JPS6185309A - Solid powder cosmetic - Google Patents

Abstract

PURPOSE:A solid powder cosmetic that is obtained by adding spherical nylon powder, cosmetic powder and/or pigments and liquid oil in an specific proportion, thus satisfying both adhesion to skins and good feeling on application and improving powder flying on application, moldability and strength resisting to distribution. CONSTITUTION:The objective solid powder cosmetic contains, base on the total composition, a) 5-20wt% of spherical nylon powder of 2-20 micron, preferably 5-10 micron average particle sizes, b) 45-85wt% of cosmetic powder and/or pigments and c) 10-35wt% of liquid oil where a/c is 1 or less. The resultant cosmetic causes no powder flying on application, shows high adhesion to skins, good feeling on application (shading and extensibility), good moldability and high shock resistance. Thus, it is suitably used as a foundation or pressed make-up cosmetic such as cheek colors.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has no powder scattering during application, excellent adhesion to the skin, good feeling of use (ease of blurring, spreadability), good moldability, and durability. The present invention relates to a novel solid powder cosmetic with excellent impact properties, and is particularly intended to provide a pressed make-up cosmetic for 7-and-a-half eye makeup, cheek color, and the like.

Conventional solid powder cosmetics include various cosmetic powders, oils,
Composed mainly of oil-based ingredients such as fats and waxes, it is comfortable to use as a cosmetic product.

In order to obtain a feeling of use, various formulations of powders and oils and fats for cosmetics have been studied, with various shapes and properties. For example, to improve spreadability, we use spherical powder to take advantage of its shape, which has a small frictional force on the skin during application, and to improve adhesion to the skin, we use highly viscous oil. For the purpose of application to the skin and to maintain appropriate hardness during use, metal soaps are blended as a powder binder using its powder binding power.

However, powder scattering during application, which is an important element for cosmetics, and adhesion to the skin, that is, when applying with fingers, puffs, brushes, etc., powder scatters in the container and on clothes, making it difficult to get dirty. In order to eliminate the factors that cause discomfort when the powder gets in the eyes or make the makeup look floating, it is necessary to use solid powder powders. Is it possible to replace solid oil-based cosmetics, which is impossible in the past? 1. It was necessary to make it into an oil gel.

Specifically, it is necessary to use 40 or more oil-based ingredients for Momoe, and in this case, it is necessary to use ``usability'': or moldability, and distribution resistance strength (ML!!) to prevent damage during distribution and use of the product. In order to maintain sufficient strength to prevent
Not only does it require cooling equipment, which is inefficient in terms of production, but it also has a fatal flaw in solid cosmetics such as foundation, eye color, and cheek color, which is difficult to blur and gives a sticky feeling when used. produce defects. As a result, the areas in which they can be used are limited, and they are often used unsatisfactorily.

Therefore, as a result of intensive research to solve the problems faced by the solid powder cosmetics, the present inventors have developed a spherical nylon powder having a certain average particle diameter range, and a powder/pigment for cosmetics. We have discovered that when combined with liquid oil in a specific blending ratio and blending ratio, an excellent solid powder cosmetic that completely solves all of the conventional problems can be obtained, and we have learned this from the completion of the present invention.

That is, the present invention provides spherical nylon powder 5 to 201■
For cosmetics @J and/or (Ma) consists of 45 to 85 pigments and 10 to 35 liquid oil, and the blending ratio of spherical nylon powder and hostile oil is spherical nylon powder/ It is intended to be used as a solid powder cosmetic having a liquid oil content of ≦1.

Hereinafter, the configuration of the present invention will be explained in detail.

First, what is the spherical nylon powder that can be used in the present invention?
Compositionally, it is made of commercially available materials such as nylon-6 and nylon-12, among which those having an average particle size of 2 to 20 microns, preferably 5 to 10 microns, are selected. Here, when the average particle size is smaller than 2μ, the fine powder is arranged finely in the spaces between the cosmetic powders, the powder binding property is extremely enhanced, there is no powder scattering, and the powder does not touch the skin. Although the adhesion is improved, the drawbacks are that it is difficult to blur and spreads poorly. On the other hand, when the volume becomes louder than 20 tones, a rough feel appears and powder scattering becomes noticeable.

Further, the amount of spherical nylon powder blended is in the range of 5 to 20% by weight based on the total cosmetic composition. If the blending amount is less than 5 weight jlL%, the desired effects will be produced, 20 weight t
If it exceeds %, there will be a drawback that the color tone will not be applied when the cosmetic is applied to the skin, or the whiteness will be noticeable.

Next, the liquid oil may be one that is liquid or fluid at room temperature, such as squalane, am paraffin, oleyl alcohol, '9-noline alcohol,
Liquid lanolin, castor oil, hexadecyl alcohol, octyldodecyl myristate, isopropyl myristate, octyldodecyl oleate, cetyl 2-ethylhexanoate.

2-ethylhexanoic acid triglyceride, inglovir palmitate, inglovir dinophosphate.

Examples include silicone oil.

The amount of liquid oil to be blended is selected in the range of 10 to 35% by weight, preferably 15 to 30% by weight based on the total cosmetic composition. When the swelling is less than 10% by weight, the apparent oil content decreases due to the oil absorption by the powder components.
I cannot expect much improvement in adhesion to the skin, and on the other hand, 35-layer i
If it exceeds t%, it may give a sticky feeling or cause aggregation when powder components are coated and mixed with oil during production, making it impossible to obtain a high-quality cosmetic.

Same, I would like to add that solid oils such as itzu wax.

Solid breadfin, microcrystalline wax.

For spermaceti wax, ceresin, carnauba wax, candelilla wax, osichelite, etc., water-soluble bases such as glycerin, probile/glycol, ], ]3-butylene glycol, and fragrances, 35 heavy J1 in combination with liquid oil.
It can be used within the range of % or less. However, if one solid oil component is added, it may have an adverse effect on the feeling of use when blended in a large amount, so it is preferable to limit the amount used as much as possible. That is, as a guideline for blending the solid oil component, the amount that can be blended is a range that exhibits a liquid state at room temperature under a mixed state of the liquid oil component and the solid oil component.

Furthermore, the weight ratio of spherical nylon powder and liquid oil blended into the cosmetic needs to be spherical nylon powder/liquid oil ≦1.

If the amount of spherical nylon powder is greater than the amount of liquid oil, the adhesion of the obtained cosmetic to the skin will be insufficient and the amount of powder flying will increase due to the high oil absorption of the spherical nylon powder.

Next, as powders or pigments for cosmetics to be applied to the present invention, all powders and pigments commonly used in cosmetics can be used, such as Merck.

Extender pigments such as sericite, kaolin, magnesium silicate, magnesium carbonate, calcium carbonate, silicic anhydride,
White pigments such as titanium dioxide and zinc oxide, Penga 2. Inorganic pigments such as ferrous iron, chromium oxide, and group pigments, organic pigments such as tar pigments, and titanium mica.

Other examples include polyethylene powder, which is added in an amount of 45 to 85% by weight depending on the amount of spherical nylon powder and liquid oil.

As described above, in the present invention, it is possible to manufacture various solid powder cosmetics by selecting the above-mentioned various raw materials according to the purpose. For example, in the case of solid powder eye color, solid powder cheek color, solid powder foundation silan,
Mix spherical nylon powder with cosmetic powder and/or pigment, coat the surface of the powder or pigment with liquid oil, and fill and press into a container or container.
C Obtain a solid product.

Here, to describe the feature 1 of the present invention, by using together a spherical nylon padder having a certain average particle diameter range and a liquid oil component within a specific blending range, the oil absorption property of the spherical nylon powder can be improved. The powder binding effect derived from the combination with liquid oil is enhanced, and as a result, adhesion to the skin and feeling of use (ease of blending, spreadability), which may be contradictory factors in some cases, are enhanced. Furthermore, by using a small amount of oil, the formulation fζ is not oil-gel-like.
The objective is to obtain a solid powder cosmetic that has the same moldability and 1#4 flow strength without any problems, and does not cause any powder scattering during use.

Hereinafter, the present invention will be explained in detail with reference to Examples and Comparative Examples. Naturally, the invention is not limited thereby.

Examples 1-2. Comparative Examples 1-7. Cake eye color Spherical nylon powder, cosmetic powder and/or pigment, and liquid oil were blended in the composition and amounts shown in Table 11 to prepare cake eye color.

Next, the obtained cake eye color was evaluated according to the method shown below, and the results are shown in Table 1. The numbers for each component in Table 1 are parts by weight.

(Evaluation method) Powder flying when applying O: Evaluate powder that flies to areas other than the skin when applying.

○X: Not very good △Some stems ×: Fairly O Adhesion to the skin: Evaluate the state of the powder that adhered to the skin when applied.

○The powder is unevenly applied and almost no powder comes off even if you touch it with your hand.

△8 The powder is slightly unevenly applied, and when you touch it with your hand, some parts
A state of falling.

× Uneven thickness - There is powder on the surface, and if you touch it with your hand, it will fall off.

O Spreadability: Evaluate the resistance when applied to the skin.

○ There is a feeling of little resistance (can be applied.

Δg There is a feeling of resistance.

×: There is a feeling of relative resistance.

O Ease of blurring: - After applying to the skin, evaluate whether it can be applied thinner and wider.

○It is extremely thin and can be spread over a wide area.

△: Slightly uneven or cannot be applied over a very large area.

×: Can only be applied unevenly or cannot be applied over a wide area.

O Sticky feeling: Lightly place the palm of your hand on the application site and evaluate the sticky feeling.

○There is no sticky feeling.

△: Slightly sticky.

×It becomes sticky.

O Moldability: Compression molding is performed in a metal medium plate, and air incorporation, oil seepage, and powder compaction are evaluated.

○There is no air contamination, no oil seeping out, and the powder is sufficiently contained.

△: A small amount of air was mixed in, oil seeped out, and the powder was not tightly packed.

There is an amount of air mixed in, oil seeps out, and the powder is not tightly packed.

Impact resistance: The molded products were placed in a container and 10 pieces of each were dropped onto a co/crete floor from a height of 60 cm to evaluate the condition of cracks, cracks, and chips.

No cracks, cracks, or chips found in any of the osto pieces 0 △! Cracks, cracks, and chips are observed in less than 5 out of 10 pieces.

Out of 110 pieces, 6 or more have cracks, cracks, and chips.

As is clear from Table 1, cake eye color according to the present invention obtained by blending spherical nylon powder, cosmetic powder and/or pigment, and liquid oil in a certain proportion and ratio (Example 1 and 2) gave very good results in all evaluations of usability, feel, and product strength. On the other hand, cake eye colors using conventional inorganic powder or metal soap instead of spherical nylon powder (Comparative Examples 1 and 2) are inferior in usability (spreadability, ease of shading), and Even when the spherical nylon powder was replaced with similar resin powder (polyethylene, acrylic) (Comparative Examples 3 and 4), usability (powder flying) was improved.

Satisfactory results were not obtained in terms of adhesion) and strength (moldability, impact resistance). Furthermore, even when using spherical nylon powder, the blending range and ratio were exceeded (Comparative Examples 5 to 7)
As a result, it was shown that the usability, feel, and strength continued to deteriorate, making it impossible to obtain the desired solid powdered powder material of good quality.

Example 3 Cheek color (A) mica titanium 18.0 spherical nylon powder (10μ) 15.0 sericite
46.45 Benga 23゛0 Yellow iron oxide 2.0 Antioxidant 0.05 (B) Fragrance
Materials: 0.5 Squalane 8.0 Isopropyl myristate 7.0 (Method) Mix (A) with a Henschel mixer, take it out, grind it with a grinder, put it into the Henschel mixer, and add (B) to it. The mixture was mixed, pulverized again, and press-molded using a mold.

Example 4 Cake foundation (A) Talc 16.95 Sericite 20.0 Kaolin
5.0shi≦F iron powder (5μ) 20.0 titanium oxide
5.0 be/gala 1.
0 Yellow iron oxide 1.0 Black iron oxide
0.5 backing titanium
10.0 Antioxidant
0.05(B) Squalane 20
．． 0 fragrance 0
．． 5 (Method) The same procedure as in Example 3 was carried out.

Example 5 Kegi Eyebrow (A) Merck 20.0 Sericite 13.95 Koji Iron Powder (10μ) 8.0 Red Iron 10.0 Yellow Iron Oxide
3.0 mica titanium
10.0 Titanium oxide 5
．． 0 Antioxidant 0.05 (B
) Octyldodecyl myristate 15.0 Liquid paraffin 12.0 Solid paraffin
3.0 (Method) (A) Mix in a Henschel mixer, collect and crush in a pulverizer, put this into one Henschel mixer, dissolve in a colander in advance, cool to room temperature, (B) was mixed, crushed again, and press-molded in a mold.

Claims (1)

[Claims] 1) 5 to 20% by weight of spherical nylon powder, 45 to 85% by weight of cosmetic powder and/or pigment, and 1% by weight of liquid oil.
A solid powder cosmetic comprising 0 to 35% by weight, and characterized in that the blending ratio of spherical nylon powder and liquid oil is spherical nylon powder/liquid oil ≦1. 2) The average particle diameter of the spherical nylon powder is 2 to 20
The solid powder cosmetic according to claim 1), which is μ.