KR0180851B1 - Water in oil type emulsifying stick cosmetic composition containing electrolyte - Google Patents

Abstract

The present invention relates to a water-in-oil type (W / O type: water in oil type) cosmetic composition in which water is dispersed in oil, and more particularly, to a water-in-oil type emulsion plastic cosmetic composition in which an electrolyte is added to dramatically increase water content. will be.

Water-in-oil emulsion stick cosmetic composition comprising an electrolyte according to the present invention is 0.01 to 25.0% by weight aqueous component, 0.01 to 10.0% by weight surfactant, 0.1 to 5.0% by weight electrolyte, 0.1 to 10.0% by weight polyhydric alcohol, pigment 01. 10.0% by weight, 0.01 to 1.0% by weight of preservatives and oily components as residual amount.

The present invention is capable of sufficiently delivering a large amount of water (water), especially an aqueous component stabilized with an electrolyte, to the skin, and by using a sufficient amount of a silicone derivative, an effect of increasing the soft feeling of use is provided.

Description

Water-in-oil emulsified stick cosmetic composition containing an electrolyte

The present invention relates to a cosmetic composition of water / oil type (W / O type) in which water is dispersed in oil, and in particular, an oil-in-oil type emulsion stick makeup comprising an electrolyte added to stabilize water having a dramatically increased content. It relates to a composition.

General stick cosmetics can be classified into oil-based stick cosmetics and oil-in-water emulsion cosmetics. Existing oil-based stick cosmetics, which consist mainly of waxes and cosmetic oils, have stable advantages such as changes over time and microbial contamination. It is inferior in application and adhesion to the skin and feels heterogeneity due to oiliness, and when the pigment is contained, the pigment is pushed out of the color, making the color unnatural, and above all, the moisturizing effect on the skin is inferior. In addition, conventional water-in-oil emulsion stick cosmetics are mixed with a gel made of a polyhydric alcohol or carbohydrates such as glycerin, mannitol, fructose, starch, and the like with a base mainly composed of an oil-based component consisting of wax and oil, and added water To prepare (Japanese Patent Application No. 48-104742), and to prepare sorbitanate and diglycerol oleate with oily components or pigment mixtures thereof by adding aqueous solution of maltitol (Japanese Patent Application Laid-Open Nos. 53-127841 and 54- 49337) is known. These oil-in-water type emulsion cosmetics have excellent application and adhesion to the skin when they are used compared to general oil-based cosmetics, and the intimacy with the skin is improved due to the inclusion of moisturizing ingredients and water, so that the feeling of burden or heterogeneity is not felt and the feeling of intimacy with the pigment is improved. There is an advantage that the pigment is not pushed, the color expression is natural. However, these cosmetics are mixed with polyhydric alcohols or carbohydrates in the prescription for the purpose of improving the safety, water retention, cutting strength and usability of the product. No good results were obtained. In addition, the surfactant used in the emulsification of these cosmetics should be a liquid at room temperature, it is difficult to form a gel when using a solid surfactant, and the stability after emulsification is also extremely unstable, there was also a difficulty in selecting a surfactant.

In addition, a stick or cake-like cosmetics, which are generally composed of wax and oil, are heated to 70 to 80 ° C., which is a temperature at which waxes can be dissolved, in order to mold them into a desired shape. It is formed by solidifying by pouring it into the product after cooling to room temperature or lower, and the composition before molding is stored in a state where the composition in the molding machine is completely solidified, molded, and released, and then melted and molded again. All of them are molded and commercialized. Therefore, the composition of these stick-like or cake-like cosmetics should have a property that should be stable even if left to stand for a long time in the process of heat dissolution and cooling coagulation or in a heat dissolved state.

However, in the conventional water-in-oil emulsion stick cosmetics, when the composition is subjected to heat dissolution and cooling coagulation or left for a long time in a heat-dissolved state, the emulsion particles become larger and larger, and the water phase and the oil phase are separated and stirred again. Since the high temperature stability in the dissolved state that is not recovered even if the disadvantages are extremely poor there was a problem that is difficult to actually commercialize.

Korean Patent Publication No. 1902 Publication No. 90-4085 (June 15, 1990) describes a composition of water-in-oil emulsified stick cosmetics, which is an oil-based ingredient that contains waxes and cosmetic oils as main ingredients. Cake cosmetics, such as lipsticks, lip gloss, eye care sticks, stick foundations, cake type foundations, eye shadow sticks and eye pencils, mixtures of oily ingredients suitable for their respective purposes and properties of the site. The composition of the water-in-oil type emulsion cosmetics containing oil-soluble polymers, a pigment as necessary, and then emulsified by adding water or water in which a water-soluble component is dissolved is described. However, it is a copolymer of ethyl cellulose or polyvinylpyrrolidone and higher alkanes having 14 to 22 carbon atoms as oil-soluble polymers. There was a disadvantage in that there could be a possibility that the back appeared to give a feeling of pulling the skin, and the water contained 5 to 10% by weight in the total composition, although more water may be contained, but the moisture content was Even if there was a problem that the stability of the contained moisture can be reduced.

In addition, Korean Patent Application Publication No. 2100 No. 90-8309 (announced on November 12, 1990) describes a water-in-oil emulsified cake foundation cosmetic composition and a method for preparing the same, which include non-polar oils, lead, emulsifiers, and humectants. , Having a composition containing pigment and water, but may have a problem in strength to form a stick, as well as the content of water itself is 1 to 10% by weight, the rest is glycerin, triethanolamine or sorbitol, mannitol, etc. As it is supplemented with an aqueous phase, there was a disadvantage that it does not increase the water content, and increasing the water content may also cause problems in stability over time, such as stability of the water may be a problem.

In particular, in case of stick type cosmetics such as lipstick, lip gloss or stick foundation, the strength of the stick itself must be maintained while increasing the moisture content, and high or low temperature stability is particularly required. The low temperature safety and the low temperature safety are particularly important factors in the stability of the product during the storage and distribution of the product, but the products of these prior arts are particularly unstable at low temperatures, which may increase the possibility of problems in the change over time.

Accordingly, the present invention is an oil-based wax and cosmetics mainly stick oil is cake-like cosmetics, such as lipstick, eye care sticks, stick foundation, cake-type foundation, eye shadow stick, eye pencils each of these Water E with electrolyte is dissolved in water E with electrolyte after adding appropriate pigment (including pigments) and oil-soluble polymer to the mixture of oily ingredients suitable for the purpose of use and the characteristics of the site. The present invention provides an oil-in-water emulsion-type cosmetic composition emulsified by adding a water phase or emulsifying a water-in-oil type hagel premixed with an oil-based mixture.

Hereinafter, the configuration of the present invention will be described in detail with reference to specific embodiments.

Water-in-oil type emulsion plastic cosmetic composition comprising an electrolyte according to the present invention is 0.01 to 25.0% by weight of the aqueous component, 0.01 to 10.0% by weight of the surfactant, 0.1 to 5.0% by weight of the electrolyte, 0.1 to 10.0% by weight of polyhydric alcohol, pigments (including pigments) ) 0.1 to 10.0% by weight, preservative 0.01 to 1.0% by weight and the remaining oil component as a balance.

Characteristic of the cosmetic composition in the present invention is to increase the moisture content, that is, the content ratio of the aqueous component, especially by adding a small amount of electrolyte to the composition to dramatically increase the water content and at the same time, even in the form of a stick stability, especially low temperature stability This is a significant increase in.

The oil component is a microcrystalline wax, carnauba lead, beeswax, candelilla lead, ozokerite, lanolin, glyceryl trioctanoate, tri (capryl,) as a main component of the cosmetic composition. One or two or more mixtures selected from the group consisting of known cosmetic oil-based raw materials such as capric acid) glycerin, diisostearyl maleate, methyl polysiloxane, tocopherol acetate and paraffins can be used. The oily component serves as a base including the components of the composition described below, and particularly emulent which softens the skin by forming a thin oily film on the skin so that a pigment or the like can be properly applied to the skin ( emollient), and some of the functional oils can give the skin a variety of cosmetic effects.

In particular, in the case of Example 2, an excess of methyl polysiloxane, cyclomethicone, etc. may be used in addition to the aforementioned oily ingredients to increase the soft feel to the skin and, in some cases, the durability.

In the above, the aqueous component is also expressed as water, and can be understood as including purified water in which water-soluble substances such as purified water and water-soluble nutrients are dissolved, and are included in the cosmetic composition to moisturize the skin during makeup. It serves to supply. The higher the content of the aqueous component, the higher the affinity with the skin upon application of the composition to the skin, can give a refreshing feeling in use, and can have a good effect on moisturizing to the skin.

In addition, in the case of the conventional oil-based stick cosmetic composition is possible because of the excessive content of a number of water-soluble cosmetic nutrients that can not be used is enough to deliver the water-soluble nutrients beneficial to the skin.

In particular, the amino acids and salts thereof that may be included in the aqueous component include el-alanine, beta-alanine, el-arginine hydrochloride, el-aspartate sodium salt hydrate, el-gulutamate sodium salt baggage, glycine, el-histidine It may be one or two or more mixtures selected from the group consisting of hydrochloride hydrate, hydroxy L-proline, el-lysine hydrochloride, el-serine, and the like, which may be included in all three examples below In the case of Example 3 the use of amino acids and salts thereof may be further advantageous.

In the above, the surfactant is to maintain the dispersed state by uniformly dispersing the components of the other composition, including the aqueous component in the oil component, it is well known in the art industry as well as commercially available It is obvious that it can be easily purchased and used. Surfactants that can be used are HLB (hydrophilic lipophilic balance) of 2 to 7 of the surfactants at room temperature of the liquid as well as solid state can be used.

Examples of surfactants that may be used include sesquioleic acid sorbitan, sorbitan fatty acid esters, glycerin fatty acid esters, diglycerin fatty acid esters, polyoxy ethylene addition fatty acid esters, propylene fatty acid esters, ethylene glycol fatty acid esters, pentaerythritol fatty acid esters, polyethers One or two or more mixtures selected from the group consisting of modified silicones and the like may be used. In addition, a number of known surfactants may be used, and both liquid and solid phases may be used at room temperature. It can be suitably used for mixing and dispersing.

Particularly, in the following Example 2, since the content of silicon is relatively high, polyether-modified silicone of silicon type or the like may be used more appropriately. In Example 3, in order to further increase the water content and stabilize water, As the amino acid gel emulsification method can be introduced, it may be used in a somewhat limited manner depending on the type of surfactants available.

In this case, the surfactant is particularly represented by (1) a fatty acid partial ester of a polyhydric alcohol having at least three or more hydroxy groups in one molecule of the surfactant. (2) The HLB of the surfactant may be in the range of about 2.0 to 6.0, (3) the hydrophobic fatty acid having about 16 to 18 carbon atoms, and (4) the liquid at room temperature may be preferably used.

Examples of the surfactant that can be used while satisfying the above conditions are glycerin fatty acid ester, diglycerin fatty acid ester, pentaerythritol fatty acid ester, sorbitan fatty acid ester, polyoxyethylene (2,4 mole), and the like. Amino acids and salts thereof used together to form an amino acid gel include el-alanine, beta-alanine, el-arginine hydrochloride, el-aspartate sodium salt hydrate, el-gulutamate sodium baggage, glycine, el-histidine hydrochloride hydrate , Hydroxy L-proline, L- lysine hydrochloride, el-serine and the like can be selected from the group consisting of one or two or more, the amino acid gel emulsification method introduced here is known as a general emulsification method In this way, by adding an electrolyte to prepare an emulsion stick, further increase the water content and At the same time to improve the stability of the moisture contained.

The present specification presents three types of formulations containing electrolytes.

The electrolyte is the core of the present invention and is commonly contained as in the embodiments described below.

In the above, the electrolyte is a concept introduced for the first time by the present invention, the introduction of this electrolyte not only increases the water content in the composition, but also the stability of the composition, as well as the maintenance of the formulation, especially at low temperatures, despite an increase in the water content. It has been found experimentally to provide excellent physical properties for stability at.

As examples that can be used, those that can be dissociated in an aqueous solution at room temperature can be used, and are selected from the group consisting of inorganic electrolytes such as magnesium sulfate sodium chloride, aluminum chloride, calcium sulfate, calcium phosphate and sodium phosphate, and organic electrolytes such as sodium alginate. One or more than two mixtures may be used, as well as various kinds of electrolytes.

In the above, the polyhydric alcohol increases the affinity between the oily component and the aqueous component and contributes to the improvement of the moisturizing property, and promotes the dispersion of solids such as pigments, and in particular, contributes to the stability improvement of the water-in-oil type emulsion cosmetics. . In addition, when the content of polyhydric alcohol is extremely high compared to the water content in many cases of the prescription, it exhibits a bactericidal effect, so that only a very small amount can be used even when no babuje is used or used. This can also be easily understood by those skilled in the art, and examples of the polyhydric alcohols that can be used include glycerin, 1.3-butylene glycol, polyethylene glycol, mannitol, sorbitol, propylene glycol, and the like. One or a mixture of two or more selected from among them may be used.

The pigment (including pigment) is used to impart color to the cosmetic composition or further improve the feeling of use, such as conventional inorganic pigments, organic pigments or pigments coated on the surface to improve the mixing and dispersibility, etc. This can be used, and also can be easily understood by those skilled in the art. Examples of pigments that may be used include inorganic pigments such as titanium dioxide, ferrous oxide, ferric oxide, and yellow oxide, and tar pigments for cosmetics (organic pigments) licensed for use on mucous membranes such as red 202 lake and red 201 lake. And one or more mixtures of sericite, talc, mica, silica and the like selected from the group consisting of extender pigments may be used.

The preservative is used to maintain the stability of the improvement product of the time-varying properties of the cosmetic composition containing an organic component, etc., commercially available to buy preservatives such as the stability of paraoxybenzoic acid ester That can be understood by those skilled in the art.

Hereinafter, the present invention will be described in detail with reference to Examples.

EXAMPLE

Each component was mixed homogeneously with the following composition to obtain a cosmetic composition.

In particular, in the case of Example 3, a known amino acid gel emulsification method containing sodium glutamate can be used, and in the case of premixing the amino acid gel, a part of the aqueous component in the precursor composition, a part of the surfactant, a part of the polyhydric alcohol, and After prior mixing of the amino acid salts, the mixture may be used to mix the remaining oil component including the entire oily component and the remaining aqueous component.

[Comparative Example]

Evaluation methods for the compositions of Examples and Comparative Examples according to the present invention and their absence are as follows.

(1) high temperature stability

Observe the condition of each composition after 1 day, 2 days, 3 days, 5 days, and 10 days while leaving it at a temperature of 60 to 70 ° C. higher than the melting point of the water-in-oil type emulsion cosmetic composition. And prepared by dividing into 3 levels of C. Here, grade A is such that there is almost no separation between oily and aqueous components, and the separation of oily and aqueous components is observed. Grade C has no problem in forming into sticks and grade C is an indicator that states that molding with sticks is impossible because oily and aqueous components are separated safely and reconditioning is not achieved by restirring. Are summarized in Table 3.

According to the above results, for molding the lipstick into the water-in-oil type emulsion stick cosmetic composition according to the present invention, it is sufficiently stable during shaping while stirring and heating by melting and warming to 60 to 70 ° C., sometimes after a long time storage. Even if separation occurs, it can be seen that re-stirring may restore the original condition.

(2) Cycling test (high temperature → low temperature cycling test)

In the temperature condition where the four seasons show a clear change in temperature, the product must show stability against repeated temperature change, that is, high temperature and low temperature application. In particular, stability at low or cold temperature is also very important.

In the cycling test, the cycle was changed from room temperature to 45 ℃ → 5 ℃ → -5 ℃ → room temperature in one cycle, and the cycle was returned from room temperature to low temperature (-5 ℃). , The dhsequf standing time was repeated for 12 hours, and the results were divided by A and B grades. Here, grade A is an excellent state in which no problem occurs in molding state or appearance state, and the degree of separation cannot be visually identified. Grade B is an indicator of deformation state, respectively. It is summarized in Table 4.

According to the results, in the case of the oil-in-oil emulsion plastic cosmetic composition according to the present invention it can be seen that the stability is almost completely maintained in the molded state. This is considered to be because the stability is especially excellent at low temperatures.

(3) usability

Since the composition according to the present invention is a cosmetic composition applied directly to the human body inevitably, it was necessary to measure the user's satisfaction, which was performed by a conventional sensory test. In other words, for 30 adult women over the age of 20, five items including smoothness (activity), skin fit (adherence), color expression (hue), persistence (speed), and feeling after application (sensitivity) The results of this study were based on the results of 24 or more people (80%) who feel very good in Grade A, generally good in Grade B, and relatively good in Grade C and poor. The results are summarized in Table 5 with the grade D.

According to the above results, it can be seen that the water-in-oil type emulsion plastic cosmetic composition according to the present invention has a very good feeling.

The present invention as described above is excellent in stability at high and low temperatures even after molding, there is provided an effect to enable long-term storage and use without changing the formulation of the product.

In addition, the present invention provides an effect of improving the feeling of use by maintaining a soft feeling without feeling the skin is hardened after application to the skin.

In addition, the present invention is to provide a sufficient amount of water (water), especially the aqueous component stabilized with the electrolyte to the skin, and the effect of increasing the soft feeling by using a sufficient amount of silicone derivative.

In addition, the present invention has a hardness effect of a certain ratio of the oil, the commanding agent, and the aqueous partial emulsion gel in the composition is similar to the oily component, so that the strength of the remaining film after absorption of water after application of the skin increases, so it remains on the skin for a long time. So-called long lasting effect is provided.

Although the present invention has been described in detail only with respect to the above-described embodiments, it will be apparent to those skilled in the art that the present invention may be changed or modified within the spirit and scope of the present invention, and such changes or modifications are attached to the appended claims. Should be limited by

Claims (1)

In a conventional water-in-oil emulsion plastic cosmetic composition containing an aqueous component, a surfactant, an electrolyte, a polyhydric alcohol, a pigment, a preservative, and an oily component, an aqueous component 20-25 including purified water or purified water in which amino acids and salts thereof are dissolved. 0.1-5% by weight of an electrolyte consisting of one or more mixtures selected from the group consisting of inorganic electrolytes such as magnesium sulfate, aluminum chloride, sodium chloride, calcium sulfate, calcium phosphate, sodium phosphate and organic electrolytes such as sodium alginate Water-in-oil type emulsion stick cosmetic composition comprising an electrolyte comprising a.