JP2012239499A - Antibacterial artificial nail, artificial nail composition, artificial nail wearing kit, and method for wearing the artificial nail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antibacterial artificial nail, an artificial nail composition, an artificial nail wearing kit, and a method for wearing the artificial nail, allowing maintenance of cleanliness after worn while efficiently decomposing and removing bacteria, viruses, germs, or the like causing an infectious disease having stuck to the artificial nail or the surface of one's own nail and achieving continuous infection prevention even after the wearing.SOLUTION: The antibacterial artificial nail includes photocatalyst powder containing apatite having at least photocatalyst activity, and a base material.

Description

  The present invention relates to an antibacterial artificial nail, an artificial nail composition, an artificial nail attachment kit, and an artificial nail attachment method.

  Artificial nails have been practiced as one of plastic surgery treatments such as fingertip defects mainly in the medical field, but in recent years, they have spread to a wide range of age groups as one of the facts of nail art. Until now, people who have medical knowledge at nail salons have practiced hygiene management properly, but because it is expensive, kits for enjoying nail art by yourself are sold, for sloppy hygiene management Occurrence of health-related problems such as “molds on nails” and “adhesives accidentally attached to the skin and burns” were reported, and the National Life Center called for attention in October 2008. The Ministry of Health, Labor and Welfare issued “Guidelines on Hygiene Management in Nail Salons” (Non-Patent Document 1) in September 2010. Especially for the problem of what is called “nail mold”, the main causes are Pseudomonas aeruginosa and ringworm. Pseudomonas aeruginosa is normally present in the living environment as a resident microorganism. Therefore, no matter how hygienic it is when attaching or performing artificial nail treatment, if the artificial nail floats over the artificial nail after a few days (even if the artificial nail peels even slightly from its own nail), it is unfortunately there. There is a possibility that bacteria may enter. If left as it is, Pseudomonas aeruginosa begins to reproduce if there are moisture and trace nutrients (such as dirt). Nail mold caused by ringworm is also called nail fungus and is the same source of athlete's foot on the toes.

  Therefore, the artificial nail is attached while efficiently decomposing and removing bacteria, viruses, bacteria, etc. that cause infections on the artificial nail and the surface of the self nail, and continuous infection prevention is realized after wearing. In order to maintain cleanliness, antibacterial artificial nails and their mounting methods are currently required.

"Guidelines on hygiene management in nail salon" Health 0915 No. 4 (September 15, 2010)

  An object of the present invention is to solve the conventional problems and achieve the following objects. That is, the present invention attaches the artificial nail while efficiently decomposing and removing bacteria, viruses, bacteria, etc. that cause infections attached to the surface of the artificial nail or the self-nail, and continuously infects after the attachment. An object of the present invention is to provide an antibacterial artificial nail, an artificial nail composition, an artificial nail attachment kit, and an artificial nail attachment method capable of realizing prevention and maintaining cleanliness.

Means for solving the above-described problems are as described in the following supplementary notes. That is,
The disclosed antibacterial artificial nail includes a photocatalyst powder containing at least apatite having photocatalytic activity, and a base material.
The disclosed artificial nail composition includes at least a photocatalyst powder containing apatite having photocatalytic activity, an ultraviolet curable compound, a photopolymerization initiator, and a solvent.
The disclosed artificial nail composition includes at least a photocatalyst powder containing apatite having photocatalytic activity, a film forming agent, and a solvent.
The disclosed artificial nail attachment kit includes the disclosed antibacterial artificial nail and the disclosed artificial nail composition.
The disclosed artificial nail attachment method includes a step of installing the antibacterial artificial nail on a coating film coated with the artificial nail composition, and a step of curing the artificial nail composition by irradiating ultraviolet rays.
The disclosed artificial nail attachment method includes a step of forming an artificial nail by irradiating the coating film coated with the artificial nail composition by irradiating with ultraviolet rays.

According to the disclosed antibacterial artificial nail, the artificial nail is worn while effectively decomposing and removing bacteria, viruses and bacteria that cause infections attached to the surface of the artificial nail and the self-nail, and continues even after wearing. Can prevent infection and maintain cleanliness.
According to the disclosed artificial nail composition, the artificial nail is worn while effectively decomposing and removing bacteria, viruses, bacteria, and the like that cause infections attached to the artificial nail and the surface of the nail, and Realizing continuous infection prevention and maintaining cleanliness.
According to the disclosed artificial nail attachment kit, the artificial nail is attached while effectively decomposing and removing bacteria, viruses, bacteria, etc. that cause infections attached to the artificial nail and the surface of the self nail, and after the attachment. Realizing continuous infection prevention and maintaining cleanliness.
According to the disclosed artificial nail attachment method, the artificial nail is attached while efficiently decomposing and removing bacteria, viruses, bacteria, etc. that cause infections attached to the artificial nail or the surface of the self nail Can achieve continuous infection prevention and maintain cleanliness.

FIG. 1 is an electron micrograph of photocatalytic titanium apatite which is an example of apatite having photocatalytic activity. FIG. 2 is a graph showing the results of the antifungal test of Example 4 and Comparative Example 1. FIG. 3 is a graph showing the results of the Pseudomonas aeruginosa antibacterial test of Example 4 and Comparative Example 1.

(Antibacterial artificial nail)
The antibacterial artificial nail of the present invention includes at least a photocatalytic powder and a base material, and further includes other configurations as necessary.
As an aspect, an aspect in which the photocatalyst powder is uniformly dispersed in the base material is preferable, and as another aspect, an aspect in which the photocatalyst powder is uniformly applied to the surface of the base material is preferable.
The antibacterial artificial nail in which the photocatalyst powder is uniformly applied to the surface of the substrate may be one in which an artificial nail composition described later is uniformly applied to the surface of the substrate.
The antibacterial artificial nail can be used as an artificial nail such as a nail chip or a full well.
Hereinafter, the antibacterial artificial nail of the present invention will be described in detail.

<Photocatalyst powder>
The photocatalyst powder is not particularly limited as long as it contains apatite having photocatalytic activity, and can be appropriately selected according to the purpose.
The form of the photocatalyst powder is not particularly limited as long as it is a powder from the viewpoint of excellent contact efficiency with microorganisms such as bacteria, and the shape, size, specific gravity and the like can be appropriately selected.
Moreover, it is preferable that the photocatalyst powder further has a concavo-convex shape on the surface, for example, has a rugged shape. In this case, the surface area that functions as the photocatalyst is expanded, and the contact efficiency with the microorganism is further improved.
The size of the photocatalyst powder is not particularly limited and can be appropriately selected according to the type and size of microorganisms for the purpose of decomposition and removal. The volume-average particle diameter is preferably 100 μm or less, and can be dispersed in an artificial nail composition to be described later, in that the contact efficiency can be improved and whitening of the surface of the artificial nail can be effectively suppressed. Sometimes, the photocatalyst powder is more preferably 10 μm or less from the viewpoint that the photocatalyst powder does not precipitate and can maintain a dispersed state. The lower limit of the volume average particle diameter is preferably 50 nm or more because the size of the primary particles is generally about 50 nm, and it is difficult to produce a photocatalyst powder smaller than this at present. .
When the volume average particle diameter exceeds 100 μm, the surface area of the photocatalyst powder cannot be increased so much that the contact with microorganisms may be reduced, or the surface of the artificial nail may be whitened. The volume average particle size can be measured by, for example, a particle size distribution measuring device, and an example of the particle size distribution measuring device is a SALD-2100 laser analysis type flow distribution measuring device manufactured by Shimadzu Corporation. It is mentioned in.
There is no restriction | limiting in particular as specific gravity of the said photocatalyst powder, Although it can select suitably according to the objective, It is so preferable that it is small and it is preferable that it can disperse | distribute uniformly in the artificial nail composition mentioned later.
The particle size distribution (particle size distribution) of the photocatalyst powder is not particularly limited and may be appropriately selected depending on the purpose. For example, the sharper (narrower) the particle size distribution, Can be uniformly dispersed in the water.

The specific material or composition of the photocatalyst powder is not particularly limited as long as it contains apatite having photocatalytic activity, and can be appropriately selected according to the purpose. When the photocatalyst powder is apatite having photocatalytic activity, it is advantageous in that it has excellent adsorption characteristics for microorganisms such as bacteria attached to the artificial nail or the artificial nail composition due to the excellent adsorption characteristics of the apatite. Also, the photocatalytic activity (photocatalytic activity) is advantageous in that the adsorbed microorganism can be efficiently decomposed and removed by the photocatalytic activity.
Among these photocatalyst powders, those containing at least apatite having photocatalytic activity and ultraviolet light absorbing metal atoms are preferred, and those containing visible light absorbing metal atoms are more preferred. When the ultraviolet light absorbing metal atom is contained, it is advantageous in terms of being suitable for use under ultraviolet light irradiation conditions, and the photocatalyst powder further comprises the visible light absorbing metal atom. Is advantageous in that it is suitable for use under daily use conditions such as under a fluorescent lamp.
In addition, the said photocatalyst powder may be used individually by 1 type, and may use 2 or more types together.

-Apatite with photocatalytic activity-
The apatite having photocatalytic activity is not particularly limited as long as it has photocatalytic activity (photocatalytic activity), and can be appropriately selected according to the purpose. For example, the metal atom necessary for apatite to have photocatalytic activity is used. Preferred examples include those having (hereinafter, sometimes referred to as a metal atom capable of exhibiting photocatalytic activity). When the apatite has a metal atom having the photocatalytic activity, when the apatite is irradiated with light, the photocatalytic activity is expressed in the apatite by the action of the metal atom having the photocatalytic activity, and adsorbs on the surface of the apatite. Electrons can be taken away from microorganisms (degradation target) such as the bacteria, and the microorganisms can be oxidized and decomposed.

-Apatite-
There is no restriction | limiting in particular as said apatite, It can select suitably from well-known things, For example, what is represented by following General formula (1) etc. is mentioned suitably.

In the general formula (1), A represents a metal atom, and the metal atom is not particularly limited and may be appropriately selected depending on the purpose. For example, calcium (Ca), aluminum (Al), Lanthanum (La), magnesium (Mg), strontium (Sr), barium (Ba), lead (Pb), cadmium (Cd), europium (Eu), yttrium (Y), cerium (Ce), sodium (Na), Potassium (K) etc. are mentioned. Among these, calcium (Ca) is particularly preferable in terms of adsorptivity.
B represents either a phosphorus atom (P) or a sulfur atom (S), and among these, a phosphorus atom (P) is preferable in terms of biocompatibility.
O represents an oxygen atom.
X represents one of a hydroxyl group (OH), CO ₃ , and a halogen atom, and among these, the hydroxyl group (OH) is capable of forming a metal oxide type photocatalytic partial structure together with the metal atom of A. Is particularly preferred. In addition, as said halogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom etc. are mentioned, for example.
m, n, z, and s represent integers. For example, in terms of charge balance, m is preferably 8 to 10, n is preferably 3 to 4, z is preferably 5 to 7, and s is 1 to 1. 4 is preferred.

Examples of the apatite represented by the general formula (1) include hydroxyapatite, fluoroapatite, or chloroapatite, or metal salts thereof, tricalcium phosphate, calcium hydrogen phosphate, and the like. Among these, hydroxyapatite in which X in the general formula (1) is a hydroxyl group (OH) is preferable, A in the general formula (1) is calcium (Ca), and B is a phosphorus atom (P). Calcium hydroxyapatite (CaHAP) in which X is a hydroxyl group (OH), that is, Ca ₁₀ (PO ₄ ) ₆ (OH) ₂ is particularly preferred.

  The calcium hydroxyapatite (CaHAP) easily exchanges ions with respect to cations and anions, so that it has excellent adsorption characteristics for various decomposition targets, especially adsorption characteristics for organic substances such as proteins. Thus, the present invention is preferable in that it has excellent adsorption characteristics for microorganisms such as bacteria, viruses, molds, and bacteria, which are decomposition targets in the present invention, and can prevent or suppress their growth.

The microorganism to be decomposed is not particularly limited and may be either a prokaryotic organism or a eukaryotic organism, and includes protozoa. Examples of the prokaryotic organism include, for example, ringworm, green Examples include bacteria such as Pseudomonas aeruginosa, Escherichia coli, and Staphylococcus aureus, and examples of the eukaryote include filamentous fungi such as yeasts, molds, and actinomycetes. Examples of the virus include DNA viruses and RNA viruses, and specific examples include influenza viruses.
Examples of other decomposition objects other than the microorganisms include proteins, amino acids, lipids, and carbohydrates.
The decomposition target object may contain one of these alone or two or more of them. Specific examples of the decomposition target include dirt components derived from human skin, dust, dust, sludge, unnecessary components, waste liquid components, harmful components in soil or air, and sludge. Examples of the harmful substance include acetaldehyde gas.

There is no restriction | limiting in particular as content in the said photocatalyst powder of the said apatite, According to the objective, it can select suitably, For example, 85 mol%-97 mol% are preferable, and 85 mol%-90 mol% are more preferable.
If the content of the apatite is less than 85 mol%, the photocatalytic activity of the photocatalyst powder may not be sufficient, and if it exceeds 97 mol%, an effect commensurate with it cannot be obtained. Adsorption characteristics, light absorption characteristics, etc. with respect to the decomposition target object may deteriorate.
The content of the apatite in the photocatalyst powder can be measured by, for example, quantitative analysis using ICP-AES.

--Metal atom imparting photocatalytic activity--
The metal atom imparting the photocatalytic activity is not particularly limited as long as it can function as a photocatalytic center, and can be appropriately selected from those known to impart photocatalytic activity depending on the purpose. In terms of excellent activity, at least one selected from titanium (Ti), zinc (Zn), manganese (Mn), tin (Sn), indium (In), iron (Fe), and the like is preferably used. Among these, titanium (Ti) is particularly preferable from the viewpoint of excellent photocatalytic activity (photocatalytic activity).

There is no restriction | limiting in particular as content in the said photocatalyst powder of the metal atom which provides the said photocatalytic activity, According to the objective, it can select suitably, For example, 5 mol% with respect to all the metal atoms in the said photocatalyst powder. -15 mol% is preferable and 8 mol%-12 mol% are more preferable.
When the content of the metal atom imparting the photocatalytic activity is less than 5 mol%, the photocatalytic activity of the photocatalyst powder may not be sufficient, and even if it exceeds 15 mol%, an effect commensurate with it may not be obtained. The adsorption characteristics and light absorption characteristics of the photocatalyst powder with respect to the decomposition target object may be deteriorated.
In addition, content in the said photocatalyst powder of the metal atom which provides the said photocatalytic activity can be measured by performing the quantitative analysis by ICP-AES, for example.

When the metal atom imparting the photocatalytic activity is incorporated (substituted) into the crystal structure of the apatite as part of the metal atom constituting the crystal structure of the apatite, the physical properties of the apatite are the same as those of titanium oxide. It changes to an optical semiconductor material.
The apatite having such photocatalytic properties is superior in adsorption properties, and more excellent in adsorption properties with respect to an object to be decomposed than known metal oxides having photocatalytic activity. Excellent in inhibiting or inhibiting the growth of bacteria and the like.

As the apatite having photocatalytic activity, an appropriately synthesized product or a commercially available product may be used.
The method for synthesizing the apatite having photocatalytic activity is not particularly limited and may be appropriately selected depending on the purpose, and a known coprecipitation method is preferably exemplified. In the case of apatite, it can be synthesized as follows. That is, first, calcium nitrate containing calcium atoms (Ca), which is a raw material of apatite, is dissolved in decarbonized gas-treated pure water and stirred using a magnetic stirrer or the like. A phosphoric acid aqueous solution containing (P) is dropped. Next, ammonia water or the like is added to adjust the pH to 9, followed by aging at 100 ° C. for 5 hours, filtration, washing with pure water, and drying.
As a commercial item of the apatite having the photocatalytic activity, for example, the trade name “PCAP-100” manufactured by Taihei Chemical Industry Co., Ltd. is preferably used for the calcium / titanium hydroxyapatite.

-Ultraviolet light absorbing metal atom-
The ultraviolet light-absorbing metal atom is at least one of tungsten (W) and vanadium (V), and these may be contained alone or in combination of two or more in the photocatalyst powder. It may be included.
The content of the ultraviolet light absorbing metal atom is preferably 0.001 mol% to 0.1 mol% with respect to all metal atoms.
If the content of the ultraviolet light-absorbing metal atom is less than 0.001 mol%, the photocatalyst powder may not have sufficient absorption capacity for ultraviolet light, and even if the content exceeds 0.1 mol%, an effect commensurate with it. In some cases, the adsorption performance of the photocatalyst powder with respect to the decomposition target may be reduced, or the ability to absorb visible light may be reduced.
In addition, content in the said photocatalyst powder of the said ultraviolet light absorptive metal atom can be measured by performing the quantitative analysis by ICP-AES, for example.

-Visible light absorbing metal atom-
The visible light-absorbing metal atom is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include those having absorption with respect to light having a wavelength of more than 400 nm. Is more preferably at least one selected from chromium (Cr) and nickel (Ni), and chromium (Cr) is particularly preferable in terms of excellent visible light absorption characteristics.
There is no restriction | limiting in particular as content in the said photocatalyst powder of the said visible light absorptive metal atom, According to the objective, it can select suitably, For example, 0.001 mol%-1 mol% are with respect to all the metal atoms. Preferably, 0.01 mol% to 1 mol% is more preferable.
If the content of the visible light absorbing metal atom is less than 0.001 mol%, the photocatalyst powder may not have sufficient ability to absorb visible light, and even if it exceeds 1 mol%, an effect commensurate with it is obtained. However, the adsorption performance of the photocatalyst powder to the decomposition target may be reduced, or the ultraviolet light absorption ability may be reduced.
In addition, content in the said photocatalyst powder of the said visible light absorptive metal atom can be measured by performing the quantitative analysis by ICP-AES, for example.

In the photocatalyst powder of the present invention, the total content of the metal atom necessary for having the photocatalytic activity, the ultraviolet light absorbing metal atom, and the visible light absorbing metal atom is particularly limited. However, for example, 15 mol% or less is preferable, and 3 mol% to 15 mol% is more preferable.
Even if the total content exceeds 15 mol%, a photocatalytic activity improvement effect commensurate with it cannot be obtained, and the photocatalytic activity may be lowered instead.

As a preferred specific example of the photocatalyst powder of the present invention, the metal atom imparting the photocatalytic activity is titanium (Ti), and the apatite is calcium hydroxyapatite (CaHAP): Ca ₁₀ (PO ₄ ) ₆ (OH). ₂ , the ultraviolet light absorbing metal atom is at least one of tungsten (W) and vanadium (V), and the visible light absorbing metal atom is chromium (Cr).
Such a photocatalyst powder can absorb not only visible light but also ultraviolet light, exhibits a broad light absorption, is excellent in light utilization efficiency, and can be suitably used for applications under various light irradiation conditions. is there. The photocatalytic powder does not saturate the photocatalytic activity when irradiated with either visible light or ultraviolet light, and exhibits excellent photocatalytic activity over a long period of time, particularly when irradiated with ultraviolet light over a long period of time. Is advantageous in that the photocatalytic activity is not saturated and an excellent photocatalytic activity can be maintained.

<Base material>
The base material is not particularly limited as long as it forms a nail shape and forms an artificial nail, and can be appropriately selected according to the purpose.
There is no restriction | limiting in particular as a material of the said base material, According to the objective, it can select suitably, For example, a thermoplastic resin, a thermosetting resin, an ultraviolet curable resin etc. are mentioned. Specific examples thereof include acrylic resin, acrylonitrile-butadiene-styrene copolymer resin (ABS resin), nylon resin, and the like. Among these, an acrylic resin is preferable from the viewpoints of moldability and transparency.

(Artificial nail composition)
The artificial nail composition of the present invention includes at least the photocatalyst powder, an ultraviolet curable compound, a photopolymerization initiator, and a solvent, and further includes an ultraviolet curable type containing other components such as a colorant as necessary. An artificial nail composition is an embodiment.
The artificial nail composition of the present invention is a nail lacquer type containing at least the photocatalyst powder, a film-forming agent, a plasticizer, and a solvent, and further containing other components such as a colorant as necessary. One embodiment is an artificial nail composition. The nail lacquer type artificial nail composition can be used as a base coat and a top coat in addition to the nail lacquer.

(UV curable artificial nail composition)
<Photocatalyst powder>
As the photocatalyst powder in the artificial nail composition, the photocatalyst powder in the antibacterial artificial nail described above can be used, and the preferred embodiment is also the same.
The content of the photocatalyst powder in the artificial nail composition is not particularly limited as long as the photocatalytic activity of the apatite having photocatalytic activity functions, and can be appropriately selected according to the purpose. % To 20% by mass is preferable, and 1% to 15% by mass is more preferable.

<Ultraviolet curable compound>
The ultraviolet curable compound is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include conjugated diene monomers such as butadiene and isoprene; aromatics such as styrene, α-methylstyrene and chlorostyrene. Vinyl cyanides such as acrylonitrile and methacrylonitrile; vinyl halides and vinylidenes such as vinyl chloride, vinyl bromide, vinylidene chloride and vinylidene bromide; vinyl acetate and vinyl propionate Vinyl esters such as: (meth) acrylic acid listed below (hereinafter referred to as the generic name of acrylic acid and methacrylic acid) esters; polymerizable monomer having at least one carboxyl group in one molecule A polymerizable monomer having at least one phosphate group or sulfone group in one molecule And the like.

  The (meth) acrylic acid esters are not particularly limited and may be appropriately selected depending on the purpose. For example, methyl (meth) acrylate, ethyl (meth) acrylate, n of (meth) acrylic acid -Or i-propyl ester, branched alkyl (meth) acrylate with linear or C1-C4 alkyl such as n- or i- or t-butyl ester of (meth) acrylic acid; (meth) acrylic acid 2-ethylhexyl, Benzyl (meth) acrylate, methoxyethyl (meth) acrylate, glycidyl (meth) acrylate, methylol (meth) acrylamide, N, N-dimethylaminoethyl (meth) acrylate, N, N- (meth) acrylate Diethylaminoethyl, 2-hydroxyethyl (meth) acrylate, (meth) acrylic acid 2 or 3-hydroxy Lopyl, (meth) acrylic acid 2 or 3-methoxypropyl, glycerol mono (meth) acrylate, diethylene glycol mono (meth) acrylate, methoxydiethylene glycol mono (meth) acrylate, triethylene glycol mono (meth) acrylate, methoxytriethylene glycol mono (Meth) acrylate, pentaethylene glycol mono (meth) acrylate, methoxypentaethylene glycol mono (meth) acrylate, polyethylene glycol mono (meth) acrylate, methoxypolyethylene glycol mono (meth) acrylate, 2-hydroxy-3-phenoxypropyl ( (Meth) acrylate, tetrahydrofurfuryl (meth) acrylate, neopentyl glycol di (meth) acrylate, trimethyl Aliphatic esters such as propane propane tri (meth) acrylate; 2-hydroxyethyl (meth) acrylate, 2 or 3-hydroxypropyl (meth) acrylate, glycerol mono (meth) acrylate, diethylene glycol mono (meth) acrylate, triethylene glycol mono Monofunctional (meth) acrylates such as (meth) acrylate, pentaethylene glycol mono (meth) acrylate, polyethylene glycol mono (meth) acrylate, 2-hydroxy-3-phenoxypropyl (meth) acrylate, methylol (meth) acrylamide or ( (Meth) acrylic acid amides Hydroxyl-containing (meth) acrylates such as an adduct of 1 mol of bisphenol A and 2 mol of glycidyl (meth) acrylate; ethylene glycol Di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, pentaethylene glycol di (meth) acrylate, nonaethylene glycol di (meth) acrylate, tetradecaethylene glycol di (meth) acrylate, etc. Polyethylene glycol di (meth) acrylates; polypropylene glycol di (meth) acrylates such as propylene glycol di (meth) acrylate, dipropylene glycol di (meth) acrylate, tripropylene glycol di (meth) acrylate, and nonapropylene glycol di (meth) acrylate (Meth) acrylates; one of the above polyethylene glycol di (meth) acrylates and polypropylene glycol di (meth) acrylates Mono (meth) acrylates in which the (meth) acryloyl group is substituted with a methyl group or an ethyl group; butylene glycol di (meth) acrylate, propanediol di (meth) acrylate, hexanediol di (meth) acrylate, 2- (Meth) acryloyloxyethyl isocyanate or 2,2,4-trimethylhexamethylene diisocyanate or 1,3,5-trimethylhexamethylene diisocyanate and an adduct of 2-hydroxyethyl (meth) acrylate and other urethane bonds (meth) Acrylates: 2,2-bis (4- (meth) acryloyloxypolyethoxyphenyl) propanes obtained by further condensing (meth) acrylic acid to a product obtained by adding oxyethylene to bisphenol A, and the like.

  The polymerizable monomer having at least one carboxyl group in one molecule is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include monocarboxylic acids, dicarboxylic acids, tricarboxylic acids, and tetracarboxylic acids. Carboxylic acid or derivatives thereof are mentioned. For example, (meth) acrylic acid, maleic acid, p-vinylbenzoic acid, 11- (meth) acryloyloxy-1,1-undecanedicarboxylic acid (MAC-10), 1,4-di (meth) acryloyloxyethyl pyromerit Acid, 6- (meth) acryloyloxyethylnaphthalene-1,2,6-tricarboxylic acid, 4- (meth) acryloyloxymethyl trimellitic acid and its anhydride, 4- (meth) acryloyloxyethyl trimellitic acid and its Anhydride, 4- (meth) acryloyloxybutyl trimellitic acid and its anhydride, 4- [2-hydroxy-3- (meth) acryloyloxy] butyl trimellitic acid and its anhydride, 2,3-bis (3 , 4-Dicarboxybenzoyloxy) propyl (meth) acrylate, N, O-di (meth) acrylate Royloxytyrosine, O- (meth) acryloyloxytyrosine, N- (meth) acryloyloxytyrosine, N- (meth) acryloyloxyphenylalanine, N- (meth) acryloyl p-aminobenzoic acid, N- (meth) acryloyl- O-aminobenzoic acid, N- (meth) acryloyl 5-aminosalicylic acid, N- (meth) acryloyl 4-aminosalicylic acid, 2 or 3 or 4- (meth) acryloyloxybenzoic acid, 2-hydroxyethyl (meth) acrylate And pyromellitic dianhydride addition product (PMDM), 2-hydroxyethyl (meth) acrylate and maleic anhydride or 3,3 ′, 4,4′-benzophenone tetracarboxylic dianhydride (BTDA) or 3 , 3 ', 4,4'-biphenyltetracarboxylic dianhydride Addition product, 2- (3,4-dicarboxybenzoyloxy) 1,3-di (meth) acryloyloxypropane, N-phenylglycine or N-tolylglycine and glycidyl (meth) acrylate adduct, 4- [(2-hydroxy-3- (meth) acryloyloxypropyl) amino] phthalic acid, 3 or 4- [N-methyl N- (2-hydroxy-3- (meth) acryloyloxypropyl) amino] phthalic acid, etc. Can be mentioned.

  The polymerizable monomer having at least one phosphate group or sulfone group in one molecule is not particularly limited and may be appropriately selected depending on the intended purpose. For example, 2- (meth) acryloyloxy Ethyl acid phosphate, 2 and 3- (meth) acryloyloxypropyl acid phosphate, 4- (meth) acryloyloxybutyl acid phosphate, 6- (meth) acryloyloxyhexyl acid phosphate, 8- (meth) acryloyloxyoctyl acid phosphate, 10- (meth) acryloyloxydecyl acid phosphate, 12- (meth) acryloyl oxide decyl acid phosphate, bis {2- (meth) acryloyloxyethyl} acid phosphate, bis {2 or 3- (meth) acryloyloxypropyl Acid phosphate, 2- (meth) acryloyloxyethyl phenyl acid phosphate, and 2 (meth) acryloyloxyethyl p- methoxyphenyl acid phosphate and the like. In addition, the phosphate group in these compounds can be replaced with a thiophosphate group. Among these, 2- (meth) acryloyloxyethyl phenyl acid phosphate, 10- (meth) acryloyloxydecyl acid phosphate, 2-sulfoethyl (meth) acrylate, 2 or 1-sulfo-1 or 2-propyl (meth) acrylate, 1 or 3-sulfo-2-butyl (meth) acrylate, 3-bromo-2-sulfo-2-propyl (meth) acrylate, 3-methoxy-1-sulfo-2-propyl (meth) acrylate, 1,1- Examples thereof include dimethyl-2-sulfoethyl (meth) acrylamide.

  There is no restriction | limiting in particular as content in the artificial nail composition of the said ultraviolet curable compound, Although it can select suitably according to the objective, 1 mass%-99 mass% are preferable.

<Photopolymerization initiator>
There is no restriction | limiting in particular as said photoinitiator, According to the objective, it can select suitably, For example, diacetyl peroxide, dipropyl peroxide, dibutyl peroxide, dilauryl peroxide, benzoyl peroxide (BPO), p, p '-Dichlorobenzoyl peroxide, p. organic peroxides such as p'-dimethoxybenzoyl peroxide, p, p'-dimethylbenzoyl peroxide, p, p'-dinitrodibenzoyl peroxide; organoboron compounds such as trialkylborane or partial oxides of trialkylborane, etc. Can be mentioned.
There is no restriction | limiting in particular as content of the said photoinitiator, According to the objective, it can select suitably, Usually, 0.01 mass part-10 mass parts with respect to 100 mass parts of said ultraviolet curable compounds. is there.

<Solvent>
There is no restriction | limiting in particular as a solvent used for the said ultraviolet curable artificial nail composition, According to the objective, it can select suitably, For example, water; Water-soluble organic solvents, such as acetone and ethanol, etc. are mentioned.
There is no restriction | limiting in particular as content in the said ultraviolet curable artificial nail composition of the said solvent, Although it can select suitably according to the objective, 5 mass%-95 mass% are preferable.

(Nail lacquer type artificial nail composition)
<Film-forming agent>
The film forming agent is not particularly limited as long as the film is formed after the solvent evaporates, and can be appropriately selected according to the purpose. For example, nitrocellulose, alkyd resin, acrylic resin, A polyester resin, a polyurethane resin, etc. are mentioned.

<Organic solvent>
The organic solvent used in the nail lacquer type artificial nail composition is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include ethyl acetate, butyl acetate, acetone, methyl ethyl ketone, isopropanol, and butanol. It is done. These may be used individually by 1 type, may use 2 or more types together, and may contain the diluent.
Examples of the diluent include toluene, xylene, aliphatic hydrocarbons, and the like.

<Other ingredients>
Examples of other components contained in the artificial nail composition include a colorant and a plasticizer, a filler, a discoloration preventing agent, and the like.
<< Colorant >>
There is no restriction | limiting in particular as said colorant, According to the objective, it can select suitably, For example, an inorganic pigment, an organic pigment, dye, etc. are mentioned.

<< Plasticizer >>
There is no restriction | limiting in particular as said plasticizer, According to the objective, it can select suitably, For example, camphor, a phthalate ester, etc. are mentioned.

<< Filler >>
There is no restriction | limiting in particular as said filler, According to the objective, a well-known filler can be selected suitably, For example, an organic filler, an inorganic filler, the organic composite filler containing both, etc. are mentioned.

  The organic filler is not particularly limited and may be appropriately selected depending on the intended purpose. For example, methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate alone Soluble high molecular weight polymers such as polymers and copolymers; polymers obtained by copolymerizing these high molecular weight polymers with 5% by mass or less of ethylene glycol di (meth) acrylate as a crosslinking agent; polyvinyl acetate, polyethylene Examples include glycol (PEG), polypropylene glycol (PPG), and polyvinyl alcohol (PVA).

  The inorganic filler is not particularly limited and may be appropriately selected depending on the intended purpose.For example, amorphous silica, alumina, quartz, alumina quartz, silica-alumina compound, silica-zirconia compound, silica-titania compound, Examples thereof include titanium oxide, glass (including barium glass), zirconium oxide, calcium carbonate, kaolin, clay, mica, aluminum sulfate, barium sulfate, calcium sulfate, calcium phosphate, and hydroxyapatite. These inorganic fillers may be surface-treated with a silane coupling agent or a titanate coupling agent in advance.

  There is no restriction | limiting in particular as said organic composite filler, According to the objective, it can select suitably, For example, the filler obtained by superposing | polymerizing and coat | covering the surface of the inorganic filler mentioned above with a polymerizable monomer, and pulverizing Is mentioned. Specifically, among inorganic fillers, fine powdered silica is polymer-coated with a polymerizable monomer mainly composed of trimethylolpropane tri (meth) acrylate (TMPT), and a filler obtained by pulverizing the obtained polymer ( TMPT · f). Moreover, the filler etc. which are obtained by adding and disperse | distributing an inorganic filler, such as a silica and a zirconium oxide, in solutions, such as acetone which melt | dissolved PMMA, distilling a solvent off, drying, etc. are mentioned.

(Artificial nail wearing kit)
The artificial nail mounting kit of the present invention includes an antibacterial artificial nail and an artificial nail composition, and further includes other members appropriately selected as necessary.
The antibacterial artificial nail is the antibacterial artificial nail of the present invention.
The artificial nail composition is the artificial nail composition of the present invention.

(How to wear artificial nails)
The artificial nail wearing method of the present invention includes, as one aspect, a step of installing an antibacterial artificial nail on a coating film coated with at least the artificial nail composition, a step of curing the artificial nail composition by irradiating ultraviolet rays In addition, other steps are included as necessary.
The artificial nail composition is the artificial nail composition (ultraviolet curable artificial nail composition) of the present invention.
The antibacterial artificial nail is the antibacterial artificial nail of the present invention.
The application target for applying the artificial nail composition is not particularly limited and may be appropriately selected according to the purpose. Examples thereof include a self nail; an artificial nail such as a chip nail and a full well; and the artificial nail composition of the present invention. Such as things.
The artificial nail attachment method of the present invention preferably further includes a step of applying the artificial nail composition to the own nail, a step of applying the artificial nail composition to the own nail, and applying the artificial nail composition It is preferable to include a step of installing the antibacterial artificial nail on the coated film and a step of curing the artificial nail composition by irradiating ultraviolet rays.

The artificial nail wearing method of the present invention includes, as another aspect, a step of forming an artificial nail by curing an application film coated with the artificial nail composition by irradiating with ultraviolet rays. Process.
The artificial nail composition is the artificial nail composition (ultraviolet curable artificial nail composition) of the present invention.
The application target for applying the artificial nail composition is not particularly limited and may be appropriately selected according to the purpose. Examples thereof include a self nail; an artificial nail such as a chip nail and a full well; and the artificial nail composition of the present invention. Such as things.
The artificial nail attachment method of the present invention preferably further includes a step of applying the artificial nail composition to the own nail, a step of applying the artificial nail composition to the own nail, and curing by irradiation with ultraviolet rays. It is preferable to include a step of forming an artificial nail.

  Examples of the ultraviolet curing light source in the present invention include sunlight, a halogen lamp, a xenon lamp, a plasma arc lamp, and a light emitting diode (LED). Among these, a light emitting diode having a radiation peak at a wavelength of 380 to 420 nm, a fluorescent tube having a radiation peak at a wavelength of 379 nm, and the like are preferable.

The general flow when applying nail art to a self-nail is as follows. When using an artificial nail that covers all of its own nails, called full wells, adjust the shape of the artificial nail, decorate the artificial nail in the same procedure, and then apply the artificial nail composition as described above. Affixed on the applied coating film.
(1) Adjust the shape of your nails with an emery board (file) and smooth the surface.
(2) Apply base coat and dry.
(3) Apply nail lacquer. In order to improve color development, it may be applied twice even in the case of a single color.
(4) When applying solid decorations such as stones before applying the top coat, apply them before the nail lacquer dries.
(5) Apply a top coat on the entire surface.
If the top coat is overcoated once every 2-3 days, the gloss and decoration of the surface are unlikely to deteriorate. By using at least one of the antibacterial artificial nail of the present invention as an artificial nail used in the above process and the artificial nail composition of the present invention as a base coat or top coat, natural light, fluorescent lamp, etc. The apatite with photocatalytic activity is activated by the ultraviolet rays contained in it, inactivating and decomposing bacteria, viruses, bacteria, molds, etc. that cause infectious diseases, and realizing continuous infection prevention even after wearing It becomes possible.
Furthermore, when an ultraviolet curable artificial nail composition is used as an artificial nail composition, it is possible to effectively infect infection when wearing an artificial nail by performing treatment (wearing an artificial nail) while irradiating ultraviolet rays. Bacteria, viruses, bacteria, molds and the like can be inactivated and decomposed.

  EXAMPLES Hereinafter, although this invention is demonstrated more concretely based on an Example, this invention is not restrict | limited to a following example.

Example 1
<Production of artificial nail composition>
Photocatalyst titanium apatite (apatite containing titanium as a metal necessary for having photocatalytic activity) is mixed in a solid content of 10% by mass in clear gel (manufactured by Calgel) which is an artificial nail composition containing an ultraviolet curable compound Then, an artificial nail composition was prepared.
As the photocatalytic titanium apatite, calcium / titanium hydroxyapatite (TiHAP; manufactured by Taihei Chemical Industrial Co., Ltd., PCAP-100, white powder having a volume average particle size of 3 μm to 8 μm) was used.

(Example 2)
<Production of antibacterial artificial nails>
The artificial nail composition prepared in Example 1 was applied onto an artificial nail formed from an acrylic resin, and cured by irradiation with near ultraviolet light of 0.5 mW / cm ² for 2 hours with a light source. A nail was prepared.

(Example 3: Antibacterial test)
The antibacterial artificial nail produced in Example 2 was used as a sample, and the following antibacterial test was performed. In addition, it replaced with the artificial nail composition of Example 1 as a blank (comparative example), and it was the same as that of Example 2 except having used the said clear gel (product made from Calgel) which does not contain photocatalyst titanium apatite. The artificial nail produced as described above was used.
A culture solution containing ringworm and Pseudomonas aeruginosa was dropped onto these samples and blanks. Subsequently, the number of viable bacteria was observed and compared immediately after dropping and 6 hours after ultraviolet irradiation. Specifically, the viable bacteria in the solution in which the sample and the blank were washed out with physiological saline were cultured using an agar medium for counting the number of bacteria, and the number of viable bacteria was measured from the number of colonies generated. Of viable bacteria. The results are shown in FIGS. The ultraviolet irradiation was performed using a black light source with a light amount of 0.5 mW / cm ² .
As a result, it was revealed that the antibacterial artificial nail of the present invention has an effect of killing both ringworm and Pseudomonas aeruginosa in about 6 hours. On the other hand, in the comparative example, ringworm and Pseudomonas aeruginosa could not be killed in 6 hours.

The following appendices are further disclosed with respect to the embodiments including the first to third embodiments.
(Additional remark 1) The antibacterial artificial nail characterized by including the photocatalyst powder containing the apatite which has photocatalytic activity at least, and a base material.
(Supplementary note 2) The antibacterial artificial nail according to supplementary note 1, wherein the photocatalyst powder is uniformly dispersed in the substrate.
(Additional remark 3) The antibacterial artificial nail of Additional remark 1 with which photocatalyst powder was uniformly apply | coated to the base-material surface.
(Appendix 4) The antibacterial artificial nail according to any one of appendices 1 to 3, wherein the apatite having photocatalytic activity is photocatalytic titanium apatite.
(Supplementary note 5) The antibacterial artificial nail according to any one of supplementary notes 1 to 4, wherein the base material is formed of an acrylic resin.
(Additional remark 6) The artificial nail composition characterized by including the photocatalyst powder containing the apatite which has a photocatalytic activity at least, an ultraviolet curable compound, a photoinitiator, and a solvent.
(Additional remark 7) The artificial nail composition characterized by including the photocatalyst powder containing the apatite which has photocatalytic activity at least, the film formation agent, and the organic solvent.
(Appendix 8) The artificial nail composition according to any one of appendices 6 to 7, wherein the apatite having photocatalytic activity is photocatalytic titanium apatite.
(Supplementary note 9) An artificial nail attachment kit comprising the antibacterial artificial nail according to any one of supplementary notes 1 to 5 and the artificial nail composition according to any one of supplementary notes 6 to 8.
(Additional remark 10) The process which installs the antibacterial artificial nail in any one of Additional remarks 1-5 on the coating film which apply | coated the artificial nail composition of Additional remark 6,
And a step of curing the artificial nail composition by irradiating ultraviolet rays.
(Appendix 11) A step of applying the artificial nail composition according to Appendix 6 to the own nail;
Installing the antibacterial artificial nail according to any one of appendices 1 to 5 on a coating film coated with the artificial nail composition;
And a step of curing the artificial nail composition by irradiating ultraviolet rays.
(Additional remark 12) The mounting method of the artificial nail characterized by including the process of irradiating and hardening | curing the coating film which apply | coated the artificial nail composition of Additional remark 6 with an ultraviolet-ray, and forming an artificial nail.
(Supplementary note 13) The step of applying the artificial nail composition according to supplementary note 6 to the own nail,
And a step of curing the artificial nail composition by irradiating ultraviolet rays to form an artificial nail.
(Supplementary note 14) The artificial nail attachment method according to any one of supplementary notes 10 to 13, wherein the apatite having photocatalytic activity is photocatalytic titanium apatite.

Claims (6)

  An antibacterial artificial nail comprising at least a photocatalyst powder containing apatite having photocatalytic activity and a base material.   An artificial nail composition comprising a photocatalyst powder containing at least apatite having photocatalytic activity, an ultraviolet curable compound, a photopolymerization initiator, and a solvent.   An artificial nail composition comprising a photocatalyst powder containing at least apatite having photocatalytic activity, a film-forming agent, and an organic solvent.   An artificial nail attachment kit comprising the antibacterial artificial nail according to claim 1 and the artificial nail composition according to any one of claims 2 to 3. Installing the antibacterial artificial nail according to claim 1 on a coating film coated with the artificial nail composition according to claim 2;
And a step of curing the artificial nail composition by irradiating ultraviolet rays.   A method for attaching an artificial nail, comprising a step of forming an artificial nail by irradiating an ultraviolet ray with a coating film coated with the artificial nail composition according to claim 2.