JPH0451522B2 - - Google Patents

Description

[Detailed description of the invention]

TECHNICAL FIELD The present invention relates to a novel cosmetic with good makeup persistence. The present invention aims to develop cosmetics that give a soft feeling of use, have excellent transparency, have good affinity with sebum, have an excellent effect on preventing whitening, and have excellent press filling properties and long-lasting makeup. As a result of intensive research, we found that cosmetics containing a specific spherical porous resin powder have all of the above excellent effects and are particularly suitable for make-up cosmetics, and hereby we have published this book. The invention was completed. Conventionally, there are various powders commonly used in cosmetics, but they are limited to talc, sericite, muscovite, etc. from the viewpoint of usability. These natural minerals have irregular grain thickness,
Moreover, because the particles are tightly bound together, air tends to remain in the press, causing cracks in pressed products and various other problems. When powder cosmetics are applied to the skin, the desired cosmetic longevity depends on the amount and rate of absorption of water and oil contained in the powder product. That is, an ideal product can be achieved by finding a powder that has moderately high oil absorption and water absorption, and has the characteristics of fast oil absorption and slow water absorption. However, in current products, it can be said that there is almost no powder that is a decisive factor in satisfying these conditions. Among general powder products, there are few applicable powders with high oil absorption and water absorption, and even when these are high, the speed of oil and water absorption is either fast or slow. The trend remains lopsided. If both the oil absorption and water absorption speeds are high, when a cosmetic is applied to the skin, the skin tends to dry out, and the skin becomes uneven during or after application. Furthermore, if both the oil and water absorption speeds are slow, the sebum secreted from the skin will cause makeup to fade, making it extremely difficult to prevent this. This trend is no exception to the synthetic powders such as inorganic hollow powders and porous powders that have been provided recently. A solution was needed. An object of the present invention is to provide a cosmetic with good makeup persistence that solves the problems of the prior art, and according to the present invention, the above object can be achieved with the following make-up cosmetic. polyvinyl acetate, poly N-vinylpyrrolidone,
poly-2,4-diamino-6-phenyl-1,
Selected from 3,5-triazine, polymethacrylate, polyacrylate, and ethylene-vinyl acetate copolymer, the spherical surface has a maximum pore diameter of 5.
It has large and small pores of ~160 Å, and the particle size is 1~160 Å.
A makeup cosmetic containing spherical porous resin powder having a particle diameter of 40μ and an average particle diameter of 2 to 20μ. The spherical porous resin powder applied to the present invention has a particle size of 1 to 40μ, an average particle size of 2 to 20μ, and has large and small pores with a maximum pore size of 5 to 160Å on the spherical surface. be. The maximum pore diameter of 5 to 160 Å means that the pore diameter that occupies the largest proportion (that is, the pore diameter that forms the peak value of the distribution) is within the range of 5 to 160 Å. (The spherical shape in the present invention naturally includes not only a true spherical shape but also an ellipse and other similar shapes.) The spherical porous resin powder of the present invention itself has transparency (light transmittance). ) and have an affinity for oils, including polyvinyl acetate, poly N-vinylpyrrolidone, poly2,4-diamino-6-phenyl-1,3,5-triazine, and polymethacrylic acid ester (methyl ester, ethyl ester, etc.),
Polyacrylic ester (methyl ester, ethyl ester, etc.), ethylene vinyl acetate copolymer,
can be mentioned. To describe in detail the characteristics of the spherical porous resin powder applied to the present invention, first of all, various powders have been conventionally used in cosmetics, but most of these powders are oil-absorbing. Most of them do not have a high amount of water absorption, are not compatible with oil, and have a slow oil absorption rate. As a result, makeup often comes off in a short period of time due to sebum secretion. Also, some synthetic inorganic powders have a high oil and water absorption rate, but these absorb oil and water at a very high rate, causing skin irritation and dryness, and make-up on dishes. It tends to cause unevenness and impairs the makeup effect. The spherical porous resin powder of the present invention has a large oil absorption amount and water absorption amount, is easily compatible with oil, has a fairly fast oil absorption rate, and has a relatively slow water absorption rate, and has the property of evaporating water, which has a makeup effect. It lasts for a long time, can be applied evenly to the skin, and does not make the skin feel uncomfortable. Second, the spherical porous resin powder used in the present invention has low light scattering on the particle surface and high transparency, so when applied to the skin, even if the particles are fine, it is better than normal powder. Much more transparent and no white cast. Thirdly, unlike conventional inorganic powders, the particles have elasticity, giving them a soft and mellow feel when used. Furthermore, unlike conventional powders, it does not have an irregular shape or uneven thickness, has good spreadability due to the rolling effect, has low resistance on the skin, and has a light feeling of elongation. Fourth, conventional inorganic powders have irregular particle sizes and irregular shapes, and their thickness is uneven, so air tends to remain in pressed products and cracks occur. However, by using the microspheres of the present invention, it becomes easier to form a close-packed structure, so these drawbacks can be prevented. Fifth, attempts have recently been made to synthesize spherical porous inorganic powders and spherical porous resin powders, but compared to the spherical porous powder of the present invention, they have poor transparency and adhesion on the skin. The microspheres of the present invention are superior to conventional inorganic spherical porous powders and spherical hollow porous powders, which are inferior in terms of floating whiteness, elasticity, and uniformity of application to the skin. Sixth, some spherical powders mixed with pigments have been seen up to now, but these not only have a different chemical composition and structure from the spherical resin powder of the present invention, but also have water and oil absorption properties. It is different from the present invention in many respects (e.g., usability, fillability, cost, etc.) and is not related to the present invention. It is something. In addition, as an organic spherical porous powder,
Cosmetics using polyamino acids are disclosed in No. 145527, but as with the above, this product not only differs in chemical composition and physical properties from the spherical porous resin powder of the present invention, but also has practical problems. Due to cost issues, the intended cosmetics cannot be obtained. Next, in order to prove how the spherical porous powder applied to the present invention is ideal compared to conventional powders in obtaining cosmetics with good makeup persistence, Table 1 below shows the results of measuring the amount of oil and water absorption and the rate of oil and water absorption using the microspheres of the present invention and the conventional powder of Examples 1 to 4 described below as samples.

[Table] ◎ Very fast ○ Fast △ Fairly slow × Very slow (Measurement method) Precisely weigh 1 to 5 g of the sample, place it on a glass plate, and add 1 drop of oleic acid (ion-exchanged water) from a bottle every 3 to 7 seconds. Add a drop at a time to the center of the sample, and mix thoroughly with a spatula each time. The dropping and kneading operations are repeated, and the end point is when the whole becomes a hard putty-like lump that can be rolled up into a spiral shape with a steel spatula. Find the amount,
The oil absorption amount and water absorption amount were determined using the following formula. However, if a putty-like lump did not roll up, it suddenly became soft with one drop of oleic acid (ion-exchanged water), and the end point was taken as the end point was just before it became sticky to the glass plate. Note that since the spherical porous divinylbenzene pinhole polymer and the spherical nylon do not get wet with water, an aqueous activator solution was used instead of ion-exchanged water. H: Amount of oleic acid (ml) or amount of ion-exchanged water (ml) S: Weight of collected sample G: Oil absorption amount or water absorption amount G = H/S x 100 To measure oil absorption rate and water absorption rate, use a fixed amount. The material was press-filled into a cell, a certain amount of water or oil droplets were dropped on the surface of the cell, the rate of absorption was measured, and the results were categorized and displayed. As is clear from Table 1 above, the conventionally widely used groups of talc, sericite, and kaolin have low oil absorption and water absorption, and talc is said to have a very slow water absorption rate. Since the oil absorption rate is also quite slow, makeup tends to come off easily, and sericite and kaolin have a very slow oil absorption rate and a very fast water absorption rate, so they are the most difficult to make makeup last. In addition, in the case of conventional inorganic powders other than these, the amount of oil absorption and water supply are extremely high, and both the oil absorption and water absorption speed are fast, so there is a feeling of dryness after applying makeup, and there is no unevenness during or immediately after application. Tsuki is noticeably exposed. Furthermore,
Conventionally known organic powders and organic porous powders have low oil absorption and water absorption, and their oil absorption speed is very fast and water absorption speed is very slow. The deterioration progresses in a shorter period of time, and the longevity of the makeup is poor. On the other hand, the microspheres of the present invention have higher oil and water absorption than talc, which is a practical powder, and satisfy the desired characteristics of high oil absorption speed and slow water absorption speed, making them truly ideal. It can be said to be a fine powder. Here, FIG. 1 shows an electron micrograph (3000 times: particle diameter approximately 22 μm) showing the particle structure of the spherical porous resin powder (polymethyl methacrylate) according to the present invention. It can be seen from FIG. 1 that the spherical porous resin powder has a porous structure. Furthermore, as a comparative example, an electron micrograph (30,000 times: particle diameter approximately 7 μm) showing the particle structure of a commercially available nylon SPM manufactured by a melting method utilizing agglomeration due to surface tension is shown in FIG. It can be seen that the particles shown in FIG. 2 do not have the porous structure that the spherical porous resin powder of the present invention has. A pore distribution diagram of the spherical porous resin powder is shown in FIG. Figure 3 shows the spherical porous resin powder.
It was calculated and illustrated using the Kelvin equation from the water vapor adsorption isotherm at °C according to Anderson's method. The water vapor adsorption isotherm was measured by a gravimetric method (Kinoshita water adsorption measuring device KR-380).
In FIG. 3, the horizontal axis shows the pore diameter in angstroms, and the vertical axis shows the capacity of pores in the range of the pore diameter on the horizontal axis in %. From the pore distribution diagram in FIG. 3, it is clear that pores in the 70-110 Å range predominate. Furthermore, in order to confirm the usability of the spherical porous resin powder of the present invention as a cosmetic, the present inventor used the microspheres used in Examples 1 to 4 described later and a conventional powder to Tables 2 and 3 show the results of use tests for Examples 1 and 2) as such and in cosmetics (Examples 1 to 4) using comparative products as a control. The usage test items were: A: Soft and smooth feel, B: Uniformity of application to the skin, C: Transparency,
D: Whiteness floating, E: Adhesion, F: Makeup lasting,
G: Overall evaluation (only in cosmetics).

【table】

[Table] Next, examples of the cosmetics of the present invention with good long-lasting makeup will be described. The proportions used are parts by weight. Example 1 Phase powder: 80.0 parts of spherical porous polyvinyl acetate (particle size: approx. 13μ, average particle size: approx. 6μ, maximum pore size: 120Å), 5.0 parts of silica powder, 5.0 parts of sericite, 2.0 parts of microcrystalline cellulose, 4.2 parts of talc. and 0.3 part of Bengara were mixed in a Henschel mixer and then ground in a grinder.
While stirring this again with the Henschel mixer,
1.5 parts of liquid paraffin and 2.5 parts of isopropyl myristate were added to this and mixed with stirring for 10 minutes. 0.5 part of fragrance was added and mixed with stirring for 3 minutes. The mixture was homogenized using a blower sifter and filled into a container to obtain a phase powder of the present invention. Example 2 Pressed powder A mixture of spherical porous ethylene vinyl acetate copolymer and polyN-vinylpyrrolidone (particle size approximately 13μ,
Average particle size approximately 6μ, maximum pore size 120Å) 5.0 parts, talc
After stirring and mixing 49.3 parts of sericite, 10.0 parts of sericite, 3.0 parts of aluminum stearate, 2.0 parts of kaolin, and 0.2 parts of Bengara in a ribbon blender for 30 minutes, the mixture was pulverized in a pulverizer. While stirring the pulverized product with a Henschel mixer, add 2.0 parts of squalane and 2-
3.0 parts of octyldodecyl myristate was added and mixed with stirring for 12 minutes. Further, 0.5 part of fragrance was added and stirred and mixed for 4 minutes. The mixture was homogenized using a blower sifter and filled into a medium tray using a filling machine to obtain a pressed powder of the present invention. Example 3 Emulsified foundation 4.4 parts of spherical porous poly-2,4-diamino-6-phenyl-1,3,5-triazine (particle size 20 μ, average particle size 5 μ, maximum pore size 60 Å), stearic acid
1.8 parts squalane, 1.0 parts 2-octyldodecyl myristate, 2.0 parts nonionic activator, 21.0 parts pigment paste, 0.1 part butylparaben, and B.
Mix 0.05 parts of H.T, heat to 85℃, add 8.0 parts of 1,3-butylene glycol and thickener to this with stirring.
A mixture of 0.2 parts of methylparaben, 0.7 parts of triethanolamine, and 55.05 parts of purified water was heated to 90° C. and emulsified while gradually adding the mixture. The mixture was cooled with stirring and 0.5 part of fragrance was added at 45°C. Stirring was continued up to 35°C and the mixture was filled into a container to obtain an emulsified foundation of the present invention. Example 4 Compact foundation 6.1 parts of ozokerite, 7.1 parts of ceresin, lanolin
3.2 parts, microcrystalline wax 1.6 parts, isopropyl myristate 15.0 parts, squalane 3.0 parts
1 part, 0.3 part nonionic activator and dye paste
While heating 53.2 parts of the mixture to 80°C and stirring, add 10.0 parts of spherical porous polymethyl methacrylate (particle size: approx. 13μ, average particle size: approx. 7μ, maximum pore size: 80Å).
portion was added little by little until well dispersed. Further, while stirring, the mixture was left to cool to 70°C, and the cooled mixture was filled into a container to obtain a compact foundation. Reference example 1 Cosmetic cream Ethylene vinyl acetate copolymer (particle size approximately 8μ,
Average particle diameter approximately 3 μ, maximum pore diameter 20 Å) 3.0 parts, squalane 7.5 parts, isopropyl myristate 5.0 parts, triglyceride 2.5 parts, wax wax 2.0 parts, lanolin 1.0
A mixture of 1 part, 4.5 parts of nonionic activator, 0.02 part of BHT, 0.1 part of butylparaben, and 0.18 part of pigment base was heated and dissolved at 80°C. Add this to 80℃ with stirring, 5.1 parts of glycerin, 0.1 part of methylparaben, and 1.0 part of thickener.
0.3 parts of neutralizing agent and 67.5 parts of distilled water.
The solution at 85°C was gradually added. 80℃ for 5 minutes
It was then cooled with water to 40°C. Add fragrance to this
0.2 part was added and cooled to 30°C. A cream was obtained as a reference example separately from the makeup cosmetic of the present invention by filling it into a container. As detailed above, the cosmetic with good long-lasting makeup of the present invention prevents makeup from fading after being applied to the skin, has excellent uniformity of application to the skin, is transparent, prevents white cast, and is suitable for makeup makeup. It exhibits a remarkable variety of effects as a food ingredient.
The present invention provides a make-up cosmetic that has a soft and smooth feel and excellent filling properties.

[Brief explanation of the drawing]

Fig. 1 is an electron micrograph showing the particle structure of the spherical porous resin powder of the present invention, Fig. 2 is an electron micrograph showing the particle structure of nylon SPM produced by the melting method (comparative example), and Fig. 3 is a pore distribution diagram of the spherical porous resin powder of the present invention.

Claims (1)

[Claims] polyvinyl acetate, poly N-vinylpyrrolidone,
poly-2,4-diamino-6-phenyl-1,
Selected from 3,5-triazine, polymethacrylate, polyacrylate, and ethylene-vinyl acetate copolymer, the spherical surface has a maximum pore diameter of 5.
It has large and small pores of ~160 Å, and the particle size is 1~160 Å.
A make-up cosmetic comprising spherical porous resin powder having a particle size of 40μ and an average particle diameter of 2 to 20μ.