 1, an oil-in-water emulsified cosmetic (cosmetic base) having the composition shown in Table 2 was produced.
The cosmetic obtained is excellent in the emulsified state immediately after production at 25 ° C. and the dispersed state of the pigment, the emulsified state after storage for one week at 45 ° C., and the dispersed state of the pigment, with no color loss of appearance immediately after production. is there.

Example 11
In the same manner as in Example 1, an oil-in-water emulsion cosmetic (liquid-type foundation) having the composition shown in Table 3 was produced.
The cosmetic obtained is excellent in the emulsified state immediately after production at 25 ° C. and the dispersed state of the pigment, the emulsified state after storage for one week at 45 ° C., and the dispersed state of the pigment, with no color loss of appearance immediately after production. is there.

Example 12
In the same manner as in Example 1, an oil-in-water emulsified cosmetic (liquid-type foundation) having the composition shown in Table 4 was produced.
The cosmetic obtained is excellent in the emulsified state immediately after production at 25 ° C. and the dispersed state of the pigment, the emulsified state after storage for one week at 45 ° C., and the dispersed state of the pigment, with no color loss of appearance immediately after production. is there.

Claims (7)

The following components (A), (B), (C) and (D):
(A) 1 to 25% by mass of hydrophobized color pigment,
(B) 2 to 40% by mass of silicone oil,
(C) 1 to 20% by mass of octyl paramethoxycinnamate,
Ester oil with an IOB value of 0.10 to 0.38 excluding 0.2% to 15% by mass other than the component (D)
The oil-in-water type emulsion cosmetic composition, wherein the mass ratio (B) / (C) of the component (B) to the component (C) is 1 or more.   The oil-in-water emulsified cosmetic according to claim 1, wherein the silicone oil of component (B) contains one or more cyclic silicone oils.   The oil-in-water emulsified cosmetic according to claim 1 or 2, wherein the mass ratio (C) / (D) of the component (C) to the component (D) is 0.3-20.   The oil-in-water type emulsified cosmetic according to any one of claims 1 to 3, wherein the mass ratio (B) / (D) of the component (B) to the component (D) is 0.5 to 30.   The oil-in-water emulsified cosmetic according to any one of claims 1 to 4, wherein the hydrophobization treatment of the component (A) comprises at least one or two or more selected from amino acid treatment and acylated amino acid treatment.   The oil-in-water emulsion cosmetic according to any one of claims 1 to 5, further comprising (E) an organic silicone resin in an amount of 0.01 to 5% by mass.   The oil-in-water type emulsion cosmetic according to claim 6, wherein the organosilicone resin of component (E) contains at least (E-1) trimethylsiloxysilicate.