JP2002275033A - Solid powder cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To erase a solid powder cosmetic excellent in spreadability and finished gloss feeling, free from causing a so-called caking phenomenon which solidifies a surface when it is rubbed with a small utensil such as a mat, a chip, or the like, and having excellent falling strength. SOLUTION: The solid powder cosmetic contains a component (a) of >=50 mass % of a flaky powder, a component (b) of polytetrafluoroethylene powder and a component (c) of a spherical powder. Further, the solid powder cosmetic contains an oil as the component (d). Further, the solid powder cosmetic has the content of the component (d) of 1-5 mass. Furthermore, the solid powder cosmetic has the content of the component (d) of 15-30 mass %. Further, any one of the above solid powder cosmetics contains a powdery wax as a component (e).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid powder cosmetic containing 50% by mass or more of a plate-like powder, a polytetrafluoroethylene powder and a spherical powder. The present invention relates to a solid powder cosmetic material which has an excellent glossiness and does not cause the phenomenon that the surface hardens when the surface is rubbed with a prop such as a mat or a chip, so-called caking phenomenon, and also has excellent drop strength. .

[0002]

2. Description of the Related Art A solid powder cosmetic is a cosmetic preparation having good portability applied to makeup cosmetics such as eyeshadow, blusher, foundation and the like. In these makeup cosmetics, glossiness of finish is an important quality item, and plate-like powders such as mica and titanium mica are generally used as glittering powders. However, plate-like powders such as mica and mica titanium have a plate-like shape, and therefore have poor compression moldability.
It was necessary to use a large amount of oil.

[0003]

However, when a large amount of an oil agent is blended into the solid powder cosmetic, the spread of the cosmetic at the time of applying the cosmetic becomes poor, and in some cases, a caking phenomenon may be caused. For this reason, it was also known to use a spherical powder in combination as an anti-caking agent,
Since the spherical powder weakens the bonding force between the powders, the drop strength may decrease. For this reason, the spread is good,
It has been desired to develop a solid powder cosmetic which is excellent in glossiness of the finish, does not cause a caking phenomenon, and has excellent drop strength.

[0004]

Under these circumstances, the present inventors have conducted intensive studies and as a result, have found that a polytetrafluoroethylene powder is added to a solid powder cosmetic containing 50% by mass or more of a plate-like powder and a spherical powder. The present inventors have found that the above problems can be solved by using a fluoroethylene powder in combination, and have completed the present invention.
In a relatively small region where the content of the oil agent is 1 to 5% by mass, the polytetrafluoroethylene powder acts as a binder between the powders, improves the drop strength, and reduces the oil agent content to 15 to 30%. In a relatively large mass% region, the present invention has been found to work as an oil-repellent powder and prevent caking, thereby completing the present invention.

That is, the present invention provides the following components (a) to
(C); (a) 50% by mass or more of a plate-like powder; (b) a polytetrafluoroethylene powder; and (c) a spherical powder. Further, the present invention provides the solid powder cosmetic, further comprising an oil agent as the component (d). Furthermore, the present invention provides the solid powder cosmetic, wherein the content of the component (d) is 1 to 5% by mass. Furthermore, the content of the component (d) is 15 to 30.
% By mass. Further, the present invention provides any one of the above solid powder cosmetics, which further comprises a powdery wax as the component (e).

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
The plate-like powder of the component (a) used in the present invention is a powder which gives good elongation and spread and gives a glossy finish to the solid powder cosmetic of the present invention. The aspect ratio (plate ratio) of the plate-like powder of the component (a) is preferably from 10 to 50,
The average particle diameter is preferably from 1 to 100 μm. Such components (a) include natural mica, calcined mica, synthetic mica,
Natural sericite, synthetic sericite, titanium mica, iron oxide treated mica, iron oxide treated mica titanium, organic pigment coated mica titanium, barium sulfate, boron nitride powder, bismuth oxychloride, plate alumina, aluminum powder, etc. And one or more of these can be used. These powders may be surface-treated by a generally known method such as silicones, fluorine compounds, metal soaps, oils and the like in order to improve dispersibility and adhesion.

[0007] The content of the component (a) in the solid powder cosmetic of the present invention is set at 5 to increase the gloss of the finished product.
It is essential that the content be 0% by mass (hereinafter simply abbreviated as "%"), but 50 to 95% is preferable.

The polytetrafluoroethylene powder of the component (b) used in the present invention is a polymer of ethylene tetrafluoride, a powder mainly composed of polytetrafluoroethylene, and has a low surface tension. It is excellent in lubricity as described above, and in the solid powder cosmetic of the present invention, it has good elongation and spread and enhances drop strength. The average particle size of the component (b) is preferably from 0.1 to 50 μm, particularly preferably from 1 to 10 μm, from the viewpoint of usability such as elongation and spread. Further, the shape of the polytetrafluoroethylene powder used for the component (b) may be spherical, amorphous, or the like. In order to more effectively improve the drop strength,
It is preferably non-spherical. In addition, since component (b) is water- and oil-repellent, it also has properties that make it more durable than organic resin powders such as polymethyl methacrylate and silicone resin powders and inorganic powders such as silica. It is a powder. Such a component (b) is commercially available as FLUO
ROPLE 103C (manufactured by Shamrock: average particle diameter 5 μm, amorphous) or the like can be used.

The content of the component (b) in the solid powder cosmetic of the present invention is preferably 0.5 to 30%, more preferably 1 to 2%.
0% is particularly preferred. When used in this range, it is possible to obtain a solid powder cosmetic which has good elongation and spread and more excellent drop strength.

[0010] The spherical powder of the component (c) used in the present invention is intended to improve spreadability and prevent caking in the solid powder cosmetic of the present invention. The average particle diameter of the component (c) is preferably from 1 to 50 μm, particularly preferably from 3 to 30 μm, from the viewpoint of usability such as elongation and spread. As such component (c), organic spherical resin powders such as nylon, styrene, methyl methacrylate, polymethylsilsesquioxane powder, and organopolysiloxane elastomer powder, silica, alumina, titanium oxide, magnesium carbonate, silicate Examples thereof include inorganic spherical powders such as calcium, and one or more of these can be used. These powders may be surface-treated by a generally known method such as silicones, fluorine compounds, metal soaps, oils and the like in order to improve dispersibility and adhesion.

[0011] The content of the component (c) in the solid powder cosmetic of the present invention is preferably 0.1 to 20%, more preferably 0.5 to 20%.
-10% is particularly preferred. When used in this range, it is possible to obtain a solid powder cosmetic which has good elongation and spread and more excellent drop strength.

The oil component (d) used in the present invention comprises:
In the solid powder cosmetic of the present invention, a component that improves the feeling of adhesion to the skin and improves the drop strength by binding the powders to each other, is an oil agent usually used in cosmetics, animal oil, vegetable oil, Origin of synthetic oil, etc., and solid oil,
Regardless of the properties of semi-solid oil, liquid oil, volatile oil, etc., hydrocarbons, oils and fats, waxes, hardened oils, ester oils, fatty acids, higher alcohols, silicone oils, fluorine oils And lanolin derivatives. Specifically, hydrocarbons such as liquid paraffin, squalane, petrolatum, polyisobutylene, polybutene, paraffin wax, ceresin wax, microcrystalline wax, mokuro, montan wax, olive oil, castor oil, jojoba oil, mink oil, macadamian Fats and oils such as nut oil,
Beeswax, carnauba wax, candelilla wax, waxes such as gay wax, cetyl isooctanoate, isopropyl myristate, isopropyl palmitate,
Octyldodecyl myristate, glyceryl trioctanoate, polyglyceryl diisostearate, diglyceryl triisostearate, glyceryl tribehenate, pentaerythritol rosinate, neopentyl glycol dioctanoate, cholesterol fatty acid ester,
N-lauroyl-L-glutamic acid di (cholesteryl.
Esters such as behenyl octyldodecyl), fatty acids such as stearic acid, lauric acid, myristic acid, behenic acid, isostearic acid, oleic acid, 12-hydroxystearic acid, stearyl alcohol, cetyl alcohol, lauryl alcohol, oleyl alcohol, Higher alcohols such as isostearyl alcohol and behenyl alcohol, low polymerization degree dimethylpolysiloxane, high polymerization degree dimethylpolysiloxane, methylphenyl polysiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, polyether-modified polysiloxane, polyoxy Alkylene / alkyl methyl polysiloxane / methyl polysiloxane copolymer, alkoxy-modified polysiloxane, cross-linked organopolysiloxane, fluorine-modified poly Silicones such as roxane; fluorinated oils such as perfluorodecane, perfluorooctane and perfluoropolyether; lanolin derivatives such as lanolin, lanolin acetate, isopropyl lanolin fatty acid, and lanolin alcohol; and one or two of these. It can be used in combination of more than one kind.

The content of the component (d) in the solid powder cosmetic of the present invention is preferably 1 to 30%. When the content of component (d) is in the range of 1 to 5%, component (b)
Powder acts as a binder between the powders, and provides a solid powder cosmetic which is non-sticky, has a dry feeling, has better elongation and spread, and has excellent drop strength. When the content of the component (d) is in the range of 15 to 30%, the adhesion to the skin becomes better, and the powder of the component (b) acts as an anti-caking agent, without causing caking. Thus, a solid powder cosmetic having excellent adhesion can be obtained.

The powdery wax of the component (e) used in the present invention is obtained by pulverizing a wax having a melting point of 80 ° C. or more by pulverization or the like. It is a component that acts as a binder between powders and improves the drop strength. The average particle diameter of the component (e) is 0.5 to 0.5 from the viewpoint of a powder binder.
30 μm is preferable, and 1 to 10 μm is particularly preferable. Such a component (e) is obtained by mechanically pulverizing a wax such as a synthetic hydrocarbon wax, polyethylene wax, ethylene propylene copolymer wax, Fischer-Tropsch wax or the like with a jet mizer, dissolving the wax in a volatile solvent and spraying. It is obtained by powdering by a drying method or the like. As such a component (e), commercially available products such as PRESS-AID-SP (average particle diameter 7.5 μm) and PRESS-AID-XP (average particle diameter 3 μm) (all manufactured by PRESPERSE) are used. Can be.

[0015] The content of the component (e) in the solid powder cosmetic of the present invention is preferably 0.1 to 10%, more preferably 0.5 to 10%.
~ 5% is particularly preferred. When used in this range, it is possible to obtain a solid powder cosmetic which has good elongation and spread and is excellent in drop strength.

The solid powder cosmetic of the present invention contains the above-mentioned components (a) to
Powders other than (c) can be contained. Such powders are not particularly limited by irregular shapes, needle-like shapes, fume-like, fine particles, particle sizes such as pigment grade, porous, non-porous particle structures and the like, inorganic powders, Organic powders, pigment powders,
Composite powders and the like can be mentioned. Specifically, as a coloring agent, titanium oxide, black titanium oxide, konjo, ultramarine, red iron oxide, yellow iron oxide, black iron oxide, zinc oxide, aluminum oxide, magnesium oxide, zirconium oxide, magnesium carbonate, calcium carbonate, chromium oxide , Chromium hydroxide, carbon black, tar dyes, etc., as touch modifiers, silicon oxide, aluminum silicate, magnesium silicate, aluminum magnesium silicate, talc, silicon carbide, wool powder, silk powder, crystalline cellulose, N-acyl lysine, etc. Examples of the ultraviolet blocking agent include composite powders of fine particle titanium oxide, fine particle zinc oxide, fine particle titanium oxide-coated mica, fine particle zinc oxide-coated mica, barium sulfate-coated mica titanium, and the like, and one or more of these may be used. it can. These powders may be surface-treated by a generally known method such as silicones, fluorine compounds, metal soaps, oils and the like in order to improve dispersibility and adhesion. These powders in the solid powder cosmetic of the present invention can be blended at 1 to 40%.

The solid powder cosmetic of the present invention contains, in addition to the above-mentioned components, a polyhydric alcohol, a lower alcohol, a water-soluble polymer, an interface, in a quantitative and qualitative range according to the purpose, without impairing the effects of the present invention. Activators, gelling agents, humectants, ultraviolet absorbers, antioxidants, preservatives, chelating agents, perfumes, cosmetic ingredients, and other components commonly used in cosmetics can be blended.

The solid powder cosmetic of the present invention comprises a foundation, white powder, blush, lipstick, eyeshadow, eyebrow,
Concealers, sunscreen cosmetics and the like can be mentioned, but cosmetics in which the effects of the present invention are particularly easily exerted are makeup cosmetics.

[0019]

The present invention will be described in more detail with reference to the following examples. These do not limit the present invention at all.

Examples 1 to 10 and Comparative Examples 1 to 4: Solid powdered eye shadows Solid powdered eye shadows shown in Table 1 were prepared by the following production method, and were evaluated for "good spreadability" and "finished gloss". The "feel", "the absence of caking" and "falling strength" were evaluated by the following evaluation methods and criteria, and the results are shown in Table 1.

[0021]

[Table 1]

(Production method) A: Components 1 to 9 are mixed and dispersed by a Henschel mixer. B: Components 10 to 11 are mixed. C: B is added to A and uniformly dispersed. D: C was pulverized and press-molded on a metal plate to obtain a solid powder eye shadow.

(Evaluation method: "Good spread and spread", "Gloss of finish") Twenty panelists specializing in cosmetics used the solid powdered eye shadows of the above Examples and Comparative Examples. , And "Gloss of finish" were evaluated on a 5-point scale according to the following criteria, and the average score of all panels was determined according to the following criteria. Evaluation criteria: Usability: Rating Very good: 5 points Good: 4 points Normal: 3 points Slightly poor: 2 points Poor: 1 point Judgment criteria: Average score: 4.5 or more: ◎ 3.5 or more Less than 4.5: ○ 1.5 or more to less than 3.5: △ Less than 1.5: ×

(Evaluation method: “No caking”) The solid powder eye shadows of the above Examples and Comparative Examples were rubbed 80 times on the cake surface using an eye shadow chip, and the following conditions were observed. Five-step evaluation according to the standard,
The average of n = 3 scores was determined according to the following criteria. Evaluation criteria: Cake surface condition: Rating No change: 5 points Slightly hardened, but there is no problem in usability: 4 points Partially solidified surface: 3 points Surface solidified entirely, but loosened with chips: 2 points The surface is hardened as a whole and cannot be loosened with a chip: 1 point Judgment criteria: Average score of evaluation: Judgment 4.5 or more: 3.5 or more to less than 4.5: ○ 1.5 or more to less than 3.5: △ Less than 1.5: ×

(Evaluation method: “fall strength”) Five solid powder eye shadows of the above Examples and Comparative Examples were prepared and dropped freely from a height of 50 cm on an acrylic plate.
The surface condition after the drop was observed and evaluated on a 5-point scale according to the following criteria. Further, the average of n = 5 points was determined according to the following criteria. Evaluation criteria: Cake surface condition: Rating No change: 5 points There is a slight crack, but there is no problem in usability: 4 points There is a long crack, but there is no problem in usability: 3 points There is a crack, and there is a crack in the cake and plate. There is a gap between: 2 points The cake cracks: 1 point Judgment criteria: Average rating score: Judgment 4.5 or more: 3.5 or more to less than 4.5: ○ 1.5 or more to less than 3.5: △ Less than 1.5: ×

As can be seen from Table 1, the solid powder eye shadows of Examples 1 to 10 according to the present invention are characterized by "good spreadability", "finished gloss", "no caking", It was a solid powder cosmetic excellent in all items of "fall strength". On the other hand, in Comparative Example 1 in which the content of the component (a) is 40%, in Comparative Example 2 and the component (b) which do not contain the component (b), in terms of good stretchability and glossiness of the finished product, In Comparative Example 3 in which the amount of the oil agent was increased without adding the component (c), in Comparative Example 3 in which no component (c) was contained in the absence of caking and in the drop strength, the spreadability was better than in Examples. It was inferior.

Example 11: Solid powdered powder foundation (component) (% by mass) 1. Mica (aspect ratio 20, average particle diameter 15 μm) 50 2. Talc remaining Titanium mica (aspect ratio 30, average particle diameter 20 μm) 10 4. Spherical polystyrene (average particle diameter 3 μm) 2 5. Titanium oxide 5 6. Bengara 1 7. Iron oxide yellow 1 8. Black iron oxide 0.39. Methyl paraoxybenzoate 0.110. Polytetrafluoroethylene powder (amorphous, average particle size 5 μm) 5 11. Powdered wax (Note 1) 1 12 Vaseline 0.5 13.2-Cetyl ethylhexanoate 5 14. Squalane 5 15. Dimethyl polysiloxane (Note 2) 5

(Production method) A: Components 1 to 11 are mixed and dispersed by a Henschel mixer. B: Components 12 to 15 are heated and mixed. C: B is added to A and uniformly dispersed. D: C was pulverized and press-molded on a metal plate to obtain a solid powdery powder foundation. The solid powdered powder foundation of Example 11 was
The solid powder cosmetic was excellent in all of "good spreadability", "finished gloss", "no caking", and "fall strength".

Example 12: Solid powdery blusher (component) (% by mass) 1. Mica (aspect ratio 20, average particle diameter 10 μm) 40 2. Talc remaining Titanium mica (aspect ratio 30, average particle diameter 20 μm) 20 4. 4. Spherical silica (average particle diameter 5 μm) 5 Titanium oxide 1 6. Bengara 1 7. Yellow iron oxide 0.58. Black iron oxide 0.19. Methyl paraoxybenzoate 0.110. Polytetrafluoroethylene powder (amorphous, average particle size 5 μm) 15 11. Powdered wax (Note 1) 2 12 Dimethyl polysiloxane (Note 2) 5

(Production method) A: Components 1 to 11 are mixed and dispersed by a Henschel mixer. B: Add component 12 to A and disperse uniformly. C: B was crushed and press-molded on a metal plate to obtain a solid powdery blusher. The solid powdered blusher of Example 11 has "good spreadability", "finished gloss", "no caking",
The solid powder cosmetic was excellent in all items of “fall strength”.

[0031]

As described in detail above, the solid powder cosmetics of the present invention have good spreadability and excellent finish gloss,
It was a solid powder cosmetic which did not cause a caking phenomenon and was excellent in drop strength.

Claims (5)

[Claims] (1) The following components (a) to (c): (a) 50% by mass or more of plate-like powder; (b) polytetrafluoroethylene powder; (c) spherical powder. Solid powder cosmetics. 2. The solid powder cosmetic according to claim 1, further comprising an oil agent as the component (d). 3. The solid powder cosmetic according to claim 2, wherein the content of the component (d) is 1 to 5% by mass. 4. The content of the component (d) is 15 to 30% by mass.
3. The solid powder cosmetic according to claim 2, wherein: 5. The solid powder cosmetic according to claim 1, further comprising a powdered wax as the component (e).