JP2005330210A - Powder solid cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a powder solid cosmetic, such as foundation, eye shadow, or lip stick, which gives an excellent sense of use, such as adhesiveness to skins and spreadability, is hardly caked, when coated, and has good moldability. <P>SOLUTION: This powder solid cosmetic is characterized by containing petal-like powder and plate-like powder having an average particle diameter of 1.0 to 30.0 μm as a part of the powder. A remarkable effect is exhibited, when the petal-like powder is calcium silicate. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a powder solid cosmetic having excellent usability and usability and good moldability. More specifically, the present invention relates to a powder solid cosmetic material that has an excellent feeling of use such as adhesion to the skin, is difficult to cake during application, and has good moldability.

  In general, a powder solid cosmetic is composed of a powder as a main component and an oil that acts as a binder or an adhesive thereof, and is manufactured by press molding. Since the powder part is the main base material for cosmetics, it has a great effect on the feeling of use of the cosmetics. Among them, the plate-like powder has excellent adhesion to the skin due to its shape and good spreadability. It is an important powder because it can impart more advanced feel characteristics, optical characteristics, and functional characteristics by performing various treatments on the surface (see, for example, Patent Documents 1 and 2).

  However, because of the shape of the plate-like powder, when molding a powder solid cosmetic blended with the plate-like powder, it becomes a layer structure between the plate-like powders, and it is difficult to have sufficient molding strength, Among the plate-like powders, the moldability of a powder solid cosmetic containing a powder having a large aspect ratio (average particle diameter / average thickness) is particularly bad, and it is extremely difficult to provide molding strength. Therefore, in order to improve these drawbacks, it is common to blend oil or limit the blending amount, size and properties of the plate-like powder. However, since the oil has molding strength due to its viscosity and liquid cross-linking, when applying cosmetics, the surface becomes hard when rubbing the surface with an applicator such as a puff (generally called caking), This reduces the problem and feeling of use that cosmetics cannot be applied to the applicator. Further, if the properties such as the blending amount and aspect ratio of the plate-like powder are restricted, it becomes difficult to fully express the feeling of use inherent in the plate-like powder. Therefore, the development of a molding aid that can improve the moldability without impairing the usability and the feeling of use is an issue.

JP 7-118123 A JP 2003-171575 A

  The present invention has been made in view of the above circumstances, and provides a powder solid cosmetic that provides excellent usability such as adhesion to the skin and spreadability, is difficult to cake during application, and has good moldability. The purpose is to do.

  As a result of diligent research to solve the above-mentioned problems, the present inventor has excellent usability, usability and moldability by combining a plate-like powder with a petal-like powder having a specific particle diameter. The present inventors have found that a good powder solid cosmetic can be obtained, and have completed the present invention.

  That is, this invention is a powder solid cosmetic characterized by containing a petal-like powder having an average particle size of 1.0 to 30.0 μm and a plate-like powder.

  The petal-like powder is preferably calcium silicate.

  The plate-like powder can be a plate-like powder having an aspect ratio of 30 to 500, and the plate-like powder is mixed with the plate-like powder that has a particularly bad influence on the moldability of the powder solid cosmetic. Even in this case, a remarkable improvement in moldability can be obtained by blending the petal-like powder, and a powder solid cosmetic with excellent moldability and excellent usability can be obtained.

  According to the present invention, by blending petal-like powder and plate-like powder with a specific particle size in combination, an excellent feeling of use such as adhesion to the skin and spreadability can be obtained, and it is difficult to cake during application. In addition, a powder solid cosmetic material having good moldability can be obtained. In particular, by using petal-like calcium silicate as the petal-like powder, a powder solid cosmetic having a better feeling of use, usability, and moldability can be obtained.

  Hereinafter, the best mode for carrying out the present invention will be described in detail.

  In the present invention, petal-like powder is used. The petal shape is a state in which flakes grow in multiple directions instead of a fixed direction to form an aggregate. The average particle size of the petal-like powder is 1.0 to 30.0 μm. By using a product having an average particle size within this range, excellent effects can be obtained in terms of the feeling of use and usability of the powdered solid cosmetic and the improvement of moldability. When the average particle size is less than 1.0 μm, the effect of improving the molding strength of the powder solid cosmetic is not exhibited. On the other hand, if it exceeds 30.0 μm, the smoothness when the powdered solid cosmetic is applied is lowered, and the removal and sticking of the cosmetic are reduced. A more preferable average particle diameter is 2.0 to 20.0 μm. In addition, in order for the petal-like powder to have an average particle diameter of 1.0 to 30.0 μm as an aggregate, the longitudinal direction is 0.1 to 30 μm and the thickness is 0.001 to 0.1 μm. Some are preferred. When the average particle size is 2.0 to 20.0 μm, it is preferable that the longitudinal direction is 0.1 to 20 μm and the thickness is 0.001 to 0.1 μm.

  The petal-like powder is a known substance, for example, a method described in JP-A No. 54-93698, JP-A No. 9-25108, JP-A No. 2003-30632, JP-A No. 2003-261796, etc. Can be obtained. Examples of the powder that forms the petal-like powder include, for example, calcium silicate, calcium phosphate, magnesium carbonate, and the like. In the present invention, calcium silicate is preferably used, and the effects of the present invention are remarkably exhibited.

  In addition, when pulverizing the petal-like powder, a pulverizer is generally used, and the petal-like powder is used as long as the petal shape is not impaired. As the pulverizer, for example, a compression pulverizer, a shear pulverizer, an impact pulverizer, a ball medium pulverizer, an airflow pulverizer, or the like can be used. The classification includes a natural sedimentation method and a cyclone method, but is not particularly limited.

  As the petal-like powder in the present invention, a commercially available product can be used. In use, the commercially available product is used as it is or after being pulverized and classified. Examples of commercially available products include Florite R (petal calcium silicate, average particle size 25 μm) (manufactured by Tokuyama Corporation), Polonex C (petal calcium carbonate / calcium phosphate complex, average particle size 10 μm) (Maruo Calcium Co., Ltd.) Company-made).

  The content of the petal-like powder is preferably 1.0 to 80% by mass in the total amount of the powder solid cosmetic. Within this range, remarkable effects can be obtained in terms of improvement in moldability, usability and usability of the powder solid cosmetic. A more preferable content is 3.0 to 60% by mass.

  As the plate-like powder used in the present invention, a plate-like powder usually used in cosmetics is used. Examples of powders that form plate powders include talc, sericite, mica, kaolin, silicic anhydride, barium sulfate, zinc oxide, titanium oxide, synthetic mica and other inorganic powders, silk, nylon, poly Examples thereof include polymer powders such as alkyl acrylate, polyurethane, and silicon. In addition, composite plate-like powders of plate-like powders and composite plate-like powders other than plate-like powder and plate-like powder can be used. Further, as the plate-like powder, a powder whose surface is modified with metal soap, silicone, lecithin or the like can be used. One or more plate-shaped powders are arbitrarily selected and used.

  The average particle size of the plate-like powder is preferably 5 to 150 μm. A more preferable average particle diameter is 8 to 100 μm, and most preferably 10 to 75 μm. The aspect ratio (average particle diameter / average thickness) of the plate-like powder is preferably 5 or more. More preferably, it is 10 or more. The upper limit of the aspect ratio is not particularly limited, but is about 500 in terms of manufacturing. When the plate-like powder is within these ranges, a powder solid cosmetic excellent in feeling and usability can be obtained.

  In the present invention, even in the case where a plate-like powder having a relatively large aspect ratio that has a particularly bad influence on the moldability of the powder solid cosmetic material and having an aspect ratio of 30 or more is blended in the plate-like powder, the petal-like powder A remarkable improvement in moldability can be obtained by blending, and a powder solid cosmetic having excellent usability and usability and good moldability can be obtained.

  Therefore, in the present invention, a powder solid cosmetic containing a plate-like powder having an aspect ratio in the range of 30 to 500 is a particularly preferred embodiment.

  Commercially available products can be used as the plate-like powder in the present invention. Examples of commercially available products include Metashine MC1080RY (average particle diameter 80 μm, aspect ratio 80) (manufactured by Nippon Sheet Glass Co., Ltd.), Timilon Star. Raster MP-115 (average particle size 40 μm, aspect ratio 300) (Merck Co., Ltd.), SA-310 (average particle size 24 μm, aspect ratio 200) (Yamaguchi Mica Co., Ltd.), plate-like barium sulfate HM (average particles) Diameter 12 μm, aspect ratio 30) (manufactured by Sakai Chemical Co., Ltd.), Talc JA-46R (average particle diameter 9.5 μm, aspect ratio 50) (manufactured by Asada Flour Milling Co., Ltd.), Corona Nasnas Sparkle (average particle diameter 47 μm, aspect ratio) 350) (manufactured by Engelhard Co., Ltd.), LI-talc JA-46R (average particle size 9.5 μm, asphalt Transfected ratio 50) (Miyoshi Kasei Co., Ltd.).

  The content of the plate-like powder is preferably 2.0 to 95% by mass in the total amount of the powder solid cosmetic. Within this range, remarkable effects can be obtained in terms of usability, usability, and improvement in moldability of the powdered solid cosmetic. A more preferable content is 5.0 to 80% by mass.

  In addition to the petal-like powder and plate-like powder, the powder solid cosmetic of the present invention is appropriately blended with other powders for the purpose of imparting color tone, ultraviolet shielding effect, makeup effect, feel adjustment, etc. can do. The other powder used in the present invention is not particularly limited as long as it is a powder usually used in cosmetics. Examples of other powders include talc, sericite, mica, kaolin, silicic acid anhydride, barium sulfate, zinc oxide, titanium oxide, iron oxide and other inorganic pigments, silk, nylon, polyalkyl acrylate, polyurethane, silicone And polymer powders, organic pigments, and composite pigments thereof. These other powders can also be used as powders surface-modified with metal soap, silicone, lecithin or the like.

  The total powder content of the petal-like powder, plate-like powder and other powders in the present invention varies depending on the intended form of the powder solid cosmetic, but in the total amount of the powder solid cosmetic. 40-100 mass% is preferable, More preferably, it is 60-95 mass%.

  In addition to the above components, the powder solid cosmetic of the present invention includes other components used in ordinary powder solid cosmetics, such as oils such as liquid oils, semisolid oils, solid oils, dyes, and polymer compounds. , Fragrances, surfactants, antioxidants, preservatives, chemicals, and the like can be appropriately blended within a range not impairing the effects of the present invention.

  Examples of the liquid oil include hydrocarbons, esters, oils and fats, higher fatty acids, higher alcohols, and silicone oil. Specifically, as hydrocarbons, liquid paraffin, squalane, esters, isopropyl myristate, octyldodecyl myristate, di-2-ethylhexyl sebacate, dipentyl glycol di-2-ethylhexanoate, neopentyl glycol dicaprate , Glyceryl tri-2-ethylhexanoate, diglyceryl triisostearate, pentaerythritol tetra-2-ethylhexanoate, diethyl erythritol 2-ethylhexanoic acid, trimethylolpropane tri-2-ethylhexanoate, diisostearyl malate Oils, olive oil, castor oil, higher fatty acids, isostearic acid, oleic acid, higher alcohols, isostearyl alcohol, oleyl alcohol, silicone oil, dimethylpoly Rokisan, methylphenyl polysiloxane, decamethylcyclopentasiloxane, and the like.

  Examples of the semi-solid oil include petrolatum, cholesteryl hydroxy stearate, stearic acid hydrogenated castor oil, dipentaerythritol fatty acid (12-hydroxy stearic acid, stearic acid, rosin acid, etc.) ester, and the like.

  Examples of the solid oil include oils and fats such as hardened oil and owl, hydrocarbons such as ceresin, microcrystalline wax, paraffin wax and polyethylene wax, waxes such as beeswax, ibota wax, candelilla wax and carnauba wax, stearic acid, Examples include higher fatty acids such as citrate, higher alcohols such as cetanol, and the like.

  Examples of the powder solid cosmetic of the present invention include foundation, eye shadow, blusher, eyebrow, eyeliner, lipstick, white powder, body powder and the like.

  In the preparation of the powder solid cosmetic of the present invention, as in the case of petal-like powder pulverization, the pulverization used for mixing, dispersing, and pulverizing ordinary powder solid cosmetics within a range that does not impair the petal shape and plate shape. Machines and molding machines can be used as needed. Examples of the pulverizer include a compression crusher, a shear crusher, an impact crusher, a ball medium pulverizer, an airflow pulverizer, etc., and a molding machine such as a hydraulic press machine, a pneumatic press machine, a servo press machine, Examples thereof include a wet molding machine in which a bulk is dispersed in a solvent such as alcohol and filled. In particular, when a pressure molding machine is used, the moldability is remarkably improved.

  Hereinafter, the present invention will be described in detail with reference to examples, but the present invention is not limited thereto. The blending amount is mass%, and the particle size is the average particle size.

  Hereinafter, production examples of petal-like powder will be described.

[Production Example 1: Petal-like magnesium carbonate]
Carbon dioxide gas is introduced into 2.0 L of magnesium hydroxide suspension (30 g / L) adjusted to 60 ° C. at a rate of 1.5 L / min for 240 minutes while maintaining the temperature at 60 ° C. to produce basic magnesium carbonate. It was. The obtained product was washed with ion-exchanged water and ethanol and dried to prepare petal-like magnesium carbonate. When SEM observation of the petal-like magnesium carbonate was performed, it was an aggregate in which flakes having a thickness of 0.01 to 0.05 μm and a longitudinal direction of 0.5 to 2 μm grew in multiple directions, and the average particle diameter was 14 μm. It was confirmed that there was.

[Production Example 2: Petal-like calcium silicate]
At room temperature, 100 ml of a 0.3 mol / l sodium silicate (SiO ₂ /NaO=2.6) aqueous solution and 100 ml of a 0.3 mol / l calcium chloride aqueous solution were mixed, and the resulting suspension was heated at 180 ° C. in an autoclave. The mixture was reacted for 10 hours at a temperature of 1 to produce petal-like calcium silicate. The obtained product was washed with ion-exchanged water and ethanol and dried, followed by SEM observation. As a result, it was confirmed that the product was an aggregate in which flakes having a thickness of 0.01 to 0.1 μm and a longitudinal direction of 1 to 4 μm were grown in multiple directions, and the average particle diameter was 40 μm.

  The effect test method used in the present invention will be described below.

(Feeling of use)
The feeling of use of the powdered solid cosmetic was evaluated by an average of four grades (1 to 4) by 10 specialist panels regarding the stickiness, spread, removal and smoothness of the cosmetic when applied. . The evaluation criteria are shown below.

(4-level evaluation)
4: Excellent.
3: Slightly better.
2: Slightly bad.
1: Bad.

(Usage evaluation criteria)
: From 3.5 to 4.0 ○: From 2.5 to less than 3.5 Δ: From 1.5 to less than 2.5 ×: From 1.0 to less than 1.5

(Caking)
The caking of the powdered solid cosmetic was performed using a predetermined puff at the time of applying the cosmetic, and four-stage evaluation of 1 to 4 by 10 professional panels was performed, and the average evaluation was used. The evaluation criteria are shown below.

(4-level evaluation)
4: Does not cause caking.
3: Slightly occurs (can be used with a puff, can be used).
2: Occurs (can be removed with a puff, limit of use).
1: Occurs (cannot be removed by puffing, cannot be used).

(Caking evaluation criteria)
: From 3.5 to 4.0 ○: From 2.5 to less than 3.5 Δ: From 1.5 to less than 2.5 ×: From 1.0 to less than 1.5

(Moldability)
The moldability of powdered solid cosmetics is that after the cosmetics are prepared, they are attached to a predetermined compact container and dropped directly onto a 50 cm high, 2 cm thick plywood, causing any of cracks, chips, cracks, etc. Comparison was made based on the average number of drops until n (n = 3).

(Formability evaluation criteria)
◎: 9.0 times or more ○: 6.0 times or more and less than 9.0 times Δ: 3.0 times or more and less than 6.0 times ×: 1.0 times or more and less than 3.0 times

[Examples 1 to 9, Comparative Examples 1 to 4]
Powder solid cosmetics (foundations) with the components and blending amounts shown in Tables 1 and 2 (total blending amount of 100% by mass) were prepared by the following method. Further, “use feeling”, “usability”, and “moldability” were evaluated, and the results were also described.

(Preparation method)
Each powder raw material is mixed and uniformly dispersed, mixed and pulverized with Henschel mixer and atomizer together with other ingredients, and the resulting bulk is press-molded into an aluminum metal pan with an inner diameter of 58 mm and a height of 4 mm to obtain a foundation. It was.

In Tables 1 and 2,
Note 1: Fluorite R (average particle size 25 μm) (manufactured by Tokuyama Corporation)
Note 2: A pulverized product of Fluorite R (manufactured by Tokuyama Co., Ltd.) (using an airflow pulverizer, average particle size 9 μm)
Note 3: Ground product of FLORITE R (manufactured by Tokuyama Co., Ltd.) (using airflow crusher, average particle size 4 μm)
Note 4: Polonex C (average particle size 10 μm) (Maruo Calcium Co., Ltd.)
Note 5: Petal-like magnesium carbonate of Production Example 1 (average particle size 14 μm)
Note 6: SA-310 (average particle size 24 μm, aspect ratio 200) (manufactured by Yamaguchi Mica Co., Ltd.)
Note 7: Timilon Star Raster MP-115 (average particle size 40 μm, aspect ratio 300) (manufactured by Merck & Co., Inc.)
Note 8: Plate-like barium sulfate HM (average particle size 12 μm, aspect ratio 30) (manufactured by Sakai Chemical Co., Ltd.)
Note 9: Metashine MC1080RY (average particle size 80 μm, aspect ratio 80) (manufactured by Nippon Sheet Glass Co., Ltd.)
Note 10: Talc SG-1000 (average particle size 2 μm, aspect ratio 4) (made by Nippon Talc Co., Ltd.)
Note 11: Ground product of Fluorite R (using airflow pulverizer, average particle size 0.4 μm) (manufactured by Nippon Chemical Co., Ltd.)
Note 12: Petal-like calcium silicate of Production Example 2 (average particle size 40 μm)
Note 13: Micro calcium beads (calcium silicate, average particle size 9 μm) (manufactured by Nippon Chemical Co., Ltd.)

  As is apparent from Table 1, the powdered solid cosmetic containing the petal-like powder and the plate-like powder having a specific particle diameter according to the present invention is excellent in feeling of use, has no caking, and has good moldability. ing. In particular, when calcium silicate is used as the petal-like powder, it can be seen that the moldability is remarkably improved.

  Examples will be described below. The powdered solid cosmetics of these examples all gave good results with respect to feeling in use, usability, and moldability.

Example 10
An eye shadow was prepared as follows. Ingredients, blending amounts and production methods are as follows.
(Component) Blending amount (% by mass)
Petal-like calcium silicate (Note 1) 12.5
Plate powder (talc) (Note 2) 15.0
Plate-like powder (mica) (Note 3) 32.0
Plate powder (Bengara coated mica) (Note 4) 15.0
Spherical polymethyl methacrylate 5.0
Methylpolysiloxane 5.0
Vaseline 5.0
Colorant 10.0
(Organic tar pigment, Bengala, titanium oxide)
Antioxidant 0.5

Note 1: Ground product of FLORITE R (manufactured by Tokuyama Co., Ltd.)
Note 2: Talc JA-46R (average particle size 9.5 μm, aspect ratio 50) (manufactured by Asada Flour Milling Co., Ltd.)
Note 3: SA-310 (average particle size 24 μm, aspect ratio 200) (manufactured by Yamaguchi Mica Co., Ltd.)
Note 4: Coloronasena Sparkle (average particle size 47 μm, aspect ratio 350) (manufactured by Engelhard Inc.)

(Manufacturing method)
The powder raw material is mixed and dispersed together with other components using a Henschel mixer and atomizer, uniformly mixed, and pulverized. The resulting bulk is molded into a resin dish having an outer diameter of 32 mm and a height of 4 mm by a wet molding method. Got a shadow.

Example 11
An eyebrow was prepared as follows. Ingredients, blending amounts and production methods are as follows.
(Component) Blending amount (% by mass)
Petal-like calcium silicate (Note 1) 60.0
Plate powder (egg yolk lecithin-treated talc) (Note 2) 17.0
Zinc stearate 5.0
Spherical silica 5.0
Colorant 12.5
(Yellow iron oxide, bengara, black iron oxide, titanium oxide)
Antioxidant 0.5

Note 1: Ground product of FLORITE R (manufactured by Tokuyama Co., Ltd.)
Note 2: LI-talc JA-46R (average particle size 9.5 μm, aspect ratio 50) (manufactured by Miyoshi Chemical Co., Ltd.)

(Manufacturing method)
The powder raw material is mixed and dispersed together with other components using a Henschel mixer and atomizer, mixed, and pulverized, and the resulting bulk is molded at a predetermined press pressure so that it has a length of 50 mm, width, and height of 5 mm. A rod-shaped eyebrow was obtained.

Example 12
Lipstick was prepared as follows. Ingredients, blending amounts and production methods are as follows.
(Component) Blending amount (% by mass)
Petal-like calcium silicate (Note 1) 30.0
Plate powder (talc) (Note 2) 9.5
Plate-shaped powder (mica) (Note 3) 17.5
Spherical polymethyl methacrylate 5.0
Squalane 15.0
Polyglyceryl triisostearate 10.0
Jojoba oil 5.0
Colorant 7.5
(Organic tar pigment, Bengala, titanium oxide)
Antioxidant 0.5

Note 1: Ground product of FLORITE R (manufactured by Tokuyama Co., Ltd.)
Note 2: Talc JA-46R (average particle size 9.5 μm, aspect ratio 50) (manufactured by Asada Flour Milling Co., Ltd.)
Note 3: SA-310 (average particle size 24 μm, aspect ratio 200) (manufactured by Yamaguchi Mica Co., Ltd.)

(Manufacturing method)
The powder raw material is mixed and dispersed together with other components using a Henschel mixer and atomizer, mixed, and pulverized. The resulting bulk is placed on an aluminum metal pan with an outer diameter of 25 mm and a height of 4 mm at a predetermined press pressure. Molded to obtain a lipstick.

Example 13
White powder was prepared as follows. Ingredients, blending amounts and production methods are as follows.
(Component) Blending amount (% by mass)
Petal-like calcium silicate (Note 1) 40.0
Plate-shaped powder (talc) (Note 2) 34.0
Plate-shaped powder (mica) (Note 3) 15.0
Spherical hexamethylene diisocyanate / trimethylol hexyl lactone crosslinked polymer / silicic anhydride 3.0
Methylphenylpolysiloxane 5.0
Colorant 2.5
(Yellow iron oxide, bengara, black iron oxide, titanium oxide)
Antioxidant 0.5

Note 1: Ground product of FLORITE R (manufactured by Tokuyama Co., Ltd.)
Note 2: Talc JA-46R (average particle size 9.5 μm, aspect ratio 50) (manufactured by Asada Flour Milling Co., Ltd.)
Note 3: SA-310 (average particle size 24 μm, aspect ratio 200) (manufactured by Yamaguchi Mica Co., Ltd.)

(Manufacturing method)
The powder raw material is mixed and dispersed together with other components using a Henschel mixer and atomizer, uniformly mixed, and pulverized. The resulting bulk is placed on an aluminum metal pan with an outer diameter of 58 mm and a height of 4 mm at a predetermined press pressure. Molded to obtain white powder.

Claims (3)

  A powder solid cosmetic comprising petal-like powder having an average particle size of 1.0 to 30.0 μm and plate-like powder.   The powder solid cosmetic according to claim 1, wherein the petal-like powder is calcium silicate.   The powder solid cosmetic according to claim 1 or 2, wherein the plate-like powder has an aspect ratio of 30 to 500.