KR102401205B1 - Nail polish composition and manufacturin method thereof - Google Patents

Abstract

The present invention relates to a nail polish composition and a method for manufacturing the same. The nail polish composition according to the present invention is prepared in the form of an emulsion using nitrocellulose and a hypoallergenic organic solvent or water instead of a toxic organic solvent, and is harmless to the human body. It has good coating stability on the surface of the toenail, and has excellent application properties, water resistance and glossiness.

Description

Nail polish composition and manufacturing method thereof

The present invention relates to a nail polish composition and a method for preparing the same.

Nail polish refers to cosmetics used to decorate nails and their actions, and is also called manicure, nail varnish, nail enamel, and nail lacquer. With a little management, dramatic effects can be seen, and its influence is growing. However, side effects and environmental hazards are also becoming more and more problems.

Nail polish consists of a film-forming agent that forms a strong and elastic film on the nail, a plasticizer that increases flexibility so that the film does not tear, a colorant to give the desired color, and a viscosity and drying speed control. It consists of a solvent that increases the spreadability, a surfactant and a stabilizer to maintain a uniform composition and state.

In particular, nitrocellulose, the most used filming agent, is a combustible material and poses a risk in the manufacturing process, and organic solvents such as toluene, formaldehyde, and ethyl acetate that cause allergies, respiratory diseases, and cancer are used as soluble solvents. do. These ingredients are classified as volatile organic compounds (VOCs) according to the Korean Society for Environmental Health (2015.02.), which puts the operator, user, and environment at risk. Therefore, alternatives to reduce or completely replace the nitrocellulose content are being explored.

In addition, it was generally prepared by dissolving a solid urethane resin in water. Here, in order to dissolve the solid urethane resin well in water, N-methylpyrrolidone (NMP) or N-ethylpyrrolidone (NEP) was used as a solvent. However, the chemical components of N-methylpyrrolidone (NMP) or N-ethylpyrrolidone (NEP) are highly toxic to the extent that their use is banned in some other countries, and there is a problem in that they are harmful to the human body. These substances harmful to the human body can be absorbed into the body from the nails, and in particular, children or pregnant women who are vulnerable to harmful substances need to be careful not to use it.

The nail polish composition according to the present invention is prepared in the form of an emulsion using nitrocellulose and a hypoallergenic organic solvent or water instead of a toxic organic solvent, so it is harmless to the human body, has good coating stability on the surface of nails or toenails, and has good application and water resistance. And it was confirmed that there is an excellent effect of glossiness, and completed the present invention.

Korean Patent No. 10-1987126

It is an object of the present invention to provide a nail polish composition.

Another object of the present invention is to provide a method for preparing a nail polish composition.

In order to achieve the above object,

The present invention is based on 70 parts by weight of a solvent containing water or ethanol;

n-butyl acrylate (BAM), methacrylic acid (MAA), methyl methacrylate (MMA) and 2-Hydroxyethyl methacrylate (HEMA) ) 85 to 95 parts by weight of an acrylic emulsion containing;

0.5 to 1.5 parts by weight of an initiator; and

1 to 3 parts by weight of surfactant; It provides a nail polish composition comprising a.

In addition, the present invention comprises the steps of stirring a solvent comprising a surfactant, an initiator and water or ethanol (step 1);

Stirring n-butyl acrylate, methacrylic acid, methyl methacrylate and 2-hydroxyethyl methacrylate in the presence of a surfactant and a solvent comprising water or ethanol to obtain a pre-emulsion solution (Step 2) ; and

Polymerizing by dropping the preliminary emulsion solution of step 2 into step 1 (step 3); It provides a method of manufacturing a nail polish composition comprising:

The nail polish composition according to the present invention is prepared in the form of an emulsion using nitrocellulose and a hypoallergenic organic solvent or water instead of a toxic organic solvent, so it is harmless to the human body, has good coating stability on the surface of nails or toenails, and has good application and water resistance. and excellent glossiness.

1 is a result of measuring the particle size of an aqueous nail polish composition of Example 1 according to the present invention.
2 is a result of measuring the particle size of the ethanol nail polish composition of Example 2 according to the present invention.
3 is a test result of the application of the aqueous nail polish composition of Example 1 according to the present invention (a. First application of Example 1-1, b. Second application of Example 1-1, c. Example 1-2 1st spreadability, d. Example 1-2 2nd spreadability, e. Example 1-3 3rd spreadability, f. Example 1-3 1st spreadability, g. Example 1 -3 of 2nd application, h. 1st application of Examples 1-4, i. 2nd application of Examples 1-4, j. 3rd application of Examples 1-4).
4 is a result of testing the spreadability of the ethanol nail polish composition of Example 2 according to the present invention (a. First-time applicationability of Example 2-1, b. Second-time applicationability of Example 2-1, c. Implementation Example 2-2 first-time spreadability, d. Example 2-2 first-time spreadability, e. Example 2-3 first-time spreadability, f. Example 2-3 second-time spreadability, g. Example 2 -4 of 1st application, h. Second application of Examples 2-4, i. 3rd application of Examples 2-4).
5 is a result of measuring the glossiness of the aqueous nail polish composition of Example 1 according to the present invention.
6 is a result of measuring the glossiness of the ethanol nail polish composition of Example 2 according to the present invention.

Hereinafter, the present invention will be described in detail.

nail polish composition

The present invention is based on 70 parts by weight of a solvent containing water or ethanol;

n-butyl acrylate (BAM), methacrylic acid (MAA), methyl methacrylate (MMA) and 2-Hydroxyethyl methacrylate (HEMA) ) 85 to 95 parts by weight of an acrylic emulsion containing;

0.5 to 1.5 parts by weight of an initiator; and

1 to 3 parts by weight of surfactant; It provides a nail polish composition comprising a.

In one embodiment of the present invention, the acrylic emulsion contains 35 to 45 parts by weight of n-butyl acrylate, 10 to 20 parts by weight of methacrylic acid, 15 to 25 parts by weight of methyl methacrylate, and 2-hydroxyethyl methacrylic acid. It may include 10 to 20 parts by weight of the rate.

In one embodiment of the present invention, the initiator is used for emulsion polymerization, 2,2'-azobisisobutyronitrile (2,2'-Azobisisobutyronitrile), ammonium persulfate (Ammonium persulfate), potassium persulfate (Potassium persulfate), sodium persulfate or 2,4-dimethylvaleronitrile may be used, and the initiator is added in an amount of 0.5 to 1.5 parts by weight based on 80 parts by weight of the acrylic emulsion. desirable.

In one embodiment of the present invention, the surfactant may be an anionic surfactant, a nonionic surfactant, or a cationic surfactant alone or in combination, and a preferred example of the anionic surfactant is sodium dodecyl. Sodium dodecyl sulfate, Aerosol A-103 (Disodium ethoxylated nonyl phenol half ester of Sulfosuccinic acid), Sodium dodecyl benzene sulfonate, Nonyl phenol ether sulfate, Alkylbenzene Sulfonate (Alkylbenzene Sulfonate), alkyl acyl glutamate (Alkyl acylglutamate), or alkyl phosphate (Alkyl phospate) may be used alone or in combination, but is not limited thereto.

Preferred examples of the nonionic surfactant include polyoxyethylene (23) lauryl ether, polyoxyethylene glycol 600, and Triton™ X-405 (polyethylene glycol tert-octylphenyl ether). ), glycerin fatty acid ester, sucrose fatty acid ester, propylene glycol fatty acid ester, PEG-20 glyceryl triisostearate (PEG-20) glyceryl triisostearate), PEG-15 glyceryl monostearate, or polyglyceryl-2 oleate may be used alone or in combination, but is not limited thereto. does not

Preferred examples of the cationic surfactant include dodecyl ammonium chloride (Dodecyl ammonium Chloride), cetyltrimethylammonium bromide (Cetyltrimethylammonium bromide), alkylammonium mesosulfate (Alkylammonium Methosulfate) or alkyldimethyl ammonium chloride (Alkyl Dimethyl Ammonium) Chloride) may be used alone or in combination, but is not limited thereto.

In one embodiment of the present invention, the surfactant may be polyoxyethylene (23) lauryl ether and cetyltrimethylammonium bromide, and the surfactant is water or Based on 70 parts by weight of a solvent containing ethanol, 1 to 3 parts by weight of polyoxyethylene (23) lauryl ether and 0.5 to 1.5 parts by weight of cetyltrimethylammonium bromide. .

Method for preparing nail polish composition

The present invention comprises the steps of stirring a solvent comprising a surfactant, an initiator, and water or ethanol (step 1);

Stirring n-butyl acrylate, methacrylic acid, methyl methacrylate and 2-hydroxyethyl methacrylate in the presence of a surfactant and a solvent comprising water or ethanol to obtain a pre-emulsion solution (Step 2) ; and

Polymerizing by dropping the preliminary emulsion solution of step 2 into step 1 (step 3); It provides a method of manufacturing a nail polish composition comprising:

In one embodiment of the present invention, the initiator is 2,2'-azobisisobutyronitrile (2,2'-Azobisisobutyronitrile), ammonium persulfate (Ammonium persulfate), potassium persulfate (Potassium persulfate), sodium persulfate Sulfate (Sodium persulfate) or 2,4-dimethylvaleronitrile (2,4-dimethylvaleronitrile) may be used.

In the production method of the present invention, the surfactant may be used alone or in combination with an anionic surfactant, a nonionic surfactant, or a cationic surfactant, and a preferred example of the anionic surfactant is sodium dodecyl sulfo. Sodium dodecyl sulfate, Aerosol A-103 (Disodium ethoxylated nonyl phenol half ester of Sulfosuccinic acid), Sodium dodecyl benzene sulfonate, Nonyl phenol ether sulfate, Alkylbenzenesulfo Nate (Alkylbenzene Sulfonate), alkyl acyl glutamate (Alkyl acylglutamate), or alkyl phosphate (Alkyl phospate) may be used alone or in combination, but is not limited thereto.

Preferred examples of the nonionic surfactant include polyoxyethylene (23) lauryl ether, polyoxyethylene glycol 600, and Triton™ X-405 (polyethylene glycol tert-octylphenyl ether). ), glycerin fatty acid ester, sucrose fatty acid ester, propylene glycol fatty acid ester, PEG-20 glyceryl triisostearate (PEG-20) glyceryl triisostearate), PEG-15 glyceryl monostearate, or polyglyceryl-2 oleate may be used alone or in combination, but is not limited thereto. does not

Preferred examples of the cationic surfactant include dodecyl ammonium chloride (Dodecyl ammonium Chloride), cetyltrimethylammonium bromide (Cetyltrimethylammonium bromide), alkylammonium mesosulfate (Alkylammonium Methosulfate) or alkyldimethyl ammonium chloride (Alkyl Dimethyl Ammonium) Chloride) may be used alone or in combination, but is not limited thereto.

Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the following examples only illustrate the present invention, and the content of the present invention is not limited by the following examples.

<Preparation example 1> Preparation of materials

<1-1> Surfactant

Brij 35 (Polyoxyethylene (23) lauryl ether, polyoxyethylene (23) lauryl ether), PEG 600 (polyoxyethylene glycol 600) as a nonionic surfactant, SDS (sodium dodecyl sulfate; sodium lauryl sulfate) as an anionic surfactant; Cetyltrimethylammonium bromide (CTAB) as a cationic surfactant

<1-2> Monomer

n-butyl acrylate (BAM), methacrylic acid (MAA), methyl methacrylate (MMA), 2-hydroxyethyl methacrylate (HEMA) )

<1-3> Initiator

AIBN (2,2'-azobisisobutyronitrile; 2,2'-Azobisisobutyronitrile), APS (ammonium persulfate; ammonium persulfate)

<Example 1> Preparation of nail polish composition

First, 70 g of distilled water and surfactant (Polyoxyethylene (23) lauryl ether (Brij 35), Polyethylene glycol 600 (PEG600), Sodium dodecyl sulfate (SDS) and Cetyltrimethylammonium bromide (CTAB)) 2 g, 2, After adding 0.15 g (0.6 mmol) of 2'-azobisisobutyronitrile (2,2'-Azobisisobutyronitrile), the mixture was stirred at 200 rpm under a nitrogen stream at a stirring speed.

In the oil phase reaction, according to the ratio of Table 1 below, surfactant and distilled water are put and dissolved, and then monomers n-butyl acrylate (BAM), methacrylic acid (MAA), methyl methacrylate (methyl methacrylate; MMA) and 2-hydroxyethyl methacrylate (HEMA) were stirred to make a pre-emulsion. The temperature of the reactor was maintained at 40° C., and 10 wt% of the prepared pre-emulsion was put into the reactor and polymerization was started. After raising the temperature of the reactor to 75-80°C, the stirring speed was increased to 500 rpm, and the remaining 90 wt% of the pre-emulsion was introduced into the reactor at a constant speed for 4 hours and stirred. The polymerization time was added for 2 hours, and the pH was adjusted by adding ammonia water as a neutralizing agent to adjust the pH of the polymerized emulsion to be close to 6.5-7. Thereafter, a water-based nail polish was prepared by adding an antifoaming agent, a thickener, and a yellow pigment in an amount of 1% or less for further experiments.

division Distilled water (g) Surfactants
(g) Initiator (g) monomer
(g) Brij35 PEG600 SDS CTAB AIBN BAM MMA MAA HEMA Example 1-1
(W-Brij35) 70 2 - - - One 40 20 15 15 Example 1-2
(W-PEG35) 70 One One - - One 40 20 15 15 Examples 1-3
(W-SDS35) 70 One - One - One 40 20 15 15 Examples 1-4
(W-CTAB35) 70 One - - One One 40 20 15 15

<Example 2>

An ethanol nail polish composition was prepared as prepared in Example 1, but using ethanol according to the ratio in Table 2 below instead of distilled water as a solvent.

division ethanol
(g) Surfactants
(g) Initiator (g) monomer
(g) Brij35 PEG600 SDS CTAB AIBN BAM MMA MAA HEMA Example 2-1
(E-Brij35) 70 2 - - - One 40 20 15 15 Example 2-2
(E-PEG35) 70 One One - - One 40 20 15 15 Example 2-3
(E-SDS35) 70 One - One - One 40 20 15 15 Example 2-4
(E-CTAB35) 70 One - - One One 40 20 15 15

The solid content, polymerization conversion, viscosity, and pH of the nail polish compositions prepared in Examples 1 and 2 were measured and shown in Table 3 below.

division Solid
content
(wt%) Conversion
(wt%) Viscosity
(cPs) pH Example 1-1
(W-Brij35) 49.3 98.6 810 7 Example 1-2
(W-PEG35) 48.7 97.4 935 7 Examples 1-3
(W-SDS35) 47.5 95.0 790 7 Examples 1-4
(W-CTAB35) 49.5 99.0 824 7 Example 2-1
(E-Brij35) 49.1 98.2 1660 7 Example 2-2
(E-PEG35) 48.6 97.2 1654 7 Example 2-3
(E-SDS35) 48.3 96.6 1640 7 Example 2-4
(E-CTAB35) 49.8 99.6 1645 7

<Experimental Example 1> Particle size analysis (PSA)

In order to check the particle size of the aqueous nail polish composition of Example 1 and the ethanol polish composition of Example 2, the particle size distribution when the aqueous nail polish was prepared using 4 types of surfactants Brij35, PEG600, SDS, and CTAB is shown in FIG. 1 . As a result, it was confirmed that the nonionic surfactant Brij35 had an average particle size of 105 nm, and when another nonionic surfactant PEG600 was used, an average particle size of 297 nm was determined through particle size analysis. It showed polydispersity. In addition, it was confirmed that the anionic surfactant SDS had an average particle size of 162 nm, and the cationic surfactant had an average particle size of 114 nm.

In addition, the particle size distribution when ethanol type nail polish was prepared using 4 types of Brij35, PEG600, SDS, and CTAB is shown in FIG. As a result, it was confirmed that the nonionic surfactant Brij 35 had an average particle size of 330 nm, and when another nonionic surfactant, PEG600, was used, the particle size analysis result showed that it had an average particle size of 531 nm. showed polydispersity. In addition, it was confirmed that the anionic surfactant SDS had an average particle size of 459 nm, and the cationic surfactant had an average particle size of 367 nm.

<Experimental Example 2> Confirmation of spreadability

In order to check the spreadability of the aqueous nail polish composition of Example 1 and the ethanol polish composition of Example 2, the color and spreadability were checked by repeating the above process three times after applying it to the artificial nail and drying it sufficiently.

As a result, as shown in FIG. 3 , it was confirmed that Example 1-1, which is an aqueous nail polish, applied with a clear color in the first round, but was somewhat uneven in the second round. In the case of Example 1-2, the transparency was very high compared to other compositions in the first round, and it was confirmed that the gloss decreased as the second and third rounds were performed. In the case of Example 1-3, it was confirmed that the application was uniformly applied to the artificial nail in the first round and showed a distinct color, but it was confirmed that the application was somewhat uneven in the second round. In the case of Examples 1-4, it was confirmed that it was transparently applied to the artificial nails in the first round, and showed a clear color, smooth application, and excellent gloss in the second and third rounds.

In addition, as shown in FIG. 4 , it was confirmed that in Example 2-1, which is an ethanol nail polish, bubbles were generated in the first round and somewhat uneven in the second round. Example 2-2 had little transparency in the first round, but it was possible to confirm the thick spreadability as the second coat was applied. Example 2-3 showed transparency in the first round, but showed somewhat uneven color development in the second round. In Example 2-4, particles and bubbles were generated in the first round, so the transparency was slightly less, but it was confirmed that the second and third coats showed deep color development, soft spreadability, and excellent gloss.

<Experimental Example 3> Confirmation of water resistance

To evaluate the water resistance of the nail polish, the degree of swelling and solubility were measured. In this experiment, the applied artificial nail is immersed in water at 25 °C for 48 hours, and then the value is measured by the change in weight. At this time, weight 1 is the weight of the initial film, weight 2 is the weight of the film after immersing in water for 48 hours and then removing the surface moisture, and weight 3 is the weight of the film re-dried at 40 ° C after soaking in water for 48 hours. Calculate according to the formula of

[Equation 1]

division Water Swelling (%) Water Solubility (%) Example 1-1
(W-Brij35) 1.64 2.46 Example 1-2
(W-PEG35) 1.83 2.75 Examples 1-3
(W-SDS35) 5.00 2.27 Examples 1-4
(W-CTAB35) 1.68 1.26 Example 2-1
(E-Brij35) 15.92 4.98 Example 2-2
(E-PEG35) 17.17 6.06 Example 2-3
(E-SDS35) 19.01 5.01 Example 2-4
(E-CTAB35) 17 6.00

Water-based nail polish reduces the whitening phenomenon because the monomer and the emulsifier have good affinity in water and adheres well to the surface of the polymer particles, so molecular movement due to water absorption is reduced. showed a difference of 1-3%. In addition, the nail polish mixed with nonionic and cationic Gemini surfactants in aqueous and ethanol has a larger particle size as the carbon chain increases, so it absorbs moisture well and increases molecular movement. It can be confirmed that the swelling degree and water solubility, which are resistance to the water resistance, are increased, and the water resistance is decreased.

<Experimental Example 4> Glossiness

In order to check the glossiness of the aqueous nail polish composition of Example 1 and the ethanol polish composition of Example 2, the measurements were repeated three times at a 60° mirror surface using a reflectometer, and after drying, at intervals of one day, two weeks, and two months The glossiness of the furnace was measured and compared. Glossiness is classified as 0 (completely matte), 30-40 (semi-glossy), 50-70 (high gloss), and above 70 (full gloss) based on 100 when the reflection of the mirror is 100.

As a result, as shown in Figs. 5 to 6, it was found that the glossiness of the ethanol nail polish composition of Example 2 (see Fig. 6) was superior to that of the aqueous nail polish composition of Example 1 (see Fig. 5). In particular, it was confirmed that the glossiness of the ethanol nail polish composition of Example 2-4 (E-CTAB35) showed at least 85% gloss even after one day, two weeks and two months of drying.

So far, with respect to the present invention, the preferred embodiments have been looked at. Those of ordinary skill in the art to which the present invention pertains will understand that the present invention can be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments are to be considered in an illustrative rather than a restrictive sense. The scope of the present invention is particularly indicated in the claims rather than the foregoing description, and all differences within an equivalent scope should be construed as being included in the present invention.

Claims (9)

based on 70 parts by weight of a solvent including water or ethanol;
n-butyl acrylate (BAM), methacrylic acid (MAA), methyl methacrylate (MMA) and 2-Hydroxyethyl methacrylate (HEMA) ) 85 to 95 parts by weight of an acrylic emulsion containing;
0.5 to 1.5 parts by weight of an initiator; and
1 to 3 parts by weight of surfactant; including,
The acrylic emulsion contains 35 to 45 parts by weight of n-butyl acrylate, 10 to 20 parts by weight of methacrylic acid, 15 to 25 parts by weight of methyl methacrylate, and 10 to 20 parts by weight of 2-hydroxyethyl methacrylate. characterized,
The initiator is 2,2'-azobisisobutyronitrile (2,2'-Azobisisobutyronitrile), ammonium persulfate (Ammonium persulfate), potassium persulfate (Potassium persulfate), sodium persulfate (Sodium persulfate) and 2,4 -Dimethyl valeronitrile (2,4-dimethylvaleronitrile) characterized in that at least one selected from the group consisting of,
The surfactant is polyoxyethylene (23) lauryl ether (Polyoxyethylene (23) lauryl ether) and cetyltrimethylammonium bromide (Cetyltrimethylammonium bromide) in a weight ratio of 1:0.95-1.05, characterized in that mixed,
nail polish composition. delete According to claim 1,
The initiator composition, characterized in that 2,2'-azobisisobutyronitrile (2,2'-Azobisisobutyronitrile). delete delete delete delete delete delete

Images