KR20200140092A - Water soluble nail polish composition - Google Patents

Abstract

The present invention relates to a water-soluble nail polish composition. The water-soluble nail polish composition according to an aspect includes silica powder coated with polyurethane, but does not have a high viscosity, and thus has excellent feeling in use such as spreadability. In addition, the present invention has no gloss and does not make a rough surface after drying, thereby expressing smooth nails or toenails, and has an excellent effect that can be removed without using an organic solvent such as acetone.

Description

Water soluble nail polish composition

It relates to an aqueous nail polish composition.

Nail polish is a makeup cosmetic that uses a variety of colors to beautify the nails. Oil-based nail polishes currently used are ester-based, ketone-based, etc. by adding components such as plasticizers, organic and inorganic pigments to film-forming components such as nitrocellulose and resins such as alkyd resin, sulfone resin, amide resin, and acrylic resin. It is common to use it by dissolving it in the solvent of, and if these solvent-based oily nail polishes are used thickly, the smell and toxicity are severe, and there is a risk of fire and explosion. In addition, when removing the oily nail polish, a remover containing a solvent such as acetone should be used, and such a solvent acts to deform nails or roughen the skin. There is a need to change the organic solvent-based oil-based nail polish to a water-based water-based nail polish.

Meanwhile, in order to manufacture a matte nail polish, various silica powders are generally used. In general, when the silica powder is included, the viscosity increases, and the type of silica powder that can be used is limited in the aqueous nail polish. In addition, the silica powder has an effect of lowering the gloss, but in the case of most silica powders, the gloss does not deteriorate enough to say that it is matte. In addition, there is a problem in that the product value as a nail polish is deteriorated because the surface of the nail or toenail is roughened after drying by the silica powder, so that the feeling of use is poor.

Accordingly, there is a need to develop a nail polish having an excellent feeling of use that is in the form of an aqueous nail polish that can solve the problem of oily nail polish and has a matte characteristic.

One aspect provides an aqueous nail polish composition comprising silica powder coated with polyurethane.

Another aspect provides a method of preparing an aqueous nail polish composition comprising silica powder coated with polyurethane.

One aspect provides an aqueous nail polish composition comprising silica powder coated with polyurethane.

The aqueous nail polish composition according to one aspect contains silica powder, but since it contains silica powder coated with polyurethane, the composition has excellent feeling of use due to the soft texture of the surface without increasing the viscosity of the composition excessively, and is matte after drying. It works.

In the present specification, "nail polish" refers to an enamel-like liquid that is painted to add gloss or color to nails or toenails, and may be classified into water-based nail polish and oil-based nail polish. "Oil-based nail polish" is a nail polish based on an organic solvent and has a relatively excellent lasting power, but has a disadvantage in that it has a strong scent using an organic solvent, and a separate remover such as acetone is required upon removal. In contrast, "aqueous nail polish" is a water-based nail polish and does not have the stimulating scent peculiar to oil-based nail polish.

In the present specification, "silica powder" refers to a powder having a white color, excellent thermal stability, a particle size of several µm or less, and a high specific surface area.

The "silica powder coated with polyurethane" refers to a form in which silica powder is coated with polyurethane. The type of the polyurethane (polyurethane) is not limited as long as it is commonly used in cosmetic compositions. The silica powder coated with the polyurethane has a specific surface area (BET specific surface area) of about 100 m ² /g to 150 m ² /g, 110 to 140 m ² /g, or about 120 to 130 measured using a BET measuring device. It may be m ² /g.

"Polyurethane" refers to isocyanates having one or more isocyanate groups (NCO Group) and alcohols having one or more hydroxyl groups (-OH). While radiating, it creates a compound having a structure of [-NHCOO-] _n , which is called a urethane bond, and a combination of more than 1,000 molecules is called polyurethane.

In an attempt to overcome the disadvantages of conventional oily nail polish, when silica powder is used for aqueous nail polish, the viscosity of the composition increases and there is a problem of feeling of use that the surface becomes rough after application. However, in the nail polish composition according to an aspect, when using a silica powder coated with polyurethane rather than a general silica powder, the polyurethane resin and the polyurethane resin were not evenly dispersed by the hydrophilic hydroxyl groups (-OH) present in the silica powder. It is activated through the hydrogen bonding mechanism of, and has excellent hydrophilicity and has the effect of maintaining a smooth cosmetic film.

The silica powder coated with the polyurethane may be included in about 4 to 8% by weight based on the total content of the composition. When the amount of the silica powder coated with the polyurethane is less than about 4% by weight, the content of the silica powder is small, making it difficult to express matte. When the silica powder coated with the polyurethane exceeds about 8% by weight, there is a problem in that the viscosity is excessively increased. In addition, when the content of the silica powder coated with the polyurethane is out of the above range, compatibility with other components may be reduced, and particles may be formed on the surface after drying to remain.

The silica powder coated with the polyurethane may include about 90 to 99% by weight of silica powder, about 1 to 10% by weight of polyurethane, or about 95% by weight of silica powder and about 5% by weight of polyurethane.

The aqueous nail polish composition is characterized in that it has a low viscosity.

The aqueous nail polish composition can be removed with lukewarm water without using an organic solvent such as acetone during washing. In addition, the aqueous nail polish composition may be a peel-off type. The "peel-off type" means a form that can be peeled off and removed without using lukewarm water or lukewarm water without using a separate cleanser during washing. The aqueous nail polish composition may have a peel-off characteristic by including silica powder coated with polyurethane.

The composition according to an aspect may further include purified water. The purified water may mean water from which impurities have been removed through a filter or distillation, but is not limited thereto. The purified water can be used as a solvent. Unlike oil-based nail polish, which uses organic solvents such as esters, ketones, alcohols, and hydrocarbons as the main solvent, water-based nail polish compositions do not use organic solvents, so they do not have a toxic scent and are harmful to the human body and environment. A harmless nail polish composition can be prepared.

The composition according to an aspect may further include a water-soluble film forming agent. The water-soluble film forming agent is not limited to any one as long as it forms a thin film, but for example, polyurethane, acrylic polymer, polyvinylpyrrolidone, polyvinyl alcohol, vinylpyrrolidone vinyl acetate copolymer, polyquaternium Hydroxyethylcellulose, methylcellulose, hydroxymethylcellulose, hydroxypropylmethylcellulose, hydroxypropylcellulose, hydroxypropylgua, carboxymethylcellulose, VP/VA Copolymer, PVP , Ammonium acryloyl dimethyl taurate / VP copolymer, carbomer, magnesium aluminum silicate, or a combination thereof. The acrylic polymer may be a polymer formed of one type of acrylic monomer, or a copolymer formed of two or more types of acrylic monomers. The acrylate-based monomer may include all of acrylic acid, methacrylic acid, and salts, esters, and conjugate bases of derivatives thereof. Types of acrylate monomers include Acrylates, Methacrylates, Methyl acrylate, Ethyl acrylate, and 2-Chloroethyl vinyl ether. , 2-Ethylhexyl acrylate, Hydroxyethyl methacrylate, Butyl acrylate, Butyl methacrylate, Trimethylolpropane triacrylate triacrylate: TMPTA), and the like, but are not limited thereto. The type of salt may include sodium salt, ammonium salt, calcium salt, magnesium salt, etc., but is not limited thereto. The water-soluble film forming agent may be included in about 15 to 30% by weight, about 17 to 25% by weight, or about 19 to 22% by weight based on the total weight of the composition. The water-soluble film forming agent may be included in the composition in a form contained in purified water.

The composition according to an aspect may further include a thickener. The thickener is not limited to any one capable of controlling the viscosity of the composition, but may include, for example, maltodextrin, lithium magnesium sodium silicate, or a combination thereof.

The composition according to an aspect may further include a dispersant. The dispersant may mean a surfactant used to maintain a dispersed state in which solid particles such as pigments are uniformly mixed in a liquid. The dispersant is not limited as long as it is used in cosmetics, but may be polysorbate 60.

In addition to this, the composition may further contain additives such as solvents, preservatives, antifoaming agents, pH adjusters, fragrances, dyes, sunscreen agents, antioxidants, etc., which can be commonly used, and these can be easily purchased and used commercially. .

Examples of the solvent include PPG-2 methyl ether. Examples of the preservative include phenoxy ethanol, 1,2 hexanediol, pentylene glycol, methyl paraoxybenzoate, methylchloroisothiazolinone, a mixture of methylisothiazolinone, and the like. Dimethicone etc. are mentioned as an antifoaming agent. Citric acid, sodium hydroxide, triethanolamine, etc. are mentioned as a pH adjuster. As a dye, a water-soluble tar color etc. are mentioned.

One of skill in the art can select any additional ingredients and/or amounts thereof so that the advantageous properties of the composition according to the present specification are not adversely affected or substantially unaffected by the expected addition.

The composition may be used on nails or toenails, and may be prepared by, for example, a manicure or a top coat.

Expressions such as the term "about", or approximately (approximately)" mean that the stated value can vary to some extent, for example, the value is 10%, 5%, 2%, or 1 %, in some embodiments, the value may vary by 5%, 2%, or 1%, for example, "about 5" is between 4.5 and 5.5, 4.75 and 5.25 , Or between 4.9 and 5.1, or between 4.95 and 5.05.

The terms “have”, “may have”, “includes”, or “may contain” indicate the presence of a corresponding feature (eg, a number, or a component such as a component), and Does not exclude existence.

In the present specification, the singular also includes the plural unless otherwise indicated by the context. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of contradiction, the present specification will control.

Another aspect provides a method of preparing an aqueous nail polish composition comprising silica powder coated with polyurethane.

In one embodiment, the step of uniformly mixing the film forming agent, for example, polyurethane and thickener at room temperature. After mixing, a solvent, an acrylate copolymer, a dispersant, and an antifoaming agent are sequentially added at the same temperature and then uniformly mixed, and a silica powder coated with polyurethane is stirred and added.

The aqueous nail polish composition according to an aspect may include silica powder by including silica powder coated with polyurethane, but the viscosity is not too high, so that the aqueous nail polish composition can be prepared with an excellent feeling of use. In addition, since there is no gloss and the surface is not rough after drying, smooth nails or toenails can be expressed, and there is an excellent effect that can be removed without using an organic solvent such as acetone.

1 is a graph showing the results of measuring the gloss of the nail polish compositions of Example 1 and Comparative Examples 1-6.
2 is a graph showing the results of measuring the viscosity of the nail polish composition of Example 1-4.

Hereinafter, the present invention will be described in more detail through examples. However, these examples are for illustrative purposes only, and the scope of the present invention is not limited to these examples.

Example 1-4: Nail containing silica powder coated with polyurethane Polished Produce

A nail polish containing silica powder was prepared. Each component was weighed according to the content of the components shown in Table 1 below. First, a film forming agent, polyurethane, and a thickener were uniformly mixed for 3 minutes at 200 rpm using an agimixer at room temperature. After mixing, stirring at the same temperature, PPG-2 methyl ether, acrylate copolymer, dispersant, and antifoam were added in order, followed by uniformly mixing at 200 rpm for 3 minutes. Then, the silica powder was added while stirring. Finally, after the preservative was added, the mixture was stirred for 5 minutes to prepare a nail polish composition. Unless stated otherwise herein, component content is in weight percent.

In Example 1-4, silica powder coated with polyurethane was used, and the contents of the silica powder coated with polyurethane were set to 4.0, 5.0, 6.0, and 8.0% by weight, respectively. The silica powder has a specific surface area (hereinafter "BET specific surface area") of about 120 m ² /g measured using a BET measuring device.

As a result, in the case of Example 1-4, it was confirmed that a white opaque matte aqueous nail polish composition was prepared.

division ingredient Content (% by weight) Example 1 Example 2 Example 3 Example 4 One Purified water To 100 To 100 To 100 To 100 2 Polyurethane 20.5 20.5 20.5 20.5 3 PPG-2 methyl ether 10.3 10.3 10.3 10.3 4 Acrylate copolymer 7.0 7.0 7.0 7.0 5 Thickener 7.0 7.0 7.0 7.0 6 Dispersant 0.3 0.3 0.3 0.3 7 Antifoam 0.05 0.05 0.05 0.05 8 antiseptic 1.5 1.5 1.5 1.5 9 Polyurethane coated silica 4.0 5.0 6.0 8.0 Sum 100 100 100 100

Comparative Example 1-6: Preparation of nail polish containing silica powder

A nail polish containing silica powder was prepared in the same manner as described in Examples 1-4. Comparative Example 1-6 was prepared in the same manner as in Example except that silica powder was used instead of silica powder coated with polyurethane. The characteristics of the silica powder used in the composition of each comparative example are as follows.

Comparative Example 1: BET specific surface area of about 120 m ² /g

Comparative Example 2: BET specific surface area of about 155-175 m ² /g

Comparative Example 3: BET specific surface area of about 175 to 225 m ² /g

Comparative Example 4: Dry silica powder, BET specific surface area of about 75 to 105 m ² /g

Comparative Example 5: Dry silica powder, BET specific surface area of about 175 to 225 m ² /g

Comparative Example 6: Dry silica powder, BET specific surface area of about 270 to 330 m ² /g

As a result, it was confirmed that a white liquid composition was prepared in Comparative Examples 1, 2 and 6, and a gel composition was prepared in Comparative Examples 3, 4 and 5.

division ingredient Content (% by weight) Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 One Purified water To 100 To 100 To 100 To 100 To 100 To 100 2 Polyurethane 20.5 20.5 20.5 20.5 20.5 20.5 3 PPG-2 methyl ether 10.3 10.3 10.3 10.3 10.3 10.3 4 Acrylate copolymer 7.0 7.0 7.0 7.0 7.0 7.0 5 Thickener 7.0 7.0 7.0 7.0 7.0 7.0 6 Dispersant 0.3 0.3 0.3 0.3 0.3 0.3 7 Antifoam 0.05 0.05 0.05 0.05 0.05 0.05 8 antiseptic 1.5 1.5 1.5 1.5 1.5 1.5 9 Silica 4.0 4.0 4.0 4.0 4.0 4.0 Sum 100 100 100 100 100 100

Experimental Example 1: Sensory evaluation

The surface roughness and feeling of use were evaluated for the nail polish compositions of Example 1 and Comparative Examples 1-6, and a detailed evaluation method is as follows.

The compositions of Example 1 and Comparative Examples 1-6 were provided to 20 consumers in their 20s and 30s. Then, when applying the product, the feeling of use (applyability) was evaluated, and after 30 minutes, the condition of the surface was evaluated. After evaluating each item, a score of 0-5 was assigned and the scores were averaged. Table 3 shows the results of evaluating surface roughness and feeling of use of the nail polish compositions according to Example 1 and Comparative Examples 1 to 6.

<Evaluation criteria for surface condition>

1: very bad, 2: bad, 3: moderate, 4: good, 5: very good

Evaluation item Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Surface roughness 4.7 3.2 2.6 4.6 4.5 3.8 1.2 Feeling 4.8 4.1 3.6 1.5 1.8 2.7 3.8

As shown in Table 3, in the case of the nail polish composition of Example 1, a high score was received in terms of surface roughness and feeling of use. On the other hand, the nail polish compositions of Comparative Examples 3, 4, and 5 received a relatively high score in the surface roughness item, but received a very low score in the feeling-of-use item, so the feeling of use was not good, but the surface after drying was soft. In the case of the nail polish compositions of Comparative Examples 1, 2, and 6, the feeling of use was normal, but a low score was received in the surface roughness, so it can be seen that the feeling of use is good, but the state of the surface after drying is rough. That is, it was confirmed that the composition of Example 1 including the silica powder coated with polyurethane was the only one to receive a high score in terms of surface roughness and feeling of use.

Experimental Example 2: Gloss evaluation

The gloss of the nail polish compositions of Example 1 and Comparative Examples 1-6 was evaluated. Specifically, the glossiness was written in the Gloss unit, which is the gloss unit, with a 60° measurement using a BYK Gardner gloss meter. The results are shown in FIG. 1.

1, the glossiness of the nail polish compositions of Example 1 and Comparative Example 6 was the lowest. In the case of Comparative Examples 1 to 5, it can be seen that the gloss is high and is not suitable for use in a matte nail polish composition.

On the other hand, in the case of the composition of Comparative Example 6, it exhibited a low gloss, but as evaluated in Experimental Example 1, the roughness of the surface was severe, and thus it was not suitable for use in a matte nail polish composition.

Therefore, it can be seen that the nail polish composition of Example 1 has low glossiness and is suitable for use in a matte nail polish composition.

Experimental Example 3: Viscosity Evaluation

In water-based nail polish, when silica is applied, the viscosity increase effect occurs severely, so the lowest viscosity change is considered to be excellent. Therefore, the viscosity of the nail polish composition of Examples 1-4 was evaluated. Viscosity was measured by taking a part from the bulk composition of Example 1-4 and measuring it with a brookfield low viscosity meter No. 3 pin 30 rpm, and the results are shown in FIG. 2. As shown in FIG. 2, it was confirmed that the viscosity increased as the content of the silica powder increased immediately and one month after applying the aqueous nail polish composition.

Therefore, in Examples 1 to 3, the viscosity increase was not large as the content increased, but the viscosity increase was large in the composition of Example 4 containing 8% by weight of silica powder coated with polyurethane. It can be seen that a cosmetic composition containing more than 8% by weight of the resulting silica powder is not suitable for use as an aqueous nail polish.

Claims (7)

An aqueous nail polish composition comprising silica powder coated with polyurethane. The composition of claim 1, wherein the silica powder coated with the polyurethane is contained in an amount of 4 to 8% by weight based on the total content of the composition. The composition of claim 1, wherein the silica powder coated with polyurethane comprises 90 to 99% by weight of silica powder and 1 to 10% by weight of polyurethane. The composition of claim 1, which is matte after application. The composition of claim 1, further comprising purified water, a water-soluble film-forming agent, a dispersing agent, a thickening agent, an antifoaming agent, or a combination thereof. The composition of claim 5, wherein the water-soluble film forming agent is polyurethane. The composition of claim 1, which is a peel off type.

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