KR20150071133A - Oil in water in oil cosmetic composition for UV protection - Google Patents

Abstract

The present invention relates to a water-in-oil-in-water (W/O/W) type cosmetic UV protection composition. More specifically, the W/O/W type cosmetic UV protection composition can ensure high water resistance and UV shielding performance by stabilizing the bis-ethylhexyloxyphenol methoxyphenyltriazine having an internal oil in a non-continuous phase with methoxy PEG-114 polyepsilon caprolactone.

Description

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

The present invention relates to a cosmetic composition for protecting against ultraviolet rays in a water-in-oil type, and more particularly, to a cosmetic composition for protecting ultraviolet rays in a water-in-oil type. More specifically, the present invention relates to a cosmetic composition, The present invention relates to a water-in-oil type cosmetic composition which stabilizes Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine to ensure high UV blocking power and water resistance.

The ultraviolet rays emitted from the sunlight are a major cause of causing erythema, edema, freckles and skin cancer in the skin. Recently, many studies on various skin diseases caused by ultraviolet rays have been actively conducted.

Generally, ultraviolet rays are classified into UV-C at a wavelength of 240 to 290 nm, UV-B at a wavelength of 290 to 320 nm, and UV-A at a wavelength of 320 to 400 nm. UV-C passes through the ozone layer and disappears without reaching the surface. UV-B penetrates into the epidermis of the skin, causing erythema, freckles and edema. UV-A penetrates the skin's dermis and is known to promote skin aging and skin irritation by promoting skin cancer, wrinkles and melanin formation. As a result, interest in the UV protection products of the general public has increased considerably and, as a result, there are a variety of sunscreen products with SPF (UVB ultraviolet barrier index) and PA (UVA ultraviolet barrier index) on the market.

Especially, bisethylhexyloxyphenol methoxyphenyltriazine is a main component of a typical ultraviolet screening composition and is used in various cosmetics for ultraviolet screening. In the case of Hera Sunmate Lepotz product launched in 2014, bisethylhexyloxyphenol methoxyphenyl triazine 2.0% by weight. However, bisethylhexyloxyphenol methoxyphenyltriazine has poor solubility in oil phase and is liable to precipitate as crystals. In particular, in the case of a water-in-oil type cosmetic composition having excellent water resistance, bis-ethylhexyloxyphenol methoxyphenyl There is a problem that these are combined and precipitated because of the presence of triazine.

Korean Patent Publication No. 2007-0106080 (published on November 11, 2007)

Accordingly, the present inventors have made efforts to develop a cosmetic composition for ultraviolet ray shielding which has high ultraviolet shielding power and water resistance while containing bishexylhexyloxyphenol methoxyphenyltriazine. As a result, it has been found that bis-ethylhexyloxyphenol methoxyphenyltriazine A water-in-oil type cosmetic composition capable of preventing the precipitation of bis-ethylhexyloxyphenol methoxyphenyltriazine and securing a high ultraviolet shielding power and water resistance when containing methoxypigi-114 polyepsilon caprolactone, which is a surfactant, And the present invention has been completed.

Accordingly, an object of the present invention is to stabilize bis-ethylhexyloxyphenol methoxyphenyltriazine in an inner oil phase, which is a non-continuous phase, by containing methoxypiperazine-114 polyepsilon caprolactone and to provide a water-in-oil type To provide a cosmetic composition.

In order to achieve the above object, the present invention provides a cosmetic composition for in-water type ultraviolet screening which is obtained by stabilizing bisethylhexyloxyphenol methoxyphenyltriazine in an inner oil phase containing disaccharide-114 polyepsilon caprolactone, .

The cosmetic composition for underwater in-water type ultraviolet shielding according to the present invention can solve the problem that conventional bisethylhexyloxyphenol methoxyphenyltriazine is precipitated in the oil phase, while securing high ultraviolet blocking power and water resistance.

The present invention provides a cosmetic composition for water-in-oil type ultraviolet rays that contains methoxypigi-114 polyepsilon caprolactone and stabilizes bisethylhexyloxyphenol methoxyphenyltriazine in an inner oil phase which is a non-continuous phase.

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

The methoxypiperazine-114 polyepsilon caprolactone used in the present invention has an amphiphilic structure with both lipophilic and hydrophilic moieties. Therefore, in a water-in-oil type composition, at a high temperature, it is located at the interface between the water-soluble components of the inner oil phase containing the ultraviolet absorber and the water phase, and becomes a solid state at a temperature below the melting point so that the inner oil phase, To prevent precipitation of bisethylhexyloxyphenol methoxyphenyltriazine. In particular, the methoxypiperidine-114 polyepsilon caprolactone has a molecular weight of 1,000 to 15,000 and thus forms a thick interfacial film. Therefore, it has an excellent effect of preventing the internal oil phase from aggregating and coalescing. Thus, bisethylhexyloxyphenol methoxyphenyl triazine It is possible to maintain a stable state in the inner phase of the continuous phase.

The cosmetic composition for UV screening according to an embodiment of the present invention may contain 0.1 to 10.0% by weight, preferably 0.2 to 5.0% by weight, of methoxypigi-114 polyepsilon caprolactone based on the total weight of the composition, ≪ / RTI > When the methoxypiperidine-114 polyepsilon caprolactone is contained in an amount of less than 0.1% by weight, the interfacial film is not sufficiently thick so that the inner oil phase in which bis-ethylhexyloxyphenol methoxyphenyltriazine is dissolved is combined to form a continuous oil phase Therefore, bisethylhexyloxyphenol methoxyphenyltriazine may be precipitated. When it is contained in an amount of 10.0% by weight or more, it is not suitable for producing a stable water-in-oil type cosmetic composition.

The UV-blocking cosmetic composition according to an embodiment of the present invention may contain 0.1 to 10.0% by weight, preferably 1.0 to 8.0% by weight, of bishexylhexyloxyphenol methoxyphenyltriazine based on the total weight of the composition ≪ / RTI > When the bisethylhexyloxyphenol methoxyphenyltriazine is contained in an amount of less than 0.1% by weight, it is difficult to expect an ultraviolet blocking effect. When the amount of the bisethylhexyloxyphenol methoxyphenyl triazine is more than 10.0% by weight, it's difficult.

The water-in-oil type ultraviolet blocking cosmetic composition according to the present invention may further comprise an ultraviolet absorber commonly used in the art together with bishexyloxyphenol methoxyphenyltriazine, and more specifically octylmethoxy cinnamate cinnamate derivatives such as octyl methoxycinnamate and isoamyl-p-methoxycinnamate; Salicylic acid derivatives such as butylmethoxy dibenzoylmethane and octyl salicylate; PABA (paminobenzoicacid) derivatives; Benzophenones; And anthranilates. The ultraviolet absorber may be at least one selected from the group consisting of anthranilates and anthranilates.

The ultraviolet absorber may be contained in an amount of 5.0 to 50.0% by weight, more preferably 10.0 to 30.0% by weight, based on the total weight of the composition. When the ultraviolet absorber is contained in an amount less than 5.0 wt%, it is difficult to expect an ultraviolet shielding effect. When the ultraviolet absorber is contained in an amount exceeding 50.0 wt%, it is difficult to produce a stable in-water type cosmetic composition.

In addition, the cosmetic composition for in-water type ultraviolet ray blocking according to the present invention may further contain an ultraviolet screening agent commonly used in the art. The ultraviolet light blocking agent may be a powdery form such as zinc oxide (ZnO), titanium oxide (TiO ₂ ), silicate and talc. The powder may contain 0.1 to 10.0% by weight, more preferably 0.15% To 9.0% by weight. When the ultraviolet screening agent is contained in an amount less than 0.1% by weight, ultraviolet ray shielding effect is difficult to be expected. When the ultraviolet screening agent is contained in an amount exceeding 10.0% by weight, it is difficult to produce a stable in- have.

In addition, the cosmetic composition for UV-screening in water underwater according to the present invention may contain other components such as oils, surfactants, moisturizers, thickeners, fragrances, powders, pigments, preservatives, Stabilizers, and the like.

A method for preparing a water in-oil type cosmetic composition containing the above components is as follows. Methoxypiperidine-114 polyepsilon caprolactone, bisethylhexyloxyphenol methoxyphenyltriazine, ultraviolet absorber, and other lipid components were dissolved in a separate container at 70 to 80 ° C by heating and then dispersed with a homogenizer to obtain an inner oil-based mixture . The water component is heated to dissolve at 65 to 75 ° C and then the inner oil phase mixture is slowly added to the water phase component and the inner oil phase particles are formed at 65 to 75 ° C through a homogenizer to form an inner oil phase particle to prepare an underwater type cosmetic composition. Then, the above-mentioned underwater type cosmetic composition is slowly added to an external oil-based mixture in which a UV absorbent, an ultraviolet ray blocking agent and other lipid components are dispersed in a separate container with a homogenizer, and the water-in-oil type cosmetic composition is once again prepared using a homogenizer. Through this process, a cosmetic composition for in-water type UV-screening in which the bis-ethylhexyloxyphenol methoxyphenyltriazine according to the present invention is stabilized in the inner oil phase through methoxypiperidine-114 polyepsilon caprolactone can be obtained.

Hereinafter, the present invention will be described in more detail by way of examples and comparative examples, but the scope of the present invention is not necessarily limited to these examples.

[ Manufacturing example  1] Preparation of ultraviolet screening composition

Examples 1, 2, and 6 to 9, which are in-water type UV blocking compositions, and Comparative Examples 3 to 5, which are water-in-oil type UV blocking compositions, were prepared with the compositions shown in Tables 1 and 2 below (Unit: weight%).

Example 1 was such that 3.0 wt% of bisethylhexyloxyphenol methoxyphenyltriazine and 1.0 wt% of methoxypigi-114 polyepsilon caprolactone were contained relative to the total weight of the composition and 13.0 wt% of the ultraviolet screening agent Concretely, 7 wt% of ethylhexylmethoxycinnamate, 3 wt% of ethylhexylsalicylate, 3 wt% of isoamyl p-methoxy cinnamate), and 2.0 wt% of titanium oxide as an ultraviolet absorber Type composition.

Comparative Example 1 contained bismethylhexyloxyphenol methoxyphenyltriazine in the same amount as in Example 1, ultraviolet absorber and ultraviolet screening agent, but instead of Methoxypigi-114 polyepsilon caprolactone, 1.0 mg % Water-in-oil type composition was prepared.

Comparative Example 2 was prepared in the same manner as in Example 1 except that bisethylhexyloxyphenol methoxyphenyltriazine, a water-in-oil type composition containing an ultraviolet absorber and an ultraviolet screening agent but not containing methoxyphenyl-114 polyepsilon caprolactone was prepared Respectively.

Comparative Examples 3 to 4 were prepared in the same manner as in Example 1 and Comparative Examples 1 and 2 except that the components were the same as in Example 1 and Comparative Examples 1 to 2, A water-in-oil type composition free of polyepsilon caprolactone or PGE-100 stearate was prepared.

Comparative Examples 6 to 7 prepared water-in-oil type compositions by varying the content of methoxypiperidine-114 polyepsilon caprolactone, Comparative Examples 8 to 9 varied the content of bisethylhexyloxyphenol methoxyphenyltriazine A water-in-oil type composition was prepared.

ingredient Example 1 Comparative Example 1 Comparative Example 2 Comparative Example
3 Comparative Example
4 Comparative Example
5 inside
Oil component Methoxypiperazine-114 polyepsilon caprolactone One - - - - - FAGE -100 stearate - One - - - - Bisethylhexyloxyphenol methoxyphenyltriazine 3 3 3 - - - Ethyl hexylmethoxycinnamate 7 7 7 - - - Water component Purified water To 100 To 100 To 100 To 100 To 100 To 100 EDTA-2Na 0.02 0.02 0.02 0.02 0.02 0.02 glycerin 5 5 5 5 5 5 Phenoxyethanol 0.3 0.3 0.3 0.3 0.3 0.3 Out
Paid
ingredient Methoxypiperazine-114 polyepsilon caprolactone - - - One - - FAGE -100 stearate - - - - One - Bisethylhexyloxyphenol methoxyphenyltriazine - - - 3 3 3 Ethyl hexylmethoxycinnamate - - - 7 7 7 Ethylhexyl salicylate 3 3 3 3 3 3 Isoamyl p-methoxy cinnamate 3 3 3 3 3 3 Lauryl phage-9 polydimethylsiloxy ethanedimethicone 3 3 3 3 3 3 Cyclopentasiloxane 15 15 15 15 15 15 C12-15 alkyl benzoate 2 2 2 2 2 2 Titanium oxide 2 2 2 2 2 2 Silica 2 2 2 2 2 2

ingredient Comparative Example 6 Comparative Example 7 Comparative Example 8 Comparative Example
9 inside
Oil component Methoxypiperazine-114 polyepsilon caprolactone 0.05 15 One One FAGE -100 stearate - - - - Bisethylhexyloxyphenol methoxyphenyltriazine 3 3 0.05 15 Ethyl hexylmethoxycinnamate 7 7 7 7 Water component Purified water To 100 To 100 To 100 To 100 EDTA-2Na 0.02 0.02 0.02 0.02 glycerin 5 5 5 5 Phenoxyethanol 0.3 0.3 0.3 0.3 Out
Paid
ingredient Methoxypiperazine-114 polyepsilon caprolactone - - - - FAGE -100 stearate - - - - Bisethylhexyloxyphenol methoxyphenyltriazine - - - - Ethyl hexylmethoxycinnamate - - - - Ethylhexyl salicylate 3 3 3 3 Isoamyl p-methoxy cinnamate 3 3 3 3 Lauryl phage-9 polydimethylsiloxy ethanedimethicone 3 3 3 3 Cyclopentasiloxane 15 15 15 15 C12-15 alkyl benzoate 2 2 2 2 Titanium oxide 2 2 2 2 Silica 2 2 2 2

<Manufacturing Method of Example 1, Comparative Examples 1 and 2 and Comparative Examples 6 to 9>

The inner oil phase components of Example 1, Comparative Examples 1 and 2 and Comparative Examples 6 to 9 of Table 1 were heated to 75 DEG C and uniformly dissolved and mixed. The aqueous phase components were heated to 70 DEG C and uniformly Dissolved and mixed, and the mixture of the inner oil phase components was added to the above water phase component mixture with stirring to prepare an underwater type mixture. Then, the mixture was heated separately at 70 DEG C to uniformly dissolve and mix the mixture into an external oil component, and the mixture was stirred under stirring to finally produce a water-in-oil type composition.

 &Lt; Production methods of Comparative Examples 3 to 5 >

The aqueous phase components in Table 1 were heated to 75 DEG C to uniformly dissolve and mix, and the external oil phase components were heated to 70 DEG C to uniformly dissolve and mix, and the aqueous phase mixture was added to the external oil phase mixture under stirring A water-in-oil type composition was prepared.

[ Test Example  One] Bisethylhexyloxyphenol Of methoxyphenyltriazine  Stability evaluation

The degree of precipitation of bisethylhexyloxyphenol methoxyphenyltriazine was evaluated in order to confirm stability and long-term stability of the composition according to the present invention at high temperature. Each of the compositions of Example 1 and Comparative Examples 1 to 9 was placed in a transparent plastic bottle having a capacity of 100 ml in an amount of 60 ml at 25 ° C. and 45 ° C. for 4 weeks. After 1 week and 4 weeks, bisethylhexyl The degree of precipitation of oxyphenol methoxyphenyltriazine was evaluated. The results are shown in Table 3 below.

Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8 Comparative Example 9 25 ℃ (1 week) O Δ Δ Δ Δ X X Δ O X 25 ℃ (4 weeks) O X X X X X X X O X 45 ° C (1 week) O Δ X Δ X X X X O X 45 ° C (4 weeks) O X X X X X X X O X O: No precipitation of bisethylhexyloxyphenol methoxyphenyltriazine was observed.
Δ: Bis-ethylhexyloxyphenol methoxyphenyl triazine was slightly precipitated.
X: Bisethylhexyloxyphenol methoxyphenyltriazine completely precipitated.

As shown in the results of the above Table 3, in the case of the composition for protecting ultraviolet rays containing bisethylhexyloxyphenol methoxyphenyltriazine, a water-in-oil type composition containing 1.0% by weight of methoxypigi-114 polyepsilon caprolactone Example 1) In addition to a water-in-oil type composition (Comparative Example 8) containing bis-ethylhexyloxyphenol methoxyphenyltriazine in a small concentration of 0.05% by weight, it is possible to prevent precipitation of bishexyloxyphenol methoxyphenyltriazine I could not. Thus, it was confirmed that a stable interfacial film was formed between the inner oil phase and the water phase by containing methoxypiperazine-114 polyepsilon caprolactone, so that bisethylhexyloxyphenol methoxyphenyltriazine could be stably dissolved in the inner oil phase which is a noncontinuous phase Respectively.

[ Test Example  2] Measurement of ultraviolet shielding index

In order to measure the UV-blocking index of Example 1 and Comparative Examples 1 to 9 of Preparation Example 1, 12 subjects of 6 men and 6 women were excluded from the spinal region, Irradiated with a solar simulator (81293 (Xenon UV Lamp 1KW, unfiltered)) lamp adjusted to 20-100 mj / cm 2 using an IL1733 Radiometer and an SED 240 probe, (Minimal Erythema Dose; MED) was confirmed at the time point. In addition, the sample was uniformly applied to the same region of the subject such as a thickness of 2 mu L / cm &lt; 2 &gt; at a thickness of 2 mu L / cm2 in Example 1 and Comparative Examples 1 to 9, , An ultraviolet ray window was attached and fixed on the sample application site, and ultraviolet rays were irradiated to other portions except for the irradiation window by cutting off ultraviolet rays using leather and a towel. The minimum erythema was determined after 24 hours of ultraviolet irradiation, and the ultraviolet blocking effect was calculated according to the following equation (1). SPF 50 was used as the minimum erythema level of the test subjects, SPF 15-40 was used as the test sample, and the dose was gradually increased as the dose was increased.

Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8 Comparative Example 9 SPF (average) 52.6 50.9 49.6 50.6 49.8 48.6 46.9 49.8 25.6 53.9

As shown in Table 4, it was confirmed that Comparative Examples 1 to 7 exhibited UV blocking indexes similar to those of Example 1 because they contain the same amount of UV blocking agent as in Example 1. However, Comparative Example 8 in which the content of bis-ethylhexyloxyphenol methoxyphenyltriazine was low has a relatively low UV blocking index. That is, when combined with the results of Test Example 1, a water-in-oil type composition composition (Example 1) containing methoxypiperidine-114 polyepsilon caprolactone maintains a UV blocking effect similar to that of the compositions of Comparative Examples 1 to 9 And at the same time stabilizing bis-ethylhexyloxyphenol methoxyphenyltriazine. Further, in Comparative Example 8, which contained bismethylhexyloxyphenol methoxyphenyltriazine in the content range of the present invention in Test Example 1, the stability of bisethylhexyloxyphenol methoxyphenyltriazine was excellent, It was confirmed that the ultraviolet shielding effect was remarkably low.

[ Test Example  3] Water resistance measurement

In order to confirm the water resistance of the composition according to the present invention, according to the in vitro water resistance SPF measurement system of the sun protection agent of Korean Patent Publication No. 2007-0106080, and the SPF measurement method using the theory, Were measured. The composition of Example 1 and Comparative Examples 1 to 9 prepared in Preparation Example 1 was applied to a Vitro Skin (Bio Skin Plate, Beaulax, co., LTD) at 2 mg / The SPF _wet was measured after immersion in water after the UV blocking agent was lost by the blocking ability (SPF _dry ) and immersion. Then, the SPF _dry and the SPF _wet were compared and the water resistance was determined according to the following Equation 2. The results are shown in Table 5 below.

Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8 Comparative Example 9 SPF (average) 76.5 70.6 72.9 71.6 73.8 74.2 74.3 70.9 72.9 73.0

In the case of the water-in-oil type compositions of Example 1, Comparative Examples 1 and 2 and Comparative Examples 6 to 9, the same results as in the case of the water-in-oil type compositions of Comparative Examples 3 to 5, Value was maintained and it was confirmed that the water resistance was given.

Claims (8)

A water-in-oil type UV-blocking cosmetic composition comprising methoxypiperidine-114 polyepsilon caprolactone and bis-ethylhexyloxyphenol methoxyphenyl triazine. The cosmetic composition according to claim 1, wherein the methoxypiperidine-114 polyepsilon caprolactone is contained in an amount of 0.1 to 10% by weight based on the total weight of the composition. The cosmetic composition according to claim 1, wherein the bis-ethylhexyloxyphenol methoxyphenyltriazine is contained in an amount of 0.1 to 10% by weight based on the total weight of the composition. The composition of claim 1, which is selected from the group consisting of cinnamate derivatives selected from octyl methoxycinnamate and isoamyl-p-methoxycinnamate; Salicylic acid derivatives selected from butylmethoxy dibenzoylmethane and octyl salicylate; PABA (p-aminobenzoic acid) derivatives; Benzophenones; And at least one ultraviolet absorber selected from the group consisting of anthranilates and anthranilates. The cosmetic composition according to claim 4, wherein the ultraviolet absorbent is contained in an amount of 5.0 to 50.0% by weight based on the total weight of the composition. The cosmetic composition according to claim 1, further comprising an ultraviolet screening agent. The cosmetic composition according to claim 6, wherein the ultraviolet screening agent is contained in an amount of 0.1 to 10.0% by weight based on the total weight of the composition. The cosmetic composition according to claim 6, wherein the ultraviolet screening agent is at least one selected from the group consisting of zinc oxide (ZnO), titanium oxide (TiO ₂ ), silicate and talc.