KR102133953B1 - Cosmetic composition for blocking infrared ray and uv ray - Google Patents

Abstract

The present invention relates to a cosmetic composition for blocking UV and infrared rays, comprising an inorganic powder mixture of zinc oxide, titanium dioxide, cerium oxide and glass powder, and having transparent application properties. The cosmetic composition according to the present invention includes the inorganic powder mixture and thus has maximum UV and infrared blocking efficiency, thereby suppressing skin aging and skin problems, protecting the skin from solar heat and sunlight, and being applied transparently without cloudiness.

Description

Cosmetic composition for blocking ultraviolet rays and infrared rays {COSMETIC COMPOSITION FOR BLOCKING INFRARED RAY AND UV RAY}

The present invention relates to a cosmetic composition for blocking ultraviolet and infrared rays, which includes an inorganic powder mixture of zinc oxide, titanium dioxide, cerium oxide, and glass powder, and has a transparent spread property without clouding.

The skin has primary and cosmetic functions that protect our body from the external environment. In addition, cosmetic products are intended to protect human skin from aesthetic functions and harmful environments that clean or beautifully express human skin. The role of the skin declines due to various harmful environments (ultraviolet rays, increased dose, air pollution, stress, etc.).Cosmetics are used for various types of skin caused by highly reactive free radicals, free radicals and peroxides generated by these harmful factors. It not only improves trouble, but also protects the skin and helps the skin maintain its normal functions.

Skin aging can be largely divided into endogenous aging and photoaging. Endogenous aging refers to an inevitable aging phenomenon as time goes by, and photoaging refers to the aging phenomenon observed on the skin of the face, hands, back of the neck, etc. that has been exposed for a long time by environmental factors such as sunlight, cold, and wind. Speak. Although photoaging is deeply related to skin changes such as rough wrinkles, pigmentation, loss of skin elasticity, and skin cancer compared to endogenous aging, avoiding exposure to UV rays can prevent this. When the temperature of the skin increases due to external factors such as ultraviolet rays and infrared rays, various enzymes in the skin are affected, which may cause skin redness, skin dryness, and skin cell damage. In order to stay healthy, it is necessary to eliminate these external and internal factors.

Various cosmetic compositions have been developed to block ultraviolet rays or infrared rays. In order to block ultraviolet rays, inorganic sunscreens are used, and inorganic sunscreens are substances having the principle of blocking or refracting or reflecting light due to their physical properties, which inevitably has a problem of clouding.

Korean Registered Patent No. 10-1148427 has been proposed for a powder manufacturing method that simultaneously blocks infrared rays and ultraviolet rays, and a cosmetic composition containing the same. However, it is clear that the powder causes limitations when applied to the skin, and has limited use in cosmetics due to its stiffness and usability.

Accordingly, the present inventors conducted additional studies on conventional inorganic powders capable of controlling these phenomena in order to prevent and improve the aging phenomenon on the skin due to an increase in skin temperature caused by ultraviolet rays, infrared rays, and the like. The present inventors apply transparently without clouding when applied to the skin compared to cosmetic products containing the existing inorganic powder, have excellent UV and infrared blocking effect, and have an excellent effect of preventing skin aging caused by UV rays or infrared rays. The powder mixture was confirmed to complete the present invention. An object of the present invention is to provide a cosmetic composition comprising an inorganic powder mixture in which the whitening phenomenon, which is one of the limitations of the conventional inorganic sunscreen, is mitigated.

The present invention relates to a cosmetic composition for blocking ultraviolet and infrared rays comprising an inorganic powder mixture of zinc oxide, titanium dioxide, cerium oxide and glass powder.

Preferably, the cosmetic composition comprises the zinc oxide 1 to 20% by weight, the titanium dioxide 1 to 10% by weight, the cerium oxide 1 to 10% by weight and the glass powder 1 to 10% by weight relative to the total weight of the cosmetic composition Can.

In addition, preferably, the inorganic powder mixture may be included in 4 to 50% by weight based on the total weight of the cosmetic composition.

In addition, preferably, the inorganic powder mixture may be mixed with zinc oxide, titanium dioxide, cerium oxide, and glass powder in a weight ratio of 10 to 15:3 to 5:1 to 3:1 to 3.

The cosmetic composition of the present invention improves transparency through an optimal sum of the inorganic powder component, and at the same time blocks ultraviolet rays and blocks infrared rays, thereby lowering the temperature of the skin to prevent skin aging due to heat.

Can prevent skin aging.

1 is a graph showing the results of ultraviolet light measurement of a cosmetic composition comprising an inorganic sunscreen.
Figure 2 is a graph showing the infrared blocking measurement results of a cosmetic composition comprising an inorganic sunscreen.
Figure 3 is a graph showing the results of the infrared cut measurement of the cosmetic composition according to the present invention.

All technical terms used in the present invention, unless defined otherwise, have the following definitions and conform to the meaning as commonly understood by those skilled in the art in the relevant field of the present invention. In addition, although a preferred method or sample is described herein, similar or equivalent ones are included in the scope of the present invention.

The term “about” means 30, 25, 20, 15, 10, 9, 8, 7, 6, 5, for reference amount, level, value, number, frequency, percent, dimension, size, amount, weight or length It means a quantity, level, value, number, frequency, percentage, dimension, size, quantity, weight or length that varies by 4, 3, 2 or 1%.

Throughout this specification, the terms "comprises" and "comprising", unless the context requires otherwise, include the steps or components presented, or a group of steps or components, but any other steps or components, or It should be understood that it implies that a group of steps or components is not excluded.

The present invention relates to a cosmetic composition capable of blocking ultraviolet and infrared rays simultaneously, including an inorganic powder mixture of zinc oxide, titanium dioxide, cerium oxide, and glass powder. The present invention provides a cosmetic composition for blocking ultraviolet and infrared rays, which contains a large amount of an inorganic powder mixture of cerium oxide, titanium dioxide, zinc oxide, and glass powder, and has a transparent effect without cloudiness when applied to the skin.

The cloudiness phenomenon is a general characteristic of a cosmetic composition containing an inorganic powder, and in the present invention, it is improved in usability and transparency by mixing cerium oxide and glass powder in a specific ratio together with titanium dioxide and zinc oxide, which are known as inorganic powders. It is characterized by.

The inorganic powder mixture used in the present invention includes zinc oxide, titanium dioxide, cerium oxide and glass powder. It is preferable that the inorganic powder mixture is mixed with zinc oxide, titanium dioxide, cerium oxide, and glass powder in a weight ratio of 10 to 15:3 to 5:1 to 3:1 to 3.

The zinc oxide used in the present invention is a compound of oxygen and zinc made from a powder refined by burning and heating an ore called zincide in a natural state. It is an inorganic oxide (zinc oxide) inert mineral component that does not dissolve in water and has a white color. It is often used as a thickening agent, whitening agent, lubricant, and sunscreen agent. Zinc oxide blocks UVA and UVB at the same time by reflecting sunlight, and scatters visible light to prevent skin cell damage and prevent skin aging. It has an immediate blocking effect when used on skin and has the advantage that it can be used stably compared to chemical sunscreens. It has better blocking ability against UVA than titanium dioxide and protects a wide range of areas as a sunscreen, but also has a disadvantage of relatively low blocking ability, so it is usually used in combination with titanium dioxide.

Titanium dioxide applied to the present invention is also called titanium dioxide as one of the physical sunscreen components along with zinc oxide, and is an inert mineral component made from minerals obtained from three types of brookite, anatase, and rutile, and has a white powder form. . Often used as UV absorber, but also used as an opaque agent, pigment, coloring, and discoloration prevention. Titanium dioxide is permitted as a sunscreen ingredient in all countries and can be applied up to a maximum of 25%. Titanium dioxide blocks skin penetration of ultraviolet rays by physical scattering, has a higher blocking rate than zinc oxide, has excellent scattering effects in the UVA and UVB regions (290nm to 340nm), and also blocks light in the visible region, preventing skin cell damage. It has the function of giving and preventing skin aging. It has an immediate blocking effect when used on skin and has a long lasting blocking effect because it is more stable than chemical sunscreen. When used in combination with the above-mentioned zinc oxide, it has a synergistic effect and adds a sunscreen effect.

Cerium oxide used in the present invention is an oxide of rare earth metal cerium, also called cerium dioxide or cerium oxide, and is a pale yellow-white powder having the formula CeO ₂ . Cerium occurs naturally as a mixture of major ore borenaesite and other rare earth elements in monazite. After the metal ions have been extracted with an aqueous base, the Ce mixture is separated by adding an oxidizing agent and adjusting the pH. Cerium (IV) oxide is formed by firing cerium oxalate or cerium hydroxide. Cerium is also cerium(III) oxide, Ce ₂ O ₃ , which is unstable and will oxidize to cerium(IV) oxide. In the present invention, cerium oxide is used to limit the temperature rise of the skin, which may be caused by ultraviolet rays, infrared rays, etc., to impart a function of suppressing skin aging due to heat.

In the present invention, zinc oxide, titanium dioxide, and cerium oxide are composites prepared by a powder manufacturing method that simultaneously blocks infrared rays and ultraviolet rays proposed in Korean Patent Registration No. 10-1148427, which is a pre-registered patent of the applicant, in addition to its single substance. Can be

The glass powder used in the present invention may be rigid glass or silica glass having silicate anhydride SiO 2 as a main component. It is the most common among glass, and there are various types such as soda-lime glass, potassium-lime glass, and lead glass. In addition, silica glass includes transparent quartz glass made by melting crystals and opaque silica glass made by semi-melting silica or silica sand. Among them, the opaque silica glass is white because it contains many bubbles and is unsuitable for the optical system. Because the thermal expansion rate is very small, it is resistant to rapid quenching and has a softening point of 1,600~1,700℃. The refractive index is 1458, and corrosion resistance and acid resistance are large. It has excellent UV transmittance up to 2,000A and excellent elasticity. However, melting requires a high temperature of 1,800°C and is expensive because of the need for oxygen and hydrogen flame in the pores. It is used for hot air balloon materials, chemical device materials, UV transmission optical device materials, and precision springs.

In the field of cosmetics, glass powder is used as a pigment grade pigment used to color or impart a light sensation through reflection and refraction in color cosmetics. Glass powder has a variety of particle sizes ranging from a few micrometers to several tens of micrometers, and its transparency is good, so it can be used for various purposes because it can give a different feeling without harming the overall color of the formulation. In addition, in the case of fine glass powder having smaller particles, the amount of oil is reduced to be applied for a matte finish.

In the present invention, it was confirmed and finally used by mixing the glass powder with other inorganic sunscreens at a certain concentration or more, while expressing a matte usability without compromising overall transparency and at the same time blocking the wavelength of the infrared region. .

According to one embodiment of the present invention, it is preferable to include 1 to 20% by weight of zinc oxide, 1 to 10% by weight of titanium dioxide, 1 to 10% by weight of cerium oxide, and 1 to 10% by weight of glass powder relative to the total weight of the cosmetic composition .

According to one embodiment of the present invention, the inorganic powder mixture is preferably mixed in a weight ratio of zinc oxide, titanium dioxide, cerium oxide and glass powder in a ratio of 10 to 15:3 to 5:1 to 3:1 to 3, 10 A mixed weight ratio of ~15:3 to 5:3:3 is more preferable.

According to the most preferred embodiment of the present invention, the content of the inorganic powder mixture as an active ingredient in the cosmetic composition of the present invention is 4 to 50% by weight relative to the total weight, more preferably 5 to 35% by weight. If the content is less than 4% by weight, it is difficult to exhibit a sunscreen effect, and when it exceeds 50% by weight, the above-mentioned content range is suggested because the cloudiness increases and the stability and cost of the formulation are increased.

The components included in the cosmetic composition of the present invention, as active ingredients, may include ingredients commonly used in cosmetic compositions in addition to the active ingredients, such as antioxidants, stabilizers, solubilizers, vitamins, pigments, and fragrances Adjuvants, and carriers.

The cosmetic composition of the present invention may be prepared in any formulation conventionally prepared in the art, for example, solutions, suspensions, emulsions, pastes, gels, creams, lotions, powders, cleansings, oils, powder foundations, Emulsion foundation, wax foundation, sun cream, pack, shampoo, scalp pack, treatment, massage cream and may be prepared in the form of a spray or powder.

When the formulation of the present invention is a paste, cream or gel, animal oil, vegetable oil, wax, paraffin, starch, trakant, cellulose derivative, polyethylene glycol, silicone, bentonite, silica, talc or zinc oxide, etc. may be used as a carrier component. Can.

When the formulation of the present invention is a suspension, liquid diluents such as water, ethanol or propylene glycol as carrier components, ethoxylated isostearyl alcohol, suspensions such as polyoxyethylene sorbitol esters and polyoxyethylene sorbitan esters, microcrystals Sex cellulose, aluminum metahydroxide, bentonite, agar or trakant, etc. can be used.

When the formulation of the present invention is a powder or spray, lactose, talc, silica, aluminum hydroxide, calcium silicate or polyamide powder may be used as a carrier component, and in particular, in the case of a spray, additionally chlorofluorohydrocarbon, propane /Propellants such as butane or dimethyl ether.

The cosmetic composition of the present invention may be used alone or in combination, or may be used in combination with other cosmetic compositions other than the present invention. In addition, the cosmetic composition according to the present invention can be used according to a conventional method of use, and the number of uses can be varied according to the user's skin condition or taste.

The inorganic composition sunscreen cosmetic composition of the present invention has a feature of blocking ultraviolet and infrared rays to limit skin damage and temperature rise of the skin, which may be caused by sunlight and solar heat, and thus suppress skin aging caused by heat.

Hereinafter, the present invention will be described in more detail through examples and experimental examples. These examples are only for specifically explaining the present invention, it will be apparent to those skilled in the art that the scope of the present invention is not limited by these examples according to the gist of the present invention.

Production Example 1. Preparation of cosmetic composition for blocking inorganic composition ultraviolet rays and infrared rays (1)

With the composition shown in Table 1 below, a cosmetic composition comprising an inorganic powder was prepared according to the method presented below.

Zinc oxide ZnO M (provided by East Hill), titanium dioxide TiO ₂ D (provided by East Hill), cerium oxide CERATECT AQUA F5-CS (provided by K Chem), glass powder SiO ₂ MBC008 (provided by East Hill) are properly dispersed in the oil phase After the preparation, a W/O emulsion to emulsify by adding an aqueous phase is prepared. The same amount was tested to measure the hiding rate, UV and infrared ray blocking index, respectively.

Ingredient (unit: weight%) Example 1 Example 2 Example 3 Example 4 Comparative Example 1 ZnO M 10.00 - - - - TiO ₂ D - 10.00 - - - CERATECT AQUA F5-CS - - 10.00 - - SiO ₂ MBC008 - - - 10.00 - Polyglyceryl-6 polyricinolate 1.00 1.00 1.00 1.00 1.00 C12-15 alkyl benzoate 20.00 20.00 20.00 20.00 20.00 Dicaprylyl carbonate 10.00 10.00 10.00 10.00 10.00 Cetyl page/fiji-10/1 dimethicone 2.50 2.50 2.50 2.50 2.50 Purified water To 100 To 100 To 100 To 100 To 100 Sodium chloride 1.00 1.00 1.00 1.00 1.00 Disodium ID 0.02 0.02 0.02 0.02 0.02 1,2-hexanediol 2.00 2.00 2.00 2.00 2.00 Spices 0.20 0.20 0.20 0.20 0.20

Experimental Example 1. Measurement of UV protection in vitro

The in vitro UV protection effect of the cosmetic compositions of Examples 1 to 4 and Comparative Example 1 was measured. The measurement was performed using an SPF-290AS instrument, and the results are shown in FIG. 1.

Referring to Figure 1, Example 2 containing titanium dioxide (TiO ₂ D) is more specialized in UVB defense than UVA, Example 1 containing cerium oxide (ZnO M) and cerium oxide (CERATECT AQUA F5-CS) It was found that Example 3 containing a more blocked UVA side than UVB. In addition, it was confirmed that Example 4 containing glass powder (SiO2 MBC008) did not participate in UVB or UVA blocking. The sunscreen effect was high in the order of titanium dioxide>zinc oxide=cerium oxide>glass powder.

Experimental Example 2. In vitro infrared blocking measurement

Infrared blocking effects on the cosmetic compositions of Examples 1 to 4 and Comparative Example 1 were measured. The measuring device was measured in a reflection mode by a Bruker MPA Near Infrared Spectrometer (IR), and the results are shown in FIG. 2.

Referring to FIG. 2, it can be seen that Example 3 containing cerium oxide (CERATECT AQUA F5-CS) is most effective in blocking infrared rays, and in addition, an example containing a glass powder (SiO ₂ MBC008) is used for the infrared region next. It was confirmed that the contribution to blocking was high. The infrared ray blocking effect was highest in the order of cerium oxide>glass powder>zinc oxide>titanium dioxide.

Experimental Example 3. Cloak rate measurement

Turbidity is the part that must be considered in order to manufacture an inorganic composition sunscreen product. In order to confirm the turbidity, the hiding ratios of the cosmetic compositions of Examples 1 to 4 and Comparative Example 1 were measured and are shown in Table 2 below. The concealment rate was calculated using Equation 1 below, and the closer to 1, the higher the concealment rate (=turbidity, covering power).

The concealment rate was measured by a color difference meter (Coloremeter NR-60CP) after forming the coating film by raising the same amount of Examples 1 to 4 and Comparative Example 1 as an applicator for forming a film on black and white paper and drying for 1 hour.

division Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Coverage rate 2.47 1.50 1.84 1.96 2.62

As a result of the hiding rate measurement, the transparency of Example 1 containing zinc oxide was the highest, and the turbidity of Example 2 containing titanium dioxide was the highest.

Manufacturing example 2. Inorganic composition UV and infrared ray blocking Cosmetic Composition Preparation (2)

By combining the above experimental results, the mixed composition of the inorganic powder having a transparent combination while showing the maximum ultraviolet and infrared ray blocking efficiency was selected to prepare the cosmetic compositions of Examples 5 to 10.

Ingredient (unit: weight%) Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 ZnO M 10.00 12.00 10.00 12.00 14.00 14.00 TiO ₂ D 3.00 3.00 5.00 5.00 3.00 5.00 CERATECT AQUA F5-CS 1.00 1.00 3.00 3.00 3.00 3.00 SiO ₂ MBC008 1.00 1.00 3.00 3.00 3.00 3.00 Polyglyceryl-6 polyricinolate 1.00 1.00 1.00 1.00 1.00 1.00 C12-15 alkyl benzoate 20.00 20.00 20.00 20.00 20.00 20.00 Dicaprylyl carbonate 10.00 10.00 10.00 10.00 10.00 10.00 Cetyl page/fiji-10/1 dimethicone 2.50 2.50 2.50 2.50 2.50 2.50 Purified water To 100 To 100 To 100 To 100 To 100 To 100 Sodium chloride 1.00 1.00 1.00 1.00 1.00 1.00 Disodium ID 0.02 0.02 0.02 0.02 0.02 0.02 1,2-hexanediol 2.00 2.00 2.00 2.00 2.00 2.00 Spices 0.20 0.20 0.20 0.20 0.20 0.20

Experimental Example 4. Inorganic composition considering ultraviolet rays, infrared rays, and hiding rate Cosmetic Measurement of UV protection value of composition, concealment rate measurement

UV blocking values and hiding rates of the cosmetic compositions of Examples 5 to 10 were measured and are shown in Table 4 below. Measurement of UV protection and hiding rate was performed in the same manner as in Experimental Examples 1 and 3 above.

division Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 In vitro UV protection (SPF) 33.5±0.2 38.2±0.3 42.2±0.2 45.3±0.5 52.8±0.4 59.7±0.3 UV protection (PA) in vitro 7.8±0.2 8.9±0.3 15.9±0.1 16.2±0.2 17.1±0.3 17.9±0.2 Coverage Index 2.31 2.24 1.62 1.69 2.09 1.50

Looking at Table 4, UV measurement results of the cosmetic composition of Examples 5 to 10, titanium dioxide (TiO ₂ D) and zinc oxide (ZnO M) showed a high UV blocking rate when added above a certain content, especially zinc oxide It was confirmed that the higher the content, the higher the PA (UVA blocking) value. In addition, it was confirmed that the higher the titanium dioxide content, the higher the SPF (UVB blocking) value, but the higher the turbidity accordingly, and thus it was found that the content control was necessary. Satisfactory results were obtained in the cosmetic compositions of Examples 7 to 10 when considering the UV measurement and the hiding rate.

Experimental Example 5. Inorganic composition considering ultraviolet rays, infrared rays, and hiding rate Cosmetic Measurement of infrared blocking value of composition

The infrared blocking effect of the cosmetic compositions of Examples 5 to 10 and Comparative Example 1 was measured. The results are shown in FIG. 3. Referring to FIG. 3, it can be seen that the infrared blocking rate increases as the content of cerium oxide (CERATECT AQUA F5) and glass powder (SiO ₂ MBC008), which are infrared blocking raw materials, increases. When considering the infrared value, satisfactory results were obtained in the cosmetic compositions of Examples 7 to 10.

Claims (4)

A cosmetic composition for blocking ultraviolet and infrared rays comprising an inorganic powder mixture in which zinc oxide, titanium dioxide, cerium oxide and glass powder are mixed in a weight ratio of 10 to 15:3 to 5:3:3. According to claim 1, The cosmetic composition is 1 to 20% by weight of the zinc oxide relative to the total weight of the cosmetic composition, 1 to 10% by weight of the titanium dioxide, 1 to 10% by weight of the cerium oxide and 1 to 10% by weight of the glass powder Cosmetic composition for blocking ultraviolet and infrared rays containing. According to claim 1, The inorganic powder mixture is contained in 4 to 50% by weight relative to the total weight of the cosmetic composition, UV and infrared blocking cosmetic composition. delete

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