JP2000072624A - Solid powdery cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a solid powdery cosmetic easily takable with a toilet set such as sponge and mat in use, having excellent adhesivity to the skin, giving smooth and soft feeling to the skin and exhibiting excellent moldability and impact resistance by including a specific solid oil powder and an elastic powder. SOLUTION: This solid powdery cosmetic contains (A) a non-spherical solid oil powder having a melting point of 85-125 deg.C and an average particle diameter of 0.1-10 μm (e.g. Fischer-Tropsch wax or microcrystalline wax) and (B) an elastic powder (preferably powder of a material having a hardness of 40-80 measured by spring hardness test described in JIS K6301, e.g. urethane). The amounts of the component A and the component B in the cosmetic are preferably 0.25-15 wt.% and 0.5-20 wt.%, respectively, and the weight ratio of A:B is preferably 0.5:1 to 1:0.25. The total oil content excluding the component A is preferably <=5 wt.%.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sponge, a mat, and other props that can be easily used, has a smooth and soft feeling of use, has excellent adhesion to the skin, and has good moldability and durability. The present invention relates to a solid powder cosmetic having excellent impact properties.

[0002]

2. Description of the Related Art Conventionally, solid powder cosmetics such as pressed foundations have a method of compounding a large amount of an oil agent, a method of compounding a viscous substance, and allowing powder to adhere to each other by a cohesive force of the powder. Solids were formed by various techniques such as a method and a mechanical method such as increasing a compression pressure. In addition, elastic powders have been used in order to improve the traction to props such as mats during use and to realize a smooth and soft feeling of use.

[0003]

However, if a large amount of an oil or a sticky substance is added to the solid powder cosmetics, the use of such materials as sponges or mats during use deteriorates, the stickiness on the skin, and the spread of the spread. There were sensual problems such as poor skin feel, burden on the skin, and poor persistence of makeup. On the other hand, solid cosmetics containing only a small amount of oil in order to satisfy the training on the props and the sensory surface have a problem of insufficient strength such that the impact resistance is weak, and they break when transported or carried. In the method utilizing the cohesive force of the powder, the feeling of touch is poor due to the limitation of the powder that can be used. Also, in the method of mechanically compressing under high pressure, there are limitations on the powders and filling containers that can be used, and furthermore, the impact resistance is improved, but the training on props such as sponges and mats is deteriorated. There is a problem that molding cannot be performed when an elastic powder is mixed. Furthermore, in order to improve the training for props such as mats, and to realize a smooth and soft feeling of use, when elastic powder is blended, the elastic powder absorbs the compressive force at the time of molding. In addition, there is a problem that the compression moldability is deteriorated, and as a result, the impact resistance is reduced. Therefore, development of a solid powder cosmetic which has solved these problems has been desired.

[0004]

The inventor of the present invention has conducted intensive studies on the above-mentioned actual situation, and as a result, by using a combination of a specific solid oil powder and an elastic powder, a sponge, a mat or the like can be used at the time of use. It has been found that a solid powder cosmetic which has a good tore, has excellent adhesion to the skin, has a smooth and soft feeling of use, and has excellent moldability and impact resistance can be obtained, and has completed the present invention. .

That is, according to the present invention, the following components (a) and (b): (a) a melting point of 85 to 125 ° C. and an average particle size of 0.
The present invention relates to a solid powder cosmetic containing 1 to 10 µ of non-spherical solid oil powder (b) elastic powder. Furthermore,
Component (a) is 0.25 to 15% by weight, and component (b) is 0.1% by weight.
The solid powder cosmetic composition described above, wherein the amount is 5 to 20% by weight, and the mixing weight ratio of the two is component (a): component (b) = 0.5: 1 to 1: 0.25. The present invention also relates to the solid powder cosmetic having a total oil content of 5% by weight or less excluding the component (a).

Hereinafter, the configuration of the present invention will be described. The solid oil powder of the component (a) used in the present invention has a melting point of 8%.
Non-spherical solid oil powder having a temperature of 5 to 125 ° C. and an average particle size of 0.1 to 10 μm, for example, synthetic hydrocarbons such as Fischer-Tropsch wax, polyethylene wax, ethylene propylene copolymer, and minerals such as microcrystalline wax. Obtained by finely pulverizing solid oil having a melting point of 85 to 125 ° C., such as hydrocarbons and waxes derived from plants such as carnauba wax.

[0007] The method for pulverizing the solid oil is not particularly limited, but mechanical and chemical pulverization methods, which are generally known pulverization methods, can be used. For example, examples of the mechanical pulverization method include a jet mill, a hammer mill, a pin mill, a ball mill, a bead mill, a micros, an ong mill, a hybridizer, mechanofusion, and the like. And a method of spray-drying a solution obtained by dissolving the solution in water, a method of phase-separating a solid oil from the solution, a method of emulsifying the solution with water and drying as a microemulsion. Further, these mechanical pulverization and chemical pulverization may be used in combination. After the pulverization, if necessary, the solid oil powder can be classified until a desired average particle diameter is obtained.

[0008] The solid oil powder of the component (a) is prepared by a laser diffraction type particle size distribution analyzer (SK laser micron sizer).
The average particle size measured by Seishin Enterprise Co., Ltd.) is 0.1 to
10 μm, and more preferably 0.5 to 7 μm. When the average particle size is less than 0.1 μm, the cohesive force between the particles of the solid oil powder becomes strong, and the dispersion in the solid powder cosmetic becomes difficult, and the adhesion to the skin increases, and the cosmetic application is performed. It is not preferable because it sometimes causes defects such as lack of smoothness. On the other hand, if the average particle size exceeds 10 μm, the adhesion between the particles becomes weak, and it is not preferable to improve the moldability and strength of the solid powder cosmetic.

The shape of the solid oil powder of the component (a) is as follows:
Non-spherical. A spherical shape has a low effect of improving the moldability of the solid powder cosmetic, and a non-spherical shape has a superior effect of improving the moldability and strength of the solid powder cosmetic.

The non-spherical particles refer to particle shapes other than spherical, such as plate, flake, rod, needle, cubic,
Amorphous and the like. One or more of these solid oil powders of component (a) can be used.

The amount of the solid oil powder of the component (a) in the solid powder cosmetic of the present invention depends on the amount of the component (b), but is generally about 0.25 to 15% by weight (hereinafter simply referred to as " % "), More preferably 0.5 to 1
0%. When the amount is within this range, the effects of the present invention such as moldability and strength are further improved.

The elastic powder of the component (b) used in the present invention has a hardness in a spring-type hardness test described in JIS K6301 (hereinafter, simply referred to as "JIS hardness") of 40 to 80. It is a powder of a certain material. If the JIS hardness is less than 40, the adhesive strength is increased, the dispersibility is reduced, and a sticky feeling is produced on the skin, which is not preferable. On the other hand, if the JIS hardness exceeds 80, a soft feeling in use is reduced, which is not preferable. Such materials include organopolysiloxane elastomers (JI
S hardness: 40-60) or fluorosilicone rubber (JIS
Silicone rubbers such as hardness: -70-), urethanes (JIS hardness: 60-75), acrylic rubbers (JIS)
Hardness: ~ 70-), fluoro rubbers, etc. (JIS hardness: 40)
To 78), and among them, organopolysiloxane elastomers and urethanes are preferable from the viewpoint of smooth and soft feeling of use.

The particle size of the elastic powder of the component (b) is from 0.1 to
100μ is preferred, and 0.5-20μ is more preferred.
Within this range, the effects of the present invention, such as smooth and soft feeling of use, are further improved. The particle shape is preferably spherical. These powders are commercially available as Trefil E50
5, E506, E-701 (both manufactured by Dow Corning Toray Silicone Co., Ltd.), Art Pearl (manufactured by Nikko Chemtech) and the like.

The amount of the elastic powder of the component (b) in the solid powder cosmetic of the present invention depends on the amount of the component (a), but is generally preferably 0.5 to 20%, more preferably 1 to 20%. If it is in this range of 10% to 10%,
It has a smooth and soft feeling of use, and improves moldability and strength.

The compounding weight ratio of component (a) to component (b) in the solid powder cosmetic of the present invention is preferably component (a): component (b) = 0.5: 1 to 1: 0.25. Within this range, smooth and soft feeling of use, moldability and strength are further improved.

The solid powder cosmetic of the present invention may optionally contain an oil other than the component (a). As the oil, animal oils, vegetable oils, synthetic oils and other sources, solid oils, semi-solid oils, liquid oils, volatile oils and other properties, hydrocarbons, oils and fats, waxes, hardened oils, Examples include ester oils, fatty acids, higher alcohols, silicone oils, fluorinated oils, lanolin derivatives and the like. In the case of solid oils, these are dissolved in other liquid oils and used. Specifically, hydrocarbons such as liquid paraffin, squalane, petrolatum, polyisobutylene, polybutene, paraffin wax, ceresin wax, microcrystalline wax, mokurou, montan wax, fishatrops wax, olive oil, castor oil, jojoba oil, Fats such as mink oil and macadamian nut oil, beeswax, lanolin, carnauba wax, candelilla wax, waxes such as gay wax, cetyl isooctanoate, isopropyl myristate, isopropyl palmitate, octyl dodecyl myristate, glyceryl trioctanoate , Diglyceryl diisostearate, diglyceryl triisostearate, glyceryl tribehenate, pentaerythritol rosinate, neopentyl glycol dioctanoate, Cholesterol fatty acid esters, N- lauroyl -L- esters such as glutamic acid di (cholesteryl behenyl octyldodecyl)
Stearic acid, lauric acid, myristic acid, behenic acid, isostearic acid, oleic acid, rosin acid, 12-
Fatty acids such as hydroxystearic acid, stearyl alcohol, cetyl alcohol, lauryl alcohol, oleyl alcohol, isostearyl alcohol, higher alcohols such as behenyl alcohol, low polymerization degree dimethylpolysiloxane, high polymerization degree dimethylpolysiloxane, methylphenylpolysiloxane, Decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, crosslinked organopolysiloxane, silicones such as fluorine-modified silicone, perfluoropolyether, perfluorodecane, fluorine oils such as perfluorooctane,
Lanolin derivatives such as lanolin, lanolin acetate, isopropyl lanolin fatty acid, and lanolin alcohol, and the like, and one or more of these can be used.

If the total amount of oil other than the component (a) in the solid powder cosmetic of the present invention is 5% or less, the moldability and impact resistance are improved while having a smooth and soft feeling of use. The effect of the present invention is more exhibited.

The solid powder cosmetic of the present invention may optionally contain a powder other than the above components (a) and (b). The powder is not particularly limited by a shape such as a spherical shape, a plate shape, and a needle shape, a fume shape, a fine particle, a particle size such as a pigment grade, and a particle structure such as porous and nonporous. , Brilliant powders, organic powders, pigment powders, composite powders, and the like. Specifically, titanium oxide, black titanium oxide, konjo, ultramarine, red iron oxide, yellow iron oxide, black iron oxide, zinc oxide, aluminum oxide, silicon dioxide, magnesium oxide, zirconium oxide, magnesium carbonate,
Calcium carbonate, chromium oxide, chromium hydroxide, carbon black, aluminum silicate, magnesium silicate,
Aluminum magnesium silicate, mica, synthetic mica, synthetic sericite, sericite, talc, kaolin,
Bright powders such as inorganic powders such as silicon carbide, barium sulfate, bentonite, smectite, and boron nitride, bismuth oxychloride, mica titanium, iron oxide-coated mica, iron oxide mica titanium, organic pigment-treated mica titanium, and aluminum powder , Nylon powder, polymethyl methacrylate, acrylonitrile-methacrylic acid copolymer powder, vinylidene chloride-methacrylic acid copolymer powder, polystyrene powder, polymethylsilsesquioxane powder, wool powder, silk powder, crystalline cellulose, N- Organic powders such as acyl lysine, pigment powders such as organic tar pigments, organic pigment lake pigments, fine titanium oxide-coated mica titanium, fine zinc oxide-coated mica titanium, barium sulfate-coated mica titanium, titanium dioxide-containing silicon dioxide , Oxide Composite powder such containing silicon dioxide,
And the like, and one or more of these can be used.

In the solid powder cosmetic of the present invention, in addition to the above essential components, components usually used in cosmetics include, for example, aqueous components, surfactants, oil gelling agents, antioxidants,
An ultraviolet absorber, a fragrance, a preservative, a beauty agent and the like can be blended within a range that does not impair the effects of the present invention.

The solid powder cosmetic of the present invention includes foundation, white powder, blusher, concealer, eyeshadow, eyeliner, eyebrow, lipstick and the like.

[0021]

EXAMPLES The present invention will be further described with reference to the following examples, but the present invention is not limited thereto.

Production Example 1 Amorphous Solid Oil Powder A Fischer-Tropsch wax having an average particle diameter of 5 mm and a melting point of 120 ° C. was pulverized by a pin mill to obtain a coarse pulverized product. The average particle size of the coarsely pulverized product was measured by a laser diffraction type particle size distribution analyzer and found to be 60 μm. Next, the coarsely pulverized product was further finely pulverized with a single track jet mill to obtain a solid oil powder having an average particle diameter of 3 μm. Further, as a result of observing the particle shape of this solid oil powder with an electron microscope, it was found to be irregular.

Production Example 2: Flaky solid oil powder A flake crystal mass having an average particle diameter of 10 mm or more and a melting point of 12
Fischer-Tropsch wax at 0 ° C. was pulverized with a pin mill to obtain a coarsely pulverized product. As a result of measuring the average particle diameter of this coarsely pulverized product with a laser diffraction type particle size distribution analyzer,
It was 100μ. Next, the coarsely pulverized product was further finely pulverized by a single track jet mill to obtain a solid oil powder having an average particle diameter of 6 μm. Further, as a result of observing the particle shape of this solid oil powder with an electron microscope, it was found to be flaky.

Production Comparative Example 1: Spherical solid oil powder A bulk ethylene propylene copolymer having a melting point of 115 ° C. (Petrolite CP-7 manufactured by Barico) was dissolved in n-hexane, and this solution was subjected to a disk type spray dry. It was anger-dried to obtain a solid oil powder. The average particle size of this solid oil powder was measured by a laser diffraction type particle size distribution analyzer, and as a result, it was 8μ. The particle shape of the solid oil powder was spherical as a result of observation of the particle shape with an electron microscope.

Examples 1 to 6 and Comparative Examples 1 to 4: Pressed powder foundation A pressed powder foundation having the composition shown in Table 1 below was prepared, and (1) training on a sponge, (2) smooth and soft use Evaluation items of the feeling, (3) adhesion to skin, and (4) impact resistance (fall strength) were evaluated by the following methods. The results are shown in Table 1.

[0026]

[Table 1]

(Manufacturing method) Components 15 to 20 are dissolved, mixed and dispersed. B. Components 1 to 14 are mixed and dispersed. C. Add A to B, mix and grind. D. C was pressed on a gold plate to obtain a pressed powder foundation.

[Evaluation items (1) to (3) and evaluation method] Fifty women with more than 10 years of makeup history were used as panels.
(1) Training on sponge, (2) Smooth and soft feeling of use, (3) Adhesion to skin, and the number of people who felt that each evaluation item was good were evaluated according to the following criteria (A).

(Criterion A) Number of people who felt good 40 or more: ◎ 30 to 39: ○ 20 to 29: △ 19 or less: ×

[Evaluation item (4) and its evaluation method] As a method for evaluating impact resistance, a sample was pressed with a metal plate under the same molding conditions, set in a compact container, and set in a compact container from a height of 50 cm. Was dropped, and the pressed product at that time was visually evaluated according to the following four criteria (B).

(Criterion B) No change: ◎ Slight cracks on the surface of the filled product: ○ Vivid or chipped to the inside of the filled product: △ Filled product is broken into pieces: ×

As is clear from the results in Table 1 above, the pressed powder foundations of Examples 1 to 6 of the product of the present invention have a lower amount of sponge than the pressed powder foundations of Comparative Examples 1 to 4. It had good, smooth, soft feeling of use, good adhesion to the skin, and good moldability, so it had high impact resistance and strong drop strength.

Example 7: Pressed white powder (component) (%) Mica 20.0 2. 2. Talc remaining 3. Organopolysiloxane elastomer (Note 1) 10.0 Titanium mica 10.0 5. Spherical silica 8.0 6. Red No. 226 0.57. Ultramarine 0.28. 8. Amorphous solid oil powder of Production Example 1 15.0 Squalane 1.0 10. Glyceryl trioctanoate 0.511. Preservative appropriate amount 12. Appropriate amount of fragrance

(Manufacturing method) Components 9 to 12 are mixed and dispersed. B. Components 1 to 8 are mixed and dispersed. C. Add A to B, mix and grind. D. C was pressed on a metal plate to obtain a pressed white powder. The pressed white powder of Example 7 obtained as described above is
It had good puffing, had a smooth and soft feeling of use, had good adhesion to the skin, and had good impact resistance due to good moldability, and had excellent drop strength.

Example 8: Pressed Eye Shadow (Component) (%) 1. Mica balance Talc 20.0 3. 3. Mica titanium 5.0 Boron nitride 5.0 5. Urethane powder (Note 3) 3.0 6. Porous spherical silica 5.0 7. Ultramarine 2.08. Yellow No. 401 0.59. 9. Flaky solid oil powder of Production Example 2 5.0 Squalane 2.0 11. Vaseline 1.0 12. Dimethylpolysiloxane 3.0 13. Preservative appropriate amount

(Manufacturing method) Components 10 to 13 are mixed and dispersed. B. Components 1 to 9 are mixed and dispersed. C. Add A to B, mix and grind. D. C was pressed on a metal plate to obtain a pressed eye shadow. The pressed eyeshadow of Example 8 obtained as described above has good traceability to chips, has a smooth and soft feeling of use, has good adhesion to the skin, and has good moldability. Therefore, the impact resistance was high and the drop strength was excellent.

Example 9: Pressed Foundation (Component) (%) 1. Silicone treated talc remaining amount 2. Siliconized mica 20.0 3. Siliconized titanium mica 5.0 4. Siliconized titanium oxide 13.0 Silicone treated bengala 0.86. Silicone-treated yellow iron oxide 2.5 7. 7. Siliconized black iron oxide 0.3 Organopolysiloxane elastomer (Note 2) 5.0 9. Spherical polystyrene 5.0 10. 10. Amorphous solid oil powder of Production Example 1 15.0 Perfluoropolyether 3.0 12. Dimethyl polysiloxane 2.0 13. Octyl methoxycinnamate 7.0 14. Oxybenzone 0.5 15. Polyoxyalkylene alkyl co-modified organopolysiloxane (Note 5) 0.516. Preservatives qs * Note 5: Abil EM-90 (Gold Schmidt)

(Manufacturing method) Components 11 to 16 are mixed and dispersed. B. Components 1 to 10 are mixed and dispersed. C. Add A to B, mix and grind. D. C was pressed on a gold plate to obtain a pressed foundation. The pressed foundation of Example 9 obtained as described above has high cosmetic durability, has a smooth and soft feeling of use, has good adhesion to the skin, and has good impact resistance due to good moldability. It had excellent properties and strong drop strength.

[0039]

EFFECT OF THE INVENTION The solid powder cosmetic composition of the present invention has good traceability to props such as sponges and mats, has a smooth and soft feeling of use, has good adhesion to the skin, and has good press moldability. It was a solid powder cosmetic having excellent molded article and high impact resistance.

Claims (3)

[Claims] 1. The following components (a) and (b): (a) a melting point of 85 to 125 ° C. and an average particle size of 0.
A solid powder cosmetic comprising 1 to 10 μm of non-spherical solid oil powder (b) elastic powder. 2. Component (a) is 0.25 to 15% by weight, component (b) is 0.5 to 20% by weight, and the compounding weight ratio of both is component (a): component (b). = 0.5: 1 to 1:
The solid powder cosmetic according to claim 1, which has a ratio of 0.25. 3. The solid powder cosmetic according to claim 1, wherein the total oil content excluding the component (a) is 5% by weight or less.