KR20210118571A - Pressure-sensitive adhesive composition, pressure-sensitive adhesive containing the same, artificial nail and nail stickers comprising the pressure-sensitive adhesive - Google Patents

Abstract

The present invention relates to a pressure-sensitive adhesive composition, an adhesive containing the same, and an artificial nail and nail sticker containing the adhesive. The pressure-sensitive adhesive composition of the present invention is stable during production and storage of the pressure-sensitive adhesive composition containing an adhesive property control agent, has excellent adhesion durability when applied to the artificial nail or nail sticker by adjusted adhesive force, and simultaneously has an effect of mitigating damages to the nail or toenail by maintaining the constant adhesive force even under severe conditions of high temperature, high humidity, and high pressure.

Description

A pressure-sensitive adhesive composition, an adhesive comprising the same, and an artificial nail and nail sticker comprising the adhesive TECHNICAL FIELD

The present invention relates to a pressure-sensitive adhesive composition, a pressure-sensitive adhesive comprising the same, an artificial nail including the pressure-sensitive adhesive, and a nail sticker.

Nail beauty has established itself as a part of fashion, and products such as nail polish and gel nail containing polymer polymers have been used for nails and toenails for cosmetic or cosmetic purposes.

Unlike general manicure, the gel nail does not require drying after the procedure, and it does not show any flaws even if bumped or dented, so there is no difficulty in daily life immediately, and the color and gloss last for 3-4 weeks with one treatment. Although it is known that there is, it is difficult to remove the nail polish applied to the nails after gel nail treatment, and when the nail polish is applied to the nails for a long time, the nail becomes thin or split, and the nail becomes soft and floats. There is this.

Because these products contain organic solvents that are harmful to the human body, they can have a bad effect on the health of the operator and the person being treated during treatment and removal. was requested

Accordingly, in Korean Patent Registration Nos. 10-1226696 (one-touch mounting artificial nail), No. 10-1388254 (sticker for nail), and No. 10-1164554 (double-sided tape for artificial nail), the organic solvent is completely removed from the finished product. Disclosed is an artificial nail or a sticker for nail that can be easily attached and detached using a pressure sensitive adhesive.

The product can be easily and quickly attached and detached by the operator without special skills or tools, but damage to the surface of the nail or toenail is accompanied in the detachment process due to excessive adhesion or changes in adhesion over time, When the shoes are worn for a long time in the environment, particularly in a state attached to the toenails, there is a problem in that the adhesion is increased to aggravate the damage, or it cannot be attached for a long time due to exposure to the external environment.

Korean Patent No. 10-1226696 Korean Patent No. 10-1388254 Korean Patent No. 10-1164554

Accordingly, the technical problem to be solved by the present invention is to provide a pressure-sensitive adhesive composition capable of alleviating damage to nails or toenails, including an adhesive property control agent, an adhesive comprising the same, and artificial nails or nail stickers including the adhesive will be.

One aspect of the present invention for solving the above technical problem includes a pressure-sensitive adhesive (PSA) and an adhesive property control agent, wherein the adhesive property control agent is a group consisting of a natural extract, an antibacterial antiseptic material and a keratin dissolving agent Any one or a mixture of two or more selected from the pressure-sensitive adhesive composition.

Another aspect of the present invention provides a pressure-sensitive adhesive comprising the pressure-sensitive adhesive composition.

Another aspect of the present invention is a pressure-sensitive adhesive layer comprising the pressure-sensitive adhesive; and an artificial nail body attached to one surface of the pressure-sensitive adhesive layer.

Another aspect of the present invention is a pressure-sensitive adhesive layer comprising the pressure-sensitive adhesive; and a film attached to one surface of the pressure-sensitive adhesive layer.

The pressure-sensitive adhesive composition of the present invention is stable during production and storage of the pressure-sensitive adhesive composition, including the adhesive property control agent, and is applied to artificial nails or nail stickers by the adjusted adhesive strength to have excellent adhesion durability, and at the same time, high temperature, high humidity, high pressure It has the effect of mitigating damage to nails or toenails by maintaining a constant adhesive force even under severe conditions.

Figure 1a is a pressure-sensitive adhesive composition solution according to an embodiment of the present invention, Figure 1b is a photograph taken after the pressure-sensitive adhesive composition solution according to a comparative example of the present invention was stored at 60 ℃ for 12 weeks.
Figure 2a is a cross-sectional view of a sample prepared to measure the change in adhesive strength under severe storage conditions, Figure 2b is a photograph of the upper layer of the sample.
3 is a poliscope camera image of the nail appearance before and after attaching and detaching the nail sticker prepared using the double-sided tape of Example 2-2 and Comparative Example 3 of the present invention.
4 is a PRIMOS CR photographed image before and after attachment of a nail sticker prepared using the double-sided tape of Example 2-2 and Comparative Example 3 of the present invention.

Hereinafter, various aspects and various embodiments of the present invention will be described in more detail.

One aspect of the present invention includes a pressure-sensitive adhesive (PSA) and an adhesive property control agent, wherein the adhesive property control agent is any one or a mixture of two or more selected from natural extracts, antibacterial preservatives, and keratin dissolving agents. A pressure-sensitive adhesive composition is provided.

The pressure-sensitive adhesive composition of the present invention appropriately adjusts the adhesive force by adding a pressure-sensitive adhesive polymer to the pressure-sensitive adhesive polymer, thereby generating artificial nails or nail stickers produced including the pressure-sensitive adhesive composition during the detachment process due to excessive adhesive force. It alleviates damage to the nail or toenail, and it can be easily attached and detached.

In addition, existing artificial nails or nail stickers maintain a certain level of adhesiveness after attachment, so that attachment can be continued for a long time and damage to nails can be prevented. When the shoes are worn for a long time in this state, there is a problem in that adhesion is increased to aggravate damage to the toenails, or it cannot be attached for a long time due to exposure to the external environment. However, since the pressure-sensitive adhesive composition of the present invention contains an adhesive property control agent, a rapid increase in adhesive strength does not occur under similar severe conditions, so that it can be adhered for a long time and damage can be alleviated.

In addition, the adhesive property control agent of the present invention does not contain substances such as organic solvents harmful to the human body, and does not adversely affect the health of the user because it contains substances that are safe for the human body used in medicines, cosmetics, food, etc.

The pressure-sensitive adhesive polymer is a pressure-sensitive polymer and refers to a polymer exhibiting adhesiveness when a pressure for adhesion to the adhesive surface is applied. The pressure-sensitive adhesive polymer may be an acrylate polymer obtained by polymerizing any one or a mixture of two or more selected from an acrylic monomer to which an alkyl group having 1 to 18 carbon atoms is added, acrylic acid, methacrylic acid, and an acrylic monomer to which a hydroxyl group is added.

Specifically, the acrylate polymer is polymethyl methacrylate (PMMA: Poly methyl methacrylate), poly-2-hydroxyethyl methacrylate (P2HEMA: Poly-2-hydroxy ethyl methacrylate), polystearyl methacrylate (PSMA) : poly stearylmethacrylate), poly-2-hydroxypropyl methacrylate (P2HPMA: Poly-2-hydroxy propyl methacrylate), polybutyl methacrylate (PBMA: Poly n-butyl methacrylate), polyethyl acrylate (PEA: Poly ethyl acrylate), polybutyl acrylate (PBA), and poly-2-ethyl hexyl acrylate (P2EHA: Poly-2-ethyl hexylacrylate), or a mixture of two or more thereof.

The natural extract may be any one or a mixture of two or more selected from oleanolic acid, oleic acid, rosmarinic acid, pterostilbene and ximenynic acid, Preferably, it may be oleanolic acid or oleic acid. The natural extract is an unsaturated fatty acid material that is harmless to the human body used as a raw material for pharmaceuticals and cosmetics, and has a wound healing effect through inhibition of nitric oxide production and an anti-inflammatory effect through control of the human immune response. Products such as artificial nails and nail stickers to which the pressure-sensitive adhesive composition is applied with the natural extract have the intrinsic effect of alleviating damage to the nail and nail surfaces of the recipient.

The antibacterial and antiseptic material is ethylhexylglycerin, hydroxyacetophenone, octanediol, 1,2-octanediol, hexanediol, 1,2-hexanediol, phenoxyethanol, chlorphenesin (chlorphenesin) and benzyl alcohol (benzyl alcohol) may be any one or a mixture of two or more, preferably ethylhexyl glycerin, octanediol, hexanediol or phenoxyethanol. The antibacterial and antiseptic material prevents the change of the physical properties of the anti-cancer adhesive composition, and the products such as artificial nails and nail stickers to which the pressure-sensitive adhesive composition is applied suppress the growth of harmful bacteria present on the surface of the nail and nail of the person to be treated for healthy hands. ·It has the intrinsic effect of the material to maintain the condition of the toenails.

The keratin solubilizing agent may be any one or a mixture of two or more selected from urea, lactic acid, glycolic acid and salicylic acid, preferably salicylic acid. Keratin (keratin) is a protein that forms the basis of the epithelial structure. It consists of several amino acids such as glutamic acid and arginine. Among them, the content of cysteine is high, and the representative tissues are nails and nails. There are cases in which the keratin grows unnecessarily or ideally due to keratinocyte proliferation, epithelial thickening and skin diseases accompanying these symptoms. It has the effect of preventing or alleviating the above diseases by dissolving or softening the dead skin cells on the nail surface.

The natural extract, antibacterial antiseptic material and keratin dissolving agent are used as an adhesive property control agent in addition to the original efficacy/effect described above, so it is possible to adjust the adhesive properties of the pressure-sensitive adhesive composition to an appropriate range depending on the content. In addition, since it uses a substance that is safe for the human body used for medicines or food, it is easy to manufacture and store because there is no problem such as adversely affecting the health of the operator and the recipient, or having a risk of explosion due to strong volatility.

According to a preferred embodiment, the adhesive property modifier may be any one or a mixture of two or more selected from oleanolic acid, oleic acid, ethylhexyl glycerin, octanediol, hexanediol, phenoxyethanol, and salicylic acid.

In the pressure-sensitive adhesive composition of the present invention, the adhesive strength of the pressure-sensitive adhesive composition tends to decrease as the content of the added adhesive property modifier increases. However, there is a tendency for the adhesion durability to decrease due to active exercise and rapid external environmental changes. In addition, the pressure-sensitive adhesive composition is generally stored as a solution, and as the content of other adhesive properties adjusting agents increases, the solution stability such as the color or viscosity of the pressure-sensitive adhesive composition changes over time, which may cause problems in the manufacturing and storage process. have.

However, it was confirmed that the above-mentioned oleanolic acid, oleic acid, ethylhexylglycerin, octanediol, hexanediol, phenoxyethanol and salicylic acid exhibited the intrinsic efficacy/effect of the material in a specific content range, and had no effect on the stability of the pressure-sensitive adhesive composition. , it was confirmed that even when exposed to high humidity, high pressure conditions, or active exercise, and rapid external environmental changes, the adhesive strength was maintained without significant change, thereby maintaining the adhesion and nail damage.

As can be seen in the examples to be described later, the content range of the adhesive property modifier to have long-term adhesion durability and adhesive strength to alleviate nail damage without affecting the stability of the pressure-sensitive adhesive composition varies depending on the type. were different.

Therefore, the solubility of the adhesive properties modifiers in the pressure-sensitive adhesive composition solution was measured in wt %, the solubility was set as the upper limit, and the weight % without change in the adhesive force was set as the lower limit and the experiment was carried out. The content ranges according to the types of each of the above-described adhesive properties adjusting agents are as follows.

- Oleanolic acid: 0.05 to 0.2% by weight based on the weight of the pressure-sensitive adhesive composition.

-Oleic acid: 0.1 to 3.0% by weight based on the weight of the pressure-sensitive adhesive composition.

- Ethylhexylglycerin: 1.0 to 5.0% by weight based on the weight of the pressure-sensitive adhesive composition.

- Octanediol: 1.0 to 5.0% by weight based on the weight of the pressure-sensitive adhesive composition.

- Hexanediol: 1.0 to 5.0% by weight based on the weight of the pressure-sensitive adhesive composition.

- Phenoxyethanol: 1.0 to 5.0% by weight based on the weight of the pressure-sensitive adhesive composition.

- Salicylic acid: 1.0 to 5.0% by weight based on the weight of the pressure-sensitive adhesive composition.

As described above, it was confirmed that the pressure-sensitive adhesive composition having the composition of the pressure-sensitive adhesive composition of the pressure-sensitive adhesive composition was maintained at a desirable level, such as stability, adhesive strength, and adhesion durability, and the effect of each material (natural extract: nail surface damage relief) Effect, antibacterial and antiseptic material: antibacterial effect, keratin dissolving agent: keratin dissolution effect on the nail surface) could be expressed. In the case of less than the content range according to the type of the adhesive property control agent, it was difficult to expect the original effect of the material, and the adhesive force changes relatively large over time, resulting in a decrease in adhesion durability and damage to nails. When the above content range is exceeded, the pressure-sensitive adhesive composition cannot be prepared and used because the adhesive strength decreases to a level that cannot ensure the required adhesion durability, and the pressure-sensitive adhesive composition is not secured due to precipitation of the adhesive property control agent during storage or changes in color or viscosity did.

The pressure-sensitive adhesive composition may have a 180° peel strength of the tape coated with the pressure-sensitive adhesive composition measured according to ASTM D903 of 500 to 1200 gf/10 mm. The tape coated with the pressure-sensitive adhesive composition may be used without limitation as long as it is a film used to prepare a tape known in the art, for example, SH34 (SKC), CD901 (Kolon Industries), RX600 (Co.) HS Finetec) can be used by applying the pressure-sensitive adhesive composition to the film. It was confirmed that, when having a peel strength of 180° in the above range, it is attached to the nail or toenail to alleviate damage to the nail or toenail, and at the same time, it is possible to secure the adhesion retention force that can be used for a long time. If the 180° peel strength is less than 500 gf/10 mm, the artificial nail or nail sticker manufactured due to insufficient adhesive strength can be easily detached. Or there is a problem that may cause damage to the toenails. Preferably, the 180° peel strength may be 500 to 1000 gf/10 mm, more preferably 600 to 800 gf/10 mm, in that the number of days of attachment can be further increased.

According to the most preferred embodiment, the adhesive property modifier is oleic acid, and the oleic acid may be included in an amount of 0.1 to 1.0% by weight based on the weight of the pressure-sensitive adhesive composition. The pressure-sensitive adhesive composition of the above conditions exhibited a 180° peel strength measured according to ASTM D903 of the applied tape in the range of 600 to 800 gf/10 mm, which is the most preferable range, and the change in adhesive strength under severe conditions of high temperature, high pressure, and high humidity was minimized, and therefore the normal number of attachment days exceeded 10 days. In particular, the pressure-sensitive adhesive composition according to the above conditions significantly improved the adhesion durability compared to other pressure-sensitive adhesive compositions having the same or similar adhesive strength (different types of adhesive properties adjusting agents and content ranges), and damage to nails is alleviated was confirmed. In addition, under the above conditions, unlike other types of adhesive properties modifiers and content ranges, as the content of the pressure-sensitive adhesive composition increased, the adhesive strength showed a tendency to increase. Based on these characteristics, It has the advantage that it can be applied by adjusting the adhesive force according to the type of nail or toenail to be attached.

Another aspect of the present invention provides a pressure-sensitive adhesive comprising the pressure-sensitive adhesive composition.

Another aspect of the present invention is a pressure-sensitive adhesive layer comprising the pressure-sensitive adhesive; and an artificial nail body attached to one surface of the pressure-sensitive adhesive layer.

Another aspect of the present invention is a pressure-sensitive adhesive layer comprising the pressure-sensitive adhesive; and a film attached to one surface of the pressure-sensitive adhesive layer.

Example. Preparation of double-sided tape containing pressure-sensitive adhesive composition

Example 1-1

Ethyl acetate and acrylate pressure-sensitive adhesive solution (BA-2290) was mixed to contain 0.05 wt% of oleanolic acid as an adhesive property control agent, stirred to dissolve completely, and then a pressure-sensitive adhesive composition was prepared. After applying the pressure-sensitive adhesive composition to a backing paper using a coating equipment, a heat curing or UV curing process was performed to prepare a double-sided tape.

Example 1-2

It was carried out in the same manner as in Example 1-1, except that 0.1 wt% of oleanolic acid was mixed.

Examples 1-3

It was carried out in the same manner as in Example 1-1, except that 0.2 wt% of oleanolic acid was mixed.

Example 2-1

It was carried out in the same manner as in Example 1-1, except that 0.1 wt% of oleic acid was mixed instead of oleanolic acid as an adhesive property control agent.

Example 2-2

It was carried out in the same manner as in Example 1-1, except that 0.5 wt% of oleic acid was mixed instead of oleanolic acid as an adhesive property control agent.

Example 2-3

It was carried out in the same manner as in Example 1-1, except that 1 wt% of oleic acid was mixed instead of oleanolic acid as an adhesive property control agent.

Example 2-4

It was carried out in the same manner as in Example 1-1, except that 2 wt% of oleic acid was mixed instead of oleanolic acid as an adhesive property control agent.

Example 2-5

It was carried out in the same manner as in Example 1-1, except that 3 wt% of oleic acid was mixed in place of oleanolic acid as an adhesive property control agent.

Example 3-1

It was carried out in the same manner as in Example 1-1, except that 5 wt% of ethylhexylglycerin was mixed instead of oleanolic acid as an adhesive property control agent.

Example 3-2

In the same manner as in Example 1-1, except that 5 wt% of octanediol (1,2-octanediol) was mixed in place of oleanolic acid as an adhesive property control agent.

Example 3-3

It was carried out in the same manner as in Example 1-1, except that 5 wt% of hexanediol (1,2-hexanediol) was mixed instead of oleanolic acid as an adhesive property control agent.

Example 3-4

It was carried out in the same manner as in Example 1-1, except that 5 wt% of phenoxyethanol was mixed in place of oleanolic acid as an adhesive property control agent.

Example 4

It was carried out in the same manner as in Example 1-1, except that 5 wt% of salicylic acid was mixed instead of oleanolic acid as an adhesive property control agent.

Comparative Example 1

In order to compare/confirm the stability of the pressure-sensitive adhesive composition solution containing the adhesive property control agent, 0.1 to 1 to 2 wt% of panthenol, a vitamin derivative, is mixed instead of oleanolic acid as the adhesive property control agent. Except that, it was carried out in the same manner as in Example 1-1.

Comparative Example 2

In order to compare/confirm the stability of the pressure-sensitive adhesive composition solution containing the adhesive property control agent, it was mixed so that 0.1 wt% of N-acetyl methionine, an amino acid, was added instead of oleanolic acid as the adhesive property control agent. Except that, it was carried out in the same manner as in Example 1-1.

Comparative Example 3

A double-sided tape was prepared in the same manner as in Example 1-1, except that an adhesive property control agent was not added.

Experimental Example 1. Stability test

Before manufacturing the double-sided tapes specified in the Examples and Comparative Examples, each pressure-sensitive adhesive composition solution containing the adhesive property control agent was stored at 60° C. for 12 weeks in order to check the stability of the adhesive property control agent in the manufacturing solution, and the color change over time and viscosity were measured, and the results are shown in Table 1 below.

Representative comparative pictures are shown in FIGS. 1a (3.0 wt%-oleic acid solution) and 1b (0.1/1.0/2.0 wt%-panthenol solution).

division adhesive properties
modifier content (wt%) color change Viscosity Example 1-1 oleanolic acid 0.05 - - Example 1-2 oleanolic acid 0.1 - - Examples 1-3 oleanolic acid 0.2 - - Example 2-1 oleic acid 0.1 - - Example 2-2 oleic acid 0.5 - - Example 2-3 oleic acid 1.0 - - Example 2-4 oleic acid 2.0 - - Example 2-5 oleic acid 3.0 - - Example 3-1 Ethylhexylglycerin 5.0 - - Example 3-2 Octanediol 5.0 - - Example 3-3 hexanediol 5.0 - - Example 3-4 Phenoxyethanol 5.0 - - Example 4 salicylic acid 5.0 - - Comparative Example 1 panthenol 0.1/1.0/2.0 Browning with increasing content - Comparative Example 2 Acetylmethionine 0.1 - Increased viscosity of gelation level

As can be seen in Table 1 and FIG. 1, in the case of the example in which the adhesive property regulator was added, it was confirmed that there was no color change compared to Comparative Example 1, and it was confirmed that there was no change in viscosity compared to Comparative Example 2. .

Experimental Example 2. Adhesion test and adhesion durability measurement test

In order to measure the adhesive strength of the double-sided tapes prepared in Examples and Comparative Examples, 180 ° peel strength using SUS according to the D903 test method prescribed by ASTM (American Society for Testing Materials) ) was measured, and the number of days of attachment was measured after attaching the nail sticker to which the double-sided tape prepared in Examples and Comparative Examples was applied to human nails. The results are shown in Table 2 below.

division adhesive properties
modifier content (wt%) Immediately after manufacturing, adhesion (gf/10mm) Attachment days (days) Example 1-1 oleanolic acid 0.05 775 8 Example 1-2 oleanolic acid 0.1 742 9 Examples 1-3 oleanolic acid 0.2 752 7 Example 2-1 oleic acid 0.1 645 11 Example 2-2 oleic acid 0.5 685 14 Example 2-3 oleic acid 1.0 688 13 Example 2-4 oleic acid 2.0 435 6 Example 2-5 oleic acid 3.0 350 5 Example 3-1 Ethylhexylglycerin 5.0 470 6 Example 3-2 Octanediol 5.0 607 10 Example 3-3 hexanediol 5.0 725 11 Example 3-4 Phenoxyethanol 5.0 762 9 Example 4 salicylic acid 5.0 820 12 Comparative Example 3 - - 1380 10

As can be seen in Table 2, as the content of the adhesive property modifier increases, the adhesive force decreases and the adhesion durability decreases, but it can be seen that this does not correspond to all examples. It was confirmed that the adhesive property modifier does not simply control the adhesive force, but also other complex factors.

Experimental Example 3. Adhesion change test under severe conditions

In order to measure the change in the adhesive strength of the double-sided tapes prepared in Examples 2-2 and 3, the double-sided tapes (PSA) prepared according to Examples 2-2 and 3 were subjected to 180° peel strength. Between the SUS used for measurement, one side was attached and the other side was wrapped with a PET film and tied by strong pressure with a rubber band (FIG. 2), and then stored under the following conditions. In order to secure the pressure-sensitive adhesive stabilization time, the adhesive strength was measured after 3 days of storage, and the final adhesive strength was measured after 4 weeks of storage. The results are shown in Table 3.

- Cycling storage conditions: 1 cycle (8 hours-37 ℃/75% RH+16 hours-32 ℃/40% RH)/day * 4 weeks

Adhesion (gf/10 mm) 3 days later after 4 weeks adhesive strength increase Comparative Example 3 880 1,110 26% Example 2-2 870 990 14%

As can be seen in Table 3, in the case of Example 3 without the addition of the adhesive property control agent, it was confirmed that the adhesive force increased about 2 times than that of Example 2-2, and this increase in adhesive strength was due to an increase in the adhesion durability. It is expected to lead to aggravation of nail or toenail damage.

Experimental Example 4. Damage test for nail stickers

In Experimental Examples 1 to 3, the degree of nail damage was measured for Example 2-2, which showed little change in stability, adhesion durability, and adhesive strength under severe conditions. Nail stickers to which Example 2-2 and Comparative Example 3 were applied were prepared, attached to the nail, detached after 14 days, and the degree of damage to the nail surface before and after attachment was evaluated. The degree of damage was evaluated by qualitative visual evaluation of images taken with a polyscope camera (1.3 million pixels Full HD), and the average nail surface roughness (Ra) and maximum nail surface roughness ( PRIMOS CR (Optical 3D skin measuring system)) Rmax) values were quantitatively measured.

3 is a poliscope camera image of the nail appearance before and after attaching and detaching the nail sticker prepared using the double-sided tape of Example 2-2 and Comparative Example 3. FIG. 4 is a PRIMOS CR photographed image before and after attachment of the nail sticker prepared using the double-sided tape of Example 2-2 and Comparative Example 3; In addition, detailed results are shown in Table 4 below.

average nail surface roughness
(Ra) Maximum roughness of the nail surface (Rmax) Before attachment (%) After desorption (%) Before attachment (%) After desorption (%) Comparative Example 3 100.0 120.0 100.0 121.9 Example 2-2 100.0 111.3 100.0 104.4 Damage difference * -8.7% improvement -17.5% improvement * Based on 100% damage before attachment, the difference in nail surface roughness with increased number of detachments

As can be seen in Table 4, FIGS. 3 and 4, it can be seen that the degree of damage for Example 2-2 compared to Comparative Example 3 is numerically lower. That is, it was found that less damage to the nail surface occurred in the experimental group to which Example 2-2 was attached, and in the experimental group to which Example 2-2 was attached, compared to Comparative Example 3, in the qualitative analysis through the poliscope photographed image, the nail It was further confirmed that less surface damage occurred.

Therefore, the pressure-sensitive adhesive composition of the present invention is stable during the production and storage of the pressure-sensitive adhesive composition, including the adhesive property control agent, and is applied to artificial nails or nail stickers by the adjusted adhesive strength to have excellent adhesion durability, Adhesion is maintained constant even under harsh conditions of high pressure, so it has the effect of mitigating damage to nails or toenails.

The above-described Examples and Comparative Examples are examples for explaining the present invention, and the present invention is not limited thereto. Those of ordinary skill in the art to which the present invention pertains will be able to practice the present invention with various modifications therefrom, so the technical protection scope of the present invention should be defined by the appended claims.

Claims (17)

It includes a pressure-sensitive adhesive (PSA) and an adhesive property control agent,
The pressure-sensitive adhesive composition wherein the pressure-sensitive adhesive composition is any one or a mixture of two or more selected from natural extracts, antibacterial and antiseptic materials and keratin solubilizers.
According to claim 1,
The pressure-sensitive adhesive polymer is selected from an acrylic monomer to which an alkyl group having 1 to 18 carbon atoms is added, acrylic acid to which an alkyl group having 1 to 18 carbon atoms is added, methacrylic acid to which an alkyl group having 1 to 18 carbon atoms is added, and an acrylic monomer to which a hydroxyl group is added. A pressure-sensitive adhesive composition in which any one or a mixture of two or more is a polymerized acrylate polymer.
According to claim 1,
The natural extract is any one or a mixture of two or more selected from oleanolic acid, oleic acid, rosmarinic acid, pterostilbene and ximenynic acid. .

According to claim 1,
The antibacterial and antiseptic material is ethylhexylglycerin, hydroxyacetophenone, octanediol, 1,2-octanediol, hexanediol, 1,2-hexanediol, phenoxyethanol, chlorphenesin (chlorphenesin) and benzyl alcohol (benzyl alcohol) any one or a mixture of two or more pressure-sensitive adhesive composition.
According to claim 1,
The pressure-sensitive adhesive composition wherein the keratin dissolving agent is any one or a mixture of two or more selected from urea, lactic acid, glycolic acid, and salicylic acid.
According to claim 1,
The pressure-sensitive adhesive composition wherein the pressure-sensitive adhesive composition is any one or a mixture of two or more selected from oleanolic acid, oleic acid, ethylhexylglycerin, octanediol, hexanediol, phenoxyethanol and salicylic acid.
According to claim 1,
The adhesive property control agent is oleanolic acid,
The pressure-sensitive adhesive composition, wherein the oleanolic acid is contained in an amount of 0.05 to 0.2% by weight based on the weight of the pressure-sensitive adhesive composition.
According to claim 1,
The adhesive property control agent is oleic acid,
The pressure-sensitive adhesive composition, wherein the oleic acid is contained in 0.1 to 3.0% by weight based on the weight of the pressure-sensitive adhesive composition.
According to claim 1,
The adhesive physical property control agent is ethylhexyl glycerin,
The ethylhexyl glycerin is contained in an amount of 1.0 to 5.0% by weight based on the weight of the pressure-sensitive adhesive composition.
According to claim 1,
The adhesive property control agent is octanediol,
The pressure-sensitive adhesive composition, wherein the octanediol is contained in an amount of 1.0 to 5.0% by weight based on the weight of the pressure-sensitive adhesive composition.
According to claim 1,
The adhesive property control agent is hexanediol,
The hexanediol is contained in an amount of 1.0 to 5.0% by weight based on the weight of the pressure-sensitive adhesive composition.
According to claim 1,
The adhesive property control agent is phenoxyethanol,
The pressure-sensitive adhesive composition, wherein the phenoxyethanol is contained in an amount of 1.0 to 5.0% by weight based on the weight of the pressure-sensitive adhesive composition.
According to claim 1,
The adhesive property modifier is salicylic acid,
The salicylic acid is contained in an amount of 1.0 to 5.0% by weight based on the weight of the pressure-sensitive adhesive composition.
According to claim 1,
The pressure-sensitive adhesive composition is a pressure-sensitive adhesive composition having a 180° peel strength of 500 to 1200 gf/10 mm measured according to ASTM D903 of the tape coated with the pressure-sensitive adhesive composition.
A pressure-sensitive adhesive comprising the pressure-sensitive adhesive composition according to any one of claims 1 to 14.
A pressure-sensitive adhesive layer comprising the pressure-sensitive adhesive of claim 15; and
Artificial nail including; artificial nail body attached to one surface of the adhesive layer.
A pressure-sensitive adhesive layer comprising the pressure-sensitive adhesive of claim 15; and
A nail sticker comprising a; a film attached to one surface of the adhesive layer.

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