KR20090037163A - Cosmetics composition of macro w/o emulsion - Google Patents

Abstract

A cosmetic composition of macro water-in-oil type emulsion is provided to form particles with the particle size of 10 mum or greater and to improve formulation stability by using a dimethicone-cross-polymer connected with a hydrophilic bonding group and comprising an organic sieved pigment. A cosmetic composition of macro water-in-oil type emulsion comprises (i) a dimethicone-cross-polymer connected with a hydrophilic linker and (ii) organic sieved pigments. The hydrophilic linker is at least one kind selected from the group consisting of a diallyl polyglycerin linker and PEG(Polyethylene glycol)-based diallyl ethers linker.

Description

Giant water-in-oil emulsion cosmetic composition {Cosmetics composition of Macro W / O emulsion}

The present invention relates to a large water-in-oil emulsion cosmetic composition, and more particularly, a macro-in-oil emulsion prepared by using a dimethicone cross-polymer connected with a hydrophilic bond group as a main emulsifier and containing an organic pigment. It relates to a cosmetic composition consisting of an emulsion). The hydrophilic linking group used in the present invention is a dimethicone and diallyl polyglycerin linker or a dimethicone and PEG (polyethylene glycol) diallyl ether linker.

In addition, the water-in-oil emulsion cosmetic composition according to the present invention comprises the dimethicone cross-polymer in 0.1 to 20.0% by weight relative to the total weight of the total cosmetic composition, the organic pigment is contained in 0.1 to 10.0% by weight. At this time, the average particle size of the prepared emulsion is characterized in that more than five times larger than the average particle size of the general water-in-oil emulsion, and when applied to the skin gives a soft coating feeling due to the larger average particle size than the existing emulsion and has an immediate moisture recognition effect.

The water-in-oil emulsion generally applied in the cosmetic field is made using a monomolecular type Low HLB (hydrophile-liphophile balance) surfactant represented by the following Chemical Formula 1, or a polymer type such as dimethicone copolyol represented by the following Chemical Formula 2. Made using Low HLB surfactant. The water-in-oil emulsion produced by the above two methods has a feature that is more viscous than elastic and has an average particle size of about 0.5-2㎛. When the water-in-oil type emulsion cosmetics are used, the characteristics are strong when applied to the skin, and because the continuous phase is an oil phase, it has an oily feeling.

Monomer Water-in-oil Emulsifier

<Dimethicone Copolyol Water-in-oil Emulsifier>

Therefore, a method of making a large water-in-oil emulsion has been studied as one of the methods proposed to realize a smooth application with low resistance and a feeling of moisture when applied. For example, a method of preparing a water-in-oil emulsion without using a surfactant, such as a pickling emulsion, is being studied. In the case of such a pickling emulsion, even when applied to a water-in-oil type, it is difficult to maintain stability. Hard to find

In addition, although the average particle size of the emulsion is about 2 times larger than that of the general water-in-oil emulsion, polyglycerin-based surfactants can be used to make an emulsion. It doesn't have merit.

Therefore, the present inventors use dimethicone cross-polymer connected with a hydrophilic bond group as a main emulsifier to prepare a water-in-oil emulsion having an advantage in terms of usability, and by containing organic pigments therein, the average particle size is 5 The present invention has been found to be able to prepare a macro water in oil type emulsion, which is twice or more and gives a soft coating feeling when used and exhibits immediate water perception effect.

Accordingly, an object of the present invention is to provide a large water-in-oil cosmetic composition having a smooth application and instant moisture recognition effect in use.

In order to achieve the above object, the present invention provides a large water-in-oil emulsion cosmetic composition prepared by using a dimethicone cross-polymer connected with a hydrophilic coupling group as a main emulsifier, and containing an organic pigment.

In the water-in-oil emulsion cosmetic composition of the present invention, the content of the dimethicone cross polymer connected to the hydrophilic linking group is preferably 0.1 to 20.0% by weight based on the total weight of the total cosmetic composition, the organic pigment is 0.1 to 10.0% by weight It is preferable to contain.

The water-in-oil emulsion cosmetic composition according to the present invention comprises a dimethicone cross-polymer connected with a hydrophilic linking group, and contains an organic pigment to form a large particle emulsion of 10 μm or more, thereby exhibiting smooth application and instant moisture. Stability is improved.

Hereinafter, the present invention will be described in more detail.

In general, water-in-oil emulsions applied to cosmetics have an average particle size of about 0.5-2.0 ㎛, and has a property that is relatively not easily broken by shear applied from the outside compared to oil-in-water emulsions. In the case of water-in-oil emulsions, the composition of the flow control agent present in the viscosity or continuous phase determines the applicability. However, if the water-in-oil emulsion of the average particle size is large and easily broken in the external shear, it can be characterized as exhibiting smooth application even at low viscosity.

In general, dimethicone copolyol-based emulsifiers, which are widely known as water-in-oil type emulsifiers, are usually difficult to produce emulsions having a large average particle size of 5.0 μm or more.

The basic structural formula of the dimethicone cross polymer type water-in-oil emulsifier connected with a hydrophilic bonding group used in the present invention may be represented by the following Chemical Formula 3:

Examples of the hydrophilic bonding group used to form the dimethicone and the cross polymer in the present invention include a diallyl polyglycerol group and a PEG (polyethylene glycol) diallyl ether group.

The diallyl polyglycerin-based linking group forming a cross-polymer with dimethicone includes diallyl polyglycerin-N type such as diallyl polyglycerin-3, diallyl polyglycerin-4 and diallyl polyglycerine-6. It is preferable that N is about 3-10. As the diallyl polyglycerol-based linking group is N, the flexibility of the resulting cross-polymer is improved and the hydrophilicity is increased.

In addition, PEG-based diallyl ether-based linking groups forming cross-polymers with dimethicone include diallyl, such as diallyl PEG-10, diallyl PEG-12, and diallyl PEG-15. ) PEG-N type, the N value is preferably about 8-20. As the PEG-based diallyl ether-based linking group increases in N, the flexibility of the resulting cross-polymer is improved and the hydrophilicity is increased.

In the present invention, specific examples of the dimethicone cross polymer connected to the hydrophilic linking group used may include a dimethicone / polyglycerin-3 cross polymer (trade name KSG-710) and a dimethicone / PEG-10 / 15 cross polymer (trade name KSG-) manufactured by Shin Etsu. 210 or KSG-240), but is not limited thereto.

Dimethicone / Polyglycerin-3 Cross-Polymer (trade name KSG-710) and Dimethicone / PEG-10 / 15 Cross-Polymer are dimethicone cross polymers used for viscosity control or feeling control. Made of glycol (polyethyleneglycol) is an amorphous polymer compound.

In the test example of the present invention, a cross-polymer composed of the dimethicone and diallyl polyglycerin-based linking group or a cross-polymer composed of dimethicone and PEG-based diallyl ether-based linker is used, and the organic water-based emulsion is further contained by further containing an organic pigment. It was confirmed that the water-in-oil type emulsion particles having a particle size larger than 5 times larger than the average particle size of the particles could be easily formed on the external shear, smoothly applied, and have an immediate cognitive effect (FIG. 1 and FIG. 1). 2).

In the water-in-oil emulsion cosmetic composition of the present invention, the content of the dimethicone cross polymer linked with a hydrophilic linking group is preferably 0.1 to 20.0 wt% with respect to the total weight of the entire cosmetic composition, and when the content is less than 0.1 wt%, the emulsion is very unstable. If it exceeds 20.0% by weight, it is not suitable because it is difficult to feel an instant moisture.

Examples of the organic pigments used in the present invention include polymethylsilsesquioxane (PMSQ), polymethyl methacrylate (PMMA), nylon powder and polyurethane powder.

The organic pigment in the water-in-oil emulsion cosmetic composition of the present invention is preferably contained in 0.1 to 10.0% by weight based on the total weight of the total cosmetic composition. If the content is less than 0.1% by weight, the emulsion is very unstable, and if it exceeds 10.0% by weight, it is not suitable because it is difficult to feel the instant moisture.

The water-in-oil emulsion cosmetic composition of the present invention is preferably suitable for products of general creams and lotions of moisturizing and protective functions, but for sun protection, including foundations, makeup base cosmetics or sunscreen containing pigments to correct skin color It can be manufactured and used according to the use as a cosmetic.

The pigment is titanium oxide (titanium dioxide, TiO ₂ ), micro titanium oxide (Micro TiO ₂ ), zinc oxide (zinc oxide, ZnO), micro zinc oxide (Micro ZnO), iron oxide (iron oxide FeO (II) Fe ₂ O ₃ (III), Fe ₃ O ₄ (IV)), aluminum oxide (alumina, Al ₂ O ₃ ), barium sulfate (barium sulfate, BaSO ₃ ), silicon dioxide (silica, SiO ₂ ), talc, kaolin, seri It may be selected from the group consisting of a site and a mica, and may include those surface-treated with organic, inorganic or silicon.

The sunscreens include benzophenone sunscreens such as benzophenone-3, cinnamate sunscreens such as 2-ethylhexylmethoxycinnamate, salicylate sunscreens such as ethylhexyl salicylate, and bisethylhexyloxy And triazine-based sunscreens such as phenol methoxyphenyltriazine.

In addition, the water-in-oil emulsion cosmetic composition according to the present invention could form a large water-in-oil emulsion having an average particle size of the emulsion of 10 μm or more, and more preferably form a water-in-oil emulsion of 10 to 40 μm.

Hereinafter, the present invention will be described in more detail with reference to Examples. These examples are only for illustrating the present invention in more detail, and the scope of the present invention is not limited by these examples in accordance with the gist of the present invention to those skilled in the art. Will be self-evident.

[Examples 1-5 and Comparative Examples 1-2]

The emulsion of Examples 1-5 and Comparative Examples 1-2 was prepared according to the composition shown in Table 1 below.

division Raw material name Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 Comparative Example 2  Oily ingredients Decamethylcyclopentasiloxane 10.00 10.00 10.00 10.00 10.00 10.00 10.00 Dicaprylylcarbonate 10.00 10.00 10.00 10.00 10.00 10.00 10.00 Squalane 10.00 10.00 10.00 10.00 10.00 10.00 10.00  Emulsifier Cetyl Fiji / Fifiji-10 / 1 Dimethicone - - - - - 2.00 - Dimethicone / Polyglycerin-3 Crosspolymer 1.00 2.00 5.00 10.00 20.00 - 20.00 Organic pigments Polymethylsilsesquioxane (PMSQ) 1.00 1.00 1.00 1.00 1.00 - - Flow regulator Dysteamonium hectorite 0.50 0.50 0.50 0.50 0.50 0.50 0.50 Preservative Paraoxybenzoic acid ester Quantity Quantity Quantity Quantity Quantity Quantity Quantity solvent Purified water Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Moisturizer Butylene Glycol 10.00 10.00 10.00 10.00 10.00 10.00 10.00 Ion Blocker Disodium ID 0.05 0.05 0.05 0.05 0.05 0.05 0.05 Emulsifying Stabilizer Sodium chloride 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Pigment Titanium oxide 5.00 5.00 5.00 5.00 5.00 5.00 5.00 Sunscreen 2-ethylhexyl methoxycinnamate 3.00 3.00 3.00 3.00 3.00 3.00 3.00 Preservative Phenoxyethanol Quantity Quantity Quantity Quantity Quantity Quantity Quantity

<Production process>

1) Oil phase component, emulsifier, flow control agent, oil-soluble preservative and sunscreen agent were mixed.

2) Purified water, moisturizer, ion blocker, emulsion stabilizer and water-soluble preservative were dissolved.

3) Pigment was added to the mixed solution of 1) and dispersed in a homogenizer.

4) The solution of 2) was added to the mixed solution of 3) and emulsified with a homogenizer.

Test Example 1 Confirmation of Emulsion Size, Usability and Stability According to Dimethicone / Polyglycerin-3 Cross-Polymer Content

The emulsion size, soft applicability and instant moisture feeling prepared in Examples 1 to 5 and Comparative Examples 1 and 2 were measured by the following method, and the results are shown in Table 2.

Emulsion size was measured at D (0.5) using a Master sizer 2000 (Malvern). In addition, for smooth quantitative analysis, the stress sweep test of the rheometer AR 2000 was replaced with the tangent of the drop slope of the viscosity according to the change of the shear stress in the stress sweep test.

3 is a graph illustrating the degree of viscosity decrease as the shear stress increases as a result of the stress sweep test of Example 1, more specifically, the X axis is the log scale of stress, and the Y axis is the log scale of viscosity. to be. The trend line is inferred from the slope (tanΘ) calculated by the least-square method when the X-axis (stress) is 20 to 100 Pa. The tangent value at the inflection point of the curve can be used as a representative index of the initial smooth application in cosmetics. The larger the tangent value, the softer the smearing characteristic.

In addition, smooth application (sensation) and immediate moisture were measured by the average value of the evaluation value (five-point scale) by a feeling test through a professional panel.

In addition, the emulsion stability was measured for 4 weeks in a constant temperature condition of 30 ℃, 45 ℃ and was determined by observing the oil separation and emulsion collapse of the sample compared with the stored sample at 4 ℃.

Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 Comparative Example 2 Emulsion Size (μm) 30.50 ± 8.47 26.77 ± 6.02 18.45 ± 5.00 15.24 ± 3.89 12.64 ± 3.14 2.3 ± 0.4 13.89 ± 0.4 Soft application (sensation) 4.9 4.7 4.4 4.2 4.2 2.7 4.3 Smooth application (tanΘ) 3.64 3.12 3.00 2.89 2.57 0.65 2.66 Immediate moisture 5.0 4.9 4.6 4.4 4.1 2.5 4.2 Oil painting stability usually usually good good good good Bad

<Evaluation Criteria of Five-point Scale>

5 points: very much, 4 points: yes, 3 points: normal

2 points: No, 1 point: Not very

<Emulsification Stability Evaluation Criteria>-Compared to 4 ° C sample

Poor: Oil is separated or moisture in the interior is cut off

Medium: The oil is finely divided

Good: no oil separated, no difference from 4 ° C sample

[Examples 6 to 10 and Comparative Examples 1 and 3]

According to the composition of Table 3, the emulsion of Examples 6 to 10 and Comparative Examples 1 and 3 was prepared in the same manner as in Example 1.

division Raw material name Example 6 Example 7 Example 8 Example 9 Example 10 Comparative Example 1 Comparative Example 3 Oily ingredients Decamethylcyclopentasiloxane 10.00 10.00 10.00 10.00 10.00 10.00 10.00 Dicaprylylcarbonate 10.00 10.00 10.00 10.00 10.00 10.00 10.00 Squalane 10.00 10.00 10.00 10.00 10.00 10.00 10.00 Emulsifier Cetyl Fiji / Fifiji-10 / 1 Dimethicone - - - - - 2.00 - Dimethicone / PEG-10 / 15 cross polymer 1.00 2.00 5.00 10.00 20.00 - 20.00 Organic pigments Polymethylsilsesquioxane (PMSQ) 1.00 1.00 1.00 1.00 1.00 - - Flow regulator Dysteamonium hectorite 0.50 0.50 0.50 0.50 0.50 0.50 0.50 Preservative Paraoxybenzoic acid ester Quantity Quantity Quantity Quantity Quantity Quantity Quantity solvent Purified water Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Moisturizer Butylene Glycol 10.00 10.00 10.00 10.00 10.00 10.00 10.00 Ion Blocker Disodium ID 0.05 0.05 0.05 0.05 0.05 0.05 0.05 Emulsifying Stabilizer Sodium chloride 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Pigment Titanium oxide 5.00 5.00 5.00 5.00 5.00 5.00 5.00 Sunscreen 2-ethylhexyl methoxycinnamate 3.00 3.00 3.00 3.00 3.00 3.00 3.00 Preservative Phenoxyethanol Quantity Quantity Quantity Quantity Quantity Quantity Quantity

Test Example 2 Confirmation of Emulsion Size, Usability and Stability According to Dimethicone / PEG-10 / 15 Cross-Polymer Content

The emulsion size, soft applicability, and instant moisture prepared in Examples 6 to 10 and Comparative Examples 1 and 3 were measured in the same manner as in Test Example 1, and the results are shown in Table 4 below.

Example 6 Example 7 Example 8 Example 9 Example 10 Comparative Example 1 Comparative Example 3 Emulsion Size (μm) 25.45 ± 6.42 20.18 ± 3.55 16.97 ± 2.97 13.02 ± 2.07 10.88 ± 1.97 2.3 ± 0.4 11.65 ± 1.99 Soft application (sensation) 4.9 4.7 4.4 4.2 4.2 2.7 4.2 Smooth application (tanΘ) 3.54 3.02 2.76 2.56 2.50 0.65 2.51 Immediate moisture 5.0 4.8 4.7 4.3 4.0 2.5 4.0 Oil painting stability usually usually good good good good Bad

In the results of Table 2 and Table 4, in the case of Examples 1 to 10 prepared by using a dimethicone cross-polymer connected with a hydrophilic bond group according to the present invention as an emulsifier, the soft spreadability was higher than in Comparative Example 1. This is because the emulsion particles of Examples 1 to 10 are larger than emulsions in Comparative Example 1, so that the porosity is higher, and the viscoelastic properties of the emulsion have higher elasticity than the viscosity, so that the structure easily collapses due to external frictional force. to be.

In addition, the reason why the instant moisture feeling was evaluated as high was that the interfacial film of the emulsified particles of Examples 1 to 10 was relatively weak compared to Comparative Example 1, and the water phase particles were larger in the inner phase. This is due to the visible phenomenon of the water-receiving particles.

In addition, as a result of the stability test, Comparative Examples 2 and 3 containing no organic pigments have a problem in that the formulation stability is poor, the oil is separated or the moisture in the inner phase is cut off.

[Examples 11-14]

To the emulsion of Examples 11-14 according to the composition of Table 5 was prepared in the same manner as in Example 1.

division Raw material name Example 11 Example 12 Example 13 Example 14 Oily ingredients Decamethylcyclopentasiloxane 10.00 10.00 10.00 10.00 Dicaprylylcarbonate 10.00 10.00 10.00 10.00 Squalane 10.00 10.00 10.00 10.00 Emulsifier Cetyl Fiji / Fifiji-10 / 1 Dimethicone - - - - Dimethicone / PEG-10 / 15 cross polymer 2.00 4.00 6.00 8.00 Dimethicone / Polyglycerin-3 Crosspolymer 8.00 6.00 4.00 2.00 Organic pigments Polymethylsilsesquioxane (PMSQ) 1.00 1.00 1.00 1.00 Flow regulator Dysteamonium hectorite 0.50 0.50 0.50 0.50 Preservative Paraoxybenzoic acid ester Quantity Quantity Quantity Quantity solvent Purified water Remaining amount Remaining amount Remaining amount Remaining amount Moisturizer Butylene Glycol 10.00 10.00 10.00 10.00 Ion Blocker Disodium ID 0.05 0.05 0.05 0.05 Emulsifying Stabilizer Sodium chloride 1.00 1.00 1.00 1.00 Pigment Titanium oxide 5.00 5.00 5.00 5.00 Sunscreen 2-ethylhexyl methoxycinnamate 3.00 3.00 3.00 3.00 Preservative Phenoxyethanol Quantity Quantity Quantity Quantity

Test Example 3 Identification According to Dimethicone / Polyglycerin-3 Cross-Polymer and Dimethicone / PEG-10 / 15 Cross-Polymer Combination

The emulsion size, soft spreadability and instant moisture feeling prepared in Examples 11 to 14 were measured in the same manner as in Test Example 1, and the results are shown in Table 6.

Example 11 Example 12 Example 13 Example 14 Emulsion Size (μm) 11.02 ± 1.28 13.54 ± 1.45 12.60 ± 1.64 11.82 ± 2.04 Soft application (sensation) 4.7 4.3 4.4 4.6 Smooth application (tanΘ) 2.55 2.86 2.77 2.34 Immediate moisture 4.8 4.6 4.6 4.7

In the results of Table 6, the reason why the soft applicability and instant moisture was evaluated in the case of Example 11-14 is the same reason as in the case of Example 1-10, the rise due to the mixing of two cross-polymers having different bonding groups There was no effect.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram of the huge water-in-oil emulsion of Example 1 by this invention, and a conventional W / O emulsion.

Figure 2 is a micrograph of the water-in-oil emulsion of Example 1 according to the present invention and a conventional W / O emulsion.

3 is a graph showing a change in viscosity due to friction illustrating the smooth coating properties of the water-in-oil emulsion of Example 1 according to the present invention.

Claims (11)

i) dimethicone cross polymers linked with hydrophilic linkages; And ii) Huge water-in-oil emulsion cosmetic composition containing an organic extender pigment. According to claim 1, wherein the hydrophilic coupling group is a water-in-oil emulsion cosmetic composition, characterized in that at least one member selected from the group consisting of diallyl polyglycerol-based group and PEG (polyethylene glycol) -based diallyl ether-based group. The method according to claim 2, wherein the diallyl polyglycerin-based bonding group is diallyl polyglycerin (N), wherein N is 3 to 10, the water-in-oil emulsion cosmetic composition characterized in that. The method according to claim 2, wherein the PEG (polyethylene glycol) diallyl ether-based bonding group is diallyl (diallyl) PEG-N, wherein N is a water-in-oil emulsion cosmetic composition characterized in that 8 to 20. According to claim 1, wherein the cross-polymer is a water-in-oil emulsion cosmetic composition, characterized in that contained in 0.1 to 20.0% by weight relative to the total weight of the cosmetic composition. According to claim 1, wherein the organic extender pigments water-in-oil emulsion cosmetic composition characterized in that it contains at least one selected from the group consisting of polymethylsilsesquioxane, polymethyl methacrylate, nylon powder and polyurethane. . 7. The water-in-oil emulsion cosmetic composition according to claim 6, wherein the organic extender pigment is contained in an amount of 0.1 to 20.0 wt% based on the total weight of the cosmetic composition. According to claim 1, wherein the composition is a water-in-oil emulsion cosmetic composition, characterized in that for forming a large particle having an average particle size of 10㎛ or more. The composition of claim 1, wherein the composition further contains at least one selected from the group consisting of pigments and sunscreen agents. The water-in-oil cosmetic composition according to any one of claims 1 to 9, wherein the water-in-oil cosmetic composition is formulated as a lotion, cream, foundation or makeup base. 10. The water-in-oil emulsion cosmetic composition according to any one of claims 1 to 9, wherein the water-in-oil cosmetic composition enhances application property or moisture, or enhances formulation stability.

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