TW201922203A - Cosmetic composition for ultraviolet rays interception including positively charged oil - Google Patents

Abstract

The invention discloses a cosmetic composition for ultraviolet rays interception including a positively charged oil, which can improve the dosage form stability by increasing the dispersibility of an inorganic powder with the positively charged oil. The cosmetic composition for ultraviolet rays interception including the positively charged oil is characterized in including: an oil phase portion including 0.1 wt% to 2 wt% of a positively charged oil containing at least one amine group, 5 wt% to 30 wt% of an inorganic ultraviolet rays interceptor containing an inorganic powder, and 15 wt% to 80 wt% of at least one of silicone oil and hydrocarbon oil; and an aqueous phase portion including at least one of water and an alcoholic compound, and forms a water-in-oil or an oil-in-water-in-oil dosage form.

Description

Cosmetic composition containing positively charged oil to block ultraviolet rays

The present invention relates to a UV-blocking cosmetic composition. More specifically, the present invention relates to a UV-blocking agent including a positively-charged oil, which can improve the dispersibility of an inorganic powder by a positively-charged oil and improve the stability of the dosage form. Discontinued cosmetic composition.

Water-in-oil (W / O) type UV blockers have the following advantages: Water resistance is higher than that of oil-in-water (O / W) type UV blockers, and it is possible to use UV-scattering agents other than UV absorbers at high levels. Inorganic UV blocker. However, the water-in-oil type ultraviolet blocker has a problem in that a sticky feeling is generated by using a surfactant having a low Hydrophile-Lipophile Balance (HLB) value. In order to solve the above-mentioned problem of water-in-oil type UV blockers (sticky phenomenon caused by the use of surfactants), the industry has also made water-in-oil type UV blockers into powder emulsions (picks) Lin emulsification) study of dosage forms. However, unlike oil-in-water type UV blockers that can stabilize large particles in the order of tens of micrometers by using a three-dimensional structure tackifier, etc., a water-in-oil type UV blocker uses a raw material that can improve stability. Restricted, so cannot solve the above problem.

In the case of an inorganic ultraviolet blocker coated with a metal salt such as aluminum hydroxide and alumina, and a fatty acid such as stearic acid, it is easily dispersed in a highly polar ester oil such as an alkyl benzoate, but Ester oils have a residual and sticky feel, so it is difficult to use them at high levels. Therefore, in order to develop a product having a thin and light feeling, a volatile silicone oil or a hydrocarbon oil may be used in the continuous phase. However, in this case, the inorganic ultraviolet blocking agent has low dispersibility and generates powder. (Powder) phenomenon of cohesion and separation of poorly mixed oil. Therefore, in order to improve the dispersibility and the stability of the dosage form of the cosmetic composition for ultraviolet blocking, it is necessary to search for a component that exerts the effect of cross-linking an oil having a thin and light feeling with an inorganic ultraviolet blocking agent.

[Prior technical literature]
[Patent Literature]
(Patent Literature) Korean Patent Publication No. 10-2014-0142412

[Problems to be Solved by the Invention]

Therefore, an object of the present invention is to provide a UV-blocking cosmetic composition including a positively-charged oil, which can improve the dispersibility of the inorganic powder and improve the stability of the dosage form by the positively-charged oil.

[Means for solving problems]

In order to achieve the above object, the present invention provides a UV-blocking cosmetic composition including a positively-charged oil, which is characterized by including: an oil phase portion including one or more amine-group-containing 0.1% to 2% by weight positively-charged oil, 5 to 30% by weight of an inorganic ultraviolet light blocking agent containing inorganic powder, and 15 to 80% by weight of any one or more of silicone oil and hydrocarbon oil; and an aqueous phase including water and alcohol compounds Any of more than one; and formed into a dosage form of water-in-oil (W / O) or oil-in-water (O / W / O).

[Inventive effect]

The UV-blocking cosmetic composition including the positively-charged oil of the present invention improves the dispersibility of the inorganic UV-blocking powder by using the positively-charged oil, thereby preventing aggregation between powders and oil separation, thereby improving the stability of the dosage form , To achieve light and refreshing use.

Hereinafter, the present invention will be described in detail.

The UV-blocking cosmetic composition including a positively-charged oil according to the present invention is characterized in that it includes an oil phase portion including one or more amine groups containing 0.1% to 2% by weight of a positively-charged oil, and 5% by weight containing an inorganic powder. % To 30% by weight of an inorganic ultraviolet blocking agent, and 15% to 80% by weight of any one or more of silicone oil and hydrocarbon oil; and a water phase portion including any one or more of water and alcohol compounds; and It is a water-in-oil (W / O) or oil-in-water (O / W / O) dosage form.

The present invention is a conventional UV-blocking cosmetic product in which inorganic powders (powders) such as titanium dioxide are agglomerated and the oil is phase-separated when the inorganic UV-blocking agent is dispersed using only silicone oil or non-polar hydrocarbon oil. The composition is improved. By including a positively charged oil in the cosmetic composition, the inorganic ultraviolet blocking agent is well dispersed in silicone oil or hydrocarbon oil, thereby preventing the phenomenon of agglomeration and phase separation of the inorganic powder. It is an unprecedented invention to improve the stability of the dosage form and achieve a light and refreshing feel. In other words, when the Pickering emulsion is formed with an inorganic powder having amphiphilic properties, the inorganic powder has improved dosage form stability because the positively-charged oil used in the present invention is uniformly aligned to the interface, so the existing interface is used. The tackiness phenomenon caused by the active agent is reduced, and the binding and separation phenomenon caused by uneven particles is suppressed, thereby stabilizing the larger Pickering emulsion of the order of tens of micrometers, so that a large phase inversion can be prepared and Easy to apply cosmetics.

The dosage form of the UV-blocking cosmetic composition including the positively charged oil of the present invention is formed into a water-in-oil (W / O) or oil-in-water-in-oil (O / W / O) form. The following formulations are listed: a water-in-oil dosage form including a water phase portion including water and alcohol compounds, and the above-mentioned oil phase portion; and an internal oil phase including any one or more of a surfactant and a UV blocking agent Oil-in-water, oil-in-water formulations including an external oil phase portion containing the positively charged oil, and a water phase portion between the internal oil phase portion and the external oil phase portion.

The positively-charged oil constituting the oil phase portion has a positive charge and has more than one amine group (-NH ₂ ) in the molecule. The amine group in the oil is aligned between the surface of the metallic inorganic powder and the oil to improve the inorganic content. The dispersibility of the powder's inorganic ultraviolet blocking agent (more specifically, the dispersibility of the inorganic ultraviolet blocking agent dispersed in any one or more of the above-mentioned silicone oil and hydrocarbon oil is improved), thereby making the inorganic powder uniform The effect of the alignment to the interface of the water phase and the oil phase. Examples of the positively-charged oil described above include one or more amine-group-containing polydimethylsiloxane (dimethicone) compounds, and more specifically, aminopropylpolydimethyl Aminopropyl dimethicone, amodimethicone, aminoethylaminopropyl dimethicone, and bisaminopropyl dimethicone Methyl siloxane (bis-aminopropyl dimethicone) and so on.

The content of the positively charged oil is 0.1% to 2% by weight, preferably 0.5% to 2% by weight, and more preferably 1% to 2% by weight based on the entire weight of the cosmetic composition. When the content is less than 0.1% by weight based on the total weight of the cosmetic composition, the dispersion effect is small, and when it exceeds 2% by weight, problems such as skin irritation may occur.

Next, the above-mentioned inorganic ultraviolet blocking agent, as an ultraviolet scattering agent including an inorganic powder, has a function of physically scattering ultraviolet rays, unlike an ultraviolet absorbing agent that absorbs ultraviolet rays. The inorganic ultraviolet blocking agent may include only an inorganic powder, or may be in a form in which the inorganic powder is dispersed in an oil. On the other hand, the above-mentioned inorganic powder may also be a composite coated with a metal salt and a fatty acid on its surface (as needed, it further includes the use of silicon oxide, hydrogenated polydimethylsiloxane, polydimethylsiloxane, and Dispersants such as triethoxy octylsilane or coating agents commonly used in inorganic powders). The composite is used to reduce the reactivity as a catalyst that a nano-sized inorganic powder would have (metal salt) and increase the dispersibility in oil (fatty acid). Examples of the metal salt include alumina and hydroxide. As the fatty acid, aluminum, aluminum stearate, and the like may be exemplified by stearic acid, isostearic acid, polyhydroxystearic acid, and sorbitan isostearate. In addition, a known technique can be applied to all matters related to the surface coating of the inorganic powder, such as the content of the metal salt and the fatty acid, or the coating thickness.

In addition, as the inorganic powder, one or more of ordinary transition metal oxides known in the industry such as titanium dioxide, titanium oxide, and zinc oxide can be used as the transition metal oxide without particular limitation. The content of the inorganic ultraviolet blocking agent as described above is 5 to 30% by weight, preferably 10 to 27% by weight based on the entire weight of the cosmetic composition. When the total weight of the cosmetic composition is less than 5% by weight, the effect of blocking ultraviolet rays will be small. When the total weight of the cosmetic composition is more than 30% by weight, a high content of inorganic powder cannot be sufficiently dispersed into the dosage form and may be used as a cosmetic. Problems with poor usability (ie, dry application).

Then, any one or more of the above-mentioned silicone oil and hydrocarbon oil is used for improving the dispersibility of the inorganic powder, and one of the silicone oil and the hydrocarbon oil may be selected for use, but in order to improve the light-weight feeling and the dispersibility of the inorganic powder It is preferable to mix a high content of silicone oil with a non-polar hydrocarbon oil. The aforementioned silicone oil may be a common silicone oil known in the industry, and examples thereof include orthosiloxanes such as disiloxane and trisiloxane, polydimethylsiloxane compounds not including amine groups, and cyclopentasiloxane , Cyclohexasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane and decamethylcyclohexasiloxane and other cyclosiloxanes, and mixtures thereof.

The hydrocarbon oil may be a conventional polar oil or a non-polar oil known in the industry having a carbon number of 3 to 20, preferably 5 to 15. As the polar oil, C12 to C15 alkyl benzoate may be exemplified. Ester, dioctyl carbonate, cetyl ethylhexanoate, decyl cocoate, diisostearyl malate, butanediol dicaprylate / dicaprate, coco-caprylate / Decanoate, pentaerythritol tetraisostearate, isopropyl palmitate, pentaerythritol tetraethylhexanoate, and mixtures thereof. Examples of the non-polar oils include isodecane, isododecane, and isodecane. Alkane compounds such as hexaane, ether compounds such as dioctyl ether, and mixtures thereof.

The content of any one or more of the above-mentioned silicone oil and hydrocarbon oil is 15% to 80% by weight, preferably 30% to 70% by weight based on the entire weight of the cosmetic composition. Stability will decrease. On the other hand, the oil phase part may further include viscosity modifiers such as distearyl dimethyl ammonium laponite, fillers such as silica (oil-absorbing powder), and lauryl polydiethanol (PEG), as necessary. 9 or more W / O surfactants such as polydimethylsiloxyethyl polydimethylsiloxane and silicon elastomers.

On the other hand, the oil phase portion may further include an organic ultraviolet blocking agent. Examples of the organic ultraviolet blocking agent include salicylic acid compounds such as o-aminobenzoic acid compounds, ethylhexyl salicylate, cinnamic acid compounds such as ethylhexyl methoxycinnamate, and benzophenones. Compounds, p-aminobenzoic acid compounds, humsalate, polycrystalline silicon-15, orklin, diethylhexylbutylamidinotriazinone, cresol triazole trisiloxane, ethylhexyltriazine Ketones, dimethyl para-aminobenzoic acid (PABA) ethylhexyl ester, cresol triazole, bisethylhexyloxyphenol methoxyphenyltriazine, butylmethoxy Common UV blockers used in the industry such as Butyl methoxydibenzoylmethane and Diethylamino hydroxybenzoyl hexylbenzoate. The content of the organic ultraviolet blocking agent is not particularly limited.

Next, the water phase portion includes water and alcohol compounds, and more specifically, water such as purified water, alcohol compounds such as propylene glycol, phenoxyethanol, and ethylhexyl glycerol, and ethylenediaminetetraacetic acid can be exemplified. Acetic acid compounds such as disodium (EDTA-2NA). In addition, the aqueous phase part may further include: a tackifier such as polyacrylate-3 acrylate compound, carbomer compound, and saccharide compound; and phenylbenzimidazolesulfonic acid and 4-methylbenzylidene. Any one or more of ultraviolet blocking agents such as methyl camphor and methylenebis-benzotriazole tetramethylbutylphenol.

In addition, when the cosmetic composition of the present invention is in the form of oil-in-water-in-oil (O / W / O), it may be formed inside the water phase portion and include any of a surfactant and an ultraviolet blocking agent. One or more internal oil phase portions (in this case, the oil phase portion including the above-mentioned positively charged oil is referred to as an external oil phase portion).

Examples of the surfactant include stearic acid compounds such as PEG-100 stearate (a surfactant having a high HLB capable of forming an O / W dosage form), and methoxy PEG-114 polyε caprolactone. Isolactone compounds (as amphiphilic polymers with both hydrophilic and lipophilic moieties, at the interface between the lipophilic component and the water phase of the internal oil phase in oil-in-water-in-oil cosmetics, It becomes a solid state below the melting point to prevent the internal oil phase from coagulating and binding), polyethylene glycol (PEG) compounds, polyglycerin compounds, sugar surfactants, and ionic surfactants.

Examples of the ultraviolet blocking agent include diethylhexyloxyphenol methoxyphenyltriazine, butylmethoxydibenzoylmethane, and diethylaminohydroxybenzylbenzoic acid hexyl ester. , Salicylic acid compounds such as o-aminobenzoic acid compounds, ethylhexyl salicylate, cinnamic acid compounds such as ethylhexyl methoxycinnamate, benzophenone compounds, p-aminobenzoic acid compounds , Humsalate, polycrystalline silicon-15, oxaliline, diethylhexylbutylamidinotriazinone, cresol triazole trisiloxane, ethylhexyltriazinone, dimethyl p-aminobenzoic acid Common UV blockers used in the industry such as ethylhexyl ester and cresol triazole.

On the other hand, the content of the water phase portion and the internal oil phase portion may be different depending on the target formulation and the like, and is not particularly limited. However, as an example, when the dosage form of the cosmetic composition is a water-in-oil type, the content of the water phase portion may be 10% to 60% by weight based on the entire weight of the cosmetic composition. In the case of an oil-in-water-in-oil type, the content of the water phase portion may be 5% to 30% by weight relative to the entire weight of the cosmetic composition, and the content of the internal oil phase portion may be relative to the entire cosmetic composition. The weight is 5 to 30% by weight.

Hereinafter, in order to help understand the present invention, preferred embodiments are provided. The following embodiments are only used to illustrate the present invention. The industry should understand that various changes and modifications can be made within the scope of the present invention and the technical idea. Changes and amendments naturally also fall within the scope of the accompanying invention application patent.

[Example 1] Preparation of a UV-blocking cosmetic composition including a positively charged oil

First, according to the composition of Example 1 in Table 1 below, the internal oil phase component (internal oil phase portion) was heated to 75 ° C to dissolve and mix uniformly, and the external oil phase component (external oil phase) was uniformly dissolved and mixed. unit). Next, the water phase component (water phase portion) is heated to 70 ° C to dissolve and mix uniformly, and then while stirring, the above-mentioned internal oil phase component mixture is put into the preparation of an oil-in-water mixture, while stirring, facing this The above external oil phase component mixture was put in place to prepare an oil-in-water-in-oil-type ultraviolet blocking cosmetic composition.
[Table 1]
※ Unit: Weight% (wt%)

[Example 2] Preparation of a UV-blocking cosmetic composition including a positively charged oil

Except having changed the composition of Example 2 of the said Table 1, it carried out similarly to the said Example 1, and prepared the oil-in-water-in-oil type ultraviolet-blocking cosmetics composition.

[Comparative Example 1] Preparation of a UV-blocking cosmetic composition

Except having changed the composition of the comparative example 1 of the said Table 1, it carried out similarly to the said Example 1, and produced the oil-in-water-in-oil type ultraviolet-blocking cosmetics composition.

[Comparative Example 2] Preparation of a UV-blocking cosmetic composition

Except having changed the composition of the comparative example 2 of the said Table 1, it carried out similarly to the said Example 1, and produced the oil-in-water-in-oil type ultraviolet-blocking cosmetics composition.

[Experimental example 1] Evaluation of dosage form stability

The cosmetic composition prepared by the above-mentioned Examples 1 and 2 and Comparative Examples 1 and 2 was observed with an optical microscope (ECLIPSE 80i, Nikon Corporation, Japan) to evaluate the formulation stability (powder emulsification stability). 1A to 1D are images of an ultraviolet blocking cosmetic composition prepared according to an example and a comparative example of the present invention using an optical microscope. FIG. 1A corresponds to Example 1, and FIG. 1B corresponds to Example 2. FIG. 1C corresponds to Comparative Example 1, and FIG. 1D corresponds to Comparative Example 2.

As described above, the stability of the dosage form of each cosmetic composition was observed and evaluated. As a result, it was confirmed that, as shown in FIGS. 1A to 1D, a positively charged oil (aminopropylpolydimethylsiloxane) was not used. Oxyalkane or amine-terminated polydimethylsiloxane) In Comparative Example 1, the titanium dioxide powder could not be uniformly arranged at the interface between the oil phase and the water phase. On the contrary, in Example 1 using a positively charged oil or In Example 2, the titanium dioxide powder was uniformly arranged at the interface between the oil phase and the water phase with particles having a size of 10 μm to 20 μm. On the other hand, the alignment uniformity of the particles of Comparative Example 2 is similar to that of Example 2, but according to the stability results of Table 2 below, it can be confirmed that Example 2 is at room temperature, 45 degrees, cycle + vibration (Cycle + Shaking, Cyc + Sh), cycle (Cycle) conditions, but Comparative Example 2 quickly separated, so it showed a significant difference in the stability of the dosage form.

[Test Example 2] Evaluation of hardness and constant temperature stability

The hardness and constant temperature stability of the cosmetic composition prepared in the above-mentioned Examples 1 and 2 and Comparative Examples 1 and 2 were evaluated. The hardness was measured with SUN RHEO METER COMPAC-100 (SUN SCIENCTIFIC CO., LTD., Japan), and each cosmetic composition was placed in a constant temperature bath maintained at a specific temperature to measure the constant temperature stability. The results are shown in the following table. 2. On the other hand, in Table 2 below, Cyc + Sh was measured in a constant temperature tank that was vibrated at a speed of 150 rpm (heated at -15 ° C to 45 ° C and repeated at each temperature for 12 hours) ( (Cycle + vibration), Cyc (cycle) was measured by heating at -15 ° C to 45 ° C and repeating each temperature for 12 hours.
[Table 2]

As shown in Table 2 above, in Comparative Examples 1 and 2 in which a positively charged oil is not used, Pickering emulsified (powder emulsified) particles are large and uneven, so the particles are bonded and hardness is obtained after 4 weeks. In addition, oil separation occurs under most temperature conditions, which also causes problems in terms of constant temperature stability. On the contrary, in Examples 1 and 2 using positively charged oil, the Pickering emulsified (powder emulsified) particles are small and uniform, so the hardness is maintained without decreasing after 4 weeks, and the constant temperature stability is also It is excellent under all temperature conditions, thereby confirming that the oil separation phenomenon at room temperature and high temperature, which occurs when inorganic powder cannot be sufficiently dispersed to the oil in the external oil phase by using a positively charged oil, is improved. On the other hand, it can be seen that in Comparative Example 1 together with the oil separation phenomenon, the inorganic powder cannot be aligned uniformly to the interface to form large particles. Therefore, the phenomenon that the particles are combined at low temperature and the internal phase water is also separated. In Example 1 using a positively charged oil, the stability at low temperature was improved without separation.

no.

1A to 1D are images of an ultraviolet blocking cosmetic composition prepared by an example and a comparative example of the present invention using an optical microscope.

Claims (15)

A cosmetic composition comprising a positively charged oil for blocking UV rays, including: The oil phase portion includes one or more of the positively charged oils containing 0.1% to 2% by weight of an amine group, 5% to 30% by weight of an inorganic ultraviolet light blocking agent containing inorganic powder, and 15% to 80% by weight. Any one or more of silicone oil and hydrocarbon oil by weight; and Water phase part, including any one or more of water and alcohol compounds; The cosmetic composition is formed into a dosage form of water-in-oil (W / O) or oil-in-water (O / W / O). The cosmetic composition including a positively-charged oil as described in item 1 of the scope of the patent application, wherein the positively-charged oil is one or more amine-containing polydimethylsiloxane (silicone) -based compounds. The cosmetic composition including a positively charged oil according to item 1 of the scope of the patent application, wherein the positively charged oil is selected from the group consisting of aminopropyl dimethicone, amino-terminated polydimethylsiloxane A group consisting of amodimethicone, aminoethylaminopropyl dimethicone, and bis-aminopropyl dimethicone . The cosmetic composition including a positively charged oil according to item 1 of the scope of the patent application, wherein the inorganic powder is a transition metal oxide selected from the group consisting of titanium dioxide, titanium oxide, and zinc oxide. The cosmetic composition including a positively charged oil according to item 1 of the scope of the patent application, wherein the inorganic powder is a composite of a metal salt and a fatty acid coated on its surface. The cosmetic composition including a positively-charged oil according to item 5 of the patent application scope, wherein the metal salt is selected from the group consisting of alumina, aluminum hydroxide, and aluminum stearate, and the fatty acid is selected from stearic acid , Isostearic acid, polyhydroxystearic acid and sorbitan isostearate. The cosmetic composition including a positively-charged oil according to item 1 of the patent application scope, wherein the oil phase portion further includes an organic ultraviolet blocking agent. The cosmetic composition including a positively charged oil according to item 7 of the scope of the patent application, wherein the organic ultraviolet blocking agent is selected from the group consisting of an o-aminobenzoic acid compound, a salicylic acid compound, a cinnamic acid compound, and benzophenone. Compounds, p-aminobenzoic acid compounds, humsalate, polycrystalline silicon-15, oxaliline, diethylhexylbutanylaminotriazinone, cresol triazole trisiloxane, ethylhexyltrisiloxane Oxazinone, ethylhexyl dimethyl p-aminobenzoate, cresol triazole, diethylhexyloxyphenol methoxyphenyltriazine, butylmethoxydibenzoylmethane and diethylamino A group consisting of hexyl hydroxybenzyl benzoate. The cosmetic composition including a positively-charged oil according to item 1 of the scope of the patent application, wherein the silicone oil is selected from the group consisting of orthosilane, polydimethylsiloxanes not including amine groups, cyclosiloxanes, and In a group consisting of a mixture thereof, the hydrocarbon oil is a polar oil or a non-polar oil having a carbon number of 3 to 20. The cosmetic composition including a positively-charged oil according to item 1 of the patent application scope, wherein the oil phase portion further includes any one selected from the group consisting of a viscosity modifier, a filler, a surfactant, and a silicone elastomer. More than one. The cosmetic composition including a positively-charged oil according to item 1 of the scope of the patent application, wherein the aqueous phase portion further includes a thickener selected from the group consisting of an acrylate compound, a carbomer compound, and a carbohydrate compound. Agents, and any ultraviolet blocking agent selected from the group consisting of phenylbenzimidazolesulfonic acid, 4-methylbenzylidene camphor, and methylenebis-benzotriazole tetramethylbutylphenol. More than one. The cosmetic composition including a positively charged oil according to item 1 of the scope of the patent application, wherein the cosmetic composition is an oil-in-water-in-oil (O / W) further including an internal oil phase portion formed to the inside of the water phase portion / O) type. The cosmetic composition including a positively charged oil according to item 12 of the scope of the patent application, wherein the internal oil phase portion includes any one or more of a surfactant and an ultraviolet blocking agent. The cosmetic composition including a positively-charged oil according to item 13 of the scope of the patent application, wherein the surfactant is selected from the group consisting of stearates, lactones, polyethylene glycols, and polyglycerols. , A group of saccharide surfactants and ionic surfactants. The cosmetic composition including a positively charged oil according to item 13 of the scope of the patent application, wherein the ultraviolet blocking agent is selected from the group consisting of diethylhexyloxyphenol methoxyphenyltriazine, butylmethoxydibenzophenone Methane, diethylaminohydroxybenzyl benzoic acid hexyl ester, o-aminobenzoic acid compounds, salicylic acid compounds, cinnamic acid compounds, benzophenone compounds, p-aminobenzoic acid compounds, Homosalate, polycrystalline silicon-15, oxaliline, diethylhexylbutylamidinotriazinone, cresol triazole trisiloxane, ethylhexyltriazinone, dimethyl p-aminobenzoic acid ethyl ester A group consisting of methylhexyl ester and cresol triazole.