JPS5993013A - Pressed powdery cosmetic - Google Patents

Abstract

PURPOSE:The titled cosmetic containing powder constituting the pressed powdery cosmetic constituted of a spherical powder having a specific particle diameter in combination with a fine particulate powder, having a constant and uniform pressed hardness and improved removability and adhesion in use without causing the cracking of the pressed surface. CONSTITUTION:A pressed powdery cosmetic obtained from 20-90wt% based on powder constituting the pressed powdery cosmetic spherical powder having 1- 40mu, preferably 5-20mu particle diameter, e.g. inorganic powder such as calcium silicate, organic powder such as regenerated cellulose or homopolymer or copolymer powder or nylon powder, and 5-30wt% fine particulate powder having <=0.1mu particle diameter, e.g. fine powder silica such as silicic acid anhydride or magnesium metasilicate aluminate. EFFECT:The spherical powder can be incorporated in a high proportion by the combination with the fine particles, and good pressability can be maintained. Usually used other components can be used in the same way as before.

Description

Detailed Description of the Invention The present invention provides a pressed cosmetic, more specifically a pressed powder cosmetic containing spherical powder, which has a constant and uniform press hardness and which prevents cracks on the pressed surface. In addition, when using it, there is no need to touch cosmetic tools such as puffs and brushes.
The purpose is to provide a pressed powder cosmetic with good adhesion.

Conventionally, when producing pressed powder cosmetics in stages, powder components including pigments and metal soaps are combined with oil components such as hydrocarbons and esters, and moisturizing agents such as polyhydric alcohols and sugar alcohols. The common method was to add drug ingredients, as well as fragrances and medicinal ingredients depending on the heart, mix these ingredients, crush them, and then press-fill them. In a normal type of pressed powder cosmetic, the composition ratio of the powder component is more than 901%, and even in a type with a high oil component called soft cake, the composition ratio of the powder component is 70 to 70%. It is no exaggeration to say that the characteristics of powder cosmetics are determined by the selection of powder components, their combination method, and composition. Conventionally, spherical powder has been used as one of the powder components in order to provide lightness and a good feel when applying powder cosmetics to the skin. However, when spherical powder is blended, the shape of the particles (spherical or shape similar to a rib) and flow characteristics are large, so as the blending force increases, the pressability deteriorates, especially when powder components are mixed. A mixed powder containing 2ON1% or more of spherical powder is pressed to produce a good dryness condition (constant and uniform press hardness, no cracking on the pressed surface, easy removal and adhesion to cosmetic tools). It has been said that it is difficult to enshrine.

In order to improve the above-mentioned drawbacks and improve pressability, methods such as applying glue to the inside of the inner plate or using wax or metal soap as a binder have been used, but the former In the above method, the reinforced part is limited to the contact point between the inner plate and the powder,
When the blended amount of spherical powder reaches 20 times or more of the powder component, the disadvantage is that the press (ILl!) degree decreases and the press hardness becomes uneven, leading to destruction of the press surface. Unfortunately, neither method was preferable.

Therefore, the present inventor solved the problems of such conventional technology,
While making the most of the sensory characteristics when blending spherical powder,
As a result of intensive research to improve the pressability of mixed powders, we found that when a fine particle powder with a specific particle size is used as one component of the mixed powder and is blended at a certain ratio, pressability improves. However, the present invention was completed based on the discovery that the sensory characteristics derived from the spherical powder can also be maintained.

The present invention provides a pressed cosmetic system (20~20~
90'm view% is spherical powder with a particle size of 1 to 40μ, and
The present invention relates to a pressed powder cosmetic having a good pressing condition and characterized by being a fine particle powder having a weight coefficient particle size of 0.1 μm or less.

The spherical powder noodles used in the present invention include powders commonly used in cosmetics, such as inorganic powders such as calcium silicate, magnesium silicate, and silica beads, and organic powders such as regenerated cellulose and crystalline cellulose. And, the above-mentioned inorganic powder, the lipophilic powder of the organic powder, ``1 fc ethylene, tulobyrene, vinyl acetate, sugelene, methacrylic ester (methyl ester, ethyl ester, etc.), acrylic ester (methyl ester, etc.) Examples include homopolymers or fuvolimer powders selected from one or two glazes (ethyl ester, etc.), nylon nose powder, polyvinylpyrrolidone powder, etc.

Moreover, the particle diameter of each of these spherical powders is 1 to 4.
It is 0μ, preferably 5 to 20μ.

If the particle size is smaller than 1μ, the sticky feeling characteristic of spherical powders will not be felt when the product is used, so there is no point in blending the product.
If υ is larger than 0 μ, conversely, a feeling of melancholy and harmony will appear on the skin, which is not desirable.

Next, the amount of spherical powder to be mixed is 2
The content is 20 to 90% by weight, preferably 60 to 80% by weight. If the amount of spherical powder is less than 20, it will not be possible to fully demonstrate the characteristics of the spherical powder, and if the amount exceeds 90, it will be difficult to create a well-balanced product in relation to other ingredients (fine powder, pigments, etc.). It becomes difficult to make.

The fine particles used in the present invention include fine powders such as anhydrous silicic acid, hydrated silicic acid, etc., yagnesium metasilicate aluminate, calcium silicate, magnesium silicate, calcium carbonate, magnesium carbonate, montmolinite, and kaolinite. Knight, Merck, titanium oxide, and their lipophilized powders are included, but among these, To, which is porous and has a small apparent specific gravity (bulky), can be said to be effective due to the relationship with the amount blended. .

In addition, the particle diameter of these fine particle powders is usually 0.001~
A value of 0.1μ is applied. If a particle size larger than 0.01 μm is used, the porosity during pressing will increase, resulting in poor pressing conditions, and should be avoided.

The blending amount of such fine particle powder is 5 to 30% by weight, preferably 10 to 20% by weight. If the amount is less than 5%, no improvement in pressability can be expected, and if the amount exceeds 30%, the tactile surface during use will be affected due to the inherently high oil absorption property of fine particle powder. Then, the feeling of dryness, dryness, and dryness becomes stronger, which is not suitable.

As mentioned above, the feature of the present invention is that in combination with fine particle powder, it is possible to mix spherical powder at a high ratio of 20 to 90% by weight, and even at that time, good pressability ( It is said to be able to maintain its hardness, impact resistance, removability and adhesion to cosmetic tools. Furthermore, it is no exaggeration to say that other commonly used ingredients (powders, pigments, oil ingredients, moisturizers, etc.) can be used as usual.

Next, the features of the product of the present invention are shown by the evaluation results in the model mixed powder system (Tables 1 and 2) and the evaluation results in Examples 1 to 5 (Table 3) described below. Table 2 shows the variations of each glaze, mainly due to the presence or absence of spherical powder and fine particle powder, and the difference in type S. This figure shows changes in various properties when changing the blending ratio of.

Note that the press conditions and evaluation of various properties in Tables 1 to 3 were performed based on the same standards.

[Press conditions, instrumentation method and judgment]

0 Pressing Conditions Mixed powder 2,52 is pressed in a mold into a stainless steel medium plate with 38 cocoons in length, 29 cocoons in width, and 4 shells. Press pressure 25 Bleaching 42, Press time 5 seconds O Pressability ×: Impossible to press or cracks on press surface △ Nibbling possible, but hardness is uneven or low ○: Good press condition o Average hardness tJ11sH Engineering MA hardness meter loading button For one bond, hardness was measured at 6 locations on the press surface and the average was calculated. Usually, the preferable range is from 1o to 30th position.

○Drop test Pressed product'e From a height of 30 cm,
It fell onto a horizontal metal fly board.

×: Breaks 1 after 1 time △ Breaks after 2 times ○: No change after 6 times 0 removal into the puff X: Too hard and the powder does not stick to the puff △:
Powder sticks to the puff, but I don't know much about it. ○ Powder is suitable for puffs. Explanation A in Table 1 is a yarn that does not use spherical powder, and is similar to conventional general pressed powder.

B is a yarn that does not contain fine powder, and cannot be pressed even if it contains 20% spherical powder (approximately 22% of the total powder component).

C, D, and K are mixed powders corresponding to the pressed powder cosmetic according to the present invention, and a good pressed state can be obtained.

Table 6 As is clear from Tables 1 to 3, the product of the present invention, which is a combination of spherical powder and fine particle powder, has a constant and uniform press hardness while taking advantage of the characteristics of spherical powder, and can be pressed easily. It is excellent in that it does not have cracks on the surface and has good removability and adhesion to cosmetic tools during use.

Next, examples according to the present invention will be shown. The blending ratio is expressed in weight%.

Example 1 Body powder A was mixed at high speed for 5 minutes using a Henner mixer, and then pulverized and mixed using a pulverizer. Next, add B and mix at high speed for 2 minutes using a Henschel mixer, then add C and mix at low speed for 5 minutes, then pass through a blower shifter and press.

Example 2 Pressed powder (Fragrance 06 Ak Behenschel mixer for 5 minutes at IWI high speed rotation and then pulverized and mixed using a pulverizer. Next, B was added and mixed at high speed for 2 minutes using a Hennel mixer and then pulverized. Grind, take out and press.

Example 6 Cake Autumn Foundation A was mixed for 5 minutes at high speed using a cylinder mixer, and then pulverized and mixed using a pulverizer. Next, add B and mix at high speed for 2 minutes in a Henschel mixer, then add C at 65°C, mix at low speed for 5 minutes, and cool in a cabinet at room temperature. Next, after pulverizing with a pulverizer, it is taken out and pressed.

Example 4 Eye Color C (Inpropyl Myristate 8.
After mixing the OA in a Henschel mixer at high speed for 5 minutes,
Grind and mix using a grinder. Next, add B and mix at high speed for 2 minutes using a Henschel mixer, then add C and mix at low speed for 5 minutes. Then, after pulverizing with a pulverizer, it is taken out and pressed.

Example 5 After mixing cheek color A in a Henschel mixer for 5 minutes at ρ1 speed,
Grind and mix using a grinder. Next, add B and mix at high speed for 2 minutes using a Henschel mixer, then add Ci and mix at low speed for 5 minutes. Then, after pulverizing it with a pulverizer, it is taken out and pressed.

Patent applicant: POLA CHEMICAL INDUSTRIES, INC. - Hammer

Claims (1)

[Scope of Claims] 1) 20 to 90 percent of the powder constituting the pressed cosmetic is spherical powder with a particle size of 1 to 40 μ, and 5 to 3
2) Pressed powder cosmetic, characterized in that 0% by weight is fine particle powder with a particle size of 01 μm or less; 2) Pressed powder cosmetic according to claim 1, which is a make-up cosmetic;