JPH04103512A - water-based nail polish - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a water-based nail beauty product, and more specifically, to a water-based nail beauty product that uses water as the main ingredient instead of the organic solvents conventionally used in nail beauty products. Regarding fees.

The nail beauty agent in the present invention includes nail enamel, nail enamel base coat, nail enamel overcoat, and the like.

[Prior art and its problems] Nail cosmetics such as nail enamel, nail enamel pace coat, and nail enamel overcoat are widely used to color and decorate nails and to prevent the occurrence of scratches on nails. .

Conventional nail polishes are mainly based on resins such as nitrocellulose and alkyd resins as film-forming agents, as well as plasticizers and organic solvents. However, although these organic solvent-based nail polishes have excellent performance as film-forming agents, they have problems with flammability, solvent odor, and effects on the human body due to the use of organic solvents, especially negative effects on the nails themselves. It has serious drawbacks.

In order to solve these drawbacks, water-based nail polishes that do not use organic solvents have been developed and proposed in recent years.

For example, Japanese Patent Publication No. 54-28836 and Japanese Patent Publication No. 55-43
Publication No. 445 discloses nail beauty products made of acrylic polymer emulsions, but as far as the present inventors have tested, they have poor brush handling properties, film forming properties (particularly low hybridization film properties), and coating properties. The film is inferior in terms of gloss, etc.

Also, JP-A-56-131513 and JP-A-57-
No. 56410 discloses nail cosmetics made of acrylic polymer microemulsions, but the coating films obtained with these nail cosmetics have the drawback of being completely brittle against mechanical friction.

Furthermore, JP-A-56-131513 and JP-A-62-
Although Japanese Patent No. 63507 discloses a peel-off water-based nail polish, it has the drawback that it peels off easily during daily use, so it cannot be said to be practical.

Furthermore, all of the above nail polishes use polymer emulsions produced by emulsion polymerization using natural or synthetic water-soluble polymers and emulsifiers as film-forming agents, and these film materials themselves have poor water resistance, making them difficult to put into practical use. It has been difficult to obtain sufficient performance as a long-lasting nail polish.

On the other hand, coating compositions utilizing basic amino nitrogen-containing monomers are disclosed in British Patent No. 1,074,201;
The patent also shows examples of water-based nail beauty products. However, this water-based nail polish uses a polymer emulsion formed from a basic amino nitrogen-containing monomer to form a film that can be removed with an acid, and the polymer is not positively charged in the system. That is,
The system is alkaline because it is thickened with soap.

Furthermore, according to the claims of the same patent, wax is blended as an essential component, and this supplements water resistance and gloss, but in order to blend wax into an aqueous system, a surfactant must be added. This is essential, and the addition of this surfactant impairs water resistance, making it unavoidable to reduce the adhesion required by nail polishes.

[Means for Solving the Problems] In view of the above situation, the present inventors have improved gloss, adhesion, water resistance,
Painting IK! ! We have conducted intensive research to obtain a water-based nail polish that has excellent properties such as high strength, no flammability, and no solvent odor.

The inventor of the present invention particularly focused on the electrical interaction between nails and polymer emulsions, and as a result of his studies, he found that cationic polymer emulsions with appropriate cationic charges have good adhesion to nails and can be used as nail beauty products. They also discovered that it can be used advantageously and completed the present invention.

That is, the present invention provides an aqueous nail beauty product characterized by containing a cationic polymer emulsion in an amount of 5 to 60% by weight as a solid content.

The polymer emulsion used in the present invention is obtained by polymerizing a monomer having a basic nitrogen and a polymerizable double bond (hereinafter abbreviated as "r-cationic monomer").

Examples of cationic monomers include (meth)acrylic esters or (meth)acrylamides having a dialkylamino group such as N,N-dimethylaminoethyl (meth)acrylate, N,N-dimethylaminepropylacrylamide, etc. Styrenes having a dialkylamino group such as dimethylaminostyrene and N,N-dimethylaminomethylstyrene; vinylpyridines such as 4-vinylpyridine and 2-vinylpyridine; Examples include those quaternized with a known quaternizing agent such as arylsulfonic acid or dialkyl sulfate.

The cationic polymer emulsion of the present invention can be produced by appropriately combining at least one of the above cationic monomers and other polymers having a polymerizable double bond, and performing soap-free polymerization using a reactive emulsifier or emulsifier. It can be obtained as an emulsifier-free polymer emulsion by polymerization using a known method such as heterogeneous polymerization in an aqueous medium.

Monomers with double bonds that can be copolymerized with cationic monomers (hereinafter referred to as "vinyl monomers") include:
There are no particular limitations, such as methyl acrylate, ethyl acrylate, n-butyl acrylate, lauryl acrylate,
(Meth)acrylic acid esters such as methyl methacrylate, ethyl methacrylate, and n-butyl methacrylate; Styrenic monomers such as styrene and chlorostyrene; t-
Examples include N1i-substituted (meth)acrylamide such as butylacrylamide; acrylonitrile and methacrylonitrile; one or more of these can be selected.

A particularly preferred cationic polymer emulsion of the present invention contains 0.5 to 10% by weight of cationic monomer (hereinafter simply referred to as 1%) and 90 to 99.5% of vinyl monomer.
It is obtained by adding water to an organic solvent solution of a copolymer obtained by copolymerizing and then distilling off the organic solvent (phase inversion emulsification method). Here, the organic solvent refers to a solvent that has a boiling point lower than that of water and is miscible with water, such as methyl ethyl ketone and lower alcohol.

The blending ratio of the cationic monomer and vinyl monomer for preparing the cationic polymer emulsion of the present invention is 0.5 to 10% of the former and 90 to 99.5% of the latter,
More preferably the former is 2 to 10% and the latter 90 to 98%. If the amount of cationic monomer is less than 0.5%, a stable polymer emulsion cannot be obtained, and if it exceeds 10%, a polymer with water resistance of practical use cannot be obtained.

In order to copolymerize a cationic monomer and a vinyl monomer, a known radical initiator may be used and the copolymerization may be carried out by a known polymerization method such as a solution polymerization method, a bulk polymerization method, or a precipitation polymerization method. Since the phase is later inverted to an aqueous system, it is preferable to use a solution polymerization method and proceed to the next step immediately after polymerization. or,
After polymerization, it is also possible to purify the obtained copolymer by a known method before phase inversion to an aqueous system. The weight average molecular weight of the obtained copolymer is preferably 10,000 to 500,000, more preferably 50,000 to 200,000. If the weight average molecular weight is less than 10,000, the physical properties of the coating film will be poor, and if it exceeds 500,000, phase inversion will be difficult and a water-based vinyl resin will not be obtained.

If the basic amino nitrogen of the obtained copolymer is not ionized, ionization is performed using a neutralizing agent as necessary. When using a monomer that is already in the form of a salt as a cationic monomer, ionization with a neutralizing acid is not necessary, but in other cases, ionization with a neutralizing acid is less irritating to nails and skin. Therefore, it is preferable.

As the neutralizing acid, known acids such as inorganic acids such as hydrochloric acid and sulfuric acid; organic acids such as acetic acid, propionic acid, lactic acid, succinic acid, and glycolic acid can be used.

There is no limit to the degree of neutralization, but the pH of the obtained aqueous vinyl resin
It is desirable to neutralize so that it is near neutrality.

In order to phase-invert the copolymer thus obtained into an aqueous system and make it into an aqueous resin, the copolymer is made into a solution of an organic solvent such as an alcohol-based, ketone-based, ester-based, or ether-based solvent, and water is added to the solution. The organic solvent may be distilled off.

The concentration of the organic solvent solution is determined by law depending on the composition and molecular weight of the copolymer, but is usually 10 to 80%,
Preferably it is 20-70%.

Among the organic solvents mentioned above, alcohol-based and/or ketone-based organic solvents are preferable because phase inversion can be effected well. In the case of solution polymerization, the solvent for polymerization can be arbitrarily selected, but it is preferable to use the organic solvents mentioned above because the steps from polymerization to phase inversion can be simplified.

Examples of the alcoholic solvent used in the present invention include methanol, ethanol, n-probanol, isopropanol, and the like, with isopropanol being preferred.

Examples of the ketone solvent include acetone, methyl ethyl ketone, diethyl ketone, etc., with methyl ethyl ketone being preferred.

These may be used singly or in combination.

The phase inversion from an organic solvent solution to an aqueous system as described above can be carried out by a conventionally known method. Bye. In this manner, after phase inversion to an aqueous system, the organic solvent is distilled off under normal pressure or reduced pressure, thereby obtaining a cationic polymer emulsion by phase inversion emulsion polymerization.

In addition, the polymer emulsion of the present invention can also be used by arbitrarily mixing two or more types of polymerized emulsions separately. It is also possible to produce a composite polymer emulsion with a multilayer structure by performing seed polymerization in multiple stages in the presence of a phase inversion emulsion polymerization polymer emulsion, and use this.

The surface charge of the above cationic polymer emulsion is
In particular, it becomes a cation in the acidic to neutral region, but as a result of research by the present inventors, when this surface charge is +10 mV to 100 mV as a zeta potential, the adhesion to the nail to be adhered to is good, which is preferable. Furthermore, it is preferable that the zeta potential is in the range of +30 mV to 90 mV. If the zeta potential is less than +10 mV, it is difficult to obtain a stable polymer emulsion.

Therefore, a particularly preferable embodiment of the cationic polymer emulsion of the present invention has a zeta potential of +10 to
It is of 100 mV.

In addition, the cationic polymer emulsion of another preferred embodiment of the present invention has a surface free energy of 30 to 50 erg/cm2, particularly 3.
5 to 45 erg/am2. Such a polymer emulsion has particularly excellent adhesiveness.

The film referred to here refers to the surface film on the air side when the film is formed, and its surface free energy (
γ5=γ3″+γ5p)Lt (I) It is calculated by the formula.

γL(++CO5θ)=2[(7♂711') I/2
+(7w'γm') 2] - (1) γL: Surface free energy of liquid θ: Contact angle γ♂: H! Dispersion force component molecule of surface free energy of i-body!l': Surface free energy of solid Dispersion force component L2: Polar force component of the surface free energy of the liquid Element d': Polar force component of the surface free energy of the solid. It is possible to measure the surface free energy of a cationic polymer emulsion film. Examples of two types of liquids that can be used to measure this free energy are water (γ, = 72.Oe rg/cm2);
, γL'=23.2 erg/cm2y, =48.8
erg/cm2), methylene iodide (γ = 50.
4 erg/cm2 γ.

=50.4erg/cm2 γL'=Oerg/cm2
) etc.

The water-based nail beauty preparation of the present invention is prepared by blending the above cationic polymer emulsion as a film-forming base. The amount of cationic polymer emulsion is:
5 to 60% (as solid content). If it is less than 5%, it will be necessary to apply several coats to obtain the coating film required for practical use, and if it exceeds 60%, the viscosity of the nail polish will increase and the application properties such as brush handling will be affected. A decline is seen.

In addition to the cationic polymer emulsion, the water-based nail beauty preparation of the present invention also contains pigments, dyes, preservatives, fragrances, plasticizers, film-forming aids, thickeners, wetting agents, antifoaming agents, and fillers. etc. can be blended.

As pigments, especially R-221, R-226, B~40
4. Known organic pigments such as Y-401 can be used. In addition to such organic colorants, inorganic materials such as titanium dioxide, brown iron oxide, red iron oxide, mica titanium bismuth oxychloride can also be used.

As plasticizers and film-forming aids, known ones such as cellosolve, methyl cellosolve, butyl cellosolve, carpitol, butyl carpitol, cellosolve acetate, butyl cellosolve acetate, butyl carpitol acetate, hexylene glycol, etc. can be used. From the viewpoint of storage stability and water resistance of the coating film, the blending amount is preferably 0 to 15%.

Known thickeners can be used, but since the polymer emulsion is cationically charged, nonionic water-soluble thickeners such as polyvinyl alcohol, polyvinylpyrrolidone, polyacrylamide, polyethylene oxide, methylcellulose, hydroxyethylcellulose, and hydroxypropylmethylcellulose are used. Cationically modified products such as thickeners, cationized guar gum, and cationized cellulose can also be used.

In addition, in the water-based nail beauty agent of the present invention, the cationic polymer emulsion must be positively charged in the system,
For this purpose, it is desirable that the liquid condition of the system be acidic to neutral.

The specific pH is preferably 2 to 8, particularly 3 to 7.

[Function] Cationic polymer emulsions polymerized without emulsifiers provide suitable film-forming properties and film strength when used as nail cosmetics, but the reason for this is that the cationic polymer emulsions and nails This is thought to be due to strong electrical interaction between them. In other words, the nails to be treated with beautifying nails are made of hard keratin, similar to hair, and strongly adsorb cationic substances, but the polymer emulsion of the present invention has an appropriate cationic charge and forms a strong film between the nails and the nails. It is thought that it forms and exhibits sufficient performance as a nail beautifying agent.

Furthermore, since the cationic polymer emulsion of the present invention does not contain emulsifier components such as surfactants, the resulting coating film also has excellent water resistance.

[Effects of the Invention] The nail beauty product of the present invention satisfies all the properties such as water resistance, adhesion, and abrasion resistance that could not be achieved with conventional water-based nail beauty products, and it is suitable for nail beauty products using organic solvents. Since it has performance similar to or better than nail polish, it can be widely used as a substitute for nail polish.

[Example] Next, the present invention will be explained in more detail with reference to Synthesis Examples, Examples, and Comparative Examples, but the present invention is not limited in any way by these Examples.

In addition, the surface free energy and zeta potential were measured as follows.

Surface free energy: The polymer emulsion was applied to a glass plate using an applicator (thickness 0.254 mm), and after drying at room temperature for 24 hours, the contact angle with respect to two liquids (water, methylene iodide) was calculated as the contact angle. The contact angle was measured using a contact angle meter [FACE contact angle meter, CA-P type, Kyowa Interface Science ■] and was determined by substituting the obtained contact angle value into the above formula (I).

Zeta potential: The polymer emulsion was diluted 1,000 times with ion-exchanged water, and was analyzed using a microscope using Leser Zee 501 manufactured by Peg+ Kes.
It was determined by R electrophoresis.

Synthesis Example 1 A reactor equipped with a stirrer, a reflux condenser, a dropping funnel, a thermometer, and a nitrogen introduction tube was charged with 50 parts of methyl ethyl ketone, and nitrogen gas was passed through the reactor to remove dissolved oxygen.

Meanwhile, in the dropping funnel were 35 parts of methyl ethyl ketone, 56 parts of methyl methacrylate, and 4 parts of n-butyl acrylate.
0 parts, N,N-dimethylaminoethyl methacrylate
4 parts and 0.2 parts of azobisisobutyronitrile.

While stirring, the temperature inside the reactor was raised to 80°C, and a solution of the monomers and radical initiator in methyl ethyl ketone was added dropwise from the dropping funnel over 2.5 hours. Two hours after the completion of dropping the monomer, a solution of 0.2 parts of azobisisobutyronitrile dissolved in 10 parts of methyl ethyl ketone was added. 3
After aging at the same temperature for a period of time, a solution of 0.1 part of azobisisobutyronitrile dissolved in 5 parts of methyl ethyl ketone was added again, and the reaction was continued for an additional 5 hours to obtain a copolymer.

A part of the obtained copolymer was isolated and its molecular weight was measured by gel permeation chromatography, and the weight average molecular weight was 75,000. The calibration curve for gel permeation chromatography was prepared using polystyrene as a standard substance (solvent: tetrahydrofuran).

After the reaction, the copolymer solution was cooled to room temperature, and lactic acid 5.
6 parts were added to neutralize the mixture, and further 400 parts of ion-exchanged water was added while stirring at 300 rPm. Methyl ethyl ketone was distilled off at 40°C under reduced pressure, and water was further distilled off at 50°C to obtain a polymer emulsion with a solid content of 30%.

The zeta potential of the obtained polymer emulsion was +40
It was mV. Further, the surface free energy of the formed film was 42 erg/cm2.

Synthesis Example 2 50 parts of isopropanol was charged into a reactor equipped with a stirrer, a reflux condenser, a dropping funnel, a thermometer, and a nitrogen introduction tube, and dissolved oxygen was removed by flowing nitrogen gas.

Meanwhile, 35 parts of isopropanol, 50 parts of styrene, 46 parts of ethyl acrylate, 4 parts of N,N-dimethylaminopropylacrylamide, and 0.2 part of azobisisobutyronitrile were charged into the dropping funnel.

While stirring, the temperature inside the reactor was raised to 80° C., and the isopropanol solution containing the above monomer and radical initiator was added dropwise from the dropping funnel over 2.5 hours. Two hours after dropping the monomer, a solution of 0.2 parts of azobisisobutyronitrile dissolved in 10 parts of isopropanol was added. After aging at the same temperature for 3 hours, azobisisobutyronitrile 0
．． Add 1 part dissolved in 5 parts isopropanol,
Repulsion was continued for another 5 hours to obtain a copolymer.

When a part of the obtained copolymer was isolated and its molecular weight was measured by gel permeation chromatography, its weight average molecular weight was 75,000. The calibration curve for gel permeation chromatography was prepared using polystyrene as a standard substance (solvent: tetrahydrofuran).

After the reaction, the copolymer solution was cooled to room temperature, and vinegar M5
．． 6 parts were added to neutralize the mixture, and then 400 parts of ion-exchanged water was added while stirring at 300 rpm. Under reduced pressure, methyl ethyl ketone was distilled off at 40'C, and water was further distilled off at 50'C to obtain a polymer emulsion with a solid content of 25%.

The zeta potential of the obtained polymer emulsion was +62
It was mV. The surface free energy of the formed film was 45 erg/cm2.0 Synthesis Example 3 In the same manner as in Synthesis Example 1, t-butyl methacrylate
5 parts, 2-ethylhexyl acrylate 30 parts, N,N
- 5 parts of dimethylaminostyrene was polymerized in methyl ethyl ketone to obtain a copolymer. The weight average molecular weight of this copolymer was 90,000.

Next, add 4.0 parts of propionic acid to neutralize, and then add 300 parts of propionic acid.
While stirring at rpm, 400 parts of ion-exchanged water was added. Methyl ethyl ketone was distilled off at 40°C under reduced pressure, and further heated at 50°C.
The water was distilled off to obtain a polymer emulsion with a solid content of 30%.

The zeta potential of the obtained polymer emulsion is +62m
V, and the surface free energy of the formed film was 44 erg/cm''.

Synthesis Example 4 In the same manner as in Synthesis Example 1, 50 parts of styrene, 46 parts of methyl acrylate, and 4 parts of vinylpyridine were polymerized in isopropanol to obtain a copolymer. The weight average molecular weight of this copolymer was 78,000.

Next, 2.3 parts of lactic acid was added to neutralize the mixture, and 400 parts of ion-exchanged water was added while stirring at 300 rpm. 40°C under reduced pressure
The isopropanol was distilled off at 50° C., and the water was further concentrated at 50° C. to obtain a polymer emulsion with a solid content of 25%.

The zeta potential of the obtained polymer emulsion was +40
mV, and the surface free energy of the formed film was 45erg/Cm2.

Synthesis Example 5 In the same manner as in Synthesis Example 1, 66 parts of methyl methacrylate, 13 parts of ethyl acrylate, 13 parts of n-butyl acrylate, and N,N-dimethylaminomethylstyrene were added.
Eight parts were polymerized in methyl ethyl ketone to obtain a copolymer.

The weight average molecular weight of this copolymer is 90.000, and the softening temperature was 40°C.

Next, 4.5 parts of acetic acid was added to this copolymer to neutralize it, and the phase was inverted to water in the same manner as in Synthesis Example 1 to obtain a polymer emulsion with a solid content of 30%.

The zeta potential of the obtained polymer emulsion was +40
mV, and the surface free energy of the formed film was 43 erg/cm2.

Synthesis Example 6 In the same manner as in Synthesis Example 1, 70 parts of ethyl methacrylate, 25 parts of ethyl acrylate, and 5 parts of N,N-dimethylaminepropylacrylamide were polymerized to obtain a copolymer. However, isopropyl alcohol was used as the polymerization solvent instead of methyl ethyl ketone. The weight average molecular weight of this copolymer was 63,000.

Next, 2 to 3 parts of glycolic acid was added to this copolymer to neutralize it, and the phase was inverted to water in the same manner as in Synthesis Example 5 to obtain a polymer emulsion with a solid content of 30%.

The zeta potential of the obtained polymer emulsion is +30
mV, and the surface free energy of the formed film was 46 e rg/cm2.

Synthesis Example 7 Into a reactor equipped with a stirrer, a reflux condenser, a dropping funnel, a thermometer, and a nitrogen introduction tube, 200 parts of the aqueous vinyl resin synthesized in Synthesis Example 1 and 100 parts of water were charged, and nitrogen gas was introduced into the reactor. Dissolved oxygen was removed.

Meanwhile, 50 parts of isobutyl methacrylate and 75 parts of methanol were charged into the dropping funnel.

While stirring, the methanol solution of the monomer was dropped into the reactor using a dropping funnel over 1 hour. Raise the temperature inside the reactor to 70°C, add 0.2 parts of potassium persulfate to water 10
The solution dissolved in one portion was added. The polymerization reaction was completed by aging at the same temperature for 6 hours. After cooling the inside of the reactor to 50°C, the mixture was concentrated by distilling off methanol and water at 50°C under reduced pressure to obtain an aqueous composite polymer emulsion with a solid content of 35%.

The zeta potential of the obtained polymer emulsion was +40
mV, and the surface free energy of the formed film was 39 erg/cm2.

Synthesis Example 8 Into a reactor equipped with a stirrer, a reflux condenser, a dropping funnel, a thermometer, and a nitrogen introduction tube, 200 parts of the aqueous vinyl resin synthesized in Synthesis Example 1 and 100 parts of water were charged, and nitrogen gas was introduced into the reactor. Dissolved oxygen was removed.

Meanwhile, add 40 parts of styrene and 80 parts of ethanol to the dropping funnel.
1 part, and 0.2 part of 2,2°-azobis(2,4-dimethylvaleronitrile) were charged.

While stirring, the ethanol solution of the monomer and radical initiator was dropped into the reactor from the dropping funnel over 1 hour. The temperature inside the reactor was raised to 60°C, and the mixture was aged at the same temperature for 6 hours to complete the polymerization reaction. Ethanol and water were distilled off in the same manner as above to obtain an aqueous composite polymer emulsion with a solid content of 35%.

The zeta potential of the obtained polymer emulsion was +45
mV, and the surface free energy of the formed film was 38 erg/cm2.

Synthesis Example 9 Into a reactor equipped with a stirrer, reflux condenser, dropping funnel, thermometer, and nitrogen introduction tube, 2.0 parts of sodium dodecylbenzenesulfonate and 220 parts of ion-exchanged water were charged, and nitrogen gas was passed through the reactor to dissolve the dissolved Oxygen was removed.

Meanwhile, 72 parts of methyl methacrylate and n
-28 parts of butyl acrylate were charged.

After heating the above reactor to 60°C, add 0.0% potassium persulfate.
An aqueous solution of 5 parts dissolved in 15 parts of water was added, and the above monomer mixture was added dropwise from the dropping funnel over 1.5 hours. After dropping the monomer, the reaction was continued for 4 hours at 60''C to obtain a polymer emulsion with a solid content of 30%.

The zeta potential of the obtained polymer emulsion was -30
mV, and the surface free energy of the formed film was 51 erg/cm2.

Synthesis Example 10 In the same manner as in Synthesis Example 9, 70 parts of ethyl methacrylate and 30 parts of ethyl acrylate were subjected to fL polymerization to obtain a polymer emulsion.

However, 2.0 parts of sodium lauryl sulfate was used as an emulsifier instead of sodium dodecylbenzenesulfonate.

The zeta potential of the obtained polymer emulsion was -40
mV, and the surface free energy of the formed film was 38 erg/Cm2.

Examples 1 to 8 Aqueous enamels were prepared according to the formulations shown in Table 1.

(Manufacturing method) Add film-forming aids and plasticizers to ion-exchanged water, add pigment slurry ground with a sand grinder, polymer emulsion, thickener, and other ingredients, stir and mix uniformly, and finally was degassed to prepare nail enamel.

(composition) (Margin below) Comparative examples 1-2 Aqueous nail enamel was manufactured using the formulation shown in Table 2.

(Manufacturing method) After adding a film forming aid and a plasticizer to ion-exchanged water and dispersing the pigment therein, add the polymer emulsion of Synthesis Example 9.10 and other ingredients, stir and mix uniformly, and finally Degassed and obtained nail enamel.

(Composition) Test Example The physical properties of the nail enamels obtained in Examples 1 to 8 and Comparative Examples 1 to 2 were evaluated by the following method. The results are shown in Table 3.

(Evaluation method) (1) Drying property A sample is applied to the nail with a nail enamel brush under conditions of a temperature of 25° C. and a relative humidity of 60%, and the drying time to the touch is measured.

O: Within 3 minutes Δ: 3 to 6 minutes ×: 6 minutes or more (2) Gloss At the time of drying property evaluation, the gloss of the dried coating film after 30 minutes is evaluated with the naked eye.

(3) Adhesiveness At the time of drying evaluation, the adhesion to nails was evaluated after 30 minutes by scraping off the film from the surface with a micro spatula.

(4) Water resistance Apply the sample evenly with a nail enamel brush to a 0.5 x 15 x 40 sized nylon plate, dry for 1 hour at a temperature of 25°C and a relative humidity of 60%, and then soak in water at 35°C. After soaking for 1 hour, the presence or absence of deterioration of the coating film (cloudiness, swelling, softening, peeling, etc.) is evaluated.

(5) When evaluating abrasion resistance and drying properties, dry the paint film after 30 minutes by drying it with a cotton cloth 50 times! Observe the condition after rubbing.

(6) Smell Sensory evaluation of the odor of the nail enamel bottle at the mouth.

The above evaluation items (2) to (6) were determined as follows.

■: Very good O: Good △: Fair .

Below Up Out wish Man transformation king KK formula

Claims (3)

[Claims] (1) A water-based nail polish containing 5 to 60% by weight of a cationic polymer emulsion as a solid content. (2) The water-based nail beauty preparation according to claim 1, wherein the cationic polymer emulsion has a zeta potential of 10 to 100 mV. (3) Surface free energy of dry film is 30-50er
3. The water-based nail polish according to claim 1 or 2, which has a nail polishing composition of g/cm^2.