JP2010275240A - Solid powder cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solid powder cosmetic which gives smooth feeling of use and has an outstanding dropping strength (stability). <P>SOLUTION: The solid powder cosmetic containing decaglycerol (caprylic acid/capric acid) ester and dipentaerythrityl tri-polyhydroxystearate gives high flexibility and smooth feeling of use, and has an outstanding dropping strength (stability). <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

    The present invention relates to a solid powder cosmetic containing decaglycerin (caprylic acid / capric acid) ester and dipentaerythrityl tripolyhydroxystearate.

    Conventionally, foundations have been used for the purpose of adjusting skin color and concealing defects such as skin spots and freckles, and various forms such as oily type, emulsion, solid, and powder are provided. Various forms of eye colors and blushers have been provided for the purpose of changing the appearance and making them look healthy and beautiful. Recently, portability of being filled in a compact container and being portable and good usability without dusting are preferred, and solid powder cosmetics have been frequently used.

    The solid powder cosmetic is prepared by adding a binder, a silicone polymer, or the like to a powder raw material, kneading, filling the cosmetic container such as a metal dish, and compression molding. In this case, if a large amount of smooth and smooth powder is blended, it will be tightened too much, and the so-called caking phenomenon will occur, resulting in a decrease in the trembling with a sponge or other applicator. May cause problems.

    So far, solid powder cosmetics have been highly blended with plate-like powders such as mica and sericite in order to produce a moist feeling on the sensory side. Since such powders have a high refractive index, high blending increases the regular reflectance of the coating film and can be expected to have a gloss-improving effect, but its hardness decreases and the drop strength (stability) is There was a tendency to decrease.

    Therefore, in order to improve the stability of solid powder cosmetics, measures such as adjusting the amount of binder and limiting the amount of mica, sericite, etc. have been taken, but the hardness has increased. Flexibility and smooth usability were impaired. There has been a demand for a solid powder cosmetic that is highly flexible, has a smooth feeling of use, and has excellent drop strength (stability).

For example, it is characterized by blending a powder for cosmetics (Patent Document 1) from which a cosmetic such as a foundation excellent in durability, drop strength, ultraviolet ray blocking effect and pigment dispersibility is obtained, and pentaerythritol benzoate. Powder cosmetics (Patent Document 2), usability, makeup retention, adhesion to skin, smoothness and smoothness of powder cosmetics (Patent Document 3), usability, safety and stability are significantly improved Make-up cosmetics (Patent Document 4), compact cosmetic powder compositions (Patent Document 5), cosmetics excellent in lightness, smoothness, and melt filling properties (Patent Document 6) are disclosed.
JP 2006-225363 A JP 2006-298825 A JP 2007-22951 A JP 2008-50271 A JP 2008-120814 A JP 2002-128638 A

    An object of the present invention is to provide a solid powder cosmetic that has high flexibility, imparts a smooth feeling of use, and has excellent drop strength (stability).

    Solid powder cosmetics containing decaglycerin (caprylic acid / capric acid) ester and dipentaerythrityl tripolyhydroxystearate have high flexibility, give a smooth feeling of use, and have excellent drop strength (stability) As a result, the present invention has been completed.

    According to the present invention, it is possible to provide a solid powder cosmetic having high flexibility, a very smooth feeling of use, and high drop strength (stability).

FIG. 1 is a bar graph showing surface hardness in the solid powder foundations of Example 1 and Comparative Examples 1, 2, and 3. FIG. 2 is a bar graph showing the drop strength in the solid powder foundations of Example 1 and Comparative Examples 1, 2, and 3. FIG. 3 is a bar graph showing smoothness in the solid powder foundations of Example 1 and Comparative Examples 1, 2, and 3. FIG. 4 is a bar graph showing palatability in the solid powder foundations of Example 1 and Comparative Examples 1, 2, and 3.

    The decaglycerin (caprylic acid / capric acid) ester used in the present invention is preferably dodeca (caprylic acid / capric acid) polyglyceryl-10, most preferably Sun Oil DOC-10P manufactured by Taiyo Kagaku.

    The amount of decaglycerin (caprylic acid / capric acid) ester used in the present invention is preferably 0.1 to 6.0% by mass, and 1.0 to 6.0% by mass with respect to the total amount of the solid powder cosmetic. Is more preferable, and 1.0 to 3.0% by mass is most preferable.

    As the dipentaerythrityl tripolyhydroxystearate used in the present invention, Saracos (registered trademark) WO-6 manufactured by Nisshin Oilio Co., Ltd. is most preferable.

    The blending amount of dipentaerythrityl tripolyhydroxystearate used in the present invention is preferably 0.01 to 3.0% by mass, more preferably 0.01 to 1.0% by mass, based on the total amount of the solid powder cosmetic. .1 to 1.0% by mass is most preferable.

    The “flexibility” used in the present invention refers to the hardness in a solid powder cosmetic, and refers to giving a soft feel to the skin and the goodness of the application by means of an applicator such as a sponge.

    In the solid powder cosmetic used in the present invention, other powders, other oil components, glycols, pigments, fragrances, water-soluble polymers, and the like may be appropriately blended within a range that does not impair the purpose and effect of the present invention. it can.

[Example 1]
Four types of solid powder foundations (Example 1, and Comparative Examples 1, 2, and 3) were prepared.

Procedure for preparation of solid powder foundation The components (1) to (7) are mixed and stirred.
Procedure 2. The components (8) and (9) are mixed.
Procedure 3. The components (10) and (11) are mixed.
1, 2 and 3 are added and kneaded, and then pulverized with an atomizer. After sieving, it was filled into a metal pan and compression molded.

[Example 2]
[Measurement of hardness]
Surface hardness was measured as a measure of the flexibility and loosening of the solid powder foundation.

[Measuring method]
An ASKER CL-150 rubber hardness tester (JAL type) was used, and the pressing speed was set as an air damper 6. After measuring four points on one sheet and five points on one center, the average of the three sheets was taken. The result is shown in FIG.

[Evaluation methods]
The average value was evaluated according to the criteria shown below from the one having high flexibility (low hardness value), and the results are shown in Table 1.
◎: Hardness value is less than 14 ○: Hardness value is 14 or more and less than 15 Δ: Hardness value is 15 or more and less than 16 ×: Hardness value is 16 or more

    From the above results, it can be seen that the solid powder foundation [Example 1] containing decaglycerin (caprylic acid / capric acid) ester and dipentaerythrityl tripolyhydroxystearate has high flexibility. Usability around the skin is good.

[Example 3]
[Measurement of drop strength]
The purpose is to examine the resistance of a solid powder foundation to falling of a metal dish filled product.

[Test method]
A drop strength tester is used to mount the filled metal product in a container and drop it horizontally from a height of 50 cm onto a polyethylene plate (thickness 2 cm). The number of times until the press surface is lifted, cracked or cracked is taken as the drop strength. For example, when cracking occurred in the fifth drop, it was recorded as 4 times, and an average of 3 sheets was adopted. The result is shown in FIG.

[Evaluation methods]
The average value was evaluated according to the criteria shown below from the one with high drop strength, and the results are shown in Table 1.
◎: Number of drops 6 times or more ○: Number of drops 5 to less than 6 △: Number of drops 4 to less than 5 times ×: Number of drops less than 4

    From the above results, it was found that the solid powder foundation [Example 1] containing decaglycerin (caprylic acid / capric acid) ester and dipentaerythrityl tripolyhydroxystearate had excellent drop strength.

[Example 4]
[Usage evaluation]
About the said Example 1 and Comparative Examples 1, 2, and 3, the use test was done to 12 female panelists engaged in the cosmetics development of 20-40 years old. In the use test, each panel of 12 people in each group used Example 1 and Comparative Examples 1, 2, and 3 blindly, and sensory evaluation was performed on [smoothness] and [preference]. The evaluation results were scored according to the evaluation criteria shown in Table 2, and the average value of 12 people was calculated.

The average value was evaluated according to the criteria shown below from the one with high [smoothness], and the results are shown in Table 1 and FIG.
◎: 4.2 points or more ○: 3.8 points or more and less than 4.2 points Δ: 3.4 points or more and less than 3.8 points ×: less than 3.4 points

The average value was evaluated according to the criteria shown below from those having high [preference], and the results are shown in Table 1 and FIG.
◎: 4.8 points or more ○: 4.0 points or more and less than 4.8 points Δ: 3.2 points or more and less than 4.0 points x: Less than 3.2 points

    Based on the above, the solid powder cosmetic containing decaglycerin (caprylic acid / capric acid) ester and dipentaerythrityl tripolyhydroxystearate has a high flexibility in surface hardness, such as torr or skin by the applicator. Usability is good. It has also been found that it gives a very smooth feeling of use and has excellent drop strength (stability).

製法：（１）と（７）とを混合機中で混合し、ついで（２）〜（６）を順次添加混合し、あらかじめ混合した（８）〜（１２）を噴霧して均一に混合した後、金皿に充填し圧縮成形する。 The preparation example of a solid powder cosmetic is shown below.
[Example 5] Powder eye color

Production method: (1) and (7) are mixed in a mixer, then (2) to (6) are sequentially added and mixed, and previously mixed (8) to (12) are sprayed and mixed uniformly. After that, it is filled into a metal pan and compression molded.

製法：（１）〜（８）を混合し展色した後、あらかじめ混合した（９）〜（１３）を加え均一に混合し、（１４）を噴霧して加えて均一に混合し、金皿に充填して固化させる。 [Example 6] Solid cheek color

Manufacturing method: (1) to (8) are mixed and developed, and (9) to (13) previously mixed are added and mixed uniformly, and (14) is sprayed and added to mix uniformly. Fill and solidify.

製法：（１）と（８）〜（１０）を混合し、次いで（２）〜（７）を加えて混合した後、あらかじめ混合した（１１）〜（１４）を加え、さらに（１５）を噴霧して均一とした後、ふるいを通して製品とする。 [Example 7] Shadow color

Production method: (1) and (8) to (10) are mixed, then (2) to (7) are added and mixed, (11) to (14) mixed in advance are added, and (15) is further added. After spraying and homogenizing, the product is passed through a sieve.

    Solid powder cosmetics containing decaglycerin (caprylic acid / capric acid) ester and dipentaerythrityl tripolyhydroxystearate provide a high flexibility and a smooth feeling of use, and have excellent drop strength (stability) Cosmetics can be provided.

Claims (1)

    A solid powder cosmetic comprising decaglycerin (caprylic acid / capric acid) ester and dipentaerythrityl tripolyhydroxystearate.

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