JP2009242269A - Oil-in-water type emulsion cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oil-in-water type emulsion cosmetic which has a moisturizing and smoothly spreading feel of use and yet gives an excellent feel of an unpainted skin. <P>SOLUTION: The oil-in-water type emulsion cosmetic includes (a) a high viscosity oil having a dynamic viscosity of 10,000 to 300,000 mm<SP>2</SP>/s at 40°C, (b) a surfactant liquid at 25°C, and (c) 0.5-10 mass% of a glittering powder. The component (a) accounts for ≥50 mass% of the oily components. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention is a high viscosity oil kinematic viscosity at 40 ° C. is not more than 10000 mm ² / s or more 300000mm ² / s, the surfactant is a liquid at 25 ° C., relates the oil-in-water emulsion cosmetic containing the bright powder In more detail, the present invention relates to an oil-in-water emulsified cosmetic that can provide a cosmetic film that is not only fresh and smooth, but also has a particularly excellent skin feeling.

Cosmetics are used by blending various components depending on the purpose. In recent years, air conditioners such as air conditioners have been widely used in living environments, and the number of people living in dry environments throughout the year is increasing. Therefore, many cosmetics that moisturize have been studied. For example, the moisturizing effect on the skin is examined by blending petrolatum or solid oil or blending a water-soluble polymer as a film forming component.
As described above, various ingredients can be blended in cosmetics. Among them, oil-in-water emulsified cosmetics can contain an oily component and an aqueous component, and have a high possibility of expanding sensory quality. Many studies have been made. For example, volatile silicone oil gives a refreshing feel, triglycerin fatty acid ester improves skin familiarity, liquid paraffin improves emollient effect, and the like.
In particular, high-viscosity oils have a sticky nature, and therefore tend to be a smooth cosmetic film on the skin surface, and are applied to lip cosmetics (see, for example, Patent Documents 1 to 3). Moreover, since it is sticky and has a massage property, there is a technique applied to cleansing cosmetics (see, for example, Patent Document 4).

On the other hand, when cosmetics are applied to the skin, not only skin care effects such as moisturizing and whitening, but also a cosmetic finish that is closer to the skin is required. The bare skin is required to have an appropriate brightness from the original skin color, and there is a technique using glittering powder (see, for example, Patent Document 5).
JP 2003-137733 A JP 2004-83502 A JP 2005-247776 A JP 2006-306780 A JP-A-6-56628

However, the techniques of Patent Documents 1 to 3 using a highly viscous oil agent are excellent in a decorative film after application, but are not expected as a bare skin feeling. Moreover, in the technique of patent document 4, although there exists an effect which improves a cleansing effect by the feeling of contact | adherence to the skin which is the characteristic of the viscous oil agent, it was not especially anticipated about a fresh feeling of use and a bare skin feeling. . The technique of Patent Document 5 is a technique related to a feeling of skin using glitter powder, but is a technique related to powder cosmetics such as makeup cosmetics, and was not expected to be fresh and smooth. .
Therefore, in these technologies, there is no disclosure of a technology relating to cosmetics that are excellent in skin feel but fresh and have a smooth feeling of use, and it is an object of the present invention to develop this.

  In view of such a situation, the present inventor has made a high viscosity oil agent by making a highly viscous oil agent having a specific viscosity into an oil-in-water emulsified cosmetic using a specific surfactant as a result of intensive studies. Oil-in-water emulsified cosmetics that have a fresh, smooth feeling when used, and contain a specific amount of glittering powder. The present inventors have found that a type emulsified cosmetic can be obtained, and have completed the present invention.

That is, the present invention comprises the following components (a) to (c);
(A) kinematic viscosity at 40 ° C. is 10000 mm ² / s is more than 300000mm ² / s or less high viscosity oil (b) a surfactant that is liquid at 25 ° C. (c) bright powder 0.5 to 10 mass%
And the component (a) is 50% by mass or more of the oily component, and relates to an oil-in-water emulsified cosmetic.

  The present invention relates to an oil-in-water emulsified cosmetic, wherein the component (b) is a nonionic surfactant.

  The present invention relates to an oil-in-water emulsified cosmetic having a solid oil content of less than 0.5% by mass.

  The present invention relates to an oil-in-water emulsified cosmetic, wherein component (a) is hydrogenated polyisobutene.

  The content of the component (a) is 3 to 15% by mass, and relates to an oil-in-water emulsified cosmetic.

  The present invention relates to an oil-in-water emulsified cosmetic, wherein component (c) is mica titanium.

  The present invention relates to an oil-in-water emulsified cosmetic, wherein the average particle size of the emulsified droplets is 0.01 to 1 μm.

  The oil-in-water emulsified cosmetic of the present invention has a quality that is fresh and smooth, and has an excellent feeling of skin.

High viscosity oil kinematic viscosity at 40 ° C. of component (a) used in the present invention is less than 10000 mm ² / s or more 300000mm ² / s is contained for the purpose of giving the skin a feeling to the skin together with the component (c) Is. Specifically, any of those usually used in cosmetics can be used, and examples thereof include heavy liquid isoparaffin, polybutene, polyisobutene, hydrogenated polyisobutene, and α-olefin oligomer. In the present invention, hydrogenated polyisobutene is preferable because it is easy to obtain a bare skin feeling. Commercially available products include Pearl Ream 18 (40 ° C. Kinematic Viscosity 10,000 mm ² / s), Pearl Ream 24 (40 ° C. Kinematic Viscosity 40000 mm ² / s), Pearl Ream 46 (40 ° C. Kinematic Viscosity 200000 mm ² / s), (above, (Manufactured by NOF Corporation) and the like. One or more of these can be appropriately selected and used.
In addition, when the kinematic viscosity of the component (a) used in the present invention is less than 10,000 mm ² / s, the effect of giving a glossy feeling on the skin is inferior, and the skin feeling that is synergistic with the component (c) is obtained. If it is not possible, and it exceeds 300,000 mm ² / s, even if it is an emulsion, the smooth elongation on the skin cannot be obtained. In addition, the feeling of the bare skin in this invention refers to the state of the makeup | decoration film | membrane close | similar to bare skin by the synergistic effect with a component (c) instead of the glossiness which an oil agent has.

It is essential that the high-viscosity oil of component (a) used in the present invention is at least 50% by mass (hereinafter, mass% is abbreviated as “%”) in the oil component. If it is less than 50%, a glossy feeling cannot be obtained and a bare skin feeling cannot be obtained.
Further, the content of the component (a) used in the present invention is not particularly limited, but if it is 3 to 15% during the entire makeup, a feeling of bare skin can be obtained, which is preferable.

The surfactant that is liquid at 25 ° C. of the component (b) used in the present invention is used for the purpose of emulsifying the oil containing the component (a), and is fresh and smooth oil-in-water emulsification. Cosmetics can be obtained.
As the component (b) used in the present invention, any component can be used as long as it is generally used in cosmetics. Specifically, nonionic surfactants, anionic surfactants, cationic compounds can be used. Nonionic surfactants include glycerin fatty acid esters and alkylene glycol adducts thereof, polyglycerin fatty acid esters and alkylene glycol adducts thereof, propylene glycol fatty acid esters and alkylene glycols thereof. Adducts, sorbitan fatty acid esters and alkylene glycol adducts thereof, fatty acid esters of sorbitol and alkylene glycol adducts thereof, polyalkylene glycol fatty acid esters, polyoxyalkylene alkyl ethers, glycerin alkyl ethers, polyols Shi alkylphenyl ethers, polyoxyethylene hardened castor oil, alkylene glycol adducts of lanolin. Examples of the anionic surfactant include inorganic and organic salts of isostearic acid. Among these, nonionic surfactants can be preferred from the viewpoint of excellent emulsification stability. In addition, a plurality of liquid surfactants may be combined, and if the HLB is in the range of 6 to 13, the oil-in-water emulsified cosmetic composition of the present application containing a highly viscous oil agent can obtain a fresher one. It is. Particularly preferred is a polyoxyethylene hydrogenated castor oil-based surfactant having an ethylene oxide addition number of 40 or less, which is liquid at 25 ° C., and is likely to provide a fresh feeling of use. Specific examples include NIKKOL HCO-5 (HLB6.0), NIKKOL HCO-10 (HLB6.5), NIKKOL HCO-20 (HLB10.5), NIKKOL HCO-30 (HLB11.0), NIKKOL HCO. -40 (HLB12.5) (manufactured by Nikko Chemicals), EMALEX HC-5 (HLB6.0), EMALEX HC-7 (HLB6.2), EMALEX HC-10 (HLB6.5), EMALEX HC-20 (HLB10.5), EMALEX HC-30 (HLB11.0), EMALEX HC-40 (HLB12.5) (above, manufactured by Nippon Emulsion Co., Ltd.) and the like.

The glittering powder of component (c) used in the present invention is contained for the purpose of giving the coated film a feeling of bare skin, and any one can be used as long as it is generally used in cosmetics. In addition, it is a powder having interference light due to its brilliant and natural skin feeling. Further, the shape is preferably a plate-like shape, and has a structure covered with several layers. As materials, any of inorganic and organic materials can be used. Specifically, cerium oxide, barium sulfate, talc, muscovite, phlogopite, saucite, biotite, synthetic mica, sericite. (Sericite), synthetic sericite, aluminum oxide, magnesium oxide, aluminum silicate, calcium silicate, barium silicate, magnesium silicate, calcium carbonate, magnesium carbonate, boron nitride and other inorganic plate powder, polyamide resin , Polyethylene resin, polyacrylic resin, polyester resin, fluorine resin, cellulose resin, polystyrene resin, copolymer resin such as styrene-acrylic copolymer resin, polypropylene resin, silicone resin, urethane resin, zinc stearate And organic plate-like powders such as N-acyl lysine. La as a base powder, in which is covered with different in material material, a powder having an interference light.
Specifically, titanium oxide coated mica, titanium oxide coated bismuth oxychloride, titanium oxide coated plate alumina, titanium oxide coated plate silica, titanium oxide coated plate barium sulfate, silica coated mica, silica coated bismuth oxychloride, silica Examples thereof include coated plate-like alumina, silica-coated plate-like barium sulfate and the like, and these powders can be used alone or in combination of two or more thereof, fluorine compounds, silicone oils, metal soaps, interfaces. The surface treatment may be performed by a known method using an activator, oil or fat, hydrocarbon, or the like.
Among these, muscovite, phlogopite, saucite, biotite, synthetic mica, sericite (sericite), synthetic, from the viewpoint that it is easy to obtain interference light with excellent skin feel and that it can be easily incorporated into cosmetics. A plate-like powder having sericite as a base powder is preferably coated with titanium oxide.

The component (c) used in the present invention has yellow to red interference light when used as a coating film, and an average particle size in the range of 10 to 50 μm can be mentioned as a particularly preferable one. If it is the powder of this area | region, the finish with a favorable bare skin feeling can be obtained.
Specifically, TIMRON SUPER RED, TIMRON SUPER GOLD TIMIRON TIMIRON SPLENDID RED, TIMRON SPLENDID GOLD (manufactured by MERCK Corporation), FLAMENCO RED 420C, FLAMENCO GOLDOR 220C, FLAMENCO GOLDAM 220C Etc.

  Content of the component (c) used for this invention should just be 0.5 to 10%, More preferably, it is 1 to 5%. If the content is less than 0.5%, it is not possible to obtain a feeling of bare skin, and if it exceeds 10%, the effect as a makeup rather than a feeling of bare skin becomes remarkable, so it is necessary to use within this range.

  In the oil-in-water emulsified cosmetic of the present invention, water is used as a dispersion medium for the purpose of obtaining freshness and the oily component, and the glittering powder, but it is not particularly limited as long as it is used in cosmetics. Examples include purified water, hot spring water, deep water, or steam distilled water such as plants. Purified water such as ion-exchanged water or distilled water is particularly preferable because there are few impurities such as metal ions.

  The amount of water used in the present invention is appropriately determined depending on the contents of components (a) to (c), but is generally 20 to 90%.

  The average particle diameter of the emulsified droplets of the oil-in-water emulsified cosmetic of the present invention is not particularly limited, but it is preferably 0.01 to 1 μm because it can provide a fresh and smooth feeling of use. If it is 1-0.8 micrometer, especially preferable usability | use_condition can be obtained (a measurement using the Beckman Coulter Co., Ltd. Coulter counter) for an average particle diameter. Further, the oil-in-water emulsified cosmetic of the present invention produced in this way is excellent in stability over time, and an emulsion-like dosage form having a viscosity at 30 ° C. of 30000 mPa · s or less is conventionally known. Although it is difficult to achieve both, it is possible to make the skin feel excellent while having a fresh and smooth feeling of use. In addition, a Brookfield viscometer can be used for the measurement of a viscosity value here, and it can measure using "single cylinder type rotational viscometer-Bismetron" (made by Shibaura system company) etc.

  In the oil-in-water emulsified cosmetic of the present invention, the solid oil content is preferably less than 0.5%. If it exceeds 0.5%, smooth elongation may not be obtained. The solid oil in the present invention is solid at 40 ° C., and hydrocarbons, waxes, hardened oils, higher fatty acids, higher alcohols, and the like can be used. Specifically, for example, solid paraffin wax, ceresin wax, microcrystalline wax, ethylene propylene copolymer, polyethylene wax, Fischer-Tropsch wax, carnauba wax, candelilla wax, beeswax, owl, gay wax, montan wax, hydrogenated castor oil, stearin Acid, myristic acid, behenic acid, cetyl alcohol, stearyl alcohol, alkyl-modified organopolysiloxane, and the like.

  In the oil-in-water emulsified cosmetic of the present invention, various components used in normal cosmetics, quasi-drugs, pharmaceuticals and the like can be appropriately blended as necessary in addition to the above components. Examples of such components include alcohols, humectants, thickeners, preservatives, ultraviolet absorbers, pH adjusters, fragrances, medicinal ingredients, and the like.

  The oil-in-water emulsified cosmetic of the present invention is produced, for example, by the following production method. An aqueous phase composed of an aqueous component and an oil phase composed of an oil component are heated and mixed, respectively, and then emulsified. The production equipment can be prepared by a generally known technique such as dispersion emulsification, phase inversion emulsification, gel emulsification, liquid crystal emulsification, D phase emulsification, PIT emulsification using a homomixer, a disper mixer or the like. In addition, the emulsifier capable of applying a stronger shearing force than the homomixer to the mixed dispersion having the above essential components, such as a manton gourin, a French press, a colloid mill, a microfluidizer, an ultrasonic emulsifier, etc. It can also be prepared by treating with.

  The form of the oil-in-water emulsified cosmetic of the present invention can include a partial concealer, a partial control color, a base material, a skin-colored emulsion, a skin-colored lotion, and the like. Cosmetics can be in an optimal form. Moreover, the usage method includes a method of taking an appropriate amount in a normal hand.

  EXAMPLES Next, although an Example and a comparative example are given and this invention is demonstrated in detail, this invention is not restrict | limited at all by these.

Invention products 1 to 9 and comparative products 1 to 8 Oil-in-water emulsified base materials Oil-in-water type emulsified base materials having the compositions shown in Tables 1 and 2 below are prepared and used (freshness, smooth elongation, skin feel). The results are shown in Tables 1 and 2 together.

(Production method)
A: 1 to 10 are uniformly mixed with a disper and heated. (70 ° C)
B: Mix uniformly with 11-12 disperser and heat. (70 ° C)
C: A is added to B and emulsified. (70 ° C)
D: C was cooled to 40 ° C., and 13 to 18 were added to obtain an oil-in-water emulsion base material.

[Evaluation items and evaluation methods]
Twenty women with a makeup history of 10 years or more were used as panels, and the evaluation items of feeling of use (freshness, smooth growth, skin feeling) were evaluated on a five-point basis according to criteria A, and further judged from the average score.

(Standard A)
5 points: very good 4 points: good 3 points: normal 2 points: bad 1 point: very bad (judgment)
◎: Average point 4.5 points or more ○: Average point 3.5 points or more and less than 4.5 points △: Average point 2.5 points or more and less than 3.5 points ×: Average point less than 2.5 points

From the results of the products 1 to 9 of the present invention shown in Table 1, the oil-in-water type emulsion base material of the present invention was fresh and had a smooth elongation, and a feeling of bare skin was obtained. On the other hand, the comparative product 1 containing no component (a) is very inferior to the skin feeling, and the comparative product 2 in which the viscosity of the component (a) is 9000 mm ² / s is the smoothness of the cosmetic film. The comparative product 3 in which the feel of the skin is extremely inferior and the viscosity of the component (a) is 330000 mm ² / s is too high in the smooth elongation because the viscosity is too high. Comparative product 4 in which (b) is solid is very inferior in all items, and comparative product 5 containing component (c) in the form of spherical silica is very inferior to the skin feeling. The comparative product 6 containing 0.3% of the component (c) is inferior to the skin feeling, and the comparative product 7 containing 11% of the component (c) has a uniform cosmetic film when applied. Since it is difficult to obtain, it is very inferior to the bare skin, and in the oily component of component (a) Comparative Product 8 content ratio is 44%, the skin feeling were those very poor.

Oil-in-water emulsified skin color emulsion (component) (%)
1. Cetostearyl alcohol (solid at 25 ° C) 0.2
2. Isostearic acid (liquid at 25 ° C) 2.0
3. Polyoxyethylene (10) hydrogenated castor oil 1.0
(25 ℃ liquid)
4). Octyl myristate 5.0
5. Hydrogenated polyisobutene * 2 15.0
(40 ° C. 10,000 mm ² / s)
6). Decamethylcyclopentasiloxane 2.0
7). Sodium hydroxide 0.5
8). Purified water remaining amount 9. Alkyl-modified carboxyvinyl polymer (1% aqueous solution) 10.0
10. Glycerin 4.0
11.1,3 Butylene glycol 8.0
12 Hydrogenated lecithin treatment (0.02%) Titanium oxide 2.0
(Particle size 0.7μm)
13. Bengala 0.03
14 Yellow iron oxide 0.2
15. Red yellow interference light mica titanium * 3 4.0
16. Fragrance 0.05

* 2: PAL REME 18 manufactured by NOF Corporation * 3: manufactured by FLAMENCO ORANGE 320C BASF

(Production method)
A: 1 to 6 are mixed uniformly with a disper and heated. (70 ° C)
B: Mix uniformly with a 7-8 disper and heat. (70 ° C)
C: A is added to B and emulsified. (70 ° C)
D: C was cooled to 40 ° C, 9 to 18 were added, and an underwater skin color emulsion was obtained.

  The oil-in-water emulsified skin color emulsion of Example 2 was an oil-in-water emulsified cosmetic with an average particle size of 0.8 μm, fresh and smooth elongation, and excellent skin feel.

Partially oil-in-water emulsifying control (component) (%)
1. Sorbitan isostearate (liquid at 25 ° C) 0.2
2. Polyoxyethylene (20) sorbitan monooleate 2.0
(25 ℃ liquid)
3. Polyoxyethylene (40) hydrogenated castor oil 1.0
(25 ℃ liquid)
4). Polyoxyethylene / methylpolysiloxane copolymer * 4 0.5
5. Glyceryl triisooctanoate 2.0
6). Hydrogenated polyisobutene * 5 10.0
(40 ° C. 200000 mm ² / s)
7). Dimethicone * 6 2.0
8). Purified water remaining amount 9. Methylcellulose (2% aqueous solution) 15.0
10. Methanol 2.0
11.1,3 Butylene glycol 8.0
12 Red yellow interference light mica titanium * 7 6.0
13. White interference light mica titanium * 8 2.0
14 Perfume 0.02

* 4: Silicon KF6015, Shin-Etsu Chemical Co., Ltd. * 5: Parream 46, NOF Corporation * 6: Silicon KF96 20CS, Shin-Etsu Chemical Co., Ltd. * 7: TIMRON SPLENDID RED MERCK Co., Ltd. * 8: TIMIRON TRANSWHITE MP 18 Made by MERCK Corporation

(Production method)
A: 1 to 7 are mixed uniformly with a disper and heated. (70 ° C)
B: Heat 8 (70 ° C)
C: A is added to B and emulsified. (70 ° C)
D: C was cooled to 40 ° C., and 9 to 14 were added to obtain an oil-in-water type emulsion control material.

  The oil-in-water emulsified control material of Example 3 was an oil-in-water emulsified cosmetic material having an average particle size of 1.0 μm, fresh and smooth elongation, and excellent skin feel.

Oil-in-water emulsification unevenness correction fee (component) (%)
1. Polyoxyethylene (10) hydrogenated castor oil 2.0
(25 ℃ liquid)
2. Isostearic acid 1.5
3. Dimethicone / Vinyl Dimethicone Cross Polymer 5.0
Silicone dispersion (solid content 5%) * 9
4). Hydrogenated polyisobutene * 2 15.0
(40 ° C. 10,000 mm ² / s)
5. Purified water remaining amount 6. Dipropylene glycol 8.0
7). Sodium hydroxide 0.5
8). Carboxyvinyl polymer (1%) aqueous solution 15.0
9. Titanium oxide (particle size 0.03 μm) 0.5
10. Red interference light mica titanium * 10 10.0
11. Polymethyl methacrylate powder 10.0
12 Acetylated sodium hyaluronate (1%) aqueous solution 1.0
13. Methyl paraoxybenzoate 0.2
14 Perfume 0.02

* 9: KSG-15 made by Shin-Etsu Chemical Co., Ltd. * 10: made by FLAMENCO RED 420C BASF

(Production method)
A: 1-4 are mixed uniformly with a disper and heated. (70 ° C)
B: 5-7 are uniformly mixed with a disper and heated. (70 ° C)
C: A is added to B and emulsified. (70 ° C)
D: C was cooled to 40 ° C., 8 to 14 were added, and an oil-in-water emulsification unevenness correction material was obtained.

The oil-in-water emulsified unevenness correcting material of Example 4 was an oil-in-water emulsified cosmetic having an average particle size of 0.9 μm, fresh and smooth elongation, and excellent skin feel.

Claims (7)

The following components (a) to (c);
(A) kinematic viscosity at 40 ° C. is 10000 mm ² / s is more than 300000mm ² / s or less high viscosity oil (b) a surfactant that is liquid at 25 ° C. (c) bright powder 0.5 to 10 mass%
And the component (a) is 50% by mass or more of the oil component, and the oil-in-water emulsion cosmetic.   The oil-in-water emulsified cosmetic according to claim 1, wherein the component (b) is a nonionic surfactant.   The oil-in-water emulsified cosmetic according to claim 1 or 2, wherein the solid oil content is less than 0.5% by mass.   The oil-in-water emulsified cosmetic according to any one of claims 1 to 3, wherein the component (a) is hydrogenated polyisobutene.   The oil-in-water emulsified cosmetic according to any one of claims 1 to 4, wherein the content of the component (a) is 3 to 15% by mass.   The oil-in-water emulsion cosmetic according to any one of claims 1 to 5, wherein the component (c) is mica titanium.   The oil-in-water emulsified cosmetic according to any one of claims 1 to 6, wherein the emulsified droplets have an average particle diameter of 0.01 to 1 µm.