KR20220080558A - Cosmetic composition with excellent tabletting properties and dropping stability - Google Patents

Abstract

The present invention relates to a cosmetic composition having excellent tabletting properties and drop stability. The solid cosmetic composition of the present invention exhibits a natural defect hiding effect without cloudiness by including the spherical powder, and has excellent applicability and feeling of use. In addition, since the solid cosmetic composition of the present invention includes a metal oxide powder having a particle size of nanometers, the problems of poor tabletting properties and drop stability due to the spherical powder are remarkably improved.

Description

Cosmetic composition with excellent tabletting properties and dropping stability

The present invention relates to a cosmetic composition having excellent tabletting properties and drop stability.

Conventional color cosmetics include plate-shaped pigments such as talc and white pigments such as titanium dioxide and zinc oxide to cover the flaws of the user's skin. When such a color cosmetic is applied to the skin, light is absorbed and reflected by the cosmetic film and thus does not penetrate the cosmetic film, thereby hiding skin defects. However, if the hiding power is increased by increasing the plate-shaped pigment and the white pigment, the difference between the reflective properties of the cosmetic film and the original skin reflective properties gradually increases as the content of the plate-shaped and white pigments increases, and the white dioxide contained in the cosmetic film increases. Due to the increase in the amount of light reflected by titanium and zinc oxide, the skin becomes cloudy. In addition, the characteristic stiff feeling of use of titanium dioxide and zinc oxide inhibits the sensual satisfaction (feeling of use) of consumers, and thus the applicability of the cosmetic composition is also lowered.

When a color cosmetic includes a spherical powder that refracts and transmits light, defects can be concealed without cloudiness due to the blurring effect due to the diffuse transmission of light. In addition, the spherical powder has a low rolling friction, so it has excellent applicability, and can give consumers a sense of sensual satisfaction when using it. However, when a large amount of spherical powder is added to a compressed powder formulation such as a powder compact, tableting performance is poor due to the elasticity of the spherical powder, unlike a plate-shaped raw material that is easy to tablet. In addition, when an external impact is applied after tableting, the tableted compressed powder easily bursts, thereby seriously impairing durability and drop stability of the product.

In order to solve the above problem, a wet cosmetic manufacturing method in which a solid cosmetic is mixed with a solvent, formulated into a slurry, and dried (Korean Patent Publication No. 10-2019-0083341), or a spherical powder having moldability (domestic registration Patent No. 10-2078526) and the like are disclosed prior literature. However, the technique disclosed in the prior literature requires an additional process such as wet manufacturing and surface treatment of the spherical powder, thereby increasing the complexity, time required, and manufacturing cost of the manufacturing process. In addition, even using the technique disclosed in the prior literature, the problem that the drop stability is inhibited could not be completely improved.

In addition, as the content of the oil binder in the formulation of the compressed cosmetic is increased, the tabletting and dropping stability of the compressed cosmetic tends to be improved. However, it is difficult to sufficiently secure tabletting properties and drop stability of the cosmetic only by increasing the content of the oil binder. In addition, when the content of the oil binder exceeds a certain level (about 15%), the bonding between the powders of the compressed-compressed cosmetic exceeds the appropriate level, which causes a so-called caking phenomenon that is difficult to use by scooping it out with an applicator, etc., and discoloration occurs. do.

That is, there is a need to develop a cosmetic composition that contains a large amount of spherical powder, which can hide natural skin flaws without cloudiness, has excellent applicability and feel, and has improved tabletting properties and drop stability problems.

Therefore, the problem to be solved by the present invention is to provide a cosmetic composition that exhibits a natural skin defect hiding effect without cloudiness, has excellent applicability and feel, and has improved tabletting properties and drop stability.

As a result of research efforts to develop a compression cosmetic with excellent tabletting and drop stability without caking, the present inventors include a metal oxide powder having a particle size in nanometers, and preferably convert some of the spherical powder into an oil-absorbing spherical powder When included, a surprising discovery was made that the hardness and drop stability of the powder cosmetic composition were remarkably improved without caking.

The present invention provides a solid cosmetic composition comprising a spherical powder, a metal oxide powder having a particle size of nanometers, and an oil binder. Preferably, the spherical powder may include an oil-absorbing spherical powder.

Hereinafter, in the present specification, the term 'particle size' refers to a value corresponding to D50 in a particle size distribution measured by a dynamic light scattering (DLS) method or the like.

In one embodiment, the spherical powder has a spherical shape and has high applicability, and may exhibit a blurring effect by refracting and transmitting light. The spherical powder may include inorganic substances such as zeolite, silica, alumina or zinc oxide, titanium dioxide, and the like; Nylon, polyethylene, polystyrene, polymethylsilsesquioxane, HDI/trimethylolhexyllactone crosspolymer, polyvinylpyrrolidone, polycaprolactone, polylactic acid, diphenyldimethicone/vinyldiphenyldimethicone/sil organic substances such as sesquioxane cross polymer, vinyl dimethicone/methicone silsesquioxane cross polymer, and polymethyl methacrylate; Alternatively, it may be a simple mixture of the inorganic material and the organic material, or a complex composed of the inorganic material and the organic material, but the spherical powder that can be used in the present invention is not limited thereto. The average particle diameter of the spherical powder may be 1 to 20 um, preferably 2 to 15 um. When the average particle diameter of the spherical powder is less than 1 μm, the applicability and feeling of use of the composition may be reduced. Alternatively, when the average particle diameter of the spherical powder is greater than 20 um, the drop stability may be reduced. The content of the spherical powder may be 8 to 45% by weight, preferably 10 to 35% by weight, based on the total weight of the composition. When the content of the spherical powder is less than 8% by weight, the effect of concealing skin imperfections and improving the feeling of use is not sufficiently exhibited. Alternatively, when the content of the spherical powder exceeds 45% by weight, tabletting properties and drop stability may be reduced. Preferably, Shinetsu's KSP-300 commercially available as an embodiment of the spherical powder may be used, but is not limited thereto.

In one embodiment, the oil-absorbing spherical powder may refer to a spherical powder having the ability to adsorb 100 ml or more (ie, 1 ml/g or more) of oil per 100 g. Oil-absorbing spherical powders usually have a porous structure, and by virtue of their large surface area, they absorb sweat and sebum, thereby providing the function of maintaining an optimal makeup state. The solid cosmetic composition of the present invention includes the oil-absorbing spherical powder together with a large amount of the oil binder, so that the caking phenomenon does not occur and tabletting and dropping stability of the solid cosmetic composition can be improved. The oil-absorbing spherical powder may include inorganic substances such as zeolite and silica; organic substances such as polymethylmethacrylate, dimethicone/vinyldimethicone crosspolymer, polyvinylpyrrolidone, polycaprolactone, polylactic acid, and polymethylmethacrylate; Alternatively, it may be a simple mixture of the inorganic material and the organic material, or a complex composed of the inorganic material and the organic material. The average particle diameter of the oil-absorbing spherical powder may be 1 um to 20 um, preferably 5 to 15 um. When the average particle diameter of the oil-absorbing spherical powder is less than 1 μm, the applicability and usability of the composition may be reduced. When the average particle diameter of the oil-absorbing spherical powder is more than 20 um, the tableting property and drop stability of the solid cosmetic composition may be reduced.

In one embodiment, the solid cosmetic composition of the present invention can control the floating properties of the cosmetic in the compressed powder state by adjusting the content of the oil-absorbing spherical powder. The content of the oil-absorbing spherical powder may be 2 to 40 wt%, preferably 4 to 22 wt%, based on the total weight of the composition. When the content of the oil-absorbing spherical powder is less than 2% by weight, the floating property of the cosmetic composition in the form of a compressed powder is lowered, and it may be difficult for the user to remove the cosmetic composition with an applicator such as a brush or puff, or by hand. When the content of the oil-absorbing spherical powder exceeds 40% by weight, the floating property is excessively increased, so that it may be inconvenient to control the amount of floating powder or the cosmetic composition. Sunsil-130, commercially available from Sunjin Chemical, may be used as an embodiment of the oil-absorbing spherical powder, but is not limited thereto.

In one embodiment, the solid cosmetic composition of the present invention provides a color or pearl luster suitable for cosmetics, or through a method of controlling light scattering and transmission, to assist the blurring effect of the spherical powder and optimize the cosmetic effect. It may further include a powder having a plate-like shape, that is, a plate-shaped powder. The plate-like powder is preferably included within a range that does not cause cloudiness and does not impair the blurring effect. In order to realize the skin imperfection hiding ability and cosmetic effect required for the composition, the plate-shaped powder can be formulated in an appropriate amount within the range where the blurring effect of the spherical powder and the light reflection effect of the plate-shaped powder are properly balanced. have. For example, the plate-shaped powder may be included in an amount of 10 to 80% by weight, preferably 20 to 75% by weight, more preferably 30 to 70% by weight, based on the total weight of the composition, but is not limited thereto. When the plate-shaped powder is included in the above content range in the solid cosmetic composition of the present invention, it can have sufficient tabletting properties and drop stability while exhibiting an effect of hiding skin defects without clouding.

In one embodiment, the metal oxide powder may have a refractive index of 1.8 to 3, or higher, and the metal oxide powder may be used to cover skin imperfections or block UV rays. In the present invention, the metal oxide powder may have a particle size of nanometers, and the particle size is 10 to 150 nm, preferably 10 to 100 nm, more preferably 10 to 70 nm, even more preferably 10 to 30 may be nm. When the particle diameter of the metal oxide powder is less than 10 nm, the applicability and feeling of use of the solid cosmetic composition may be deteriorated. When the particle diameter of the metal oxide powder is more than 150 nm, tabletting properties and drop stability of the solid cosmetic composition may be deteriorated. The metal oxide powder may be zinc oxide or titanium dioxide, preferably zinc oxide or titanium dioxide having the above particle size, and more preferably titanium dioxide having the above particle size. The metal oxide powder may be surface-treated with a surface treatment agent to be described later to prevent agglomeration, and the particle size of the surface-treated metal oxide powder is preferably within the above range.

The content of the metal oxide powder may be 3 to 40% by weight, preferably 5 to 30% by weight, based on the total weight of the composition. When the content of the metal oxide powder is less than 3% by weight, tabletting properties and drop stability of the solid cosmetic composition may be deteriorated. When the content of the metal oxide powder is more than 40% by weight, the applicability and feeling of use of the solid cosmetic composition may be deteriorated. As a preferred embodiment of the titanium dioxide, Tayca's MT-100TV commercially available may be used, but is not limited thereto.

Although the present invention is not limited by theory, since the solid cosmetic composition of the present invention includes the metal oxide powder having a specific particle size in the nanometer unit, the contact surface between the powder and the oil binder in the formulation is increased, so that the bonding force due to interfacial tension is increased (Fig. 2). More specifically, the pores formed around the contact surface of the spherical powder in the formulation are filled with the metal oxide powder, and an oil binder exists at the interface between the spherical powder and the metal oxide, so that the spherical powder - oil binder - metal oxide - oil binder - spherical powder An interface leading to Accordingly, the interfacial tension between the oil binder and the spherical powder; and interfacial tension between the oil binder and the metal oxide additionally acts. Therefore, compared to the state in which no metal oxide is present and voids exist between the spherical powders, when a metal oxide powder having a nanometer particle size is included in the cosmetic composition together with the spherical powder, the cosmetic composition falls while the hardness is strengthened after tableting. Due to this, the separation of the spherical powder is prevented when subjected to an impact, and the fall stability is improved.

In the present invention, the oil binder is used as a binder that serves to increase the specific gravity of the powder part in the solid cosmetic composition and reduce powder flying. The oil binder may refer to the oil phase of the solid cosmetic composition of the present invention. In one embodiment, the oil binder may include at least one selected from the group consisting of silicone-based oil, hydrocarbon-based oil, ester-based oil, higher fatty acids, synthetic wax, natural wax, and the like. In addition, the oil binder is from the group consisting of organic sunscreen agents, preservatives, surfactants, glycerin, 1,3-butylene glycol, humectants such as sorbitol, thickeners such as xanthan gum, synthetic waxes, natural waxes and fragrances. It may further include one or more selected. In one embodiment, the oil binder may be a component that is liquid at room temperature to about 120 °C. In one embodiment, the oil binder may be included in an amount of 5 to 30% by weight, preferably 10 to 25% by weight, more preferably 12 to 20% by weight based on the total weight of the composition. When the content of the oil binder is less than 5% by weight relative to the total weight of the composition, powdering of the cosmetic composition may be severe. When the content of the oil binder exceeds 30% by weight relative to the total weight of the composition, the floating properties of the cosmetic may be lowered and it may be inconvenient for the user to remove the cosmetic by hand or with an applicator (brush or puff, etc.).

In one embodiment, the solid cosmetic composition of the present invention may be a solid powder cosmetic composition. The solid powder cosmetic composition may include a powder part and an oil binder. The powder part may further include any one or more selected from the group consisting of an extender pigment, a color pigment, a white pigment, and a pearlescent pigment, in addition to the spherical powder, the oil-absorbing spherical powder, and the metal oxide powder. Also, in an embodiment, at least one of the extender pigment, the color material pigment, the white pigment, and the pearlescent pigment may include one or more plate-shaped powders. The powder part may be included in an amount of 70 to 95% by weight, preferably 75 to 90% by weight, more preferably 80 to 88% by weight, based on the total weight of the composition. When the content of the powder portion is less than 70% by weight relative to the total weight of the composition, the cosmetic's floating property may be reduced, and if it exceeds 95% by weight, the powdering phenomenon may be severe. In one embodiment, the solid powder cosmetic composition may be a loose powder formulation in which the powder part and the oil binder are simply mixed and pulverized. Also, in one embodiment, the solid powder cosmetic composition may be a compressed powder formulation such as a powder compact obtained by compression tableting the mixed and pulverized cosmetic composition in a container having a certain shape.

In one embodiment, the extender pigment may improve the moldability of the cosmetic, and may be used to prepare the cosmetic in the form of a compressed powder. The extender pigment is made of talc, mica, calcium carbonate, magnesium/potassium/silicon/fluoride/hydroxide/oxide, synthetic fluorophlogopite, boron nitride, barium sulfate, silicon oxide, aluminum hydroxide, and kaolin. It may include any one or more selected from the group. As an example of the extender pigment, commercially available OTS-2 Talc JA-46R manufactured by DAITO KASEI may be used, but is not limited thereto. In one embodiment, the extender pigment may have a plate-like shape, and may be smoothly applied to the skin surface due to this shape.

In one embodiment, the colorant pigment may serve to impart color to the cosmetic by being diluted in the cosmetic composition. The colorant pigment may include at least one selected from the group consisting of red iron oxide, yellow iron oxide, black iron oxide, chromium oxide, ultramarine, and manganese violet, but is not limited thereto. In one embodiment, the colorant pigment may have a plate-like shape, and may be smoothly applied to the skin surface due to this shape.

In one embodiment, the pearlescent pigment is bismuth oxychloride, or synthetic pearl coated with titanium dioxide on a mica substrate, synthetic pearl coated with titanium dioxide on a calcium aluminum borosilicate substrate, or on a calcium sodium borosilicate substrate It may include, but is not limited to, synthetic pearls coated with titanium dioxide. In one embodiment, the pearlescent pigment may have a plate-like shape, and may be smoothly applied to the skin surface due to this shape.

In one embodiment, the powders included in the cosmetic composition of the present invention may be treated with a surface treatment agent. Through this, it is possible to increase the dispersibility and applicability of the powder, prevent re-agglomeration of the powder particles, and improve the physical and sensory properties of the cosmetic formulation. For example, the spherical powder, oil absorption spherical powder, metal oxide powder, extender pigment, color material pigment, etc. are methicone, dimethicone, stearic acid, triethoxycaprylylsilane, distearyldimo on the surface of the powder. It may be treated with any one or more surface treatment agents selected from the group consisting of nium chloride, alkylsilane, fatty acid, silane coupling agent, mineral oil, and silica, but is not limited thereto. The surface treatment agent may be included in an amount of 0.05% to 10% by weight based on the total weight of each powder to be surface-treated. When the surface treatment agent is less than 0.05% by weight based on the total weight of each of the powders to be surface-treated, the effect of improving dispersibility, coating properties, and feeling of use of the powder may not be sufficiently exhibited. When the surface treatment agent is more than 10% by weight relative to the total weight of the powder to be treated on each surface, the surface treatment of the powder is not facilitated, so the formulation stability of the solid cosmetic composition is lowered, and agglomeration or caking may be induced. have.

In one embodiment, the solid cosmetic composition of the present invention contains the spherical powder and the oil binder in a weight ratio of 1:0.1 to 3.8, preferably 1:0.3 to 2, more preferably 1:0.4 to 1.6 (spherical powder: oil binder). may include In addition, the solid cosmetic composition of the present invention contains the oil binder and the metal oxide powder in a weight ratio of 1:0.1-8, preferably 1:0.2-3, more preferably 1:0.3-1.6 (oil binder:metal oxide powder) can do. As described above, the solid cosmetic composition comprising the spherical powder, the oil binder, and the metal oxide powder in a specific weight ratio has excellent tabletting properties and drop stability, and also remarkably excellent optical properties and feeling of use.

In addition, the present invention comprises the steps of: s1) mixing a powder portion comprising a spherical powder and a metal oxide powder having a nanometer-sized particle size; s2) adding an oil binder to the mixture of s1) and stirring; s3) pulverizing the mixture of s2) using a pulverizer; And s4) provides a method for producing a solid cosmetic composition comprising the step of compression tableting the pulverized product of step s3) using a hydraulic press. The technical characteristics mentioned with respect to the solid cosmetic composition of the present invention may be equally applied to the manufacturing method.

All ingredients described in the present invention, preferably, relevant laws and regulations of Korea, China, the United States, Europe, Japan, etc. (eg, regulations on cosmetic safety standards (Korea), cosmetic safety technical standards (China)) Do not exceed the maximum use value specified in etc. That is, preferably, the cosmetic composition according to the present invention includes the ingredients according to the present invention within the content limit allowed by the relevant laws and regulations of each country.

The solid cosmetic composition of the present invention exhibits a natural defect hiding effect without cloudiness by including the spherical powder, and has excellent applicability and feeling of use. In addition, since the solid cosmetic composition of the present invention includes a metal oxide powder having a particle size of nanometers, the problems of poor tabletting properties and drop stability due to the spherical powder are remarkably improved.

1 is a photograph taken after applying Comparative Examples 6 and 12 on the skin of the back of the hand in the measurement of the optical properties and the sensory evaluation of Experimental Example 2.
2 is a conceptual diagram illustrating an increase in the contact surface of the powder-oil binder due to the addition of the above-described metal oxide.

Hereinafter, examples and the like will be described in detail to help the understanding of the present invention. However, the embodiments according to the present invention may be modified in various other forms, and the scope of the present invention should not be construed as being limited to the following examples. The embodiments of the present invention are provided to more completely explain the present invention to those of ordinary skill in the art to which the present invention pertains.

Formulation preparation and tableting method

(1) Method for preparing sample group 1 for impact resistance test

1) Components 1 to 12 listed in Table 1 were weighed and stirred for 20 seconds at 22,000 rpm (high button) using Waring's Laboratory blender 7010S.

2) Components 13 to 16 listed in Table 1 were weighed and uniformly mixed with a specialist, and then added to 1) under stirring at 18,000 rpm (low button) with Waring's Laboratory blender 7010S.

3) After stirring for 20 seconds at 22,000 rpm (high button) using Waring's Laboratory blender 7010S, the contents were mixed with a sputterer and stirred again for 20 seconds.

4) It was pulverized twice at 15,000 rpm using a hammer mill type atomizer manufactured by Baroin.

5) The pulverized product of 4) was placed on an aluminum plate having an inner diameter of 52 mm and a height of 5 mm from Pauco, and compression tableting was performed using a pneumatic cylinder KB-FA80X100ST from Keon Young Machinery. In the compression tableting process, the moving part of the pneumatic cylinder positioned above the plate and the composition contained in the plate is slowly lowered from the top to the bottom to evenly pour the composition in the plate into the plate, and the lowered cylinder is further descended and the composition is evenly distributed in the plate. is divided into two stages of the tableting process of compressing Compression tableting was performed under the conditions of 5 seconds for the input process and 0.55 seconds for the tableting process. The maximum value of pressure on the pressure gauge during tableting was found to be impossible to measure during the input process (represented as 0 kgf/cm ² on the gauge), and it was found to be between 17.5 kgf/cm ² and 22.5 kgf/cm ² during the tableting process.

number INCI name Classification of raw material function Comparative Example 1 Comparative Example 2 Comparative Example 3 Example 1 Example 2 One Dimethicone and triethoxycaprylyl silane surface treatment talc Body pigment (plate shape) To 100.00 To 100.00 To 100.00 To 100.00 To 100.00 2 Triethoxysilyl Polydimethylsiloxy Hexyl Dimethicone Surface Treatment Magnesium / Potassium / Silicon / Fluoride / Hydroxide / Oxide Body pigment (plate shape) 10.00 10.00 10.00 10.00 10.00 3 Dimethicone surface treatment boron nitride Body pigment (plate shape) 15.00 15.00 15.00 15.00 15.00 4 Hydrogen dimethicone surface treatment zinc oxide (average particle size 50 nm) white pigment 0.00 10.00 0.00 0.00 0.00 5 Methicone surface treatment titanium dioxide (average particle size 1000 nm) white pigment 0.00 0.00 10.00 0.00 0.00 6 Stearic acid surface treatment titanium dioxide (average particle diameter 70 nm) white pigment 0.00 0.00 0.00 10.00 0.00 7 Stearic acid surface treatment titanium dioxide (average particle diameter 15 nm) white pigment 0.00 0.00 0.00 0.00 10.00 8 Nylon-12 Body pigment (spherical) 5.00 5.00 5.00 5.00 5.00 9 Polymethylsilsesquioxane Body pigment (spherical) 3.00 3.00 3.00 3.00 3.00 10 Silica (oil absorption capacity 1.1 ml/g) Body pigment (spherical, oil-absorbing powder) 18.00 18.00 18.00 18.00 18.00 11 Silica (oil absorption capacity 3.8 ml/g) Body pigment (spherical, oil-absorbing powder) 4.00 4.00 4.00 4.00 4.00 12 Dimethicone surface treatment iron oxide (total mass of red iron oxide, yellow iron oxide, and black iron oxide) color pigment 1.99 1.99 1.99 1.99 1.99 13 Phenyltrimethicone paid part 5.00 5.00 5.00 5.00 5.00 14 Ethylhexylmethoxycinnamate paid part 1.00 1.00 1.00 1.00 1.00 15 Octyldodecylstearoylstearate paid part 9.00 9.00 9.00 9.00 9.00 16 1,2-Hexanediol paid part 1.00 1.00 1.00 1.00 1.00

(2) Method for preparing sample group 2 for impact resistance test

1) Components 1 to 8 listed in Table 2 were weighed and stirred for 20 seconds at 22,000 rpm (high button) using Waring's Laboratory blender 7010S.

2) Components 9 to 12 listed in Table 2 were weighed and uniformly mixed with a specialist, and then added to 1) under stirring at 18,000 rpm (low button) with Waring's Laboratory blender 7010S.

3) After stirring for 20 seconds at 22,000 rpm (high button) using Waring's Laboratory blender 7010S, the contents were mixed with a sputterer and stirred again for 20 seconds.

4) It was pulverized twice at 15,000 rpm using a hammer mill type atomizer manufactured by Baroin.

5) The pulverized product of 4) was placed on an aluminum plate having an inner diameter of 52 mm and a height of 5 mm from Pauco, and compression tableting was performed using a pneumatic cylinder KB-FA80X100ST from Keon Young Machinery. In the compression tableting process, the moving part of the pneumatic cylinder positioned above the plate and the composition contained in the plate is slowly lowered from the top to the bottom to evenly pour the composition in the plate into the plate, and the lowered cylinder is further descended and the composition is evenly distributed in the plate. is divided into two stages of the tableting process of compressing Compression tableting was performed under the conditions of 5 seconds for the input process and 0.55 seconds for the tableting process. During tableting, the maximum value of the pressure on the pressure gauge was found to be impossible to measure during the input process (represented as 0 kgf/cm ² on the gauge), and was between 17.5 kgf/cm ² and 22.5 kgf/cm ² during the tableting process. .

number INCI name Classification of raw material function Comparative Example 4 Comparative Example 5 Example 3 Example 4 Example 5 Example 6 Example 7 One Dimethicone and triethoxycaprylyl silane surface treatment talc Body pigment (plate shape) To 100.00 To 100.00 To 100.00 To 100.00 To 100.00 To 100.00 To 100.00 2 Triethoxysilyl Polydimethylsiloxy Hexyl Dimethicone Surface Treatment Magnesium / Potassium / Silicon / Fluoride / Hydroxide / Oxide Body pigment (plate shape) 8.00 8.00 8.00 8.00 8.00 8.00 8.00 3 Dimethicone surface treatment boron nitride Body pigment (plate shape) 10.00 10.00 10.00 10.00 10.00 10.00 10.00 4 Polymethylsilsesquioxane Body pigment (spherical) 11.00 11.00 11.00 11.00 11.00 11.00 11.00 5 HDI/trimethylolhexyllactone crosspolymer Body pigment (spherical) 7.00 7.00 7.00 7.00 7.00 7.00 9.00 6 Silica (oil absorption capacity 3.8 ml/g) Body pigment (spherical, oil-absorbing powder) 7.00 7.00 7.00 7.00 7.00 7.00 5.00 7 Stearic acid surface treatment titanium dioxide (average particle diameter 15 nm) white pigment 0.00 2.50 5.00 7.50 10.00 15.00 25.00 8 Dimethicone surface treatment iron oxide (total mass of red iron oxide, yellow iron oxide, and black iron oxide) color pigment 1.80 1.80 1.80 1.80 1.80 1.80 1.80 9 Phenyltrimethicone paid part 5.00 5.00 5.00 5.00 5.00 5.00 5.00 10 Ethylhexylmethoxycinnamate paid part 1.00 1.00 1.00 1.00 1.00 1.00 1.00 11 Octyldodecylstearoylstearate paid part 9.00 9.00 9.00 9.00 9.00 9.00 9.00 12 1,2-Hexanediol paid part 1.00 1.00 1.00 1.00 1.00 1.00 1.00

(3) Method for preparing sample group 3 for optical property test and sensory evaluation

1) Components 1 to 8 described in Table 3 were weighed and stirred for 20 seconds at 22,000 rpm (high button) using Waring's Laboratory blender 7010S.

2) Components 9 to 12 listed in Table 3 were weighed and uniformly mixed with a specialist, and then added to 1) under stirring at 18,000 rpm (low button) with Waring's Laboratory blender 7010S.

3) After stirring for 20 seconds at 22,000 rpm (high button) using Waring's Laboratory blender 7010S, the contents were mixed with a sputterer and stirred again for 20 seconds.

4) It was pulverized twice at 15,000 rpm using a hammer mill type atomizer manufactured by Baroin.

number INCI name Classification of raw material function Comparative Example 6 Example 8 Example 9 Example 10 Example 11 Example 12 Example 13 One Dimethicone and triethoxycaprylyl silane surface treatment talc Body pigment (plate shape) To 100.00 To 100.00 To 100.00 To 100.00 To 100.00 To 100.00 To 100.00 2 Triethoxysilyl Polydimethylsiloxy Hexyl Dimethicone Surface Treatment Magnesium / Potassium / Silicon / Fluoride / Hydroxide / Oxide Body pigment (plate shape) 8.00 8.00 8.00 8.00 8.00 8.00 8.00 3 Dimethicone surface treatment boron nitride Body pigment (plate shape) 10.00 10.00 10.00 10.00 10.00 10.00 10.00 4 Polymethylsilsesquioxane Body pigment (spherical) 0.00 1.50 4.00 6.50 9.00 11.50 14.00 5 HDI/trimethylolhexyllactone crosspolymer Body pigment (spherical) 0.00 1.50 4.00 6.50 9.00 11.50 14.00 6 Silica (oil absorption capacity 3.8 ml/g) Body pigment (spherical, oil-absorbing powder) 7.00 7.00 7.00 7.00 7.00 7.00 7.00 7 Stearic acid surface treatment titanium dioxide (average particle diameter 15 nm) white pigment 7.50 7.50 7.50 7.50 7.50 7.50 7.50 8 Dimethicone surface treatment iron oxide (total mass of red iron oxide, yellow iron oxide, and black iron oxide) color pigment 1.80 1.80 1.80 1.80 1.80 1.80 1.80 9 Phenyltrimethicone paid part 5.00 5.00 5.00 5.00 5.00 5.00 5.00 10 Ethylhexylmethoxycinnamate paid part 1.00 1.00 1.00 1.00 1.00 1.00 1.00 11 Octyldodecylstearoylstearate paid part 9.00 9.00 9.00 9.00 9.00 9.00 9.00 12 1,2-Hexanediol paid part 1.00 1.00 1.00 1.00 1.00 1.00 1.00

Experimental Example 1: Measurement of drop stability and hardness

For Examples 1 to 7 and Comparative Examples 1 to 5 (sample groups 1 and 2 for impact resistance test), drop stability and hardness were measured in the following manner.

(1) How to measure drop stability

Examples 1 to 7 and Comparative Examples 1 to 5, which were tableted at a height of 70 cm vertically from a rubber plate having a thickness of 3 mm, were allowed to fall freely. Thereafter, the number of drops was measured until the contents burst out and the tableted state was destroyed. In each of Examples and Comparative Examples, drop stability was measured using five samples, and the average of the measured values is shown in Tables 4 and 5.

(2) Hardness measurement method

The surface hardness of Examples 1 to 7 and Comparative Examples 1 to 5 that were tableted was measured using an ASKER CL-150 constant loader and an ASKER JAL type hardness meter based on JIS K 6301. In each of Examples and Comparative Examples, hardness was measured using five samples, and the average of the measured values is shown in Tables 4 and 5.

Comparative Example 1 Comparative Example 2 Comparative Example 3 Example 1 Example 2 fall stability 1.2 1.6 1.4 2.8 6.4 Hardness 18.2 21.6 20.1 23.6 26.4

When looking at the results of Table 4, Comparative Example 1 without inorganic metal oxide, Comparative Example 2 including zinc oxide having a nanometer-sized diameter, and Comparative Example including titanium dioxide having a micrometer-sized diameter Example 3 showed that the drop stability and hardness were significantly lowered. On the other hand, Examples 1 and 2 containing titanium dioxide having a diameter of nanometer size were found to significantly increase the drop stability and hardness. In particular, the drop stability and hardness of Example 2 containing titanium dioxide having a smaller average particle diameter were remarkably improved. Through this, it was confirmed that it is important to use titanium dioxide among metal oxides and, among them, to use titanium dioxide having a diameter of nanometer size in order to improve tabletting properties and drop stability of the solid cosmetic composition of the present invention.

Comparative Example 4 Comparative Example 5 Example 3 Example 4 Example 5 Example 6 Example 7 fall stability 1.4 1.6 2.4 2.8 3.2 6.2 4.6 Hardness 18.4 19.4 19.8 21.6 26.4 27.8 28.2

When looking at the results of Table 5, in Comparative Example 4 without titanium dioxide and Comparative Example 5 containing 2.5% by weight of titanium dioxide, it was found that the drop stability and hardness were inferior. On the other hand, in Examples 3 to 7 containing 5 to 25% by weight of titanium dioxide having an average particle diameter of 15 nm, it was confirmed that the drop stability and hardness were remarkably improved.

Experimental Example 2: Measurement of optical properties and sensory evaluation

(1) Method of measuring optical properties

For Examples 8 to 13 and Comparative Example 6 (sample group 3 for optical property test and sensory evaluation), light transmission characteristics and opacity were measured as follows.

1) 3 g of each of Examples 8-13 and Comparative Example 6 were prepared and uniformly mixed with 9 g of Acrylic Resin Lacquer manufactured by East Hill Co., Ltd., respectively.

2) After taking an appropriate amount of each of the lacquer dispersions of Examples 8-13 and Comparative Example 6 prepared in 1) on LENETA's 2A black-and-white paper (Opacity chart), using an applicator, apply to a thickness of 60 μm for 24 hours dried.

3) A sample for measurement of 2.5*4 cm was prepared by cutting the dried sample on the black and white paper of 2) above.

4) Using Konica Minolta's Chroma Meter CR400 and Data Processor DP400, the X, Y, and Z Tristimulus Values were measured on the black and white sides of black and white paper, respectively.

5) Measured using 5 samples of each of the Examples and Comparative _Examples , the _opacity ( Y _black / Y _white ) was measured and shown in Table 6. The opacity indicates the degree to which light passes through the sample, and the higher the value, the less light is transmitted.

(2) sensory evaluation method

For Examples 8-13 and Comparative Example 6 (sample group 3 for optical property test and sensory evaluation), sensory evaluation was performed in the following manner. Sensory evaluation was performed on 30 women aged 25-35 years (mean age 29.93 years). First, the Examples 8-13 and Comparative Example 6 were placed on an aluminum plate having an inner diameter of 52 mm and a height of 5 mm from Pauco, and compression tableting using a pneumatic cylinder KB-FA80X100ST from Keon Young Machinery. did. In the compression tableting process, the moving part of the pneumatic cylinder positioned above the plate and the composition contained in the plate is slowly lowered from the top to the bottom to evenly pour the composition in the plate into the plate, and the lowered cylinder is further descended and the composition is evenly distributed in the plate. is divided into two stages of the tableting process of compressing Compression tableting was performed under the conditions of 5 seconds for the input process and 0.55 seconds for the tableting process. During tableting, the maximum value of the pressure on the pressure gauge was found to be impossible to measure during the input process (represented as 0 kgf/cm ² on the gauge), and was a value between 17.5 kgf/cm ² and 22.5 kgf/cm ² during the tableting process. appear. Each of the compressed-powdered cosmetics was provided to the evaluator, and an appropriate amount was applied to the face. According to the following evaluation score criteria, spreadability, coverage, naturalness, and brightness felt when the cosmetic composition was applied were evaluated on a scale of 1 to 5 points. The average value of each item is shown in Table 7.

<Based on evaluation score>

Very Bad: 1, Bad: 2, Average: 3, Good: 4, Very Good: 5

The spreadability refers to the degree to which a cosmetic can be evenly and easily spread when applying the cosmetic. The coverage means the degree to which defects such as unevenness, blemishes, and pigmentation of the skin are not seen. The naturalness refers to the degree to which the applied cosmetics feel different from the evaluator's skin, or white turbidity is not observed, and the artificial makeup film is not revealed. The brilliance refers to the degree to which natural and effective skin tone correction is achieved without artificial feeling by combining the coverage and naturalness of the applied cosmetics.

Comparative Example 6 Example 8 Example 9 Example 10 Example 11 Example 12 Example 13 Y _{black backing} 13.17 12.90 12.34 12.46 11.45 11.69 11.19 Y _{white backing} 66.54 66.48 67.17 66.37 67.13 67.26 66.99 Opacity (Y _black /Y _white ) 0.1980 0.1941 0.1837 0.1878 0.1706 0.1738 0.1670

Comparative Example 6 Example 8 Example 9 Example 10 Example 11 Example 12 Example 13 spreadability 2.47 3.03 3.20 3.60 3.87 4.10 4.30 coverage 3.03 3.07 3.10 3.07 3.20 3.13 3.00 naturalness 2.37 3.07 3.50 3.77 3.77 3.67 3.53 flamboyant 2.27 3.20 3.57 3.93 4.10 3.90 3.73

When looking at the results of Tables 6 and 7, it was confirmed that as the content of the spherical powder increased in Examples 8-13 compared to Comparative Example 6, spreadability, naturalness, and brilliance were remarkably increased, and the coverage was maintained. In particular, in Examples 8 to 13, because the opacity (Y _black / Y _white ) is not high and the light transmittance is high, it is possible to provide a brightly finished cosmetic film, and it was confirmed that their optical properties are remarkably excellent. The reason for the bright makeup effect as described above is that the spherical powder exhibits a blurring effect through refractive transmission, and it is expected that the content of the spherical powder is increased. In addition, as the content of the spherical powder having high spreadability and low friction feeling due to sliding friction compared to the plate-shaped powder in Examples 8 to 13 increased, the spreadability of the cosmetic composition was significantly increased. 1 shows a photograph of Comparative Example 6 and Example 12 applied on the skin of the back of the hand. Referring to FIG. 1 , in Comparative Example 6, the white turbidity of the cosmetic film was remarkable, whereas in Example 12, a natural and excellent cosmetic film was formed.

Claims (9)

It contains a spherical powder, a metal oxide powder, and an oil binder,
A solid cosmetic composition having a particle diameter of 10 to 150 nm of the metal oxide powder. The solid cosmetic composition of claim 1, wherein the spherical powder comprises an oil-absorbing spherical powder. The solid cosmetic composition according to claim 1, wherein the content of the spherical powder is 8 to 45 wt% based on the total weight of the composition. The solid cosmetic composition according to claim 2, wherein the content of the oil-absorbing spherical powder is 2 to 40 wt% based on the total weight of the composition. The solid cosmetic composition according to claim 1, wherein the content of the metal oxide powder is 3 to 40 wt% based on the total weight of the composition. The solid cosmetic composition according to claim 1, wherein the content of the oil binder is 5 to 30% by weight based on the total weight of the composition. The solid cosmetic composition of claim 1, wherein the solid cosmetic composition comprises 70 to 95% by weight of the powder based on the total weight of the composition. The solid cosmetic composition according to claim 7, wherein the powder portion is treated with a surface treatment agent. s1) mixing the spherical powder and the powder part including the metal oxide powder having a particle diameter of 10 to 150 nm;
s2) adding an oil binder to the mixture of s1) and stirring;
s3) pulverizing the mixture of s2) using a pulverizer; and
s4) A method for producing a solid cosmetic composition comprising the step of compression tableting the pulverized product of step s3) using a hydraulic press.

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