JP5543053B2 - Powder cosmetics - Google Patents

Description

  The present invention relates to a powder cosmetic. More specifically, the present invention relates to a powdery cosmetic containing water.

  Powder cosmetics are generally used as finishing cosmetics, and are widely used for the purpose of producing a transparent skin quality, suppressing sweat and sebum, and improving makeup retention. Since the powder cosmetic is in the form of a powder, it has a soft and soft usability when taken. However, since the main component is powder, the finish is powdery, and there is a drawback that a refreshing feeling cannot be obtained. These drawbacks are remarkable in use in seasons where the temperature is high and humidity is high such as in summer.

On the other hand, various powder cosmetics containing water that imparts a refreshing feeling to the powder have been developed. For example, powdered cosmetics containing a porous and / or water-absorbing powder and lower alcohol such as corn starch, potato starch, and silicic acid (see Patent Document 1), and water such as powder treated with silicone treatment It consists of a non-water-adsorbing powder having a contact angle exceeding 100 ° and a non-water-adsorbing powder having a contact angle with water of 100 ° or less, and the contact angle with water as a whole is 100 ° or more Powdery cosmetics containing non-water-adsorbing powder and water (see Patent Document 2), hydrophobized silicic acid surface having a surface area of 60 m ² / g or more obtained by hydrophobizing the surface of fine silicic anhydride A powdery cosmetic (see Patent Document 3) having a powdery form in which a hydrophobic powder is oriented and uniformly coated on the surface of a waterdrop-like aqueous component obtained by inclusion is disclosed. Furthermore, although it is not a powder cosmetic technique but a solid cosmetic technique, a technical disclosure that a porous powder such as porous silica plays a role of absorbing water or an aqueous solution of an aqueous component (see Patent Document 4). is there.

JP-A-9-48721 JP 2001-226230 A JP 2003-267826 A JP 2002-205910 A

However, the conventional powder cosmetics have some drawbacks, such as insufficient refreshing feeling, unsatisfactory usability and usability of cosmetics, and unstable powder state. . For example, for powder cosmetics containing hydrophobized silica as described in Patent Document 3 and the like, hydrophobized silica is very fine with a surface area of, for example, 60 m ² / g or more. The feeling of use, which is an important characteristic of the material, is significantly reduced. In order to improve this feeling of use, it is common to blend other relatively large particle size powders or spherical powders, etc., but these powders are applied to the liquid surface of the hydrophobic silica. Inhibits oriented adsorption and reduces system stability. Moreover, there exists a fault that adsorption | suction will collapse easily by applying external force etc. when filling a container. Therefore, the present situation is that it is desired to develop a powder cosmetic that stably contains water and imparts a sufficient refreshing feeling without impairing usability and usability.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a powder cosmetic that is excellent in cool feeling, good in use feeling, and stable while maintaining the usability as a powder cosmetic. .

  As a result of diligent research to solve the above problems, the present inventors have found that the above problems can be solved by preparing a powder cosmetic by blending water with petal-like powder having a specific particle diameter. The present invention has been completed.

That is, the first invention is a powder cosmetic containing petal-like powder having an average particle size of 1.0 to 30.0 μm and water of 5 to 65% by mass (excluding 40% by mass or more) in the total amount of the powder cosmetic. It is a powder, The said powder cosmetics whose mass ratio (water / petal-like powder (mass ratio)) of the said water and petal-like powder is 0.4-5.5.

  The second invention is the powder cosmetic according to the first invention, wherein the petal-like powder is calcium silicate.

  In the present invention, the powder cosmetic is a cosmetic whose appearance is in the form of a powder. Moreover, the display of the average particle diameter in this invention is measured by SEM.

According to the present invention, a powder cosmetic containing an average particle size of 1.0 to 30.0 μm of petal-like powder and 5 to 65 mass% (excluding 40 mass% or more) of water in the total amount of the powder cosmetic. The powder cosmetic was prepared by adjusting the mass ratio of water and petal-like powder (water / petal-like powder (mass ratio)) to 0.4 to 5.5. While maintaining the usability, it is possible to obtain a powder cosmetic excellent in refreshing feeling, good in feeling of use and stability.

  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-like powder is a porous powder having a petal-like crystal structure in which petal-like flake powder is grown in multiple directions to form an aggregate.

  The powder in the petal-like powder is not particularly limited as long as it is a powder that can form a petal-like aggregate, but calcium silicate, calcium phosphate, magnesium silicate, magnesium phosphate, magnesium carbonate, etc. are preferable, especially Calcium silicate is preferable, and the effects of the present invention such as containing water stably are remarkably exhibited.

The petal-like calcium silicate powder preferably used in the present invention has a general formula of 2CaO.3SiO ₂ .nSiO ₂ .mH ₂ O (where m and n are positive numbers and n is 0.1 to 10). It belongs to the gyrolite-type calcium silicate shown by.

  The petal-like powder is a known substance, and known methods such as JP-A-54-93698, JP-A-9-25108, JP-A-2003-30632, JP-A-2003-261796, etc. Can be produced by the method described in 1. above. For example, in the case of petal-like calcium silicate, a sodium silicate aqueous solution and a calcium chloride aqueous solution are mixed at room temperature, and the resulting suspension is heated in an autoclave and reacted at a temperature of, for example, 180 ° C. To produce petal-like calcium silicate. The resulting product is produced by washing and drying with ion-exchanged water and ethanol.

  The petal-like powder in the present invention has a high water absorption capacity due to a special petal-like structure. The water absorption capacity is preferably one having a water absorption of 1.5 ml / g or more from the viewpoint of sufficiently exerting the effects of the present invention. Thereby, even in the presence of water, the powder form can be sufficiently maintained, and the powder cosmetic can be stably made into a powder form. More preferably, it is 2.0 ml / g or more. Moreover, although the upper limit of the water absorption is not particularly limited, 6.0 ml / g is sufficient from the viewpoint of maintaining the powder form and sufficiently exhibiting a refreshing feeling. In the present invention, it is particularly preferably 1.5 to 6.0 ml / g. More preferably, it is 2.0-5.0 ml / g. In addition, the said water absorption is the value calculated | required by using the method by the linseed oil in JIS pigment test method K5101, replacing oil with water, and making working time within 5 minutes.

  The petal-like powder having an average particle size of 1.0 to 30.0 μm is used. By using a powder having a mean particle size (hereinafter simply referred to as “particle size” is also an average particle size) within this range, a powdery dry feeling of powder cosmetics can be obtained, and cosmetics can be used. It is possible to obtain an excellent effect with no smearing due to the feeling of use such as smoothness and elongation of the cosmetic application. When the particle diameter is less than 1.0 μm, a feeling of good elongation cannot be obtained particularly when a powder cosmetic is applied. On the other hand, if it exceeds 30.0 μm, a smooth feeling of use when a powder cosmetic is applied cannot be obtained. In either case, the dry feeling of the powder cosmetic is also reduced. A preferred particle size is 5.0 to 20.0 μm. In order for the petal-like powder to be aggregated to have a particle size of 1.0 to 30.0 μm, the longitudinal direction is 0.1 to 30 μm and the thickness is 0.001 to 0.1 μm. preferable.

  In the use of the petal-like powder, when the powder is pulverized and the particle diameter is adjusted, 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, for example, Florite R (petal calcium silicate, particle size 25 μm) (manufactured by Tokuyama Corporation), Polonex C (petal calcium carbonate / calcium phosphate complex, particle size 10 μm) (Maruo Calcium Co., Ltd.) Company-made). The chemical formula of the fluorite R _{is, 2CaO · 3SiO 2 · nSiO 2} · mH 2 O (m in the formula, n is 2 <m <3,1 <n < 2.), Crystal system modification It is a gyrolite. The particle diameter (D ₅₀ ) is 20 to 30 μm, and the pore radius has a peak in the vicinity of 0.1 μm.

  In the present invention, by using a petal-like powder having an average particle size of 1.0 to 30.0 μm, it is possible to obtain a powdery cosmetic powder having a dry feeling even when a large amount of water is added. This powder cosmetic is stable and provides a sufficient refreshing feeling. Furthermore, it has an excellent feeling of use such as smoothness and elongation of the cosmetic application when using the cosmetic.

  The water content used in the present invention is 5 to 65% by mass in the total amount of the powder cosmetic. If the content is less than 5% by mass, the refreshing feeling of the powder cosmetic cannot be obtained sufficiently. On the other hand, when it exceeds 65% by mass, the powdery dry feeling of the powder cosmetic cannot be obtained, and the elongation and stability of the cosmetic applied are also deteriorated. More preferably, it is 5-55 mass%.

  The content ratio (mass ratio) of water and petal-like powder (water / petal-like powder (mass ratio)) is 0.4 to 5.5 from the viewpoint of the refreshing feeling and usability of the powder cosmetic. When the content ratio is less than 0.4, a refreshing feeling cannot be obtained, and when it exceeds 5.5, the powdery smooth feeling is deteriorated and the elongation at the time of applying the cosmetic is also deteriorated. The preferred range is 0.5 to 4.0.

  The powder component to be blended in the powder cosmetic according to the present invention may be only the petal-like powder, but in order to broaden the form and usability of the powder cosmetic, for example, imparting color tone, ultraviolet shielding effect, makeup Other powders can be appropriately blended for the purpose of improving the effect and adjusting the feel. Other powders are not particularly limited as long as they are powders usually used in cosmetics. For example, talc, sericite, mica, kaolin, silicic acid anhydride, barium sulfate, zinc oxide, titanium oxide, iron oxide, Examples include inorganic powders such as boron nitride, acrylic polymers such as silk, nylon and polymethyl methacrylate (PMMA), polymer powders such as polyurethane, silicone, polyethylene, and cellulose, organic pigments, and composite powders thereof. It is done. These other powders can also be used as powders surface-modified with metal soap, silicone, fluorine or the like. One or more kinds of other powders are arbitrarily selected and used.

  The total powder content of the petal-like powder and other powders in the present invention is preferably 25.0 to 95.0% by mass, more preferably 35.0 to 90.0%, based on the total amount of the powder cosmetic. % By mass.

  In addition to the above-mentioned components, the powder cosmetic according to the present invention can be appropriately mixed with other components usually used in cosmetics, quasi-drugs, pharmaceutical compositions and the like within a range not impairing the effects of the present invention. . For example, you may mix | blend a water-soluble component with water. Examples of the other components include oils, dyes, polymer compounds, fragrances, surfactants, antioxidants, preservatives, moisturizers, polyhydric alcohols, lower alcohols, saccharides, UV absorbers, whitening agents, skin. Examples include activators, blood circulation promoters, antiseborrheic agents, anti-inflammatory agents and the like, astringents, and refreshing agents. Furthermore, emulsion compositions, such as an oil-in-water emulsion composition and a water-in-oil emulsion composition, can also be mix | blended. In addition, about the mixing | blending of an oil component, what mixed oil with a part of said petal-like powder can also be mix | blended.

  The powder cosmetic of the present invention can be prepared according to a conventional method by blending the above components. In particular, it is preferable to prepare the powder cosmetic by mixing the petal-like powder and water and then mixing with other components.

  Further, in the preparation of the powder cosmetic of the present invention, it is used within the range that does not impair the petal shape, similar to the pulverization of the petal powder. A pulverizer and a mixer used for mixing, dispersing, and pulverizing ordinary powder cosmetics can be used as necessary. Examples of the crusher include a compression crusher, a shear crusher, an impact crusher, a ball medium crusher, and an airflow crusher, and examples of the mixer include a container rotary mixer, a high-speed fluid mixer, and a vibration mixer. be able to.

  It is considered that water in the powder cosmetic of the present invention is included in the petal-like powder by capillarity, whereby the appearance becomes a powder form.

  Specific examples of the powder cosmetic of the present invention include, but are not limited to, white powder, blusher, body powder, aromatic cosmetics, eye shadow, foundation, lipstick and the like.

  Hereinafter, the present invention will be specifically described with reference to examples. A compounding quantity is the mass%.

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

[Production Example 1: Petal-like magnesium carbonate]
Carbon dioxide 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 the petal-like magnesium carbonate was observed by SEM, 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 size was 14. It was confirmed to be 0 μm. The water absorption was 1.7 ml / g.

[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 40.0 μm. . The water absorption was 5.3 ml / g.

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

(Usability, usability)
Evaluation was performed based on the following four-step evaluation by 10 professional panels for the dry feeling of powder when the cosmetic was taken, the smoothness of application of the cosmetic when using the cosmetic, and the elongation.

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

(Sensation of coolness)
An evaluation based on the following four-step evaluation by 10 professional panels was performed based on the refreshing feeling during and after the cosmetic application.

(4-level evaluation)
4: I feel very much.
3: I feel a little.
2: I don't feel much.
1: I don't feel it.

  The average score per person was calculated from the scores evaluated in four stages by the above effect test method, and the score was evaluated based on the following evaluation criteria.

(Evaluation criteria)
A: From 3.5 to 4.0 ○: 2.5 to less than 3.5 Δ: 1.5 to less than 2.5 x: 1.0 to less than 1.5

(Stability)
Stability was confirmed by putting the powdery cosmetic into a 5 ml test tube and applying ultrasonic waves of 28 kHz for 10 minutes.

(Evaluation criteria)
○: Stable without water separating from the powdery cosmetic.
X: Water is separated from the powdery cosmetic and is unstable.

[Examples 1 to 13, Comparative Examples 1 to 10]
Powder cosmetics having the ingredients and blending amounts shown in Tables 1 to 3 (total blending amount: 100% by mass) were prepared by the following method. Moreover, the effect test result was collectively described in Tables 1-3.

(Preparation method)
Each powder material is mixed, together with other components other than liquid components, uniformly dispersed, mixed and pulverized with a Henschel mixer and atomizer, and the liquid components are uniformly dispersed in the resulting bulk with a Henschel mixer. The material was prepared.

In Tables 1-3,
Note 1: Polonex C (petal-like calcium carbonate / calcium phosphate complex) (average particle diameter 10 μm: water absorption 1.6 ml / g) (manufactured by Maruo Calcium Co., Ltd.)
Note 2: Petal-like magnesium carbonate in Production Example 1 (average particle size 14 μm: water absorption 1.7 ml / g)
Note 3: Fluorite R (average particle size 25 μm: water absorption 4.6 ml / g) (manufactured by Tokuyama Corporation)
Note 4: A pulverized product of Fluorite R (manufactured by Tokuyama Co., Ltd.) (using an airflow pulverizer, average particle size 9 μm: water absorption 4.1 ml / g)
Note 5: A pulverized product of Fluorite R (manufactured by Tokuyama Co., Ltd.) (using an airflow pulverizer, average particle size 4.0 μm: water absorption 3.7 ml / g)
Note 6: Petal-like calcium silicate of Production Example 2 (average particle size 40 μm: water absorption 5.3 ml / g)
Note 7: Ground product of Fluorite R (using air pulverizer, average particle size 0.4 μm: water absorption 2.5 ml / g)
Note 8: Keikal beads (average particle size 24 μm: water absorption 0.9 ml / g) (manufactured by Nippon Chemical Co., Ltd.))
Note 9: Silo Pure # 25 (average particle size 4.0 μm: water absorption 3.0 ml / g) (Fuji Silysia Ltd.)
Note 10: Sunfresh ST-500MPSC (average particle size 30 μm: water absorption 400 ml / g ^* ) (Sundia Polymer Co., Ltd.)
Note 11: AEROSIL R972 (average particle size 0.04 μm: water absorption 4.2 ml / g) (Nippon Aerosil Co., Ltd.)
*: Tea bag method: JIS K 7223: 1996
Note 12: Gantz Pearl GM-2000 (Gantz Kasei Co., Ltd.)
Note 13: Plate-like barium sulfate HM (Sakai Chemical Co., Ltd.)
Note 14: SA-talc JA46R (Miyoshi Kasei Co., Ltd.)

  As is apparent from Tables 1 and 2, the powder cosmetic containing a specific ratio of water with a specific amount of petal-like powder and a specific amount of petal-like powder according to the present invention is excellent in refreshing feeling, Usability, feeling of use, and stability are good because it is in a dry powder state. In particular, when calcium silicate is used as the powder, it can be seen that the feeling of use is remarkably excellent.

  On the other hand, as is clear from Table 3, the powder cosmetics of Comparative Examples 1 and 2 in which the petaloid powder whose particle size range is outside the scope of the present invention and the blending amount of water are within the scope of the present invention. Comparative Examples 7 and 8 in which the powder cosmetics and water / petal powder (mass ratio) deviate from the scope of the present invention are blended with the powder cosmetics in Comparative Examples 6 and 9 and the non-petal powder. None of the powder cosmetics of Comparative Example 10 containing -5 powder cosmetics and calcium silicate which is not petal-like powders cannot exhibit the effects of the present invention.

  Hereinafter, examples of the powder cosmetic of the present invention will be described. In addition, petal-like powder and water are uniformly dispersed and mixed with a Henschel mixer, and the resulting bulk is uniformly dispersed, mixed and pulverized with other powder components and Henschel mixer and atomizer. A cosmetic was produced. Moreover, when the said effect test was done in these, the outstanding effect was acquired in all.

[Example 14] Body powder component content (mass%)
Petal-like calcium silicate (Note 1) 20.0
Talc 13.0
Mica 17.5
Spherical polyalkyl methacrylate (Note 2) 5.0
Water 30.0
Glycerin 10.0
Colorant (pearl agent, iron oxide, titanium oxide) 4.0
Antioxidant 0.5

Note 1: Ground product of FLORITE R (manufactured by Tokuyama Co., Ltd.) (using airflow grinder, particle size 9 μm, water absorption 4.1 ml / g)
Note 2: Gantz Pearl GM-2000 (manufactured by Gantz Kasei Co., Ltd.)

[Example 15] Blusher component content (mass%)
Petal-like calcium silicate (Note 1) 15.0
Talc 13.0
Mica 7.5
Barium sulfate (Note 2) 15.0
Water 42.0
Chamomile extract 3.0
Colorant (pearl agent, iron oxide, titanium oxide) 4.0
Antioxidant 0.5

Note 1: Ground product of FLORITE R (manufactured by Tokuyama Co., Ltd.) (using airflow grinder, particle size 9 μm, water absorption 4.1 ml / g)
Note 2: Plate-like barium sulfate HM (Sakai Chemical Co., Ltd.)

[Example 16] Eye shadow component content (mass%)
Petal-like calcium silicate (Note 1) 15.0
Talc 17.5
Zinc stearate 4.0
(Vinyl dimethicone / methicone silsesquioxane) cross polymer (Note 2)
5.0
Water 30.0
Neopentyl glycol diethylhexanoate 2.0
Phenyltrimethicone (Note 3) 1.0
Colorant 10.0
(Organic tar pigment, Bengala, titanium oxide)
Mica titanium 15.0
Antioxidant 0.5

Note 1: Ground product of FLORITE R (manufactured by Tokuyama Co., Ltd.) (using airflow grinder, particle size 9 μm, water absorption 4.1 ml / g)
Note 2: KSP-100 (manufactured by Shin-Etsu Chemical Co., Ltd.)
Note 3: KF-56 (manufactured by Shin-Etsu Chemical Co., Ltd.)

[Example 17] Cosmetic powder component blending amount (mass%)
Petal-like calcium silicate (Note 1) 20.0
Barium sulfate (Note 2) 15.5
Boron nitride 3.0
Water 25.0
Glycerin 10.0
Nanoemulsion (Note 3) 5.0
Sodium hyaluronate (Note 4) 1.0
Soybean extract (Note 5) 1.0
Olive oil 13.0
Ascorbyl tetrahexyldecanoate 5.0
Colorant 1.0
(Bengara / Titanium oxide)
Antioxidant 0.5

Note 1: Ground product of FLORITE R (manufactured by Tokuyama Co., Ltd.) (using airflow grinder, particle size 9 μm, water absorption 4.1 ml / g)
Note 2: Plate-like barium sulfate HM (Sakai Chemical Co., Ltd.)
Note 3: NIKKOL Nicosome OS (manufactured by Nikko Chemicals Co., Ltd.)
Note 4: Bio Sodium Hyaluronate HA12 (manufactured by Shiseido Co., Ltd.)
Note 5: Flavosterone SB (manufactured by Ichimaru Falcos)

Claims (2)

A powder cosmetic containing 5 to 65% by mass (excluding 40% by mass or more) of water in the total amount of petal-like powder and powder cosmetic with an average particle size of 1.0 to 30.0 μm, wherein the water the mass ratio of the petal-like powder (water / petals powder (weight ratio)) is Ri der 0.4 to 5.5, the water being included in said petaloid powder appearance powder form der Ru said powder cosmetic.   The powder cosmetic according to claim 1, wherein the petal-like powder is calcium silicate.