JP2011011988A - Solid powder cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solid powder cosmetic that is obtained by packing a plurality of kinds of powder cosmetics produced by dry molding into the same container, has improved impact resistance and excellent sense of use.SOLUTION: In the solid powder cosmetic obtained by packing a plurality of kinds of powder cosmetics into the same container by dry molding, each of the plurality of kinds of powder cosmetics contains (A) 30-50 mass% of silicone-treated talc, (B) 10-20 mass% of metal soap-treated talc and (C) 0.5-3 mass% of glyceryl triisostearate.

Description

  The present invention relates to a solid powder cosmetic comprising a plurality of types of powder cosmetic filled in the same container. More specifically, the present invention relates to a solid powder cosmetic excellent in impact resistance and usability.

  Among makeup cosmetics, so-called multicolor molded products, in which two or more colors of cosmetics are molded in one container (medium dish) as a solid powder cosmetic such as white powder, are commercially available and have an unprecedented makeup effect. It is getting.

When filling a plurality of powdered cosmetics in one container like a multicolor molded product, generally, after filling the cosmetics by partitioning each cosmetic filling part with a partition, and removing the partition Dry molding and wet molding are known as methods for molding a solid powder cosmetic that is molded by compressing the whole. Dry molding is a method in which each powder cosmetic is supplied to parts partitioned by partitions in a container, each part is separately pre-pressed, the partition is removed, and the whole is pressed (Patent Document 1). Wet molding is a method in which a solvent or the like is added to a powdered cosmetic material to be filled to form a slurry, and the partitioned portion is filled to evaporate the solvent and then the partition is removed and pressed (Patent Document 2). In conventional multicolor molded products, wet molding has been mainly used for ease of filling.

On the other hand, solid powder cosmetics have a problem that they are easily cracked by impact because they contain a small amount of non-volatile oil, which originally functions as a binder for powders.
Although it is not a multicolor molded product, for solid powder cosmetics manufactured by wet molding, cracking is prevented and impact resistance and usability are improved by devising the ingredients and improving the manufacturing method. It has been proposed (Patent Documents 3 and 4).

For solid powder cosmetics in which a plurality of powder cosmetics are filled in the same container by dry molding, such as multicolor molded products, it has been studied to increase the oil content or increase the press pressure. However, an increase in the oil content deteriorates usability and removal from the molded product. Increasing the press pressure similarly deteriorates usability and removal from the molded product, and also causes insufficient cracking. The improvement remained.
In recent years, there has been a tendency to demand a molded product having a complicated shape and excellent design properties (Patent Document 5), and further improvement in impact resistance has been desired.

JP 59-44205 A JP-A-60-67408 JP 2006-169207 A JP 2001-213722 A JP 2007-55941 A

  Therefore, the problem in the present invention is to improve the impact resistance of a solid powder cosmetic filled with a plurality of types of powder cosmetics produced by dry molding in the same container and to have a superior usability. It is to provide.

  As a result of intensive studies to solve the above-mentioned problems, the present inventor has formulated a solid powder excellent in impact resistance and usability by blending specific ingredients into a powder cosmetic to be filled in a predetermined ratio. The present inventors have found that a powder cosmetic can be obtained and have completed the present invention.

That is, the present invention is a solid powder cosmetic in which a plurality of types of powder cosmetics are filled in the same container by dry molding, and each of the plurality of types of powder cosmetics includes:
(A) 30-50 mass% silicone-treated talc,
(B) 10 to 20% by mass of metal soap-treated talc, and (C) 0.5 to 3% by mass of glyceryl triisostearate,
A solid powder cosmetic characterized by comprising

  In the solid powder cosmetic of the present invention, each powder cosmetic composing it contains silicone-treated talc, metal soap-treated talc, and glyceryl triisostearate in a predetermined ratio. Thus, capping (a phenomenon of peeling in a layered manner in a direction perpendicular to the compression axis) that has been seen in conventional solid powder cosmetics is prevented, and has excellent impact resistance and extremely good usability.

It is a top view which shows an example of the solid powder cosmetics of this invention. It is a top view which shows arrangement | positioning of the apparatus for manufacturing the solid powder cosmetics shown in FIG.

  As described above, the solid powder cosmetic of the present invention is a solid powder cosmetic obtained by filling a plurality of types of powder cosmetics in the same container by dry molding. In particular, when at least one of the plurality of types of powder cosmetics is a solid powder cosmetic arranged so as not to contact the container, the effects of the present invention are remarkably exhibited. This will be described below with reference to the drawings.

  FIG. 1 is a top view showing an example of the solid powder cosmetic of the present invention. The interior of the container (medium dish) 1 is filled with powder cosmetics a (11) and powder cosmetics b (12). In the solid powder cosmetic of this example, the side of the powder cosmetic B (12) arranged in an island shape at the center of the container is not in contact with the container 1. In such an example, inevitably, at least one powder cosmetic (b) disposed between the powder cosmetic (b) and the wall surface of the container is included.

  In the present invention, the solid powder cosmetic as shown in FIG. 1 is produced by dry molding. Specifically, as shown in FIG. 2, a partition member (21) is disposed inside the container 1, and each portion partitioned by the partition member (21) is filled with powder cosmetics A and B, respectively. To do. Next, after each of the filled powder cosmetics is pre-pressed simultaneously or separately, the partition member (21) is removed and the entire interior of the container 1 is pressed.

The portion of the powder cosmetic (powder cosmetic B in FIG. 1) pressed by dry molding without contacting the wall surface of the container as indicated by reference numeral 12 in FIGS. 1 and 2 is particularly easy to break and peel off. .
In order to overcome such drawbacks, the solid powder cosmetic of the present invention contains silicone-treated talc (component A), metal soap-treated talc (component B), and glyceryl triisostearate (component C) in a predetermined ratio. ing.

  The silicone-treated talc (component A) in the present invention is obtained by treating the surface of talc that has been conventionally blended in cosmetics with silicone oil, and is known per se, and examples of blending in cosmetics are also known. Yes. As the silicone-treated talc in the present invention, talc treated with a branched alkyl silicone is particularly preferable.

  Examples of the branched alkyl silicone-treated talc used in the present invention include a branched alkyl silicone treating agent (for example, a commercial product represented by the following general formula (1): KF-9909 manufactured by Shin-Etsu Chemical Co., Ltd.), isopropyl alcohol, and the like. Can be prepared by adding a mixed solution of volatile organic solvent to talc powder, stirring uniformly with a mixer such as a Henschel mixer, and removing the solvent in a heating step.

(Where, a = 5-15, b = 1-5, c = 1-3, d = 1-5, n = 3-15)

In the present invention, commercially available branched alkylsilicone-treated talc can also be used. Examples of such branched alkylsilicone-treated talc include NS talc JA-46R-3S (manufactured by Kaku Yato foil Co., Ltd.), BAE-talc JA-68R. (Manufactured by Miyoshi Kasei Co., Ltd.).
A particularly preferable branched alkyl silicone-treated talc is a modified silicone having a silicone main chain and an alkyl side chain in the silicone main chain, and having an ethoxy group as a reaction point with the powder. KF-9909 (manufactured by the above formula) (See (1)). This branched alkyl silicone-treated talc is very strong in hydrophobicity and water resistance and has excellent adhesion to the skin.

  The compounding quantity of the silicone processing talc in this invention is 30-50 mass%, Preferably it is 30-40 mass%. It is considered that the ease of peeling (capping) was eliminated by blending the predetermined amount of silicone-treated talc.

  In the present invention, the metal soap-treated talc (component B) has a talc surface of a fatty acid such as capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, Zn, Ca, Al, Mg, Zr, Ti, etc. In particular, talc that has been surface treated with calcium stearate is preferred.

  The compounding quantity of the metal soap process talc in this invention is 10-20 mass%, Preferably it is 10-15 mass%. By blending the predetermined amount of the metal soap-treated talc, it is considered that variations in characteristics such as impact resistance between powder cosmetics having different compositions are suppressed, and a moist feeling of use can be obtained.

  The compounding quantity of the glyceryl triisostearate in this invention is 0.5-3 mass%, Preferably it is 0.5-2.0 mass%. By blending the above-mentioned predetermined amount of glyceryl triisostearate, it is considered that excellent impact resistance is exhibited even if a portion that does not contact the container is included.

The solid powder cosmetic of the present invention may contain other components usually used in makeup cosmetics such as white powder, as long as the effects of the present invention are not impaired.
Representative examples include inorganic pigments such as titanium oxide, zinc oxide, red iron oxide, yellow iron oxide, and black iron oxide, pearlescent pigments, colorants such as natural pigments (coloring materials), and silicone elastomers. These coloring materials may be different in some or all of the plurality of powder cosmetics constituting the solid powder cosmetic of the present invention. That is, the cosmetic of the present invention can be a multicolor solid powder cosmetic that exhibits a plurality of appearance colors or interference colors.

  As other optional components, powders other than the essential components (other than coloring materials), such as talc (excluding silicone-treated talc and metal soap-treated talc), mica, sericite, kaolin, synthetic mica, calcium carbonate, Examples thereof include spherical resin powders such as magnesium carbonate, silica, aluminum oxide, barium sulfate, boron nitride, acrylic polymer, nylon, polystyrene, polyethylene, polypropylene, polyurethane, cellulose, silicone, and copolymers thereof. One or two or more powders in the present invention can be arbitrarily selected and blended.

  The powder cosmetic of the present invention may optionally contain an oil agent, and the oil agent that can be added is not particularly limited as long as it is an oil agent conventionally used as an oil for cosmetics. Ester, hydrocarbon, higher fatty acid, higher Alcohol, silicone oil, etc. are mentioned. Examples of the oil agent comprising the ester include, for example, oils such as olive oil, castor oil, jojoba oil, macadamia nut oil, fatty acids such as isopropyl myristate, isopropyl palmitate, cetyl 2-ethylhexanoate, octyldodecyl myristate Monoesters, glyceryl esters such as glyceryl trioctanoate and glyceryl triisostearate, polyglycerin esters such as diglyceryl diisostearate and diglyceryl triisostearate, penta such as di-2-ethylhexanoic acid pentaerythritol and dioctanoic acid pentaerythritol Trimethylolpropane esters such as erythritol ester, trimethylolpropane trioctanoate, trimethylolpropane triisostearate, phosphorus such as diisostearyl malate It is an acid ester, and the like. Examples of the hydrocarbon include liquid paraffin, squalane, polybutene, liquid lanolin, and volatile hydrocarbon. Examples of higher fatty acids include isostearic acid and oleic acid. Examples of higher alcohols include isostearyl alcohol, oleyl alcohol, octyldodecanol, and the like. Examples of the silicone oil include dimethylpolysiloxane, methylphenylpolysiloxane, diphenylpolysiloxane, cyclic silicone (octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexanesiloxane, etc.), amino-modified polysiloxane, alkyl Examples thereof include modified polysiloxane and fluorine-modified polysiloxane.

  The powder cosmetic of the present invention may optionally contain a solid oil, and the solid oil that can be added is not particularly limited as long as it is an oil that can be added to the cosmetic. Specific examples of solid oils include solid paraffin, ceresin, microcrystalline wax, polyethylene wax, hydrogenated oil, beeswax, mole, gay wax, candelilla wax and other hydrocarbons, waxes, waxes, stearic acid, lauric acid, myristic acid. Higher fatty acids such as behenic acid, higher alcohols such as cetyl alcohol, stearyl alcohol, and lauryl alcohol.

  In addition to the above-described components, other components used in normal cosmetics, quasi-drugs, pharmaceuticals, and the like can be appropriately blended with the powder cosmetic of the present invention as long as the effects of the present invention are not impaired. Other components include, for example, surfactants, humectants, polymers, dyes, lower alcohols, polyhydric alcohols, antioxidants, UV absorbers, cosmetic ingredients, antibacterial agents, antiseptics, pH adjusters, fragrances, etc. Can be mentioned.

  Hereinafter, the present invention will be described in more detail with specific examples, but the present invention is not limited to the following examples. Moreover, the compounding quantity in a following example etc. shows the mass% unless there is particular notice.

(Examples and Comparative Examples)
For each of Examples 1 to 3 and Comparative Examples 1 to 3 listed in Table 1 below, a plurality of powder cosmetics exhibiting different colors are prepared by appropriately adjusting the colorant blending amounts (*) to (***). Prepared. Next, the powder cosmetics of a plurality of colors prepared for each example were filled in the respective compartments of the container in which the grid-like partition members that divide the interior of the container into a plurality of substantially rectangular parallelepipeds were arranged, as described above (paragraph 0014). Molded by an appropriate dry molding method. A drop test and a usability test were performed on the obtained cosmetics of each example (each of which is composed of a plurality of color powder cosmetics) and evaluated according to the following criteria. The results are also shown in Table 1.

Measurement method and evaluation criteria:
-Drop strength was dropped from a height of 30 cm, and the presence or absence of cracks was examined visually.
(Double-circle): It cracked by the drop test 6 times or more.
○: Cracked by five drop tests.
Δ: Cracked by four drop tests.
X: Cracked by three drop tests.
-Usability A sensory test was conducted by 10 experts.
A: Very good.
○: Good △: Not good ×: Not good

Adjustment ¹⁾ : Amount based on 100 as a whole *, **, ***: Adjusted appropriately to obtain a multi-color composition.

As shown in Table 1, in Comparative Examples 1 and 2 in which either silicone-treated talc or metal soap-treated talc and glyceryl triisostearate were not blended, sufficient drop strength was not obtained. In particular, Comparative Example 2 containing no silicone-treated talc was inferior in usability, such as good spread, no whitishness, and smoothness.
On the other hand, Comparative Example 3 containing an excess amount of glyceryl triisostearate is excellent in drop strength, but has good spreading and whitishness even when a predetermined amount of silicone-treated talc and metal soap-treated talc is blended. It was extremely inferior in usability such as smoothness and smoothness.

(Formulation example 1) Eye shadow compounding component Compounding amount (mass%)
Silicone-treated talc 50
Metal soap treated talc 15
Sericite 5
Mica 5
Talc adjustment ¹⁾
Titanium oxide 0.1
Synthetic phlogopite 2
Zinc myristate 2
Yellow iron oxide appropriate amount (*)
Appropriate amount of black iron oxide (**)
Appropriate amount of dye (***)
P-Hydroxybenzoate appropriate amount liquid paraffin 0.5
Vaseline 1
Methylphenyl polysiloxane 2
Diisostearyl malate 1
Glyceryl triisostearate 2
Sorbitan sesquiisostearate 1
D-α-tocopherol 0.02
Total 100
(Adjustment ¹⁾ : Amount that makes the whole 100)
(Appropriate amounts (*), (**), (***): adjusted as appropriate to obtain a multi-color composition)

(Formulation example 2) Teak color blending component Blending amount (% by mass)
Silicone-treated talc 33
Metal soap treated talc 20
Sericite 10
Talc adjustment ¹⁾
Polymethylmethacrylate spherical powder 1
Zinc myristate 2
Titanium oxide 4
Color material appropriate amount (*)
Pearl agent 13
Vaseline 2
Diisostearyl malate 2
α-olefin oligomer 3
Methyl polysiloxane 2
Sorbitan sesquiisostearate 1
Antioxidant appropriate amount total 100
(Adjustment ¹⁾ : Amount that makes the whole 100)
(Suitable amount (*): adjusted as appropriate to obtain a multi-color composition)

1: Container 11: Powdered cosmetics a12: Powdered cosmetics b21: Partition member

Claims (4)

In the solid powder cosmetic obtained by filling a plurality of types of powder cosmetics in the same container by dry molding, each of the plurality of types of powder cosmetics,
(A) 30-50 mass% silicone-treated talc,
(B) 10 to 20% by mass of metal soap-treated talc, and (C) 0.5 to 3% by mass of glyceryl triisostearate,
A solid powder cosmetic comprising: The cosmetic according to claim 1, wherein at least one powder cosmetic of the plurality of types of powder cosmetic is disposed so as not to contact the container. The cosmetic according to claim 1 or 2, wherein the silicone-treated talc is talc treated with a branched alkyl silicone. The cosmetic according to any one of claims 1 to 3, wherein a part or all of the plurality of types of powder cosmetics is a multicolor molded product exhibiting different colors.