KR20170061898A - Oil in Water Emulsion Sunscreen Cosmetic Composition - Google Patents

Abstract

The present invention relates to an oil-in-water emulsion-type ultraviolet barrier cosmetic composition, and more particularly to an oil-in-water emulsion-type cosmetic composition comprising an aqueous phase and an oil phase, which comprises a siloxane polymer and an acrylate copolymer Oil-in-water type ultraviolet ray blocking cosmetic composition.
The ultraviolet barrier cosmetic composition of the present invention is excellent in water resistance and oil resistance and does not decrease the ultraviolet ray shielding effect due to perspiration or sebum, and keeps the cosmetic effect constantly, and has excellent feeling without stickiness.

Description

FIELD OF THE INVENTION [0001] The present invention relates to an oil-in-water emulsion sunscreen cosmetic composition,

The present invention relates to an oil-in-water type ultraviolet barrier cosmetic composition, and more particularly, to an oil-in-water emulsion type ultraviolet barrier cosmetic composition which is excellent in water resistance and oil resistance and does not reduce the ultraviolet blocking effect by sweat or sebum.

Protection of skin from ultraviolet rays, which is one of the causes of aging, which is the cause of extrinsic aging, has recently been essential, and various ultraviolet barrier cosmetics have been developed in order to minimize adverse effects of ultraviolet rays on skin. Especially, as the public interest in UV protection products increases with the danger of exposure to sunlight, there is a tendency that various sun protection factor (SPF) and protection grade of UVA (PA) Products are being released.

Ultraviolet barrier cosmetics protect the skin by blocking ultraviolet rays by combining ultraviolet absorber and ultraviolet scattering agent. Recently, irrespective of the season, not only outdoor activities but also UV protection in everyday life is emphasized, and ultraviolet protection is emphasized in make-up cosmetics as well as ultraviolet barrier cosmetics in skin care.

In general, formulations of ultraviolet screening products are classified into water-in-oil (W / O) and water-in-water (O / W). Among them, an underwater type product is excellent in feeling but has a low water resistance, so that the ultraviolet ray shielding effect is reduced by sweat or water. On the other hand, the water-in-oil type products are superior in water resistance to water-type products, but are less usable. In addition, since these general emulsification type products can not be repeatedly used after make-up, they have a disadvantage that it is difficult to show a continuous effect.

On the other hand, if the content of the ultraviolet screening agent is increased in order to increase the ultraviolet ray shielding value of the ultraviolet ray blocking cosmetic composition, most of the ultraviolet screening agent tends to be wettable and oily when applied to the skin, It has an adverse effect on feeling. Moreover, the more the sunscreen agent is used, the more difficult it becomes to secure the stability of the formulation. In particular, the ultraviolet screener agent is often detached because it deteriorates the feeling of use of the underwater type emulsion cosmetic composition and deteriorates stability at low temperature and high temperature.

Accordingly, there is a need to develop an ultraviolet barrier cosmetic oil-in-water type having an oil resistance not only to water resistance but also to oily components such as sebum.

Korean Patent Laid-Open No. 10-2010-0059351, for example, relates to a cosmetic composition for blocking ultraviolet rays comprising an acrylate-based copolymer or a vinylpyrrolidone-based copolymer film former and has an affinity with the skin surface, Based copolymer or vinylpyrrolidone-based copolymer film former which alleviates the height and depth of the film-forming layer, thereby improving the water resistance.

Korean Patent Laid-Open No. 10-2010-0059351: Cosmetic composition for ultraviolet screening improved in water resistance

An object of the present invention is to provide an oil-in-water type ultraviolet ray blocking cosmetic composition having improved water resistance as well as low water resistance of an oil-in-water emulsion type ultraviolet barrier cosmetic composition and having a light feeling without tackiness.

In order to achieve the above object,

An oil-in-water emulsion cosmetic composition comprising an aqueous phase and an oil phase,

Wherein the film forming agent comprises a siloxane polymer and an acrylate copolymer.

The ultraviolet barrier cosmetic composition of the present invention is excellent in water resistance and oil resistance and does not decrease the ultraviolet ray shielding effect due to perspiration or sebum, and keeps the cosmetic effect constantly, and has excellent feeling without stickiness.

FIG. 1 is a photograph showing changes in transparency of water immersed in water in a sunscreen preparation of Comparative Examples 1 to 3 and Example 1 in Experimental Example 1. FIG.
FIG. 2 is a graph showing the results of measurement of haze of water immersed in water in a sunscreen preparation of Comparative Examples 1 to 3 and Example 1 in Experimental Example 1. FIG.
FIG. 3 is a graph showing changes in ultraviolet cutoff values before and after inundation of the sunscreen formulations of Comparative Examples 1 to 3 and Example 1 in Experimental Example 2. FIG.
Fig. 4 is a photograph showing changes in transparency of oil immersed in the sunscreen formulations of Comparative Examples 1 to 3 and Example 1 in Experimental Example 3. Fig.

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

The oil-in-water emulsion type ultraviolet barrier cosmetic composition of the present invention comprises a siloxane polymer and an acrylate copolymer as film forming agents.

The siloxane polymer and the acrylate copolymer form a film on the skin while being present in the oil phase and the water phase, respectively, so that the water resistance and oil resistance are improved, and the ultraviolet ray blocking effect and the cosmetic sustaining ability can be maintained for a long time.

The siloxane polymer is present in the oil phase, has no polar groups that are compatible with water, and has excellent water resistance and moisture resistance because of its large contact angle with water. Thus, a hydrophobic coating is formed on the skin to improve the water resistance of the cosmetic composition, and to enhance the oil resistance and color persistence. It is also combined with the properties of the ultraviolet screening agent when used together with the ultraviolet screening agent, and serves as a boosting agent to help the ultraviolet screening agent distribute evenly on the skin and maintain its function.

According to an embodiment of the present invention, the siloxane polymer may be one selected from the group consisting of cyclic dimethylpolysiloxane, methylchlorosilane, phenylchlorosilane, alkoxysilane, aminosilane, fluoroalkylsilane, siloxane oligomer and combinations thereof .

Specific examples of the cyclic dimethylpolysiloxane include one selected from the group consisting of hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, tetraheptamethylcycloheptasiloxane, and combinations thereof. Can be used.

In this case, the siloxane polymer is suitably used in an amount of 0.05 to 10% by weight in the total composition. If the content of the siloxane polymer is less than the above range, the function of water resistance and oil resistance is difficult to expect. On the other hand, It has a negative influence on the formulation stability.

The acrylate copolymer is present in the water phase and forms a thin film on the skin to provide resistance to water and oil. In addition, it has good adhesion and lasting power, which helps to maintain the moisture of the skin and gives a soft feeling to the skin. In particular, the use of an acrylate copolymer enables formation of a flexible double membrane, thereby improving the feeling of feeling somewhat heavy and frustrating of the siloxane polymer, thereby making it possible to produce a cosmetic composition having no tackiness and light feeling.

According to one embodiment of the present invention, the acrylate copolymer is a copolymer of C1-C4 alkyl methacrylate / methacrylic acid copolymer or C1-C4 alkyl methacrylate / methacrylic acid / C2-C10 alkyl acrylate copolymer .

Specifically, as the acrylate copolymer, butyl acrylate / methacrylic acid / methyl methacrylate copolymer (CAS 25035-69-2), ethyl acrylate / methacrylic acid copolymer (CAS 25212-88-8) Methyl acrylate / ethyl acrylate / methacrylic acid copolymer (CAS 25133-97-5), and combinations thereof.

In this case, the acrylate copolymer is suitably used in an amount of 0.05 to 10% by weight in the total composition. If the content of the acrylate copolymer is less than the above range, it is difficult to expect the effect of increasing the water resistance of the cosmetic composition for blocking ultraviolet rays. On the contrary, It is not suitable because the absorption is slow and the feeling of use is decreased.

The film forming agent is contained in an amount of 0.1 to 20% by weight based on the total weight of the cosmetic composition. More suitably from 1.0 to 10% by weight. If it is less than the above range, it is difficult to expect the effect of improving the water resistance and oil resistance of the cosmetic composition. If it is more than the above range, it is difficult to roll at the time of coating and thick and sticky, and the film is over- not.

The water-in-oil emulsion type ultraviolet barrier cosmetic composition of the present invention is composed of an upper part and an upper part, and the composition of the upper part and the upper part is not limited to the present invention and may vary depending on each formulation to be manufactured.

For example, it can be manufactured in any form of cosmetics conventionally manufactured in the art, in particular makeup cosmetics, and it can be made into any form of cosmetics such as sunscreen, makeup base, foundation, babe cream, concealer, lipstick, lip gloss, lip liner, powder, It can be used in makeup cosmetics of various formulations such as powder, powder, eye shadow, blusher, eyeliner, eye mascara, hair gel, hair mascara. It is preferably a fact formulation.

In addition, the formulations of the respective formulations may contain various kinds of bases and additives necessary for formulation of the formulations, and ordinary additives may be used as long as the effects are not impaired.

According to one embodiment of the present invention, the water-in-oil emulsion type ultraviolet barrier cosmetic composition according to the present invention comprises i) 0.05 to 10% by weight of an acrylate copolymer, 0.1 to 20% by weight of a polyol, And an upper portion including water as the remainder,

Ii) from 0.05 to 10% by weight of a siloxane polymer, from 3 to 25% by weight of a powder, from 15 to 25% by weight of an ultraviolet screening agent and from 5.0 to 50.0% by weight of an oil.

The ultraviolet screening agent used in the cosmetic composition of the present invention is not particularly limited as long as it is conventionally used in cosmetics. For example, glyceryl PABA, diethylaminohydroxybenzoylhexyl benzoate, dromatrizol trisiloxane, drometrizole, dipaloyl trioleate, disodium phenyldibenzimidazole tetracellonate, Benzylphenone-4, benzophenone-8, butylmethoxydibenzoylmethane, benzylphenol-4, benzophenone-4, benzophenone-8, butylmethoxydibenzoylmethane , Ethylhexyloxyphenol methoxyphenyltriazine, cyoxate, ethyl dihydroxypropylparabe, octocrylene, ethylhexyldimethylpara, ethylhexylmethoxycinnamate, ethylhexylsalicylate, ethylhexyltriazone, iso Amyl p-methoxy cinnamate, thiai-salicylate, p-aminobenzoic acid, phenylbenzimidazosulfonic acid, homosalate, diethylhexylbutamidotriazone, methylenebis-benzotriazolyltetramine Butylphenol, terephthalylidene dicamporosulfonic acid and its salts, polysilicon-15, benzophenone-1, benzophenone-2, benzophenone-5, benzophenone-6, benzophenone-9, 3- Diisopropyl methyl cinnamate, ethyl diisopropyl cinnamate, 2-ethylhexyldimethoxybenzylidene dioxo < RTI ID = 0.0 > Imidazolidine propionate, ethyl p-aminobenzoic acid, ferulic acid, glyceryl ethylhexanoate dimethoxy cinnamate, isopentyltrimethoxycinnamate trisiloxane, isopropyl methoxy cinnamate, isopropyl benzyl salicylate , Phage-25 parabases, polyacrylamidomethylbenzylidine camphor, potassium phenylbenzimidazole sulfonate, sodium phenylbenzimidazole sulfonate, and thiearyl-phenylbenzimidazole sulfonate To be used, and these may be used alone or in mixture of two or more.

The content of the ultraviolet screening agent is preferably 15 to 25% by weight, more preferably 20 to 25% by weight based on the total weight of the composition. When the content is less than 15% by weight, the effect of ultraviolet ray shielding is insignificant. When the content is more than 25% by weight, the stability of the emulsion is lowered and adversely affecting feeling such as stickiness, to be.

The powder refers to an aggregate of solid materials having a particle size of 1 mm or less. Powders that can be used in the present invention include extender pigments, white pigments, colored pigments, pearlescent pigments, metal powders, And the like. Further, raw materials coated with an alkylsilane, silica, mica, or the like may be used to improve water resistance and dispersibility. For example, the powders used in the present invention include extender pigments such as talc, mica, sericite, calcium carbonate, marcine anhydrous silicic acid and barium sulfate; White pigments such as titanium dioxide and zinc oxide; Coloring pigments such as red iron oxide, yellow iron oxide, black iron oxide, ultramarine, ultrafiltration, chromium oxide and carbon black; Organic pigments such as polymethyl methacrylate, polyurethane, nylon-6 and nylon-12; And pearlescent pigments, and at least one selected from the group consisting of dimethicone / vinyl dimethicone crosspolymer, vinyl dimethicone / methicillosilsesquioxane crosspolymer, dimethicone / phenylvinyl dimethicone crosspolymer and lauryl dimethicone / vinyl And a silicone-modified powder such as a dimethicone crosspolymer.

Such a powder is preferably used in an amount of 3 to 25% by weight in the total composition. If the content is less than 3% by weight, it is difficult to cover skin roughness and the like. If the content is more than 25% by weight, And the dispersion stability is problematic. Therefore, it is suitably used within the above range.

The oil used in the present invention is not particularly limited, and any oil conventionally used in this field is possible. Typically, hydrocarbon-based oils including polydecene and paraffin oil; Ester-based synthetic oils including cetyl ethylhexanoate, glyceryl trioctanoate, octyldodecyl myristate, isopropyl palmitate, isopropyl myristate and octyl palmitate; Silicone oil comprising cyclomethicone, dimethicone, cyclotetrasiloxane, cyclopentasiloxane, cyclohexasiloxane, ethenyltrisiloxane, trisiloxane and cycloheptasiloxane; Animal oil; Vegetable oils including mango butter, shea butter, copoic acid butter, macadamia seed oil; Ethoxylated alkyl ester oils; Caprylic / capric triglyceride, ceramide, and mixtures thereof.

If the content of the oil is in the range of 5.0 to 50% by weight, the ultraviolet screening agent can not be dissolved effectively. If the content of the oil exceeds the above range, the dispersion stability of the oil- Therefore, it is appropriately used within the above range.

The water phase part includes purified water and a polyol, and various additives and effective active ingredients may be further added to the water and oil phase portions. The water is distilled water, preferably deionized distilled water, and is used as the remainder to satisfy 100 wt% of the total weight%.

Typically, the polyol is glycerin, propylene glycol, dipropylene glycol, 1,3-butylene glycol, polyethylene glycol, sorbitol, 1,2-pentanediol or isoprene glycol. Such a polyol is used in an amount of 0.1 to 20.0% by weight, preferably 0.5 to 10.0% by weight, in the whole composition.

In addition, additives such as physiologically active ingredients, solvents, preservatives, pH adjusters, fatty acids, emulsifiers, antioxidants, pigments, dyes, perfumes and the like, which are well known in the art, The type and content can be appropriately selected by those skilled in the art.

At this time, other ingredients besides the composition can be arbitrarily selected and formulated according to the formulations of the other cosmetics, the purpose of use, and the like.

For example, water-soluble active ingredient may be used as a water-soluble active ingredient, and a wrinkle improving agent, a whitening agent, etc. may be used as the wrinkle improving agent. Adenosine may be used as the wrinkle improving agent. Examples of the whitening agent include mulberry extract, arbutin, ethyl ascorbyl ether, Ascorbyl tetraisobutyrate and ascorbyl tetraisobutyrate. The effective active ingredient is used in an amount of not more than 5% by weight in the aqueous phase.

In the oily phase, useful licorice, alpha-bisabolol and the like, which have a whitening effect as an effective active ingredient, can be used. As the active ingredient having a wrinkle-reducing effect, an oil soluble active ingredient such as retinol and derivatives thereof (e.g., retinyl palmitate) and the like can be used. These active ingredients are used in the range of 0.001 to 10.0% by weight in the whole composition.

The method for producing the oil-in-water emulsion type cosmetic composition according to the present invention is not particularly limited, and a conventional emulsification method may be used.

Specifically,

S1) mixing a polyol and purified water to prepare a water phase;

S2) a siloxane polymer, a powder, an ultraviolet screening agent and an oil to prepare an oily portion; And

S3) S3), an oil phase and an acrylate copolymer are added to the upper part of the water and mixed.

The acrylate copolymer may be added at the time of preparation of the aqueous phase.

The mixing process of S1), S2), and S3) is performed in a vacuum emulsification tank capable of temperature control and stirring by a conventional method, and stirring and heating are performed as necessary.

For example, the water phase is heated to 50 to 80 캜, preferably 65 to 75 캜, and the oil phase is heated to 50 to 80 캜, preferably 65 to 75 캜 to sufficiently dissolve other components in the oil .

The stirring is carried out in a vacuum emulsification tank at a speed of 2000 to 4000 rpm, preferably 3000 rpm for 3 to 10 minutes using a homomixer.

Hereinafter, preferred embodiments of the present invention will be described in order to facilitate understanding of the present invention. However, the following examples are provided to further understand the present invention, and the present invention is not limited by the examples.

Example  And Comparative Example : Sunscreen manufacture

The composition shown in the following Table 1 was added to the mixer, and the mixture was stirred at 70 DEG C for 20 minutes using a homogenizer to prepare a sunscreen.

(1) The raw materials 1 to 4 were weighed and heated and stirred.

(2) The raw materials 5 to 10 were weighed and heated and stirred.

(3) (2) was stirred and mixed with (1) slowly to emulsify.

(4) The raw materials 11 to 18, which were weighed, were added to (3) and stirred.

Raw material name Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 One Purified water to 100 to 100 to 100 to 100 2 Butylene glycol 10.00 10.00 10.00 10.00 3 Disodium iodide 0.02 0.02 0.02 0.02 4 Carbomer 0.20 0.20 0.20 0.20 5 Glyceryl stearate, phage-100 stearate 3.00 3.00 3.00 3.00 6 Setares-20 1.00 1.00 1.00 1.00 7 Cetearyl alcohol 2.00 2.00 2.00 2.00 8 Diethylaminohydroxybenzoylhexylbenzoate 2.00 2.00 2.00 2.00 9 Ethyl hexylmethoxycinnamate 7.00 7.00 7.00 7.00 10 Ethylhexyl salicylate 5.00 5.00 5.00 5.00 11 Cyclopentasiloxane 5.00 5.00 5.00 5.00 12 Titanium dioxide 3.00 3.00 3.00 3.00 13 Red iron oxide 0.01 0.01 0.01 0.01 14 Tromethamine 0.20 0.20 0.20 0.20 15 Decamethylcyclopentasiloxane 1.00 - 1.00 - 16 Butyl acrylate / methacrylic acid / methyl methacrylate copolymer (cas no. 25035-69-2) 1.00 - - 1.00 17 Phenoxyethanol 0.30 0.30 0.30 0.30 18 Spices Suitable amount Suitable amount Suitable amount Suitable amount

Experimental Example  1: Transparency (turbidity) change by water

The sunscreens of Comparative Examples 1 to 3 and Example 1 were uniformly coated (0.2 mg / cm 2) on a plate of PMMA (polymethylmethacrylate), and after 20 minutes, they were immersed in clean water at 25 ° C for 20 minutes The extent of the washings in water was measured with water turbidity (HAZE). The results are shown in Fig. 1 and Fig.

Referring to FIGS. 1 and 2, it can be seen that the turbidity of the formulation of Example 1 is lower than that of Comparative Examples 1 to 3, and the transparency of Example 1 is the highest. The results are shown in Table 1. The results are shown in Table 1.

Experimental Example  2: Change in ultraviolet blocking value by water

The sunscreens of Comparative Examples 1 to 3 and Example 1 were uniformly coated (0.2 mg / cm 2) on a plate of PMMA (polymethylmethacrylate), and after 20 minutes, they were immersed in clean water at 25 ° C for 20 minutes The in vitro SPF was measured using a UV-2000S analyzer, and the change (%) of ultraviolet blocking was calculated according to the following equation (1). The results are shown in FIG.

As can be seen from FIG. 3, when the rate of change of the ultraviolet cutoff value before and after immersion in water is compared, the change of the ultraviolet cutoff value (SPF) of the formulation of Example 1 is lower than that of Comparative Examples 1 to 3, 1 showed the least change in ultraviolet blocking value.

Experimental Example  3: Transparency (turbidity) change due to oil

(0.2 mg / cm < 2 >) of Comparative Example 1 and Example 1 were uniformly applied to a plate of PMMA (polymethylmethacrylate), 20 minutes later, caprylic / capric triglyceride of 20 After immersing in water for several minutes, the degree of the washed product in the oil was measured, and the result is shown in FIG.

Referring to FIG. 4, the degree of washed out of the components of caprylic / capric triglyceride was visually confirmed. As a result, it was found that the degree of Example 1 was smaller than that of Comparative Example 1, I could see that it did not wash away.

Experimental Example  4: Sensory evaluation

Using the sunscreen of Example 1 and Comparative Examples 1 to 3, ten women aged 25 to 45 years were used in the morning and sensory evaluation was carried out after use.

The comparison items were moisturizing, adhesion, spreadability, stickiness, and feeling immediately after use. The scores were scored from 0 to 5 after each item was rated. The results are shown in Table 2 below.

Moisturizing Adhesion Spreadability Stickiness Feeling Example 1 5 4.5 5 5 5 Comparative Example 1 4 4 3 3 3 Comparative Example 2 4 4 2 One 2 Comparative Example 3 4 4 2 3 3

From the results shown in the above Table 2, the sunscreen of Example 1 showed excellent results in terms of moisture resistance, adhesion, spreadability, stickiness, and feeling.

Claims (10)

An oil-in-water emulsion cosmetic composition comprising an aqueous phase and an oil phase,
Wherein the film forming agent comprises a siloxane polymer and an acrylate copolymer. The composition of claim 1, wherein the siloxane polymer comprises
Wherein the cosmetic composition is one selected from the group consisting of cyclic dimethylsiloxane, methylchlorosilane, phenylchlorosilane, alkoxysilane, aminosilane, fluoroalkylsilane, siloxane oligomer, and combinations thereof. 3. The composition of claim 2, wherein the siloxane polymer comprises
Wherein the cosmetic composition is a cyclic dimethylpolysiloxane. The method of claim 3, wherein the cyclic dimethylpolysiloxane
Wherein the cosmetic composition is one selected from the group consisting of hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, tetraheptamethylcycloheptasiloxane, and combinations thereof. The method of claim 1, wherein the acrylate copolymer comprises
C1-C4 alkyl methacrylate / methacrylic acid copolymer or C1-C4 alkyl methacrylate / methacrylic acid / C2-C10 alkyl acrylate copolymer. The method of claim 5, wherein the acrylate copolymer comprises
Acrylic acid / methacrylic acid copolymer, methyl acrylate / ethyl acrylate / methacrylic acid copolymer, and a combination thereof, in addition to the above acrylic acid / methacrylic acid / butyl acrylate / methacrylic acid / methyl methacrylate copolymer ≪ / RTI > The cosmetic composition according to claim 1, wherein the siloxane polymer is contained in an amount of 0.05 to 10% by weight based on the total weight of the cosmetic composition. The cosmetic composition according to claim 1, wherein the acrylate copolymer is contained in an amount of 0.05 to 10% by weight based on the total weight of the cosmetic composition. The cosmetic composition according to claim 1, wherein the film forming agent is contained in an amount of 0.1 to 20% by weight based on the total weight of the cosmetic composition. The cosmetic composition according to claim 1, wherein the cosmetic composition comprises 100%
i) 0.05 to 10% by weight of an acrylate copolymer, 0.1 to 20% by weight of a polyol, and water,
Ii) an oil phase comprising 0.05 to 10% by weight of a siloxane polymer, 3 to 25% by weight of a powder, 15 to 25% by weight of an ultraviolet screening agent and 5.0 to 50.0% by weight of an oil.

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