KR101502026B1 - Cosmetic composition for oil-free pressed or solid powder - Google Patents

Abstract

The present invention relates to an oil-free compressed or solid powder cosmetic composition, and more particularly, to a cosmetic composition which does not use an oil binder at all, but which uses a particulate polymer powder having high cohesiveness to increase compression density to secure compression stability and moldability, Free compressed or solid powder cosmetic composition prepared so as to be lightly applied to the skin without the use of the oil.

Oil-free pressed powder, oil-free, fine polymer powder

Description

[0001] The present invention relates to an oil-free compressed or solid powder cosmetic composition,

The present invention relates to an oil-free compressed or solid powder cosmetic composition, and more particularly, to a cosmetic composition which does not use an oil binder at all, but which uses a particulate polymer powder having high cohesiveness to increase compression density to secure compression stability and moldability, Free compressed or solid powder cosmetic composition prepared so as to be lightly applied to the skin without the use of the oil.

Compressed powder forms the make-up cosmetics product line in the market, such as powder facts and twin facts. Unlike powdered powder, pressed powder requires stability in the molded state. That is, it is designed to withstand a certain physical shock or more in a compressed state since there is no cracking due to an external impact. In addition, unlike powdered powder, it must be a constant amount of makeup tool, generally taken to the puff, and it should be a suitable amount for application, and is designed to be free from dusting powder when puffed with puff. A general compressed powder composition designed in this way is mixed at a ratio of 90 to 95 wt% of cosmetic powder and 5 to 10 wt% of oil. Oils are mainly used to help formability during powder compression, to prevent breakage against external impacts, and to prevent dusting when taken as a makeup tool. That is, the oil binder serves to enhance the cohesiveness of the powder. In addition, the use of an oil binder can reduce the dusting of the powder, although it gives a heavy feeling when applied. On the other hand, since the powdered powder does not require formability, the content of the oil binder is generally less than 5%. Therefore, it has the advantage of giving a feeling of light coating although it is dusty compared with compressed powder in use.

In general, the compression moldability varies depending on the kind of powder, and also depending on the type and size of the powder coating. The talc has a plate-like, non-elasticity characteristic and exhibits properties capable of forming almost any kind of talc. That is, the talc that can not be formed is merely 10 m or more. A factor of poor moldability of the talc having a size of 10 탆 or more is due to the size of the powder. The larger the size of the powder, the lower the denseness and the poor formability. Therefore, the talc having a size of 10 탆 or more is transparent and is suitable for use as a raw material for a powder, but the compacted powder is poor in moldability and is limited in use.

In the case of mycaine cericite, splitting is strong in the form of a plate, and potassium ion gives elasticity between the plates. Therefore, when molding is carried out, powdery spattering occurs, dropping stability is weak or moldability is not obtained. On the other hand, It has good cohesiveness and high bonding strength, which shows good moldability by itself.

On the other hand, in the case of spherical nylon powder, PMMA powder and silica, compression molding is impossible.

In addition, a technique for coating the surface of the powder to improve the agglomeration of the powder for cosmetics has been developed. More specifically, the coating material having an alkyl chain is viscous and induces agglomeration between powders to improve moldability. Silicone type has no cohesion with other materials but has cohesion between silicon and cohesive force between silicon coating materials, but it is weak compared with cohesion of alkyl chain.

As for the difference according to the powder size, the size of the powder generally used is about 5 to 15 mu m, and as the size is larger, the compression density is lowered, the powder is loosened, and the formability is lowered.

As to the size, type and properties of a common powder, when the cosmetic composition is formulated after the compounding, it is stable after molding and does not meet the criteria of fact without dusting. In other words, a composition in which a composite mixture of talc, mica, cericite, titanium dioxide, boron nitride, barium sulfate, nylon, PMMA and silica is mixed is large in size because of its compressive stability and elasticity of the powder itself hinders compression, The mixing of the plate phases lowers the density and hinders the molding, resulting in poor moldability and flaking.

In order to overcome the problem of the compressed powder, a solid powder using polyethylene powder has been researched but the compression molding property through particle size control has not been realized.

In addition, although oil and talc-free compositions are disclosed in U.S. Patent No. 5,030,446, there is no known technology for producing oil-free pressed powders without oil binders.

Thus, the present inventors have found that by using a particulate polymer powder having high cohesiveness without using an oil binder at all, the present inventors have succeeded in producing an oil-free compressed or solid powder which is compressed lightly on the skin without compromising compression stability and moldability by increasing the compression density And completed the present invention.

Accordingly, an object of the present invention is to provide an oil-free compressed or solid powder cosmetic composition which is lightly applied to the skin without aggregation.

To achieve the above object, the present invention provides an oil-free compressed or solid powder cosmetic composition comprising an oil-free powder for cosmetic use.

The compressed or solid powder cosmetic composition according to the present invention is excellent in compression stability and moldability by using a fine particulate polymer powder having high cohesion without using an oil binder at all and is lightly coated on the skin without aggregation.

The oil-free compression or solid powder cosmetic composition according to the present invention does not use any liquid, semi-solid or solid-phase oil at all, but also does not use a stearate-based powder binder and increases the compression density due to the size difference of the powder It is characterized in that it is produced by using a powder having high coagulation property. Therefore, the oil-free compressed or solid powder cosmetic composition according to the present invention is suitable for expressing light makeup with a feeling different from that of conventional compressed powder, and is capable of expressing such feeling without dusting, Suitable for skin.

Therefore, the cosmetic composition according to the present invention may be composed of a powder for 100% cosmetic composition, except for the preservative and fragrance. The powder for cosmetic powder used in the present invention may be selected from talc, mica, sericite, titanium dioxide, boron nitride powder, barium sulfate powder, nylon powder, PMMA (polymethyl methacrylate) powder, Or a mixture of two or more of them may be used, but the present invention is not limited thereto. The cosmetic composition according to the present invention comprises at least one selected from the group consisting of talc, mica, sericite, titanium dioxide, boron nitride powder, and barium sulfate powder among the above-mentioned cosmetic powder, By weight based on 100% by weight of the composition. In addition, the cosmetic composition according to the present invention may contain at least one selected from the group consisting of nylon, PMMA, and silica powder having a spherical shape and hindering moldability, optionally selected from 1 to 10 wt% You may.

The cosmetic composition according to the present invention is also useful for enhancing the moldability of a cosmetic composition composed of a powder for cosmetics without using an oil binder. In order to increase the compression density of the cosmetic powder, Contains polymer powder. The fine polymer powder has a size of 2 to 4 탆 which is 80% or less of a general cosmetic powder having an average particle size of 5 to 15 탆.

The cosmetic composition according to the present invention is prepared by mixing a cosmetic powder having a relatively large particle size and the fine polymer powder and compression-molding the mixture, thereby compacting a fine particulate polymer powder between the powder for cosmetic powder to increase the compression density of the powder, Stability. For this purpose, the fine particle polymer powder having an average particle size of 2 to 4 mu m, preferably 3 mu m, having high cohesiveness is used in the present invention.

In order to make the fine polymer powder used in the present invention have a desired particle size, it is ground by a jet grinding method (equipment name: air zet-mill), and then the surface of the fine polymer powder is ground with corn gluten protein to prevent re- By conventional methods known to those skilled in the art. The particulate polymer powder used in the present invention is preferably parinitic hydrocarbons surface-treated with corn gluten protein and represented by the formula C _n H _{2n + 2} (n = 52 to 56) By weight based on the total weight of the composition. When the content of the fine polymer powder used in the present invention is out of the above range, the feeling of use is inferior due to the rough contact feeling regardless of the kind of the other composition, the powder is reduced in amount and the surface caking occurs, Of the basic properties of the.

The jet grinding method can pulverize pigments by passing ultra high pressure air (air pressure 6kg / ㎠), and it is possible to adjust the size of particles by 70 to 80% or more, thereby improving the productivity. Since the powder thus treated is hydrophobic and can be re-agglomerated, the particle size is uniformly adjusted finally by coating treatment.

Hereinafter, the present invention will be described in more detail with reference to Examples and Experimental Examples. However, the present invention is not limited thereto, and variations, substitutions, and insertions conventionally known in the art can be carried out. And are included in the scope of the present invention.

[Reference Example 1] Preparation of fine polymer powder coated with corn gluten protein

1) A fine polymer powder having an average particle size of 3 μm (manufactured by Presperse Inc.) was added to an ethanol-injected four-necked flask in an amount of 30% by weight, followed by heating at 60 ° C and stirring at a speed of 200 rpm.

2) 0.06% by weight of corn gluten protein was added to 1), followed by reaction at 80 ° C.

3) After completion of the reaction, the mixture was washed with water at the same temperature for 24 hours, dried under hot air at 80 ° C or lower for 24 hours, and pulverized to obtain a fine polymer powder having a surface coated with corn gluten protein.

[Test Example 1] Investigation of the formability of the powder itself

The moldability of the powder for cosmetic itself shown in the following Table 1 was examined in advance in order to examine the moldability in the production of the compressed powder, and the content of the fine polymer powder (Reference Example 1) necessary for moldability was also examined, The results are shown in Table 1.

Powder Type for Cosmetic Powder Formability at 100% of powder The content (wt%) of the fine polymer powder required for formulation stability Talc O X Talc at about 10 ㎛ X 3 Mica X 20 Seri Site X 20 Titanium dioxide O X Boron nitride powder X 10 Barium sulfate powder X 15-18 Nylon Powder X - PMMA powder X - Silica X -

From the results shown in Table 1, it was confirmed that the powder, except for talc and titanium dioxide, was not able to secure molding stability by itself.

The granular polymer powder content required for formulation stability can be estimated to be a rough value because there may be a variation in the content when the powder is subdivided. Also, in the case of nylon powder, PMMA powder and silica which are spherical powder, the content of fine polymer powder for moldability was too high to grasp the content.

[Examples 1 to 2 and Comparative Examples 1 to 2]

Based on the results of Test Example 1, powder cosmetic compositions of Examples 1 and 2 and Comparative Examples 1 and 2 were prepared in a conventional manner according to the composition shown in Table 2 below (unit: wt%).

No. Ingredients Example 1 Example 2 Comparative Example 1 Comparative Example 2 One Talc 70.68 - 68.68 - 2 Talc (10 탆 or more) - 61.22 - 61.22 3 Seri Site 20.00 15.00 20.00 15.00 4 Boron nitride powder - 8.00 - 8.00 5 Barium sulfate powder - 5.00 - 5.00 6 Nylon Powder - 3.00 - 3.00 7 Silica 4.00 - 4.00 - 8 The fine polymer powder of Reference Example 1 5.00 7.00 - - 9 Phenyl trimethicone and hexyl laurate - - 7.00 7.00 10 Pigment 0.32 0.78 0.32 0.78 Sum 100.00 100.00 100.00 100.00

<Manufacturing method: Examples 1 and 2>

The contents were mixed at high speed for 4 minutes in a Henschel mixer.

<Manufacturing method: Comparative Examples 1 and 2>

1) The contents except the oil binder were mixed at high speed for 4 minutes in a Henschel mixer.

2) The oil binder was heated (80 DEG C) to mix the binder, and the mixture was mixed at a low speed while spraying the mixture.

3) After binder spraying, the mixture was mixed again at high speed for 4 minutes.

The content of the fine polymer powder used is not determined by talc or titanium dioxide, but is determined depending on the content and type of the other materials such as talc having a size of 10 탆 or more. In the case of spherical powders, there is a tendency to be used for the purpose of improving the spreadability. The spreadability should be adjusted by adding or subtracting spherical and fine powder contents. In the case of oil-free pressed powder, the fine polymer powder is an element that suppresses the fluidity of the powder. However, since the strength of the oil-free pressed powder is weaker than that of the oil binder, the ratio of the spherical powder is relatively . In addition, silica is prescribed as a function to absorb sebum in addition to the purpose of spreading. The oil-free compressed powder has a higher sebum-absorbing function than the general compressed powder because there is no oil contained in the powder, so that a relatively small amount of the prescription can be effective. Therefore, considering that the content of silica powder does not exceed 15% at maximum in general compressed powder, and it is difficult to exceed 15% due to hindering the molding stability, it is preferable to use less amount in the oil-free compression powder, The content of the fine polymer powder can be adjusted and held. In addition, since the pigment is used in a trace amount, it does not affect the moldability.

In the case of Example 2, talc having a size of 10 占 퐉 or more is a raw material rarely used because it has poor coverability against talc having a small size and is poor in moldability in a raw material preferred in powdered powder or general compressed powder. More specifically, as the content of the oil binder is increased, there are non-conforming factors such as oil unevenness upon mixing with the powder and oil stain during molding. In other words, the transparent and thin covering power of powder powder which is difficult to implement in general compressed powder can be realized in oil-free. It is also appropriate to use this to designate the oil-free product as a solid powder.

[Test Example 2]

In order to examine the molding stability of the powder cosmetic compositions prepared in Examples 1 and 2 and Comparative Examples 1 and 2, the powder cosmetic composition prepared in Examples 1 to 2 and Comparative Examples 1 and 2 was immersed in a case, And the stability was evaluated after dropping from the height of 50 cm from the side of the rear side. The results are shown in Table 3 below. In addition, five panelists from the early 20s to the mid-40s were allowed to use for one month, and the sensory evaluation of the degree of powderiness was carried out. The results are shown in Table 3 below.

fall Dusting Example 1 ◎ ○ Example 2 ◎ ○ Comparative Example 1 ○ ○ Comparative Example 2 △ X

([Judgment Criteria]?: Very good?: Good?: Normal X: poor)

From the results in Table 3, it can be seen from Examples 1 and 2 that the oil-free pressed powder similar to that of the general compressed powder has the same dropping stability. On the other hand, in Comparative Examples 1 and 2 in which the powder powder formulation is applied, it can be confirmed that the molding stability of the general compressed powder is unstable.

As a result of the sensory evaluation on the powder dusting, it was confirmed that both of Examples 1 and 2 showed almost no powder dusting, whereas in Comparative Example 2, the molding stability was poor and powder dusting was also severe.

[Test Example 3]

The powder cosmetic compositions prepared in Examples 1 and 2 and Comparative Examples 1 and 2 were tested on 9 panelists from the early 20's to the mid-40's by the characteristics of the oil binders, , Sebum absorption, adhesion, persistence and weight of application (light feeling) were evaluated. The results are shown in Table 4 below.

Spreadability Sebum absorption Adhesion Persistence Application weight (light feeling) Example 1 ◎ ◎ ○ ◎ ○ Example 2 ◎ ○ ○ ○ ◎ Comparative Example 1 △ ○ ◎ ◎ △ Comparative Example 2 △ △ ◎ ○ △

([Judgment Criteria]?: Very good?: Good?: Normal X: poor)

From the results of Table 4, the spreadability of the general compressed powders of Comparative Examples 1 and 2 shows poor characteristics when the same amount of spherical powder is added due to the cohesiveness of oil, and relatively oil-free properties show good characteristics, The content of spherical powder can be adjusted to increase. On the other hand, the oil-free pressed powder of Examples 1 and 2 according to the present invention is highly suitable for oily skin because of its relatively excellent sebum absorption power, and should be prescribed in consideration of dryness. Compression powders of Comparative Examples 1 and 2 using oil binders are superior in terms of adhesion due to viscosity of oil and the like. From the overall sensory evaluation results such as spreadability and sebum absorption as well as persistence and application weight (light feeling) It was confirmed that the oil-free powders of Examples 1 and 2 were superior to those of Comparative Examples 1 and 2.

Therefore, the oil-free compressed or solid powder cosmetic composition according to the present invention is excellent in the sebum absorption function, and is characterized by giving a relatively light and uncomfortable feeling of use.

Claims (5)

An oil-free pressed powder or oil-free solid powder cosmetic composition comprising an oil binder-free powder for cosmetic use and a fine polymer powder of 2 to 4 m, Free compressed powder or oil-free solid powder cosmetic composition characterized in that the fine polymer powder is a refrain agglomeration-treated paraffinic hydrocarbon represented by the formula C _n H _{2n + 2} (n = 52 to 56). The oil-free pressed powder or oil-free solid powder cosmetic composition according to claim 1, wherein the cosmetic powder is at least one selected from the group consisting of talc, sericite, boron nitride powder, and barium sulfate powder. 3. The cosmetic composition according to claim 1 or 2, wherein the cosmetic composition further contains at least one selected from the group consisting of nylon powder, PMMA powder and silica as a cosmetic powder, Free solid powder cosmetic composition. 2. The oil-free pressed powder or oil-free solid powder cosmetic composition according to claim 1, wherein the anti-aggregation treatment is coating the surface of the fine polymer powder with corn gluten protein. The oil-free pressed powder or oil-free solid powder cosmetic composition according to claim 1, wherein the fine polymer powder is contained in an amount of 1 to 20% by weight based on the total weight of the cosmetic composition.