KR100891973B1 - O/w formed cosmetic composition for sunscreen containing perflourpolyether derivatives - Google Patents

Abstract

The present invention relates to an O / W type sunscreen cosmetic composition comprising a perfluoropolyether derivative. In particular, the present invention provides an O / W-type sunscreen cosmetic composition comprising a perfluoropolyether derivative having excellent water resistance does not reduce the sunscreen effect by sweat or water, and has a good feeling without stickiness.

UV protection, perfluoropolyether

Description

O / W type sunscreen cosmetic composition containing a perfluoropolyether derivative {O / W FORMED COSMETIC COMPOSITION FOR SUNSCREEN CONTAINING PERFLOURPOLYETHER DERIVATIVES}

[TECHNICAL FIELD OF THE INVENTION]

The present invention relates to an O / W type sunscreen cosmetic composition comprising a perfluoropolyether derivative, and more particularly, the present invention has excellent water resistance and does not reduce the sunscreen effect due to sweat or water, without stickiness. It relates to a sunscreen cosmetic composition having an excellent feeling.

[Private Technology]

Ultraviolet rays irradiated from sunlight act as a major cause of erythema, edema, freckles, and skin cancer on the skin. Recently, many studies on various skin diseases caused by ultraviolet rays have been actively conducted.

In general, ultraviolet rays are classified into UV-C at 200-280 nm, UV-B at 280-320 nm, and UV-A at 320-400 nm. UV-C passes through the ozone layer and disappears without reaching the surface. UV-B penetrates the skin's epidermis, causing erythema, freckles, and edema. UV-A is known to induce skin aging and skin irritation such as penetration into the dermis of the skin to promote skin cancer, wrinkles and melanin formation. Numerous epidemiological studies have demonstrated a strong relationship between sun exposure and human skin cancer, and detailed relationships have been discussed (DeSimone, "Sunscreen and Suntan Products", Handbook of Nonpre-scription Drugs, 7th Ed., Chapter 26, pp 499-). 511, American Pharmaceutical Association, Washington, DC; 1982).

As a result of the above mentioned risks associated with sun exposure, the general public's interest in sunscreen products has increased, and as a result, sunscreen products having various types of sunscreen index (SPF) have been released. The sunscreen products are inorganic sunscreens such as titanium dioxide, zinc oxide and iron oxide or octylmethoxycinnamate, octylsalicylate, octocrylene, butylmethoxydibenzoylmethane, oxybenzone, octyl to have high SPF values. Organic sunscreens such as liazone, menthylanthranilate and 3,4-methylbenzylidene camphor. In addition, according to the manufacturing method of the product, it is divided into O / W emulsion type sunscreen cosmetics and W / O emulsion type sunscreen cosmetics. The advantage of O / W emulsion type sunscreen cosmetics is that it has a good feeling of use but it is easily washed off by sweat or water, so it has a disadvantage of low UV protection effect for a long time (US Patent Publication No. 5204090, US Patent Publication No. 4894222, European Patent). Publication No. 0939615), on the other hand, W / O emulsified sunscreen cosmetics have a strong water resistance to sweat or water, but the use is heavy and greasy, and does not wash well when washing.

In order to solve the above disadvantages of the sunscreen cosmetics, cosmetics technicians are actively researching to improve the usability and water resistance of the sunscreen products (US Patent Publication No. 4731242, European Patent Publication No. 0203929, European Patent Publication No. 0132136). In particular, considering that the sunscreen cosmetics are a product mainly used in the summer with a lot of UV exposure, research has been focused on improving the feeling of use of the water-resistant W / O-type sunscreen cosmetics. On the other hand, studies on strengthening the water resistance of O / W type sunscreen cosmetics have also been conducted, but the effect is insignificant (US Patent Publication No. 5041281, US Patent Publication No. 4917883, US Patent Publication No. 6159452).

In order to solve the problems of the prior art, an object of the present invention is to provide an O / W-type sunscreen cosmetic composition having excellent UV resistance and sustained water resistance.

 In addition, an object of the present invention is to provide an O / W type sunscreen cosmetic composition having a light and long lasting sunscreen effect.

In order to achieve the above object, the present invention provides an O / W type sunscreen cosmetic composition comprising a perfluoropolyether derivative represented by the following formula (1).

(Formula 1)

R ¹ CF ₂ O (CF ₂ O) p (C ₂ F ₄ O) qCF ₂ R ²

In Formula 1, the average molecular weight is 2000, p / q is 0.1 to 10.0, and R ¹ and R ² are each independently, CONHC ₁₈ H ₃₇ , CH ₂ OH and [CH ₂ O (R ³ O) _{n K} P (O) (OH) _{3 K} , wherein R ³ is selected from C ₂ H ₄ A radical or a radical of C ₃ H ₄ , n is 1 to 10 and K is 1 or 2.

Hereinafter, the present invention will be described in detail.

The inventors of the present invention while studying the O / W type sunscreen cosmetic composition that can have a sustained UV blocking effect excellent in water resistance, when containing a perfluoropolyether derivative represented by the formula (1) excellent water resistance and sustained ultraviolet light The present invention was completed by confirming that a blocking effect can be obtained.

O / W type sunscreen cosmetic composition of the present invention comprises a perfluoropolyether derivative represented by the formula (1). In Chemical Formula 1, p / q is preferably 0.5 to 3.0.

The perfluoropolyether derivative may be included in 0.001 to 30% by weight in the sunscreen cosmetic composition. Preferred perfluoropolyether derivative content is 0.1 to 20% by weight. When the content of the perfluoropolyether derivative is less than 0.001% by weight, the water resistance may be reduced and the sunscreen effect may be insignificant. When the content of the perfluoropolyether derivative is more than 30% by weight, the physical properties of the cosmetic composition may be poor or may not be good.

The O / W type sunscreen cosmetic composition of the present invention includes an oil phase part, a sunscreen agent, an emulsifier, and an aqueous phase part in addition to the pofluoropolyether derivative.

The oil phase may be an oily component used in conventional O / W cosmetics, and may be selected from one or more selected from the group consisting of vegetable oils, animal oils, synthetic esters, hydrocarbons, and silicone oils. The content in the cosmetic composition of the oil phase is preferably 1 to 30% by weight. If the content of the oil phase is less than 1% by weight, the physical properties of the composition may be deteriorated, and when it exceeds 30% by weight, the viscosity of the cosmetic composition may be increased.

The sunscreen may be any kind of sunscreen available in conventional cosmetic compositions, and may be used alone or in combination with an organic sunscreen or inorganic sunscreen. The organic sunscreen is composed of octylmethoxycinnamate, octylsalicylate, octocrylene, butylmethoxydibenzoylmethane, oxybenzone, octyltriazone, menthylanthranilate and 3,4-methylbenzylidene camphor It may be selected from one or more, and the inorganic sunscreen may be selected from the group consisting of titanium dioxide, zinc oxide and iron oxide. The organic sunscreen may be included in 1 to 30% by weight in the cosmetic composition, the inorganic sunscreen may be included in 1 to 40% by weight in the cosmetic composition. If the range of the organic sunscreen or inorganic sunscreen is less than the minimum range may be inferior to the sunscreen effect, if the maximum range exceeds the use of the cosmetic composition may worsen.

The emulsifier may include one or more hydrophilic emulsifiers having a HLB (Hydrophile-lipophile Balance) value of 10 or more and one or more lipophilic emulsifiers having a HLB (Hydrophile-lipophile Balance) value of less than 10. The mixing ratio is preferably 0.1 to 10.0 weight ratio. The emulsifier may be included in 1 to 10% by weight in the cosmetic composition. When the content of the emulsifier is less than 1% by weight, the stability of the cosmetic composition may be low, and when it exceeds 10% by weight, it may be uneconomical.

The water phase part may be selected from one or more selected from the group consisting of purified water, propylene glycol, 1,3-butylene glycol, glycerin, betaine and sorbitol, and may be included in the cosmetic composition as a residual amount.

In addition, O / W type sunscreen cosmetic composition of the present invention may further comprise a thickener, preservatives, flavoring, coloring or other additives. The thickener may be all kinds of thickeners used in conventional cosmetic compositions, and preferably may be selected from the group consisting of metal silicate, Santa gum and carbomo. The content of the thickener in the cosmetic composition is preferably 0.01 to 30% by weight.

  Hereinafter, examples of the present invention will be described. The following examples are only for illustrating the present invention and the present invention is not limited to the following examples.

Examples 1 to 3 and Comparative Example 1

To prepare a sunscreen emulsion in the composition of Table 1.

The oil phase and the water phase were each prepared at 70 ° C. to 80 ° C. and then mixed, cooled to 50 ° C. or less, and then mixed with the fragrance and the additives. The perfluoropolyether derivatives were then added to the water phase or oil phase depending on the reactor.                     

Example 1 Example 2 Example 3 Comparative Example 1 Awards Purified water To 100 To 100 To 100 To 100 glycerin 2.0 2.0 2.0 2.0 Propylene glycol 3.0 3.0 3.0 3.0 Butylene glycol 5.0 5.0 5.0 5.0 Xanthan Gum 0.1 0.1 0.1 0.1 Yu Sang Hexyllaurate 3.0 3.0 3.0 3.0 Cyclomethicone 12.0 12.0 12.0 12.0 Glyceryl Stearate / Sebum 100 Stearate 1.0 1.0 1.0 1.0 Fiji 30 dipolyhydrocystearate 1.0 1.0 1.0 1.0 Polysorbate 60 2.0 2.0 2.0 2.0 Perfluoropolyether (PFPE) Derivatives PFPE phosphate 2.0 - - - PFPE Stearylamide - 2.0 - - PFPE alcohol - - 2.0 - Sunscreen Octylmethoxycinnamate 5.0 5.0 5.0 5.0 Octocrylene 2.0 2.0 2.0 2.0 Ultrafine Titanium Dioxide 5.0 5.0 5.0 5.0 additive incense Quantity Quantity Quantity Quantity antiseptic Quantity Quantity Quantity Quantity

Experimental Example 1: Effect of Maintaining Sunscreen Content

For 20 women aged 20 to 40 years, the O / W type sunscreen cosmetic composition according to Examples 1 to 3 and Comparative Example 1 was 100 mg (ultraviolet blocker) in an area of 50 cm ² on both forearms of the test subjects. Content: 12 mg) was applied and dried for 20 minutes. One forearm was immersed in clean water at 25 ° C. for 40 minutes, and then dried again for 20 minutes, and then subjected to quantitative analysis by removing cosmetics from the forearm using ethanol. Table 2 shows the results of the sunscreen content remaining on the water-immersed and non-immersed arms.

Example 1 Example 2 Example 3 Comparative Example 1 Submerged arm in water 11.12 11.59 11.48 4.22 Arms not submerged in water 11.93 11.91 11.80 11.90 ratio 93.2% 97.3% 97.2% 35.4%

In Table 2, the residual ratio of the sunscreen of the sunscreen cosmetic composition of Examples 1 to 3 was as high as 90% or more, Comparative Example 1 is confirmed to be low as 35.4%. That is, the sunscreen cosmetic composition of the present invention containing a pofluoropolyether derivative is excellent in water resistance and is not washed out by water after application, whereas Comparative Example 1, which does not include a perfluoropolyether derivative, is easily washed by water. I can see the exit.

Experimental Example 2: Evaluation of Water Resistance

100 mg of the O / W type sunscreen cosmetic composition according to Examples 1 to 3 and Comparative Example 1 was applied to Vitroskin in an area of 50 cm ² , dried for 20 minutes, and then reciprocated in clean water at 25 ° C. Immersion for 40 minutes while letting. After drying for 20 minutes, SPF was measured in vitro before and after immersion using the SPF290s analyzer. The results are shown in Table 3.

Example 1 Example 2 Example 3 Comparative Example 1 Rate (Invitro SPF after immersion / Invitro SPF before immersion) 0.93 ± 0.02 0.96 ± 0.01 0.97 ± 0.02 0.40 ± 0.02

In the above Table 3, the sunscreen cosmetic composition of Examples 1 to 3 containing a perfluoropolyether derivative is maintained at 90% or more in vitro SPF value when submerged in water, but does not contain a perfluoropolyether derivative In Comparative Example 1, when compared to before and after immersion in water, it can be seen that the infra SPF value is 40% and the UV protection index drops relatively much. That is, by adding a perfluoropolyether derivative to prepare an O / W emulsion type sunscreen cosmetic composition, the sunscreen effect is hardly inhibited by water or sweat, and continuous sunscreen effect can be expected.

Experimental Example 3: Feeling of the sunscreen cosmetic composition

 50 women aged between 20 and 40 years of age should apply makeup with O / W type sunscreen cosmetics according to Examples and Comparative Examples. Persistent effects were evaluated. Table 4 shows the results of sensory evaluation. Sensory evaluation is performed based on the criteria of very good (5 points), excellent (3 points), moderate (0 points), bad (-3 points), very bad (-5 points), and the rating is given in the following formula 1 Calculated accordingly.

(Calculation 1)

Rating = {(Number of very rated x 5) + (Number of rated very good x 3) + (Normally rated x 0) + (Number of rated poor x (-3)) + (Number of people rated very bad x (-5))} / number of people rating

Example 1 Example 2 Example 3 Comparative Example 1 Freshness 3.9 3.8 3.0 2.3 Bundle 4.0 4.3 4.8 3.0 UV protection lasting effect 4.2 4.1 4.0 2.1 Overall satisfaction 4.03 4.06 3.93 2.46

In Table 4, the cosmetic composition of Examples 1 to 3 prepared by the addition of a perfluoropolyether derivative was superior in the freshness, the feeling of lubrication, etc. It was excellent too. When the emulsified by the addition of a perfluoropolyether derivative, it is believed that a thin film is formed upon application to the skin to uniformly distribute the sunscreen and significantly improve the greasy and sticky feeling of the sunscreen.

As mentioned above, the O / W type sunscreen cosmetic composition of the present invention is excellent in water resistance, the sunscreen effect is not reduced by sweat or water, and has a good feeling without stickiness.

Claims (2)

O / W sunscreen cosmetic composition, A sunscreen cosmetic composition comprising a perfluoropolyether derivative represented by the following formula (1): (Formula 1) R ¹ CF ₂ O (CF ₂ O) p (C ₂ F ₄ O) qCF ₂ R ² In Formula 1, the average molecular weight is 2000; p / q is 0.1 to 10.0; R ¹ and R ² are each independently selected from the group consisting of CONHC ₁₈ H ₃₇ , CH ₂ OH and [CH ₂ O (R ³ O) _n ] _K P (O) (OH) _3K , where R ³ is C ₂ H ₄ A radical or a radical of C ₃ H ₄ , n is 1 to 10 and K is 1 or 2. The composition of claim 1, wherein the perfluoropolyether derivative is included in the cosmetic composition in an amount of 0.001 to 30% by weight.