KR19990040645A - Solid powder cosmetic using liquid crystal system emulsion binder - Google Patents

Abstract

The present invention relates to an oil binder of a solid powder cosmetic, and according to the present invention, an oil binder of a conventional solid powder cosmetic is emulsified using dimethicone polysilonic acid, a moisturizing component, an ester oil, a nonionic surfactant and an emulsifier. After use, the cholesteryl derivative, which is a liquid crystal forming agent, is substituted and used as an emulsifying binder in the liquid crystal system, thereby increasing the binding strength between the pigments and improving the moisturizing power, thereby improving the absorption of the pigments during skin application of the cosmetics. Due to this, it is possible to suppress skin dryness and skin pulling, which is caused, and to provide a solid powder cosmetic having excellent stability.

Description

Solid powder cosmetic using liquid crystal system emulsion binder

The present invention relates to an oil binder of a solid powder cosmetic, and more specifically, dimethicone polysilonic acid using a dimethicone polysilonic acid, a moisturizing component, an ester oil, a nonionic surfactant and an emulsifier, After emulsifying the ester-based oil into an internal phase, using an emulsifying binder of a liquid crystal system formed by blending a cholesteryl derivative which is a liquid crystal forming agent, the binding power with the pigment is increased, and the moisturizing power is improved to apply the powder cosmetic to the skin. The present invention relates to a solid powder cosmetic having suppressed skin dryness and skin pulling.

Generally, solid powder cosmetics are composed of raw materials such as pigments, oil binders, preservatives, fragrances, and other additives, and since the pigments constitute 80 to 90% by weight or more of the total raw material content, the physical properties of the pigments are solid powders. Dominant effect on cosmetics. In particular, due to the strong absorption of the pigment in the solid powder cosmetics, after the application of the cosmetic to the skin over time, the skin becomes dry and pulling occurs.

Therefore, in order to solve such a problem, conventionally glycerin, as an oil binder to mix a certain amount of pigments modified with hyaluronic acid, chitin liquid, lecithin, amino acids, or the like to combine the pigments to maintain the powder in a solid form An emulsifying binder emulsified using a polyhydric alcohol moisturizer such as 1,3-butylene glycol, propylene glycol, polyethylene glycol, water and an emulsifier was used. However, the method of using the modified pigment is, for example, geometric influence, surface structure such as cracks, irregularities, surface adsorption reaction sites of the surface modification of the pigment, such as surface energy, surface composition, etc. is different for each particle and particle size As the size becomes smaller, the aggregation becomes more severe. Therefore, it is not possible to treat the modified pigment completely uniformly on the individual pigment particles, so that the skin pulling phenomenon cannot be greatly improved. In addition, since the modified pigment is powdery, it cannot fundamentally completely inhibit skin pulling. In addition, the method of using the emulsion binder as an oil binder, since the water phase evaporates with time as the emulsion binder, the surface of the solid powder cosmetics containing it cracks and causes a hardening phenomenon is disadvantageous in use, and also a hydrophilic moisturizer Since the oil phase coexists with the emulsion, the stability of the emulsifying binder is lowered, and the surface of the oil binder is strongly bonded to the hydrophilic pigment, resulting in a phenomenon of lowering the grinding performance. System oil or lanolin derivatives were used as the oil binder, but sufficient moisturizing effect could not be obtained.

Thus, the present inventors can impart a moisturizing effect to the skin to suppress skin pulling and skin drying phenomena appearing after applying the solid powder cosmetic to the skin, improve the binding force between the pigments, solid powder cosmetics having excellent stability As a result of extensive research, it was found that the above object can be achieved by using a liquid crystal system emulsion binder containing dimethicone polysiloxane, moisturizing component, ester oil and cholesteryl derivative as an oil binder. The present invention has been completed.

Therefore, an object of the present invention is to impart a moisturizing power to the skin to suppress the skin pulling and drying phenomenon generated during the application of the skin of the solid powder cosmetics, to improve the binding force between the pigments, solid powder cosmetics having excellent stability To provide.

In order to achieve the above object, the solid powder cosmetic of the present invention is characterized by using a liquid crystal system emulsion binder formed by mixing dimethicone polysilonic acid, a moisturizing component, an ester oil and a cholesteryl derivative which is a liquid crystal former as an oil binder. It is done.

The above and other objects, features and advantages of the present invention will become apparent to those skilled in the art from the following detailed description.

Hereinafter, the present invention will be described in more detail.

The present invention is a solid powder cosmetic comprising a pigment, an oil binder, a preservative, a fragrance and various additives, and is emulsified using dimethicone polysilonic acid, a moisturizing component, an ester oil, a nonionic surfactant and an emulsifier as an oil binder. Then, it relates to using a liquid crystal system emulsion binder formed by blending a cholesteryl derivative which is a liquid crystal former.

That is, the emulsifying binder of the liquid crystal system of the present invention can suppress the skin dryness and the skin pulling phenomenon appearing in the skin coating of the solid powder cosmetics, can improve the binding strength with the pigment, and can improve the emulsion stability It is an oil binder.

As oil binders in solid powder cosmetics, oils such as lanolin and its derivatives, mineral oil, isopropyl myristate and squalene have conventionally been used, but recently, pigments used in solid powder cosmetics have been treated with hydrophobic pigments. Silicone oil is used to increase the affinity and at the same time, it does not mix with sweat and sebum, so it can improve makeup's sustainability. However, since silicone-based oils are more dry than ester-based oils in their characteristics, when silicone-based oils are used as oil binders, cosmetics containing them by silicone-based oils and pigments become very dry.

Therefore, the solid powder cosmetic of the present invention uses a liquid crystal system emulsion binder formed by mixing a moisturizing component, an ester oil and a cholesteryl derivative, which is a liquid crystal former, in a silicone oil as an oil binder, which is based on the total weight of the solid powder cosmetic. It is preferable to contain in the amount of -15 weight%.

The type of moisturizing component of the emulsion binder of the liquid crystal system used as the oil binder in the solid powder cosmetic of the present invention is not particularly limited, but is selected from, for example, glycerin, 1,3-butylene glycol, propylene glycol, and polyethylene glycol. 1 or more types can be used.

In addition, the kind of ester oil of the liquid crystal system emulsion binder is not particularly limited, but for example, diisosteaylstearate, hexyllaurate, trioctyldodecyl citrate, tridodecyl isononanoate, iso One or more types selected from propyl myristate and sorbitan fatty acid ester can be used.

In addition, the cholesteryl derivative, which is a liquid crystal former, in the emulsion binder of the liquid crystal system used as the oil binder in the solid powder cosmetic of the present invention is used to effectively maintain the moist state of the emulsion binder, but the type thereof is not particularly limited. For example, one or more selected from cholesteryl nonanoate, cholesteryl alanate, cholestil palmitate, and cholesteryl stearate can be used. When the content of the liquid crystal former is less than 0.2% by weight based on the total weight of the emulsifier, it is difficult to form the liquid crystal. When the amount of the liquid crystal agent is used by more than 5.0% by weight, the viscosity increases, so that it is not suitable for spraying with the binder. It is preferably contained in an amount of 0.2 to 5.0% by weight relative to the total weight of the emulsion binder of the system.

Nonionic surfactants used in the emulsion binder of the present invention is used for the stability of the emulsified whole, the type is not particularly limited, but self-emulsifying glycerin monostearate, sorbitan monostearate, sorbitan sesquioleate, mono Stearic acid polyoxyethylene glycol and the like. The content of the nonionic surfactant is preferably blended in an amount of 0.5 to 5.0% by weight based on the total weight of the emulsion binder of the liquid crystal system.

Hereinafter, the configuration and effects of the present invention will be described in detail with reference to Examples and Comparative Examples. However, the present invention is not limited only to these examples.

Raw material number Raw material name Example 1 Example 2 Comparative Example 1 One Trioctyldodecyl citrate 20.0 20.0 - 2 1,3-butylene glycol 10.00 - - 3 Propylene glycol - 10.00 - 4 glycerin - - 10.00 5 Purified water - - To 100.0 6 Sorbitan sesquioleate 2.00 2.00 1.00 7 Cholesteryl Nonanoate 1.50 1.50 - 8 Dimethyl Polysiloxane To 100.0 To 100.0 - 9 Dimethicone Copolyol 2.50 2.50 - 10 Hexyllaurate 10.0 10.0 10.0 11 1,3-butylene glycol 10.0 - - 12 Propylene glycol - 10.0 -

[Manufacturing method]

<Examples 1 and 2>

1. The raw materials 1-7 were mixed and homomixed, heating to 60 degreeC temperature.

2. The raw materials 7-10 were heated and mixed at the temperature of 60 degreeC, 1. was slowly added, and homomixed for 3 minutes.

3. The raw materials 11-12 were heated to 60 degreeC temperature, and then homomixed for 3 minutes, slowly adding to 2., and cooling by stirring at 30 degreeC temperature.

<Comparative Example 1>

1. The raw material 4 was added to the raw material 5, and it heated to 60 degreeC temperature.

2. The raw materials 6 and 10 were mixed and heated to the temperature of 60 degreeC.

3. Slowly adding 1. while stirring 2. and then cooling.

Raw material number Raw material name Example 3 Example 4 Comparative Example 2 Comparative Example 3 One Dimethicone Treated Talc To 100.0 To 100.0 To 100.0 To 100.0 2 Dimethicone Treatment Sericite 12.0 12.0 12.0 12.0 3 Damethicone treated mica 10.0 10.0 10.0 10.0 4 Nylon Powder 7.50 7.50 7.60 7.50 5 Ethicone treated titanium dioxide 18.0 18.0 18.0 18.0 6 Methiconated Iron Oxide handful handful handful handful 7 Chitin Liquid Treated Sericite - - 20.0 - 8 Hard calcium carbonate 4.00 4.00 4.00 4.00 9 Liquid Crystalline System Emulsifying Binder 1 (Example 1) 9.50 - - - 10 Liquid Crystal System Emulsifying Binder 2 (Example 2) - 9.50 - - 11 Emulsified binder obtained by emulsifying oil binder with water (Comparative Example 1) - - 9.50 12 Dimethicone - - 6.60 - 13 Squalene 0.30 0.30 1.80 0.30 14 lanolin - - 0.60 - 15 Hexyllaurate - - 1.00 - 16 Paraoxybenzoic Acid Ester handful handful handful handful 17 Spices handful handful handful handful

[Manufacturing method]

1. The mixture obtained by mixing the raw materials 1 to 8 with a ribbon mixer was ground twice with a hemmer mill.

2. The raw materials 9-11 were sprayed, mixing 1. with the ribbon mixer.

3. The raw materials 12-17 were mixed, heated and dissolved, and then sprayed on the above 2.

4. After grinding 3. once, it was left at room temperature for 24 hours.

5. The above 4. was molded in an aluminum dish under 25 kgf / cm 2 pressure.

<Test Example>

Hereinafter, in order to compare and evaluate the effects of the solid powder cosmetics of the present invention prepared according to Examples 3 to 4 and Comparative Examples 2 to 3, 30 female consumers of 25 to 40 years of age, each of the test examples The results obtained by comparing and evaluating four items of moisturizing force (hardness suppression), hardness, drop failure rate, and thermal stability after 7 days, that is, 28 days of use were described in Table 3. As follows.

(1) Moisturizing power (skin suppression): The evaluation stage is divided into five stages, and each solid powder cosmetic is evaluated.

Evaluation stage 5 points: No skin pulling phenomenon. Very good moisturizing.

4 points: no skin pulling phenomenon. Slightly moist.

3 points: I'm not sure. Normal.

2 points | pieces: skin pulling phenomenon but not severe.

1 point: skin pulling very severe. Very dry.

(2) Hardness: The hardness of 5 points of the surface of the solid powder cosmetics molded using a JIS hardness tester is measured.

(3) Dropping failure rate: 10 solid powder cosmetics molded in an aluminum dish are placed in a suitable container, and dropped at a height of 1m, and then the breakage rate is measured.

(4) Thermal stability: The appearance of the solid powder cosmetics of each Example and Comparative Example was maintained for 30 days in a 45 ° C. thermostatic chamber, and the appearance was observed to evaluate abnormal phenomena such as surface cracking of the molded solid powder cosmetics.

Example 3 Example 4 Comparative Example 2 Comparative Example 3 Moisturizing 4.7 4.5 2.8 3.7 Hardness 35 to 42 35 to 44 30-40 60 to 75 Drop Failure Rate 0% 0% 0% 0% Thermal stability (45 ℃ thermostatic bath) stability stability stability offshoot

As can be seen from the results of Table 3, the solid powder cosmetics (Examples 3 to 4) using the liquid crystal system emulsifying binder of the present invention as an oil binder are emulsified with a conventional moisturizing pigment (Comparative Example 3) and an oil binder. Compared with the used solid powder cosmetics (Comparative Example 2), the effect of giving moisturizing power after application of the skin was much better, and the skin pulling phenomenon was remarkably improved. Moreover, compared with the comparative example 2, since the hardness and fall damage rate were not bad, it is judged that the bonding force between powders is also excellent. In particular, it was found that the thermal stability was also significantly superior to Comparative Example 3.

As described above, by using the oil binder of the conventional solid powder cosmetics by replacing the liquid crystal system emulsion binder, not only the binding strength between the pigments can be improved, but also the moisturizing power is improved, and the pigment is strongly applied when applying the skin of the cosmetic. It is possible to suppress the skin drying and pulling phenomenon caused by the absorbency, it is possible to provide a solid powder cosmetic having excellent stability because of the liquid crystal system.

Claims (5)

Dimethicone polysilonic acid, moisturizing ingredient, ester oil, nonionic surfactant and emulsifier are used to emulsify the dimethicone polysilic acid so that the external powder, moisturizing ingredient and ester oil are internal phase as oil binder of solid powder cosmetics. A solid powder cosmetic comprising a liquid crystal system emulsion binder comprising a cholesteryl derivative as a liquid crystal forming agent. The solid powder cosmetic of claim 1, wherein the moisturizing component of the liquid crystal system emulsion binder is one or more selected from the group consisting of glycerin, 1,3-butylene glycol, propylene glycol, and polyethylene glycol. The method of claim 1, wherein the ester oil of the liquid crystal system emulsion binder is diisosteayl stearate, hexyl laurate, trioctyl dodecyl citrate, tridodecyl isononanoate, isopropyl myristate, sorbitan fatty acid Solid powder cosmetics, characterized in that at least one selected from the group consisting of esters. According to claim 1, wherein the cholesteryl derivative of the liquid crystal system emulsion binder is emulsified with at least one selected from the group consisting of cholesteryl nonanoate, cholesteryl alanate, cholestyl palmitate, cholesteryl stearate Solid powder cosmetics, characterized in that contained in an amount of 0.2 to 5.0% by weight based on the total weight of the binder. The solid powder cosmetic of claim 1, wherein the liquid crystal system emulsion binder is contained in an amount of 3 to 15% by weight based on the total weight of the solid powder cosmetic.