JP5955048B2 - Water-in-oil emulsified cosmetic - Google Patents

Description

  The present invention relates to a water-in-oil emulsified cosmetic. More specifically, the oil has excellent curl-keeping power, good adhesion to the eyelashes, smoothness when applied, and no feeling of stickiness after drying. The present invention relates to a water-in-water emulsified cosmetic.

  Water-in-oil emulsions with an oil phase as the outer phase and an aqueous phase as the inner phase can effectively apply oil-soluble active ingredients, such as filming agents, to the eyelashes. Is widely used as a base for eyebrow cosmetics such as mascara.

  As a water-in-oil emulsified cosmetic based on a water-in-oil emulsion, those containing 20% by mass or more of an aqueous phase are conventionally known. For example, Patent Document 1 proposes a water-in-oil type mascara containing an organic silicone resin and a predetermined oil as a mascara that is excellent in water resistance and oil resistance and can be easily removed by cleansing. The amount of the aqueous phase is preferably 20.0 to 70.0% by weight.

  Further, for example, in Patent Document 2, from the viewpoint of feeling of use, a water-in-oil type emulsion composition having an increased internal water phase ratio is an ideal base, and a specific surfactant and silicone system are used. It has been proposed to achieve a high internal water phase by using a combination of activators.

  In general, by increasing the content of the aqueous phase in the water-in-oil emulsified cosmetic, an excellent feeling of use can be obtained, and at the same time, the viscosity of the composition is increased and a certain degree of adhesion to the eyelashes is obtained. Can be secured. However, when the blending amount of the aqueous phase increases, the eyelashes absorb more water and tend to extend to the original linear form, so that the curl keeping force tends to be insufficient.

  On the other hand, in order to improve usability, it is known to blend spherical powder into eyelash cosmetics (Patent Document 3). In Patent Document 3, spherical powders such as silicone resin powder and silicic acid anhydride are added to cosmetics for eyelashes containing a candelilla resin, a rosin acid derivative, and a titanium / titanium oxide sintered product having a specific blending ratio. It is described that compounding improves the extensibility.

  However, the influence of the spherical powder on the curl keeping force of the eyelashes and the adhesion of the cosmetic material to the eyelashes has not been studied so far.

  Thus, a water-in-oil emulsified cosmetic that is excellent in both curl-keeping power of the eyelashes and adhesion to the eyelashes, and also excellent in feeling of use (smoothness and non-stickiness) is still desired.

JP-A-9-124444 JP 2011-201824 A JP 2004-300092 A

  The present invention has been made in view of the above circumstances, and has improved curl keeping force and adhesion to eyelashes (stickiness) at the same time, and has excellent usability (smoothness, no stickiness). An object is to provide a water-in-water emulsified cosmetic.

  As a result of extensive research, the present inventor has reduced the amount of water contained in the water-in-oil emulsified cosmetic composition, while improving the curl keeping power and decreasing the viscosity of the composition, causing adhesion to eyelashes. We found that there is a tendency to get worse. Based on these findings, we further investigated the improvement of adhesion to eyelashes, and by using water in a specific range and blending a specific amount of spherical powder, we were able to improve usability such as non-stickiness and smoothness. It has been found that both the curl keeping force and adhesion can be improved at the same time without loss. Notably, to improve both the curl keeping power and adhesion by blending the spherical powder, even with a small amount of water that can improve the curl keeping power best, the adhesion is best improved. It is necessary to limit to a specific range that is not as large as possible. Similarly, if the amount of the spherical powder is too much or too little, the curl keeping force and adhesion cannot be improved. That is, it has been found that a water-in-oil emulsified cosmetic with excellent cosmetic effect durability and usability can be obtained only by controlling the blending amounts of both water and spherical powder, and the present invention has been completed. It was.

That is, the gist of the present invention is as follows.
(1) (a) Water: 5 to 15% by mass,
(B) Spherical powder: 7 to 13% by mass, and (c) Coating agent: 5 to 15% by mass,
Water-in-oil emulsified cosmetic containing
(2) The water-in-oil emulsified cosmetic of (1) substantially free of wax.
(3) The water-in-oil emulsified cosmetic of (1) or (2) having a viscosity of 15,000 to 40,000.
(4) The total blending amount of all powder components including the spherical powder is 20 to 50% by mass with respect to the total amount of the water-in-oil emulsified cosmetic, and the ratio of the spherical powder to the total powder components is 25 to 40. % (1)-(3) water-in-oil type emulsified cosmetics.
(5) Eyebrow cosmetics based on the water-in-oil emulsified cosmetics of (1) to (4).

  According to the water-in-oil emulsified cosmetic composition according to the present invention, the curl keeping power of the eyelashes is excellent, the adhesion at the time of application is good, and the feeling of use (smoothness, no stickiness) is also excellent. Yes.

  The water-in-oil emulsified cosmetic of the present invention is mainly characterized by blending (a) water, (b) spherical powder, and (c) a film agent at a specific ratio. Hereinafter, the present invention will be described in detail.

<(A) Water>
(A) The water used in the present invention may be of quality generally blended in cosmetics, and may be distilled water, ion-exchanged water, or purified water. . Water is blended in an amount ranging from 5 to 15% by mass, more preferably from 7 to 13% by mass, and even more preferably from 8 to 12% by mass, based on the total amount of the water-in-oil emulsified cosmetic. When less than 5% by mass or more than 15% by mass is blended, both the curl keeping force and the adhesiveness cannot be sufficiently improved even when the spherical powder is blended.

<(B) Spherical powder>
As the (b) spherical powder used in the present invention, any substantially spherical powder including true spheres and oblate spheres generally used in cosmetics can be used.
Preferred spherical powders include, for example, (dimethicone / vinyl dimethicone) cross-polymer, spherical silicone powder such as polymethylsilsesquioxane; spherical silica powder; spherical organic powder such as nylon, urethane, polymethyl methacrylate, polyethylene, or polypropylene. Resin powder etc. are mentioned.

  Commercially available spherical powder can be used. Commercially available spherical silicone powders include (dimethicone / vinyl dimethicone) cross-polymer spherical powders Trefil E-506S, Trefil E-508, 9701 Cosmetic Powder, EP-9215 Cosmetic Powder, EP-9261 TI Cosmetic Powder, EP -2933 AL Cosmetic Powder (above, manufactured by Toray Dow Corning Co., Ltd.), polymethylsilsesquioxane spherical powders TOSPEARL 120A, TOSPEARL 145A, TOSPEARL 2000B (above, manufactured by Momentive Performance Materials), etc. It is done.

Examples of the commercially available spherical silica powder include silica microbead P-1500 (manufactured by JGC Catalysts & Chemicals Co., Ltd.), Sunsphere L-51 (manufactured by Asahi Glass Co., Ltd.), and the like.
Examples of commercially available spherical organic resin powders include spherical PMMA powder particles (Microsphere M-100, M-330: manufactured by Matsumoto Yushi Seiyaku Co., Ltd.), spherical urethane particles (Plastic Powder D-400: manufactured by Toyo Pigment), and the like. Is mentioned.

  The average particle diameter of the spherical powder is in the range of 1 to 40 μm, particularly in the range of 3 to 20 μm, because excellent usability is obtained and the effect of improving curl keeping force and adhesion is excellent. preferable.

  The spherical powder is blended in an amount in the range of 7 to 13% by mass, more preferably 8 to 12% by mass, based on the total amount of the water-in-oil emulsified cosmetic. When the blending amount is less than 7% by mass or exceeding 13% by mass, both the curl keeping force and the adhesion tend to be impaired. In particular, when the amount exceeds 13% by mass, the smoothness when applied to the eyelashes tends to deteriorate.

<(C) Coating agent>
The (c) film agent used in the present invention is not particularly limited as long as the formed film can impart the curl keeping force of eyelashes and adjust the hair flow. For example, organic solvent-soluble polymer film agents such as nitrocellulose; alcohol-soluble polymer film agents such as ethyl cellulose, ethylhydroxyethyl cellulose, shellac; silicone resins (MQ resin, MDQ resin, etc.), and volatile properties such as silicone-treated pullulan Examples include silicone-soluble polymer coating agents. Particularly, volatile silicone-soluble polymer coating agents include trimethylsiloxysilicic acid, alkyl acrylate copolymer methylpolysiloxane, 3- [tris (trimethylsiloxane) silyl] propylcarbamic acid pullulan, highly polymerized dimethylsiloxane methyl ( Aminopropyl) siloxane copolymer is preferable, and trimethylsiloxysilicic acid is more preferably used from the viewpoint of stability and usability.

  A film agent is mix | blended in the quantity of the range of 5-15 mass% with respect to the whole quantity of the water-in-oil type emulsified cosmetics, More preferably, the range of 7-12 mass%. If it is less than 5% by mass, the curl keeping force tends to deteriorate. On the other hand, when it exceeds 15 mass%, stickiness derived from a film agent will occur.

<Non-spherical powder component>
The water-in-oil emulsified cosmetic of the present invention may contain a non-spherical powder component such as a plate that is usually used in cosmetics, in addition to the spherical powder (b). However, in the present invention, the powder component does not include a color material, a pigment, and a pearl agent. Non-spherical powder components include, for example, inorganic powders (for example, talc, kaolin, mica, sericite (sericite), muscovite, phlogopite, synthetic mica, red mica, biotite, permiculite, magnesium carbonate, calcium carbonate, Aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstate, magnesium, silica, zeolite, barium sulfate, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluorine apatite, hydroxyapatite, Ceramic powder, metal soap (eg, zinc myristate, calcium palmitate, aluminum stearate), boron nitride, etc .; Organic powder (eg, polyamide resin powder (nylon powder), polyethylene powder, polymethyl methacrylate powder , Polystyrene powder, copolymer resin powder of styrene and acrylic acid, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, etc.); or the surface of these particles with higher fatty acids, oils and fats, waxes, silicone compounds, hydrocarbons, Examples thereof include those hydrophobized with substances such as surfactants and dextrin fatty acid esters.

  When the non-spherical powder is included, the total blending amount of the spherical powder and the non-spherical powder (powder component total amount) is 20 to 50% by mass, preferably 25 to 35% with respect to the total amount of the water-in-oil emulsified cosmetic. The ratio of the spherical powder to the total amount of the powder component is 25 to 40%, more preferably 30 to 38%. When the total amount of the powder components is less than 20% by mass or more than 50% by mass, the curl keeping force and adhesion tend not to be sufficiently improved. In particular, when the total amount of the powder component is large, the water-in-oil emulsified cosmetic becomes powdery and has a tendency to have insufficient adhesion to eyelashes despite its high viscosity. Further, when the proportion of the spherical powder in the total amount of the powder component is less than 25% or more than 40%, the curl keeping force and the adhesion tend not to be sufficiently improved.

<Other ingredients that can be blended>
The water-in-oil emulsified cosmetic according to the present invention includes various components, such as oils and emulsifiers (activators), which are usually blended in the field of cosmetics and quasi-drugs, as long as the effects of the present invention are not impaired. ), Coloring materials, pigments, pearling agents, antioxidants, thickeners, stabilizers, preservatives, humectants, fragrances and the like can be appropriately blended as necessary.

  Oils include, for example, liquid oils such as avocado oil, camellia oil, macadamia nut oil, mink oil, olive oil, castor oil, jojoba oil, triglycerin, glycerin trioctanoate, liquid paraffin, squalane, paraffin, ceresin, squalene, etc. Higher fatty acids such as hydrogen, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, 12-hydroxystearic acid, isostearic acid, linoleic acid, linolenic acid, lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, Higher alcohols such as oleyl alcohol, monostearyl glycerol ether, monopalmityl glycerol ether, cholesterol, phytosterol, isostearyl alcohol, isononane Isononyl, isopropyl myristate, cetyl octanoate, octyldodecyl myristate, butyl stearate, decyl oleate, ethylene glycol dioctanoate, diisostearyl malate, trimethylolpropane trioctanoate, trimethylolpropane triisostearate, tetraoctanoic acid Ester oil such as pentaerythritol, glyceryl trioctanoate, glyceryl triisostearate, ethyl acetate, butyl acetate, amyl acetate, linear chain such as dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, diphenylsiloxyphenyltrimethicone Silicone oil, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, octamethylcyclotetrasilo Cyclic silicone oils such as acid and the like may be used alone or in combination. In the present invention, it is particularly preferable to use silicone oil.

  As the emulsifier, an emulsifier having an HLB of 7 or less that can be blended in a water-in-oil emulsion composition is preferably used. For example, sorbitan monolaurate, sorbitan monooleate, sorbitan monoisostearate, sorbitan tristearate, etc. Sorbitan fatty acid esters; glycerol fatty acid esters such as glycerol monostearate, glycerol monooleate, glycerol isostearate, diglycerol diisostearate, decaglyceryl pentaisostearate; POE (5), POE (7.5), Polyoxyethylene hydrogenated castor oil such as POE (10) hydrogenated castor oil; dipolyhydroxystearic acid ester: polyglyceryl-2 dipolyhydroxystearate (PGPH; manufactured by Cognis), PEG30 dipolyhydro High-molecular-weight lipophilic active agent such as cysteinate (Aracel P135; manufactured by Unikema); cetyl dimethicone copolyol (for example, ABIL EM90; manufactured by Goldschmidt), polyether-modified silicone (for example, KF6011, KF6015, KF351A, KF945A) , KF6017 (manufactured by Shin-Etsu Chemical Co., Ltd.), SH3771 (manufactured by Toray Dow Corning Silicone Co., Ltd.), cross-linked polyether-modified silicone (for example, “KSG” series; manufactured by Shin-Etsu Chemical Co., Ltd.) Examples include silicones; polyglycerin-based silicones such as polyglycerin-modified silicones and alkyl co-modified polyglycerin-modified silicones; and the like, and one kind or a combination of two or more kinds can be used.

  Examples of coloring materials, pigments, and pearling agents include inorganic white pigments (eg, titanium dioxide, zinc oxide, etc.); inorganic red pigments (eg, iron oxide (bengara), iron titanate, etc.); inorganic brown pigments (eg, γ-iron oxide, etc.); inorganic yellow pigments (eg, yellow iron oxide, ocher, etc.); inorganic black pigments (eg, black iron oxide, low-order titanium oxide, etc.); inorganic purple pigments (eg, manganese violet, Cobalt violet, etc.); inorganic green pigments (eg, chromium oxide, chromium hydroxide, cobalt titanate, etc.); inorganic blue pigments (eg, ultramarine blue, bitumen, etc.); pearl pigments (eg, 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 (eg a Minium powder, copper powder, etc.); organic pigments such as zirconium, barium or aluminum lake (for example, red 201, red 202, orange 203, orange 204, yellow 205, yellow 401, and blue 404) Organic pigments); natural pigments (for example, chlorophyll, β-carotene, etc.) and the like.

  On the other hand, since wax may impair the feeling of use of the water-in-oil emulsified cosmetic, it is preferable to substantially avoid blending. When blended, a small amount (10% by mass or less, more preferably 5% by mass or less) is preferable. ) Is preferable. The term “wax” as used herein refers to a solid or semi-solid fat at normal temperature, and is usually composed of a portion derived from a higher fatty acid having 18 to 34 carbon atoms and a portion derived from a higher fatty alcohol having 18 to 44 carbon atoms. It is an oil containing a carboxylic acid ester. Such waxes include, for example, beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, ibota wax, whale wax, montan wax, nuka wax, lanolin, kapok wax, owl, lanolin acetate, liquid lanolin, sugarcane wax, lanolin fatty acid isopropyl, Hexyl laurate, reduced lanolin, jojoba wax, hard lanolin, shellac wax, bees wax, microcrislin wax, paraffin wax, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, lanolin fatty acid polyethylene glycol, fatty acid chrylide, cured castor Examples include oil, petrolatum, POE hydrogenated lanolin alcohol ether, and the like.

<Viscosity of water-in-oil emulsified cosmetics>
The water-in-oil emulsified cosmetic of the present invention has a viscosity in the range of 15,000 to 40,000, more preferably in the range of 20,000 to 38,000. If the viscosity is lower than 15,000, the eyelashes tend to be poor. On the other hand, when the viscosity is higher than 40,000, the coating does not spread well and tends to lack smoothness.

<Method and application of water-in-oil emulsified cosmetics>
The water-in-oil emulsified cosmetic according to the present invention can be produced according to a method conventionally used for producing a water-in-oil emulsion. For example, (a) an aqueous phase component containing water and (b) an oil phase component containing spherical powder and (c) a coating agent are appropriately heated and dissolved separately, and these aqueous phase and oil phase are mixed. By emulsifying with a homomixer or the like, a water-in-oil emulsified cosmetic can be obtained.

  The water-in-oil emulsified cosmetic of the present invention is excellent in the eyelashes, curl-keeping power, and feeling of use, and therefore can be used as eyebrow cosmetics such as mascara, eyeliner, and eyebrow.

  EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated in more detail, this invention is not limited by these Examples. Unless otherwise specified, the blending amount indicates mass%.

  Prepare water-in-oil emulsified cosmetics (samples) according to the formulations shown in Tables 1 and 2 below. The viscosity, curl keeping power, adhesion (stickiness), no stickiness after drying, and smoothness are as follows. According to the evaluation method. The results are also shown in Table 1 and Table 2.

[Viscosity measurement test]
At 30 ° C., the viscosity of the sample was measured with a B-type viscometer.

[Usability test]
10 professional panels apply each sample to the eyelashes, the adhesion (stickiness) and smoothness when applying, the curl keeping force of the eyelashes after application, and the absence of stickiness after drying Evaluation was made according to the criteria.
A: 8-10 out of 10 professional panels were evaluated as good B: 5-7 out of 10 professional panels were evaluated as good C: 3-4 out of 10 professional panels were evaluated as good D: 0-2 out of 10 professional panelists rated it as good

In Table 2, “Comparative Example 3” in Table 1 has been rewritten so that the evaluation results can be easily compared.
Each powder component in Tables 1 and 2 is as follows.
1: TOSPEARL 2000B (Momotive Performance Materials)
2: Spherical silica P-1500 (manufactured by JGC Catalysts & Chemicals Co., Ltd.)
3: Microsphere M-330 (manufactured by Matsumoto Yushi Seiyaku Co., Ltd.)
4: PDM-5L (Topy Industries, Ltd.)
5: MFL-50SCA (Matsumoto Yushi Seiyaku Co., Ltd.)
6: The surface of talc JA68R (manufactured by Asada Flour Milling Co., Ltd.) coated with silicone resin

As shown in Table 1, when the amount of water is gradually reduced from 20% by mass to 3% by mass under the condition that the amount of the spherical powder is insufficient (1% by mass), the curl keeping force is improved. The tendency for the viscosity of a composition to reduce and the adhesiveness to eyelashes to become worse was confirmed (Comparative Examples 1-5).
Therefore, when the amount of spherical powder was increased in a composition containing water (water: 20% by mass) close to that of conventional eyebrow cosmetics, the curl-keeping power was improved only slightly and the adhesion to eyelashes was reduced. And the smoothness during application was impaired (Comparative Examples 6 and 7). Even if the coating agent was increased in place of the spherical powder for the purpose of improving the curl keeping force, the curl keeping force was only slightly increased, and the non-stickiness and smoothness were significantly deteriorated (Comparative Example). 8). In addition, in the composition of low moisture content (water: 3% by mass) with good curl keeping power, increasing the blending amount of the spherical powder not only improved the adhesion to eyelashes, but also impaired the curl keeping power. (Comparative Example 9).

On the other hand, as shown in Table 2, in a composition containing 10% by mass of water, by blending 10% by mass of spherical powder, compared to Comparative Example 3 containing only 1% by mass of spherical powder, the curl keep Both force and adhesion to eyelashes could be improved (Example 1). Moreover, even if the material of the spherical powder was changed, substantially the same effect was obtained (Examples 2 and 3).
On the other hand, when 10% by mass of non-spherical powder (synthetic phlogopite) was mixed in place of the spherical powder, the curl keeping force was improved, but the smoothness during application was impaired (Comparative Example 10).

  Furthermore, in the composition containing 10% by mass of water, when the blending amount of the spherical powder was changed, the curl keeping force was improved as the blending amount of the spherical powder was increased (Comparative Examples 3 and 11, Example 1) and constant. When the amount was exceeded, a tendency toward a gradual decrease was observed (Comparative Examples 12 and 13). Moreover, when the compounding quantity of spherical powder was increased too much, the smoothness in the case of application | coating reduced remarkably (Comparative Examples 12 and 13). Further, it was confirmed that the adhesion to the eyelashes was worse if the blending amount of the spherical powder was too little or too much (Comparative Examples 3, 12 to 13).

Claims (3)

(A) Water: 5 to 15% by mass,
(B) Spherical powder made of silica (excluding hollow and hydrophobized) : 7 to 13% by mass, and (c) coating agent: 5 to 15% by mass,
A water-in-oil emulsified cosmetic for eyebrows . The water-in-oil emulsified cosmetic for eyebrows according to claim 1, substantially free of wax. The total blending amount of all powder components including the spherical powder is 20 to 50% by mass with respect to the total amount of the water-in-oil emulsified cosmetic for eyebrows , and the proportion of the spherical powder in the total powder components is 25 to 40%. The water-in-oil emulsified cosmetic for eyebrows according to claim 1 or 2 .