Antiviral article and antiviral resin composition

Abstract

Provided is an antiviral article that is inhibited from discoloring due to light. [Solution] An antiviral article having a cured material layer, the cured material layer comprising a cured product of a curable resin composition, an antiviral agent in which silver ions are supported on or contained in a carrier, and a light stabilizer, wherein the light stabilizer comprises one or more hindered amine compounds selected from an NH-type hindered amine compound and an NR-type hindered amine compound. The antiviral article preferably has the cured material layer on a substrate.

Description

[Technical Field]

[0001] The present disclosure relates to antiviral articles and antiviral resin compositions. [Background technology]

[0002] From the viewpoint of hygiene, antibacterial treatment has conventionally been carried out by applying an antibacterial composition to the surfaces of objects that people touch, such as interior materials for buildings, interior materials for vehicles, office automation equipment, and touch panels.

[0003] Antibacterial compositions or antibacterial articles have been proposed in, for example, Patent Documents 1 to 3. However, merely having antibacterial properties is not sufficient against viruses such as influenza viruses. That is, the antibacterial compositions or articles disclosed in Patent Documents 1 to 3 sometimes fail to provide satisfactory antiviral properties.

[0004] On the other hand, Patent Documents 4 and 5 have proposed compositions or articles having antiviral properties. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 63-265958 [Patent Document 2] Patent No. 3551201 [Patent Document 3] Patent No. 4840048 [Patent Document 4] Patent No. 6145758 [Patent Document 5] Patent No. 6229429 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0006] The antiviral resin composition of Patent Document 4 contains cuprous oxide particles, etc. Therefore, it is not possible to prevent the color (reddish brown) derived from the color of cuprous oxide.

[0007] The antiviral decorative sheet for interior use of Patent Document 5 is obtained by blending a silver-based inorganic additive or a zinc-based inorganic additive into the coating resin on the outermost surface of the decorative sheet. Of the additives disclosed in Patent Document 5, the latter zinc-based inorganic additive poses health problems when ingested in large amounts. On the other hand, among the additives in Patent Document 5, the former silver-based inorganic additive is expensive but does not pose any health problems. However, when the amount of silver-based inorganic additive added is increased to exhibit antiviral properties, a problem arises in that the color changes to brown due to light (visible light, ultraviolet light). Patent Document 5 does not consider at all the problem of color changes caused by increasing the amount of silver-based inorganic additive added.

[0008] An object of the present disclosure is to suppress discoloration of silver-based antiviral articles and antiviral resin compositions due to light. [Means for solving the problem]

[0009] In order to solve the above problems, the present disclosure provides the following [1] and [2]. [1] An antiviral article having a cured material layer, wherein the cured material layer comprises a cured material of a curable resin composition, an antiviral agent in which a carrier carries or contains silver ions, and a light stabilizer, wherein the light stabilizer comprises one or more hindered amine compounds selected from an NH-type hindered amine compound and an NR-type hindered amine compound. [2] A resin composition comprising a curable resin composition, an antiviral agent in which silver ions are supported on or contained in a carrier, and a light stabilizer, wherein the light stabilizer comprises one or more hindered amine compounds selected from an NH-type hindered amine compound and an NR-type hindered amine compound. [Effects of the Invention]

[0010] According to the present disclosure, it is possible to provide an antiviral article and an antiviral resin composition in which discoloration of a silver-based antiviral agent due to light (visible light, ultraviolet light) is suppressed. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a cross-sectional view showing one embodiment of an antiviral article of the present disclosure. [Figure 2] FIG. 1 is a cross-sectional view showing another embodiment of an antiviral article of the present disclosure. [Figure 3] FIG. 1 is a cross-sectional view showing another embodiment of an antiviral article of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0012] [Antiviral products] The antiviral article of the present disclosure is an article having a cured material layer, and the cured material layer includes a cured product of a curable resin composition, an antiviral agent in which silver ions are supported on or contained in a carrier, and a light stabilizer, wherein the light stabilizer includes one or more hindered amine compounds selected from an NH-type hindered amine compound and an NR-type hindered amine compound.

[0013] Generally, even for articles made of the same materials and layer configuration, the "antiviral" efficacy of the article may not correlate with the "antibacterial" and "antifungal" efficacy described above depending on various conditions. Examples of various conditions include the type of virus, the type of bacteria, the type of mold, and environmental conditions. Therefore, the antiviral article of the present disclosure may be applicable not only to antiviral applications but also to antibacterial applications, depending on the type of bacteria, environmental conditions, and the required level of antibacterial properties. Since mold is a type of fungus, the antiviral article of the present disclosure may also be applicable to antifungal applications, depending on the type of mold, environmental conditions, and the required level of antifungal properties.

[0014] 1(A) to 1(E), 2(A) to 2(D), and 3 are cross-sectional views showing representative embodiments of an antiviral article 100 of the present disclosure. The antiviral article 100 in Figures 1(A) to (E), 2(A) to (D), and 3 has a cured material layer 10 containing a cured material 11 of a curable resin composition and an antiviral agent 12 in which silver ions are supported on or contained in a carrier. The cured material layer 10 of the antiviral article 100 in Figures 1(A) to (E), 2(A) to (D), and 3 contains "one or more hindered amine compounds selected from NH-type hindered amine compounds and NR-type hindered amine compounds" (not shown).

[0015] The antiviral article 100 in FIGS. 1(A) to 1(E) is formed of a single layer of a cured material layer 10. The cured material layer 10 in FIG. 1(A) contains the antiviral agent 12 throughout the cured material layer 10 in both the thickness direction (the Z-axis direction in the figure) and the in-plane directions (the directions in the XY plane in the figure). The cured material layer 10 in FIG. 1(B) contains the antiviral agent 12 on the surface side (upper side in the figure) of the cured material layer 10. The cured material layer 10 in FIG. 1(C) contains the antiviral agent 12 on the surface side (upper side in the figure) and the back side (lower side in the figure) of the cured material layer 10. The cured material layer 10 in FIG. 1(D) contains the antiviral agent 12 in a partial region in the in-plane direction on the surface side (upper side in the figure) of the cured material layer 10. The cured material layer 10 in FIG. 1(E) contains the antiviral agent 12 in a partial region on the surface side (upper side in the figure) of the cured material layer 10 and in a partial region on the back side (lower side in the figure) of the cured material layer 10. 1(A) to 1(E), there are no particular limitations on the location of the antiviral agent 12 in the cured material layer 10. However, from the viewpoint of enhancing antiviral properties, it is preferable that the antiviral agent 12 be present on the surface that comes into contact with people.

[0016] An antiviral article 100 consisting of a single layer of the cured material layer 10 as shown in Figs. 1(A) to (E) can be obtained, for example, by forming a laminate in which the cured material layer 10 is formed on a substrate having releasability, and then peeling off the substrate having releasability from the laminate.

[0017] The antiviral article 100 in FIGS. 2(A) to 2(D) has a cured material layer 10 on a substrate 20. The antiviral article 100 in Fig. 2(A) has a cured material layer 10 covering the entire surface of one side of the substrate 20. The antiviral article 100 in Fig. 2(B) has a cured material layer 10 covering the entire surface of both sides of the substrate 20. The antiviral article 100 in Fig. 2(C) has a cured material layer 10 in a partial region of one side of the substrate 20 (the + side in the Z axis direction in the figure). The antiviral article 100 in Fig. 2(D) has a cured material layer 10 in a partial region of one side of the substrate 20 (the + side in the Z axis direction in the figure) and in a partial region of the other side of the substrate 20 (the - side in the Z axis direction in the figure). 2(A) to 2(D), the cured material layer 10 may be formed on the entire surface of the substrate 20, or may be formed on a part of the surface of the substrate 20. Furthermore, as shown in FIGS. 2(A) to 2(D), the cured material layer 10 may be formed on only one surface of the substrate 20, or may be formed on both surfaces of the substrate 20.

[0018] The antiviral article 100 in Fig. 3 has a cured material layer 10 on a three-dimensional substrate 20. The three-dimensional substrate 20 in Fig. 3 is a door handle, and Fig. 3 shows a cross-sectional view of the door handle.

[0019] <Cured Product of Curable Resin Composition> The cured material layer contains a cured material of a curable resin composition. In this specification, the "cured material of a curable resin composition" may be abbreviated as "cured material." The cured product of the curable resin composition mainly serves as a binder resin. By including this cured product, the antiviral article has good scratch resistance and can more easily maintain its antiviral properties over a long period of time.

[0020] Examples of the cured product of the curable resin composition include a cured product of a thermosetting resin composition or a cured product of an ionizing radiation-curable resin composition, and among these, a cured product of an ionizing radiation-curable resin composition is preferred from the viewpoints of scratch resistance and production efficiency.

[0021] The thermosetting resin composition is a composition that contains at least a thermosetting resin and is a resin composition that is cured by heating. Examples of thermosetting resins include acrylic resins, urethane resins, phenolic resins, urea melamine resins, epoxy resins, unsaturated polyester resins, silicone resins, etc. In addition to these thermosetting resins, a curing agent, a curing catalyst, etc. are added to the thermosetting resin composition as needed.

[0022] Representative examples of ionizing radiation-curable resin compositions include electron beam-curable resin compositions and ultraviolet light-curable resin compositions, and among these, electron beam-curable resin compositions are preferred from the viewpoints of having less odor and being less prone to coloration because a polymerization initiator is not required, etc. Furthermore, when the cured product layer contains an ultraviolet light absorber described below, electron beam-curable resin compositions are also preferred in that they tend to increase the crosslink density of the cured product layer and tend to improve scratch resistance and contamination resistance.

[0023] The ionizing radiation curable resin composition is a composition containing a compound having an ionizing radiation curable functional group (hereinafter also referred to as "ionizing radiation curable compound"). The ionizing radiation-curable functional group is a group that crosslinks and cures upon irradiation with ionizing radiation, and preferred examples thereof include functional groups having an ethylenic double bond such as a (meth)acryloyl group, a vinyl group, and an allyl group. Further examples of the ionizing radiation-curable functional group include an epoxy group and an oxetanyl group. In this specification, the term "(meth)acryloyl group" refers to an acryloyl group or a methcroyl group, and the term "(meth)acrylate" refers to an acrylate or a methacrylate. Furthermore, ionizing radiation refers to electromagnetic waves or charged particle beams that have an energy quantum capable of polymerizing or crosslinking molecules. Typically, ultraviolet (UV) rays or electron beams (EB) are used, but it also includes other electromagnetic waves such as X-rays and gamma rays, and charged particle beams such as alpha rays and ion beams. Specifically, the ionizing radiation curable compound can be appropriately selected from polymerizable monomers and polymerizable oligomers (sometimes referred to as "polymerizable prepolymers") that have conventionally been used as ionizing radiation curable resins.

[0024] The ionizing radiation curable compound is preferably a compound having two or more ethylenically unsaturated bond groups, and more preferably a polyfunctional (meth)acrylate compound having two or more ethylenically unsaturated bond groups. The polyfunctional (meth)acrylate compound may be either a monomer or an oligomer. In order to simultaneously achieve good abrasion resistance, ease of processing and handling, and antiviral activity in the resulting article, the oligomer of the polyfunctional (meth)acrylate compound preferably has a weight-average molecular weight of from 1,000 to 10,000, more preferably from 2,000 to 6,000. The number of functional groups per oligomer molecule is preferably from 2 to 10, more preferably from 2 to 6.

[0025] Among the polyfunctional (meth)acrylate compounds, examples of bifunctional (meth)acrylate monomers include ethylene glycol di(meth)acrylate, bisphenol A tetraethoxydiacrylate, bisphenol A tetrapropoxydiacrylate, and 1,6-hexanediol diacrylate. Examples of trifunctional or higher (meth)acrylate monomers include trimethylolpropane tri(meth)acrylate, pentaerythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, dipentaerythritol hexa(meth)acrylate, dipentaerythritol tetra(meth)acrylate, and isocyanuric acid-modified tri(meth)acrylate. Examples of the polyfunctional (meth)acrylate oligomer include acrylate polymers such as urethane (meth)acrylate, epoxy (meth)acrylate, polyester (meth)acrylate, and polyether (meth)acrylate.

[0026] Urethane (meth)acrylates can be obtained, for example, by reacting a polyhydric alcohol and an organic diisocyanate with a hydroxy (meth)acrylate.

[0027] Preferred epoxy (meth)acrylates are (meth)acrylates obtained by reacting a tri- or higher functional aromatic epoxy resin, alicyclic epoxy resin, aliphatic epoxy resin, or the like with (meth)acrylic acid; (meth)acrylates obtained by reacting a di- or higher functional aromatic epoxy resin, alicyclic epoxy resin, aliphatic epoxy resin, or the like with a polybasic acid and (meth)acrylic acid; and (meth)acrylates obtained by reacting a di- or higher functional aromatic epoxy resin, alicyclic epoxy resin, aliphatic epoxy resin, or the like with a phenol and (meth)acrylic acid.

[0028] The above ionizing radiation curable resins can be used alone or in combination of two or more.

[0029] When the ionizing radiation curable compound is an ultraviolet ray curable compound, the ionizing radiation curable resin composition preferably contains additives such as a photopolymerization initiator and a photopolymerization accelerator. The photopolymerization initiator may be one or more selected from acetophenone, benzophenone, α-hydroxyalkylphenone, Michler's ketone, benzoin, benzil dimethyl ketal, benzoyl benzoate, α-acyloxime ester, thioxanthones, and the like. The photopolymerization accelerator can reduce polymerization inhibition caused by air during curing and increase the curing rate, and examples thereof include one or more selected from p-dimethylaminobenzoic acid isoamyl ester, p-dimethylaminobenzoic acid ethyl ester, etc.

[0030] The content of the cured product of the curable resin composition is preferably 50% by mass or more, more preferably 70% by mass or more, even more preferably 90% by mass or more, and most preferably 100% by mass, based on the total amount of the binder resin.

[0031] <Antiviral agent comprising a carrier carrying or containing silver ions> The cured material layer contains an antiviral agent in which a carrier supports or contains silver ions. In this specification, "an antiviral agent in which a carrier supports or contains silver ions" may be abbreviated as "antiviral agent". To enhance the antiviral properties, it is preferable that at least a part of the antiviral agent 12 protrudes from the cured material layer 10 as shown in FIGS. 1(A) to 1(E).

[0032] As the carrier, inorganic compounds such as zeolite, apatite, glass, zirconium phosphate and titanium phosphate are preferred, and among them, porous inorganic compounds are preferred.

[0033] Zeolites are aluminosilicates of alkali metals or alkaline earth metals, and both natural and synthetic zeolites can be used. Zeolites are classified into A-type, faujasite-type (X-type, Y-type), mordenite-type, clinoptilolite-type, etc., depending on their crystal structure, and any of these can be used.

[0034] Apatite is a general term for minerals having a composition represented by the following general formula: M 10 (ZO4)3X2 In the above formula, M represents Ca, Ba, Mg, Na, K, Fe, Al, etc., Z represents P, S, Si, As, etc., and X represents F, Cl, O, OH, etc. A representative example that corresponds to the above formula is fluorapatite "Ca 10 (PO4)6F2", hydroxyapatite "Ca 10 (PO4)6(OH)2".

[0035] Examples of glass include soda glass, borosilicate glass, lead glass, aluminosilicate glass, borate glass, and phosphate glass.

[0036] As a method for supporting or incorporating silver ions into a carrier, various known forms may be appropriately selected taking into consideration various conditions such as the type of curable resin composition, its respective forms, processing conditions, and the required antiviral performance. Here, "containing silver ions" means that silver ions or a substance capable of generating silver ions are held in a carrier in some form. Furthermore, "a substance capable of generating silver ions" means a substance that generates silver ions due to external factors or factors over time, such as a substance that generates silver ions by dissolving in water, etc. Specific examples of the supporting or containing form include a method of supporting by physical adsorption or chemical adsorption; a method of supporting by an ion exchange reaction; a method of supporting by a binder; a method of incorporating a silver compound by implanting it into a support; and a method of supporting or containing by forming a thin layer of a silver compound on the surface of a support by a thin film formation method such as vapor deposition, dissolution / precipitation reaction, or sputtering.

[0037] Preferably, the antiviral agent is in particulate form. The shape of the particles of the antiviral agent is not particularly limited, and may be spherical, ellipsoidal, polyhedral, scale-like, or the like.

[0038] The average particle size of the antiviral agent is preferably 0.1 to 10.0 μm, more preferably 0.5 to 5.0 μm, and even more preferably 1.0 to 4.0 μm. By setting the average particle size to 0.1 μm or more, the ink for the cured layer is more likely to be stable. On the other hand, by setting the average particle size to 10.0 μm or less, it is possible to easily prevent the antiviral agent from excessively protruding from the surface of the cured layer, resulting in poor appearance, reduced scratch resistance and stain resistance, and whitening of the coating film, and it is also possible to easily prevent wear on coating device components (such as coating rolls and doctor blades).

[0039] When the average particle size of the antiviral agent is defined as D and the thickness of the cured product layer is defined as T, D / T is preferably 1.0 or less, more preferably 0.7 or less, and even more preferably 0.4 or less. Setting D / T to 1.0 or less makes it easier to prevent a decrease in contamination resistance and whitening of the coating film caused by excessive protrusion of the antiviral agent from the surface of the cured product layer, and also makes it easier to prevent wear of coating device components (such as a coating roll or doctor blade). The lower limit of D / T is not particularly limited, but is usually 0.01 or more, and preferably 0.05 or more.

[0040] In this specification, the average particle size refers to the mass average value d50 measured in particle size distribution measurement by laser light diffraction method.

[0041] The amount of silver ions in the antiviral agent is preferably 0.1 to 30.0 parts by mass, more preferably 0.5 to 25.0 parts by mass, and even more preferably 1.0 to 20.0 parts by mass, relative to 100 parts by mass of the carrier. Here, the "amount of silver ions" refers to both supported and contained silver ions. By setting the amount of silver ions to 0.1 parts by mass or more, it is possible to improve antiviral properties, and by setting the amount of silver ions to 30.0 parts by mass or less, it is possible to more easily suppress discoloration due to light.

[0042] With regard to the content of the antiviral agent, relative to 100 parts by mass of the cured product, the lower limit is preferably 0.1 part by mass or more, more preferably 0.5 part by mass or more, and more preferably 1.0 part by mass or more, and the upper limit is preferably 20.0 parts by mass or less, more preferably 17.0 parts by mass or less, more preferably 15.0 parts by mass or less, more preferably 10.0 parts by mass or less, and more preferably 5.0 parts by mass or less. By setting the content of the antiviral agent to 0.1 parts by mass or more, it is possible to easily achieve good antiviral properties. By setting the content of the antiviral agent to 20.0 parts by mass or less, discoloration due to light can be more easily suppressed. Furthermore, by setting the content of the antiviral agent to 20.0 parts by mass or less, deterioration of coating film physical properties such as coating film strength and scratch resistance can be suppressed. Furthermore, by setting the content of the antiviral agent to 20.0 parts by mass or less, deterioration of contamination resistance and whitening of the coating film due to excessive protrusion of the antiviral agent from the surface of the cured product layer can be more easily suppressed, and wear of coating device components (such as a coating roll and a doctor blade) can be more easily suppressed. When the binder resin is a cured product of a curable resin composition, the content of the antiviral agent is preferably set to be somewhat higher within the above range.

[0043] <Light stabilizer> The cured product layer further contains a light stabilizer, and further contains, as the light stabilizer, one or more hindered amine compounds selected from NH-type hindered amine compounds and NR-type hindered amine compounds. If the cured product layer does not contain, as the light stabilizer, one or more hindered amine compounds selected from NH-type hindered amine compounds and NR-type hindered amine compounds, discoloration of the antiviral article due to light cannot be suppressed.

[0044] The hindered amine compound has a structure containing a 2,2,6,6-tetramethylpiperidine skeleton in the molecule. Examples of the hindered amine compound include NH-type hindered amine compounds, NR-type hindered amine compounds, and NOR-type hindered amine compounds, and the present disclosure requires that the composition contain one or more hindered amine compounds selected from NH-type hindered amine compounds and NR-type hindered amine compounds. The reason that one or more hindered amine compounds selected from NH-type hindered amine compounds and NR-type hindered amine compounds suppress discoloration is thought to be because NH-type hindered amine compounds and NR-type hindered amine compounds easily form complexes with silver ions. Among the NH-type hindered amine compounds and the NR-type hindered amine compounds, the NR-type hindered amine compounds are preferred. That is, the cured product layer preferably contains one or more hindered amine compounds selected from the NR-type hindered amine compounds.

[0045] An NH-type hindered amine compound is one in which the hydrogen atom bonded to the nitrogen atom in the 2,2,6,6-tetramethylpiperidine skeleton remains as a hydrogen atom. Specific examples of NH-type hindered amine compounds include bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate.

[0046] The NR-type hindered amine compound refers to a compound in which the hydrogen atom bonded to the nitrogen atom in the 2,2,6,6-tetramethylpiperidine skeleton is substituted with an alkyl group. The number of carbon atoms in the alkyl group is preferably 1 to 12, and more preferably 1 (the alkyl group is a methyl group). Specific examples of the NR-type hindered amine compound include bis[1,2,2,6,6-pentamethyl-4-piperidinyl]2-[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]-2-butylpropanedioate, bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate, 1-methyl 10-(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, and 1,2,2,6,6-pentamethyl-4-piperidinyl methacrylate.

[0047] NOR-type hindered amine compounds are compounds in which the hydrogen atom bonded to the nitrogen atom in the 2,2,6,6-tetramethylpiperidine skeleton is OR 1 or OCOR 2 It refers to a group substituted with R 1 and R 2 is an alkyl group and / or a cycloalkyl group, preferably an alkyl group and / or a cycloalkyl group having 5 to 12 carbon atoms.

[0048] The NH-type hindered amine compound and the NR-type hindered amine compound preferably have a base dissociation constant (pkb) of 8.5 or less, more preferably 7.0 or less, and even more preferably 6.0 or less. When the pkb of the NH-type hindered amine compound and the NR-type hindered amine compound is 8.5 or less, discoloration can be more easily suppressed. The lower limit of the pkb of the NH-type hindered amine compound and the NR-type hindered amine compound is not particularly limited, but is preferably 4.0 or more, and more preferably 4.5 or more.

[0049] The NH-type hindered amine compound and the NR-type hindered amine compound may or may not have an ethylenic double bond polymerizable with the curable resin composition.

[0050] From the viewpoint of easily improving the solubility in the ink for the cured material layer, the molecular weight of the NH-type hindered amine compound and the NR-type hindered amine compound is preferably 1,000 or less, more preferably 800 or less, and even more preferably 700 or less. By improving the solubility of the NH-type hindered amine compound and the NR-type hindered amine compound in the ink for the cured material layer, the NH-type hindered amine compound and the NR-type hindered amine compound are diffused throughout the entire cured material layer, which is preferable in that discoloration can be more easily suppressed. The lower limit of the molecular weight of the NH-type hindered amine compound and the NR-type hindered amine compound is not particularly limited, but is usually 200 or more, preferably 215 or more, and more preferably 230 or more.

[0051] The content of the NH-type hindered amine compound and the NR-type hindered amine compound is preferably 20 to 1,000 parts by mass, more preferably 30 to 500 parts by mass, and even more preferably 50 to 200 parts by mass, relative to 100 parts by mass of the antiviral agent. When two or more NH-type hindered amine compounds and NR-type hindered amine compounds are contained, the content refers to the total amount of the two or more NH-type hindered amine compounds and NR-type hindered amine compounds. By setting the content of the NH-type hindered amine compound and the NR-type hindered amine compound to 20 parts by mass or more, discoloration can be easily suppressed. Furthermore, by setting the content of the NH-type hindered amine compound and the NR-type hindered amine compound to 1,000 parts by mass or less, a decrease in the crosslink density of the cured product of the curable resin composition, which in turn makes it possible to easily suppress a decrease in the scratch resistance and contamination resistance of the cured product layer.

[0052] Other light stabilizers The cured product layer may contain other light stabilizers, such as NOR-type hindered amine compounds, aromatic compounds, amine compounds, organic acid compounds, and catechin compounds, as long as the effects of the present disclosure are not impaired. Light stabilizers other than NH-type hindered amine compounds and NR-type hindered amine compounds are less likely to suppress discoloration. For this reason, it is preferable that the cured material layer is substantially free of other light stabilizers (light stabilizers other than NH-type hindered amine compounds and NR-type hindered amine compounds). "Substantially free" means that the content of other light stabilizers relative to the total solid content of the cured material layer is 0.1% by mass or less, preferably 0.01% by mass or less, and more preferably 0.001% by mass or less.

[0053] <Antioxidants> The cured material layer preferably further contains an antioxidant. Examples of antioxidants include phenol-based antioxidants, sulfur-based antioxidants, and phosphorus-based antioxidants, with phosphorus-based antioxidants being preferred. When the cured product layer contains a phosphorus-based antioxidant, discoloration due to light can be more easily suppressed. Phosphorus-based antioxidants are particularly preferred because they can easily suppress discoloration due to light in the state of the antiviral resin composition. By suppressing discoloration due to light in the state of the antiviral resin composition, the handleability of the antiviral resin composition can be improved. Phosphorus-based antioxidants can easily capture radicals generated by light, and are therefore thought to be able to easily suppress the deterioration of silver ions.

[0054] <Phosphorus-based antioxidant> Examples of phosphorus-based antioxidants include compounds having a phosphorous acid structure represented by the following formula (1), compounds having a phosphonic acid structure represented by the following formula (2), compounds having a phosphinic acid structure represented by the following formula (3), and compounds having a phosphine oxide structure represented by the following formula (4). Among these, compounds having a phosphorous acid structure represented by the following formula (1) are preferred because they are more likely to exhibit the effect of suppressing discoloration due to light in the state of the antiviral resin composition. Furthermore, among compounds having a phosphorous acid structure represented by the following formula (1), compounds represented by the following general formula (1-2-1) are more preferred. The phosphorus-based antioxidants can be used alone or in combination of two or more.

[0055] [ka]

[0056] Examples of compounds having a phosphorous acid structure represented by formula (1) include compounds represented by the following general formulas (1-1) to (1-3). Among general formulas (1-1) to (1-3), those represented by general formulas (1-1) and (1-2) are preferred because they tend to have good solubility in the ink for the cured product layer. By improving the solubility of the phosphorus-based antioxidant in the ink for the cured product layer, the phosphorus-based antioxidant is diffused throughout the cured product layer, which is preferred because discoloration can be more easily suppressed.

[0057] [ka]

[0058] In general formula (1-1), R 11 , R 12 and R 13 each independently represents a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an arylalkyl group, or a hydrocarbon group which may contain a heteroatom, and these may have a substituent. 11 , R 12 and R 13 Two selected from the may be bonded to form a ring.

[0059] From the viewpoint of further suppressing discoloration, R 11 , R 12 and R 13 At least one of R is preferably a linear alkyl group. The linear alkyl group preferably has 6 to 18 carbon atoms, more preferably 8 to 15 carbon atoms, and even more preferably 8 to 10 carbon atoms. 11 , R 12 and R 13 If at least one of R is a straight chain alkyl group, the remaining R 11 , R 12 and R 13 is preferably a phenyl group. In addition, from the viewpoint of increasing solubility and further suppressing discoloration, R 11 , R 12 and R 13 are preferably not bonded to each other (R 11 , R 12 and R 13 It is preferred that two selected from do not bond to form a ring).

[0060] Specific examples of the phosphorus-based antioxidant of general formula (1-1) are shown in the following formulae (1-1-1) to (1-1-3). [ka]

[0061] In general formula (1-2), R 23 is a hydrocarbon group which may contain a heteroatom and may further have a substituent. 21 , R 22 , R 24 and R 25 are each independently a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an arylalkyl group, or a hydrocarbon group which may contain a heteroatom, and may further have a substituent. 21 and R 22 may be bonded to form a ring. 24 and R 25 may be bonded to form a ring.

[0062] From the viewpoint of further suppressing discoloration, R 21 , R 22 , R 22 and R 24 Preferably, at least one of R is a linear alkyl group, and more preferably, all of R are linear alkyl groups. The linear alkyl group preferably has 6 to 18 carbon atoms, and more preferably 12 to 15 carbon atoms. From the viewpoint of increasing solubility and further suppressing discoloration, R 21 , R 22 , R 24 and R 25 are preferably not bonded to each other (R 21 , R 22 , R 24 and R 25 are preferably not bonded to each other to form a ring).

[0063] Specific examples of the phosphorus-based antioxidant of general formula (1-2) are shown below: In the following general formula (1-2-1), R each independently represents a linear alkyl group having 12 to 15 carbon atoms. [ka]

[0064] In general formula (1-3), R 32R is a hydrocarbon group which may contain a heteroatom and may further have a substituent. 31 and R 33 are each independently a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an arylalkyl group, or a hydrocarbon group which may contain a heteroatom, and may further have a substituent.

[0065] The phosphorus-based antioxidant may have an ethylenic double bond polymerizable with the curable resin composition, but preferably does not have such a bond. When the phosphorus-based antioxidant does not have an ethylenic double bond polymerizable with the curable resin composition, the degree of freedom of movement of the phosphorus-based antioxidant within the cured material layer increases, and the phosphorus-based antioxidant is diffused throughout the cured material layer, which is thought to make it easier to suppress discoloration.

[0066] From the viewpoint of easily improving solubility in the ink for the cured product layer, the molecular weight of the phosphorus-based antioxidant is preferably 1500 or less, more preferably 1300 or less, and even more preferably 1200 or less. There is no particular lower limit to the molecular weight of the phosphorus-based antioxidant, but it is usually 270 or more, preferably 300 or more, and more preferably 330 or more.

[0067] With regard to the content of the phosphorus-based antioxidant, relative to 100 parts by mass of the antiviral agent, the lower limit is preferably 1 part by mass or more, more preferably 3 parts by mass or more, more preferably 5 parts by mass or more, more preferably 10 parts by mass or more, more preferably 15 parts by mass or more, and more preferably 20 parts by mass or more, and the upper limit is preferably 1,000 parts by mass or less, more preferably 800 parts by mass or less, more preferably 600 parts by mass or less, more preferably 400 parts by mass or less, more preferably 200 parts by mass or less, more preferably 100 parts by mass or less, and more preferably 70 parts by mass or less. By setting the content of the phosphorus-based antioxidant to 1 part by mass or more, discoloration can be easily suppressed, and by setting the content of the phosphorus-based antioxidant to 1,000 parts by mass or less, a decrease in the crosslink density of the cured product of the curable resin composition, which in turn can easily suppress a decrease in the scratch resistance and contamination resistance of the cured product layer.

[0068] <UV absorber> From the viewpoint of weather resistance, the cured product layer preferably further contains an ultraviolet absorber. Examples of the ultraviolet absorber include benzotriazole-based ultraviolet absorbers, benzophenone-based ultraviolet absorbers, and triazine-based ultraviolet absorbers, with triazine-based ultraviolet absorbers being preferred. One or more types of ultraviolet absorbers can be used.

[0069] Among the triazine-based ultraviolet absorbers, hydroxyphenyltriazine-based ultraviolet absorbers in which three organic groups selected from hydroxyphenyl groups, alkoxyphenyl groups, and organic groups containing these groups are linked to a triazine ring are more preferred, and hydroxyphenyltriazine-based ultraviolet absorbers represented by the following general formula (A) are even more preferred. Because the hydroxyphenyltriazine-based ultraviolet absorber has a branched structure, it is expected to be less likely to bleed out from the cured product layer, and to achieve excellent weather resistance over a longer period of time. Furthermore, ultraviolet absorbers having an ethylenic double bond, such as a (meth)acryloyl group, a vinyl group, or an allyl group, are preferred because they are more likely to suppress bleeding out.

[0070] [ka]

[0071] In general formula (A), R 11 is a divalent organic group, and R 12 is -C(=O)OR 15 and R 13 , R 14 and R 15 are each independently a monovalent organic group, and n 11 and n 12 are each independently an integer of 1 to 5.

[0072] R 11Examples of the divalent organic group include aliphatic hydrocarbon groups such as alkylene groups and alkenylene groups, and from the viewpoint of weather resistance, alkylene groups are preferred, and the number of carbon atoms therein is preferably 1 to 20, more preferably 1 to 12, still more preferably 1 to 8, and particularly preferably 1 to 4. The alkylene group and alkenylene group may be linear, branched, or cyclic, but linear or branched groups are preferred. Examples of alkylene groups having 1 to 20 carbon atoms include methylene, 1,1-ethylene, 1,2-ethylene, 1,3-propylene, 1,2-propylene, 2,2-propylene, and other various propylene groups (hereinafter, "various" refers to linear, branched, and isomeric forms thereof), various butylene groups, various pentylene groups, various hexylene groups, various heptylene groups, various octylene groups, various nonylene groups, various decylene groups, various undecylene groups, various dodecylene groups, various tridecylene groups, various tetradecylene groups, various pentadecylene groups, various hexadecylene groups, various heptadecylene groups, various octadecylene groups, various nonadecylene groups, and various icosylene groups.

[0073] R 13 and R 14 Examples of the monovalent organic group include an alkyl group, an alkenyl group, a cycloalkyl group, an aryl group, and an arylalkyl group. Of these, aromatic hydrocarbon groups such as an aryl group and an arylalkyl group are preferred, and an aryl group is more preferred. 13 and R 14 The monovalent organic group is preferably a phenyl group. The aryl group preferably has 6 to 20 carbon atoms, more preferably 6 to 12 carbon atoms, and even more preferably 6 to 10 carbon atoms, such as a phenyl group, various methylphenyl groups, various ethylphenyl groups, various dimethylphenyl groups, various propylphenyl groups, various trimethylphenyl groups, various butylphenyl groups, and various naphthyl groups. The arylalkyl group preferably has 7 to 20 carbon atoms, more preferably 7 to 12 carbon atoms, and even more preferably 7 to 10 carbon atoms, such as a benzyl group, a phenethyl group, various phenylpropyl groups, various phenylbutyl groups, various methylbenzyl groups, various ethylbenzyl groups, various propylbenzyl groups, various butylbenzyl groups, and various hexylbenzyl groups.

[0074] R 15 Examples of the monovalent organic group include an alkyl group, an alkenyl group, a cycloalkyl group, an aryl group, and an arylalkyl group. Of these, an aliphatic hydrocarbon group such as an alkyl group or an alkenyl group is preferred, and an alkyl group is more preferred. That is, R 12 As the alkyl ester group, an alkyl ester group or an alkenyl ester group is preferred, and an alkyl ester group is more preferred. The alkyl group is preferably an alkyl group having 1 to 20 carbon atoms, more preferably 2 to 16 carbon atoms, and even more preferably 6 to 12 carbon atoms, such as a methyl group, an ethyl group, various propyl groups, various butyl groups, various pentyl groups, various hexyl groups, various octyl groups, various nonyl groups, various decyl groups, various undecyl groups, various dodecyl groups, various tridecyl groups, various tetradecyl groups, various pentadecyl groups, various hexadecyl groups, various heptadecyl groups, various octadecyl groups, various nonadecyl groups, and various icosyl groups. The alkenyl group is preferably an alkenyl group having 2 to 20 carbon atoms, more preferably 3 to 16 carbon atoms, and even more preferably 6 to 12 carbon atoms, such as a vinyl group, various propenyl groups, various butenyl groups, various pentenyl groups, various hexenyl groups, various octenyl groups, various nonenyl groups, various decenyl groups, various undecenyl groups, various dodecenyl groups, various tridecenyl groups, various tetradecenyl groups, various pentadecenyl groups, various hexadecenyl groups, various heptadecenyl groups, various octadecenyl groups, various nonadecenyl groups, and various icosenyl groups.

[0075] More specifically, the hydroxyphenyltriazine compound represented by the general formula (A) is R 11 is an alkylene group having 1 to 20 carbon atoms, and R 12 and R 15 is an alkyl ester group which is an alkyl group having 1 to 20 carbon atoms, and R 13 and R 14 is an aryl group having 6 to 20 carbon atoms, and n 11 and n 12 Hydroxyphenyltriazine compounds having a value of 1 are preferred, and R 11 is an alkylene group having 1 to 12 carbon atoms, and R 12 and R 15 is an alkyl ester group having 2 to 16 carbon atoms, and R 13 and R 14 is an aryl group having 6 to 12 carbon atoms, and n 11 and n 12 Hydroxyphenyltriazine compounds in which R is 1 are more preferred, 11 is an alkylene group having 1 to 8 carbon atoms, and R 12 R 15 and an alkyl ester group, which is an alkyl group having 6 to 12 carbon atoms, R 13 and R 14 is an aryl group having 6 to 10 carbon atoms, and n 11 and n 12 More preferred are hydroxyphenyltriazine compounds in which R 11 is an alkylene group having 1 to 4 carbon atoms, and R 12 and R15 is an ester group which is an alkyl group having 8 carbon atoms, and R 13 and R 14 is a phenyl group, and n 11 and n 12 Hydroxyphenyltriazine compounds having a molar ratio of 1 are particularly preferred.

[0076] The content of the ultraviolet absorber is preferably 0.2 to 10.0 parts by mass, more preferably 0.5 to 5.0 parts by mass, and even more preferably 1.0 to 4.0 parts by mass, per 100 parts by mass of the cured product.

[0077] The cured product layer may contain an extender pigment, which is used, for example, to adjust the design of the antiviral article. Examples of extender pigments include inorganic particles such as silica, alumina, calcium carbonate, aluminosilicate, and barium sulfate, and organic particles such as polyethylene, urethane resin, polycarbonate, and polyamide (nylon). The shape of the extender pigment is not particularly limited, but is preferably polyhedral, spherical, scaly, etc. The average particle size of the extender pigment is usually about 1 to 10 μm, preferably 3 to 8 μm.

[0078] If necessary, the cured material layer may contain a colorant to be colored to a desired hue, brightness, and saturation. The colorant may be appropriately selected from the same colorants as those used in the colored layer and the design layer described below. By coloring the cured material layer with a colorant to an appropriate color (hue, brightness, and saturation), the design appearance can be improved, and discoloration of the cured material layer caused by light, etc. can be made less noticeable by coloring, which, combined with the discoloration reduction effect of adding a light stabilizer, can further improve the discoloration reduction effect of the cured material layer.

[0079] <Thickness> The thickness of the cured product layer can be, for example, from 1.0 μm to 10,000 μm in view of the balance between processing characteristics and scratch resistance. When the antiviral article is composed of a single layer of the cured material, it is preferable that the thickness of the cured material layer is relatively large. On the other hand, in the case of a form in which a cured product layer is formed by coating on a substrate, it is preferable that the thickness of the cured product layer is thin, taking into consideration that the substrate is responsible for self-supporting properties and durability against external forces, that the antiviral effect saturates at a certain thickness, and that an increase in the thickness of the cured product layer leads to disadvantages such as a decrease in post-processing suitability and a rise in material costs, etc. Specifically, from the viewpoint of a balance between processing properties and scratch resistance, the thickness of the cured product layer is preferably 1.5 μm to 30 μm, more preferably 2 μm to 20 μm, and even more preferably 3 μm to 15 μm.

[0080] <Formation method> The cured material layer can be formed, for example, by applying, drying, and curing an ink for the cured material layer, which contains materials constituting the cured material layer (one or more hindered amine compounds selected from NH-type hindered amine compounds and NR-type hindered amine compounds, a curable resin composition, an antiviral agent, etc.), and a solvent added as needed. The cured material layer can also be formed by applying, drying, and curing the ink for the cured material layer on a substrate having releasability to form a cured material layer, and then transferring the cured material layer to another substrate, etc.

[0081] <Layer structure> The antiviral article of the present disclosure may be a single layer of the cured product layer, or may have layers other than the cured product layer. An antiviral article consisting of a single layer of a cured material layer can be obtained, for example, by producing a laminate by forming a cured material layer on a substrate having releasability, and then peeling off the substrate having releasability from the laminate. Examples of layers other than the cured product layer that the antiviral article has include a substrate, a primer layer, a decorative layer, a transparent resin layer, an adhesive layer, etc. Examples of layer configurations of antiviral articles include the following (1) to (12). In the following (1) to (12), " / " indicates the interface between each layer. Examples of layers other than the cured layer that the antiviral article may have include functional layers such as a magnetic layer for magnetic recording, a conductive layer that functions as a circuit, copper wire for current, or electromagnetic wave shielding layer, a gas barrier layer that suppresses the transmission of gases such as water vapor and oxygen, a light-reflecting layer that reflects visible light with high reflectance, and an antireflection layer that suppresses reflection of visible light. These functional layers can be formed in any of the following laminate structures (1) to (12) depending on the function of each layer.

[0082] (1) Cured material layer (2) Base material / cured material layer (3) Substrate / Primer layer / Cured material layer (4) Base material / decorative layer / hardened material layer (5) Base material / transparent resin layer / cured material layer (6) Base material / adhesive layer / transparent resin layer / cured material layer (7) Base material / adhesive layer / decorative layer / transparent resin layer / cured material layer (8) Base material / decorative layer / adhesive layer / transparent resin layer / cured material layer (9) Substrate / Transparent Resin Layer / Primer Layer / Cured Material Layer (10) Substrate / Adhesive Layer / Transparent Resin Layer / Primer Layer / Cured Material Layer (11) Substrate / Adhesive Layer / Decorative Layer / Transparent Resin Layer / Primer Layer / Cured Material Layer (12) Base material / decorative layer / adhesive layer / transparent resin layer / primer layer / cured material layer

[0083] From the viewpoint of ease of handling, the antiviral article preferably has a configuration in which a cured product layer is provided on a substrate.

[0084] 《Base material》 The form of the substrate is not particularly limited, and may include flat forms such as films, sheets, and plates, as well as three-dimensional forms such as polyhedrons, polygonal prisms, cylinders, spheres, and spheroids. Although films, sheets, and plates are often referred to as films, sheets, and plates in the order of relatively thinnest thickness, no distinction is made between these three in this specification unless otherwise specified.

[0085] Examples of materials constituting the substrate include resins, metals, non-metallic inorganic materials, fibrous materials, and wood-based materials, and can be appropriately selected depending on the application.

[0086] The substrate may be a single layer, or may be a laminate of two or more layers made of the above materials. When the substrate is a laminate of two or more layers, it is preferable that two or more layers of different materials are laminated so that the properties of the materials in each layer complement each other. Examples of substrates made of two or more layers are A to J below. Note that " / " indicates the interface between each layer. (A) Resin / wood material (B) Resin / metal (C) Resin / fibrous materials (D) Resin / nonmetal inorganic material (E) Resin 1 / Resin 2 (F) Metal / wood materials (G) Metal / non-metallic inorganic materials (H) Metal / fibrous materials (I) Metal 1 / Metal 2 (J) Non-metallic inorganic materials / fibrous materials

[0087] In the above E, resin 1 and resin 2 represent different types of resins (for example, resin 1 is an olefin resin and resin 2 is an acrylic resin). Also, in the above H, metal 1 and metal 2 represent different types of metals (for example, metal 1 is copper and metal 2 is chromium).

[0088] Furthermore, when the substrate is a laminate such as those A to J above, a layer (adhesive layer or the like) for strengthening adhesive strength may be provided between the constituent layers of the laminate.

[0089] Resins used as the substrate include various synthetic resins and natural resins, including thermoplastic resins and curable resins.

[0090] Examples of thermoplastic resins include olefin resins such as polyethylene, polypropylene, polymethylpentene, ionomers, and various olefin-based thermoplastic elastomers; vinyl chloride resins such as polyvinyl chloride, polyvinylidene chloride, and vinyl chloride-vinyl acetate copolymers, each containing an appropriate amount of plasticizer as needed; polyester resins such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, ethylene glycol-terephthalic acid-isophthalic acid copolymers, and polyester-based thermoplastic elastomers; acrylic resins such as polymethyl (meth)acrylate, polyethyl (meth)acrylate, polybutyl (meth)acrylate, and methyl (meth)acrylate-butyl (meth)acrylate copolymers; polyamide resins typified by nylon 6 or nylon 66; cellulose resins such as cellulose triacetate, cellophane, and celluloid; styrene resins such as polystyrene, acrylonitrile-styrene copolymers, and acrylonitrile-butadiene-styrene copolymers (ABS); polyvinyl alcohol, ethylene-vinyl acetate copolymers, ethylene-vinyl alcohol copolymers, polycarbonate resins, polyarylate resins, and polyimide resins. Examples of the curable resin include the thermosetting resins and ionizing radiation curable resins exemplified for the cured product layer. Natural resins include natural rubber, pine resin, and amber.

[0091] Examples of metals that can be used as the substrate include aluminum or aluminum-containing alloys such as duralumin, iron or iron-containing alloys such as carbon steel and stainless steel, copper or copper-containing alloys such as brass and bronze, gold, silver, chromium, nickel, cobalt, tin, titanium, etc. Metal substrates that have been plated with these metals or the like can also be used.

[0092] Examples of non-metallic inorganic materials used as the substrate include non-ceramic ceramic materials such as cement, ALC (aerated lightweight concrete), gypsum, calcium silicate, and wood chip cement; ceramic ceramic materials such as porcelain, earthenware, glass, and enamel; and natural stones such as limestone (including marble), granite, and andesite.

[0093] Examples of fibrous materials used as substrates include tissue paper, kraft paper, wood-free paper, Japanese paper, titanium paper, linter paper, parchment paper, parchment paper, glassine paper, wallpaper backing paper, paperboard and gypsum board base paper, and other papers; woven or nonwoven fabrics made of fibers such as polyester resin fiber, acrylic resin fiber, protein-based or cellulose-based natural fibers such as silk, cotton, and hemp; glass fiber; and carbon fiber. These papers may further contain resins such as acrylic resin, styrene-butadiene rubber, melamine resin, and urethane resin (impregnated after papermaking or inserted during papermaking) to increase the strength between the fibers of the paper substrate or between other layers of the paper and to prevent fluffing. Examples of resin-added papers include inter-fiber reinforced paper and resin-impregnated paper. Furthermore, an example of a substrate in which a resin layer is laminated onto a fibrous material layer is wallpaper base paper, which is often used in the building materials field and has a resin layer such as a vinyl chloride resin layer, an olefin resin layer, or an acrylic resin layer laminated on the surface of wallpaper backing paper.

[0094] The shape and dimensions of the substrate are not particularly limited and may be appropriately selected depending on the intended use, desired performance properties and processability. When the substrate is a flat film, sheet, or plate, the thickness is a typical dimension in the design of the article. There are no particular restrictions on the thickness, but it is generally set to about 10 μm to 10 cm from the viewpoints of manufacturing processability, mechanical strength, ease of use and handling, and economic efficiency. In the case of a film or sheet, a thickness of about 20 μm to 500 μm is usually selected, and in the case of a plate, a thickness of about 1 mm to 2 cm is usually selected.

[0095] To improve adhesion between the substrate and other layers constituting the antiviral article or between the antiviral article and a member to be laminated thereto, one or both surfaces of the substrate can be subjected to a surface treatment such as a physical surface treatment by an oxidation method or a roughening method, or a chemical surface treatment. Examples of oxidation methods include corona discharge treatment, chromium oxidation treatment, flame treatment, hot air treatment, ozone-ultraviolet treatment, etc., and examples of roughening methods include sandblasting, solvent treatment, etc. These surface treatments are appropriately selected depending on the type of substrate, but corona discharge treatment is generally preferred in terms of the effect of the surface treatment and operability.

[0096] <Primer layer> The antiviral article preferably has a primer layer in contact with the substrate-side surface of the cured material layer. The primer layer improves adhesion between the substrate and the cured material layer, making it easier to ensure long-term interlayer adhesion when exposed to ultraviolet light (so-called weather-resistant adhesion) and improve scratch resistance. Examples of cases in which antiviral articles are exposed to ultraviolet rays include cases in which the antiviral article is installed, constructed, or used in places where sunlight containing ultraviolet light shines in, such as near a window; inside a kitchen, refrigerator, or cupboard where a sterilizing mercury lamp is installed; or outdoors where it is exposed to direct sunlight.

[0097] The primer layer is mainly composed of a binder resin, and may contain additives such as an ultraviolet absorber and a light stabilizer, if necessary. Preferred examples of binder resins include urethane resins, acrylic polyol resins, acrylic resins, ester resins, amide resins, butyral resins, styrene resins, urethane-acrylic copolymers, polycarbonate-based urethane-acrylic copolymers (urethane-acrylic copolymers derived from polymers (polycarbonate polyols) having carbonate bonds in the polymer main chain and two or more hydroxyl groups at the terminals and side chains), vinyl chloride-vinyl acetate copolymer resins, vinyl chloride-vinyl acetate-acrylic copolymer resins, chlorinated propylene resins, nitrocellulose resins (nitrocellulose), and cellulose acetate resins. These may be used alone or in combination. Furthermore, the binder resin may be a resin obtained by adding a curing agent such as an isocyanate-based curing agent or an epoxy-based curing agent to the resin and crosslinking and curing the resin. Among these, a polyol-based resin such as an acrylic polyol resin is preferably crosslinked and cured with an isocyanate-based curing agent, and an acrylic polyol resin is more preferably crosslinked and cured with an isocyanate-based curing agent.

[0098] The primer layer preferably contains an ultraviolet absorber and / or a light stabilizer to further improve weather resistance. General-purpose ultraviolet absorbers and light stabilizers can be used.

[0099] The thickness of the primer layer is preferably 0.01 μm or more and 10 μm or less, more preferably 0.7 μm or more and 8 μm or less, and even more preferably 1.0 μm or more and 6 μm or less.

[0100] The antiviral article may have a back primer layer on the side of the substrate opposite the cured product layer for the purpose of improving adhesion to an adherend, etc. The antiviral article may also have a pressure-sensitive adhesive layer on the side of the substrate opposite the cured layer for the purpose of bonding to an adherend. It is preferable to form a peelable separator on the surface of the pressure-sensitive adhesive layer opposite the substrate.

[0101] 《Transparent resin layer》 The antiviral article may have a transparent resin layer between the substrate and the cured product layer from the viewpoint of increasing strength, etc. In particular, when the substrate is a resin substrate, it is preferable that the antiviral article have a transparent resin layer. When the antiviral article has a primer layer, the transparent resin layer is preferably located between the substrate and the primer layer. When the antiviral article has a decorative layer, the transparent resin layer is preferably located between the decorative layer and the cured product layer from the viewpoint of protecting the decorative layer.

[0102] Resins constituting the transparent resin layer include polyolefin resins, polyester resins, polycarbonate resins, acrylonitrile-butadiene-styrene resins (hereinafter also referred to as "ABS resins"), acrylic resins, vinyl chloride resins, etc. Among these, polyolefin resins are preferred from the viewpoint of processability. Furthermore, two or more of these exemplified resins may be laminated or mixed for use. From the viewpoint of processability, the content of polyolefin resin in the transparent resin layer is preferably 50% by mass or more, more preferably 70% by mass or more, and even more preferably 90% by mass or more, of the total resin components of the transparent resin layer.

[0103] Examples of polyolefin resins for the transparent resin layer include polyethylene (low density, medium density, high density), polypropylene, polymethylpentene, polybutene, ethylene-propylene copolymer, propylene-butene copolymer, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-propylene-butene copolymer, etc. Among these, polyethylene (low density, medium density, high density), polypropylene, ethylene-propylene copolymer, and propylene-butene copolymer are preferred, and polypropylene is more preferred.

[0104] The transparent resin layer may contain additives such as an ultraviolet absorber, a light stabilizer, and a colorant. The thickness of the transparent resin layer is preferably from 20 μm to 150 μm, more preferably from 40 μm to 120 μm, and even more preferably from 60 μm to 100 μm, from the viewpoint of a balance between scratch resistance, processability, and weather resistance.

[0105] Decorative Layer From the viewpoint of improving the design, the antiviral article preferably has a decorative layer at any location on the antiviral article. From the viewpoint of improving the weather resistance of the decorative layer, the decorative layer is preferably formed on a side closer to the substrate. For example, when the antiviral article has a primer layer, the decorative layer is preferably located between the substrate and the primer layer. Furthermore, when the antiviral article has a transparent resin layer, the decorative layer is preferably located between the substrate and the transparent resin layer.

[0106] The decorative layer may be formed on the entire surface of the antiviral article, or may be formed only on a part of it. When the decorative layer covers the outer surface of the cured material layer, it is preferable to form the decorative layer only on a partial region so as not to inhibit the expression of the antiviral properties.

[0107] Examples of the decorative layer include a colored layer formed by applying ink in a solid manner, a patterned layer formed by printing ink as a pattern, and a thin metal film. Examples of patterns (designs) that can be expressed by the decorative layer include wood grain patterns such as tree rings and vessel grooves on the surface of wooden boards; stone grain patterns on the surface of stone slabs such as marble and granite; fabric grain patterns on the surface of fabric; leather grain patterns on the surface of leather; tile patterns including grooves; brickwork patterns including grooves; sand grain patterns; pear-skin patterns; patterns consisting of an arrangement of multiple concave and convex stripes extending in parallel directions (so-called ``line-like concave and convex patterns'' or ``ray-carved patterns''); and abstract patterns such as geometric patterns, letters, figures, polka dots, and floral designs.

[0108] The ink used for the colored layer and the design layer is a mixture of a binder resin with an appropriate amount of a colorant such as a pigment or dye, an extender pigment, a solvent, a stabilizer, a plasticizer, a catalyst, a curing agent, an ultraviolet absorber, a light stabilizer, etc. The binder resin for the colored layer and the design layer is not particularly limited, and examples thereof include urethane resin, acrylic polyol resin, acrylic resin, ester resin, amide resin, butyral resin, styrene resin, urethane-acrylic copolymer, vinyl chloride-vinyl acetate copolymer resin, vinyl chloride-vinyl acetate-acrylic copolymer resin, chlorinated propylene resin, nitrocellulose resin, cellulose acetate resin, etc. In addition, various types of resins can be used, such as one-component curing resins and two-component curing resins containing a curing agent such as an isocyanate compound.

[0109] The colorant is not particularly limited, and examples thereof include inorganic pigments such as carbon black (ink), iron black, titanium white, antimony white, yellow lead, titanium yellow, red iron oxide, cadmium red, ultramarine blue, and cobalt blue; organic pigments or dyes such as quinacridone red, isoindolinone yellow, nickel azo complex, phthalocyanine blue, and azomethine azo black; metal pigments consisting of flaky flakes of aluminum, brass, or the like; and pearlescent pigments consisting of flaky flakes of titanium dioxide-coated mica, basic lead carbonate, or the like. The content of the colorant is preferably 5 parts by mass or more and 90 parts by mass or less, more preferably 15 parts by mass or more and 80 parts by mass or less, and even more preferably 30 parts by mass or more and 70 parts by mass or less, relative to 100 parts by mass of the resin constituting the colored layer and the pattern layer.

[0110] The color layer and the design layer may contain additives such as ultraviolet absorbers, light stabilizers, and colorants. The thickness of the colored layer and the patterned layer may be selected appropriately depending on the desired pattern, but from the viewpoint of concealing the base color of the adherend and improving the design, it is preferably 0.5 μm or more and 20 μm or less, more preferably 1 μm or more and 10 μm or less, and even more preferably 2 μm or more and 5 μm or less.

[0111] Examples of metal thin films include thin films of simple metal elements such as gold, silver, copper, tin, iron, indium, nickel, chromium, and cobalt; thin films of alloys containing two or more of the above metal elements; etc. Examples of alloys include brass, bronze, and stainless steel. The metal thin film can have a thickness of about 0.1 μm to 1 μm.

[0112] 《Adhesive layer》 The antiviral article may have an adhesive layer.

[0113] For example, when the antiviral article has a transparent resin layer, it is preferable to form an adhesive layer between the substrate and the transparent resin layer in order to improve the adhesion between the two layers. When a decorative layer is further provided between the substrate and the transparent resin layer, the positional relationship between the adhesive layer and the decorative layer is not particularly limited. Specifically, the decorative layer, adhesive layer, and transparent resin layer may be provided in this order from the side closest to the substrate, or the adhesive layer, decorative layer, and transparent resin layer may be provided in this order from the side closest to the substrate layer. Furthermore, as described above, when the substrate is a laminate of two or more layers, an adhesive layer may be provided between the layers constituting the substrate.

[0114] The adhesive layer can be made of, for example, an adhesive such as a urethane adhesive, an acrylic adhesive, an epoxy adhesive, a rubber adhesive, etc. Among these adhesives, a urethane adhesive is preferred in terms of adhesive strength. Examples of urethane adhesives include adhesives that utilize two-component curing urethane resins containing various polyol compounds such as polyether polyol, polyester polyol, and acrylic polyol, and a curing agent such as an isocyanate compound.

[0115] The thickness of the adhesive layer is preferably 0.1 μm or more and 30 μm or less, more preferably 1 μm or more and 15 μm or less, and even more preferably 2 μm or more and 10 μm or less.

[0116] The decorative layer, adhesive layer, and primer layer described above can be formed, for example, by applying a coating liquid containing a composition for forming each layer using a known method such as gravure printing, bar coating, roll coating, reverse roll coating, or comma coating, and then drying and curing the coating as necessary.

[0117] <Forming processing> The antiviral article may be given a desired uneven shape (also called an uneven pattern) by a shaping treatment such as embossing. When embossing is performed, for example, the antiviral article is heated to preferably from 80°C to 260°C, more preferably from 85°C to 200°C, and even more preferably from 100°C to 180°C, and then an embossing plate is pressed against the antiviral article. The area where the embossing plate is pressed is preferably the cured product layer side of the antiviral article. <Antiviral activity value> The antiviral article of the present disclosure preferably has an antiviral activity value greater than 0.0 as measured by the following method. To achieve sufficient antiviral performance, the antiviral activity value is more preferably 1.0 or greater, and even more preferably 2.0 or greater. The following method complies with ISO 21702. <<Method for measuring antiviral activity value>> 0.4 ml of virus solution is dropped onto a 5 cm square test piece (antiviral treated product and untreated product) and covered with a 4 cm square film. This test piece is left to stand at 25°C for 24 hours. After standing, the virus on the test piece is washed off and recovered, and the virus infectivity is measured. The antiviral activity value is calculated using the following formula (1). R=Ut-At (1) R: Antiviral activity value Ut: Virus infectivity (PFU / cm) after leaving the unprocessed product for 24 hours 2 ) the average of the base 10 logarithms At: Virus infectivity (PFU / cm) of antiviral processed product after leaving it for 24 hours 2 ) the average of the base 10 logarithms

[0118] <Application> The antiviral article of the present disclosure can be used for various purposes, including the following (1) to (12): When the antiviral article of the present disclosure is used as the various surface materials described below, a known adhesive layer may be interposed, as necessary, between the surface material and the adherend to which the surface material is laminated. Usable adhesives include heat-fusion adhesives that bond by heating and melting followed by cooling and solidifying, thermosetting adhesives that bond by a polymerization or crosslinking reaction caused by heating, ionizing radiation-curing adhesives that bond by a polymerization or crosslinking reaction caused by exposure to ionizing radiation such as ultraviolet rays or electron beams, and pressure-sensitive adhesives that bond by pressure alone, utilizing the adhesive properties of the adhesive itself. (1) Surface materials for interior walls, floors, ceilings, etc. of buildings such as houses, offices, stores, hospitals, and clinics. (2) Surface materials for exterior parts such as exterior walls, roofs, eaves ceilings, door pockets, etc. of buildings such as houses, offices, stores, hospitals, and clinics. (3) Surface materials for building fixtures such as windows, window frames, doors, and door frames (interior or exterior parts); surface materials for fixture accessories (handles, etc.); surface materials for building fixture jigs. (4) Surface materials for fixtures such as handrails, waist walls, moldings, thresholds, lintels, and top boards. (5) Surface materials for outdoor (exterior) parts such as fences, gates, drying rack pillars and handrails. (6) Surface materials for furniture such as chests of drawers, desks, chairs, cupboards, kitchen sinks, etc.; surface materials for furniture accessories (handles, etc.); surface materials for furniture fixtures. (7) Surface materials for the housings of various home appliances such as television receivers, radio receivers, refrigerators, microwave ovens, washing machines, electric fans, and air conditioners; surface materials for accessories of home appliances (handles, switches, touch panels, etc.); surface materials for fixtures of home appliances. (8) Surface materials for office automation equipment such as electronic copying machines, facsimiles, printers, personal computers, and other computing equipment; surface materials for the housings of various office automation equipment such as ATM machines at financial institutions such as banks and post offices; surface materials for accessories of various office automation equipment (keyboards, touch panels, etc.); surface materials for jigs of various office automation equipment. (9) Surface materials for the interior or exterior parts (walls, floors, ceilings, handrails, supports, control panels, levers, handles, steering wheels, and other control equipment) of vehicles such as automobiles, railway cars, ships, and aircraft. (10) Partitions in various buildings; shielding plates or curtains to prevent droplet infection of viruses at counters, accounting counters, etc. of stores, offices, government offices, etc.; face protection equipment such as protective masks (face guards) and protective glasses (goggles); or surface materials for these. (11) Business forms such as slips; bankbooks; cards such as cash cards, credit cards, and point cards of financial institutions; or the surface materials of these. (12) Glass, resin, etc. bottles; metal cans; resin soft packaging materials such as resin retort containers; packaging materials such as various tubes; or the surface materials of these.

[0119] [Antiviral resin composition] The antiviral resin composition of the present disclosure is a resin composition including a curable resin composition, an antiviral agent in which silver ions are supported on or contained in a carrier, and a light stabilizer, wherein the light stabilizer includes one or more hindered amine compounds selected from an NH-type hindered amine compound and an NR-type hindered amine compound.

[0120] Embodiments of the "curable resin composition," "antiviral agent comprising a carrier carrying or containing silver ions," and "NH-type hindered amine compound and NR-type hindered amine compound" in the antiviral resin composition of the present disclosure are the same as the embodiments of the "curable resin composition," "antiviral agent comprising a carrier carrying or containing silver ions," and "NH-type hindered amine compound and NR-type hindered amine compound" in the antiviral article of the present disclosure described above.

[0121] The antiviral resin composition of the present disclosure may contain an antioxidant, an ultraviolet absorber, and the like, as necessary. The embodiments of the “antioxidant” and “ultraviolet absorber” in the antiviral resin composition of the present disclosure are the same as the embodiments of the “antioxidant” and “ultraviolet absorber” in the antiviral article of the present disclosure described above.

[0122] <Solvent> The antiviral resin composition of the present disclosure preferably contains a solvent. Examples of the solvent include ketones (acetone, methyl ethyl ketone, methyl isobutyl ketone (MIBK), cyclohexanone, etc.), ethers (dioxane, tetrahydrofuran, etc.), aliphatic hydrocarbons (hexane, etc.), alicyclic hydrocarbons (cyclohexane, etc.), aromatic hydrocarbons (toluene, xylene, etc.), halogenated carbons (dichloromethane, dichloroethane, etc.), esters (methyl acetate, ethyl acetate, butyl acetate, etc.), alcohols (isopropanol, butanol, cyclohexanol, etc.), cellosolves (methyl cellosolve, ethyl cellosolve, etc.), glycol ethers (propylene glycol monomethyl ether acetate, etc.), cellosolve acetates, sulfoxides (dimethyl sulfoxide, etc.), amides (dimethylformamide, dimethylacetamide, etc.), and mixtures thereof may also be used.

[0123] The content of the solvent is preferably 10 to 60 mass %, and more preferably 30 to 50 mass %, of the total amount of the antiviral resin composition (ink for the cured product layer).

[0124] This disclosure includes the following [1] to

[14] . [1] An antiviral article having a cured layer, the cured layer comprising a cured product of a curable resin composition, an antiviral agent in which a carrier carries or contains silver ions, and a light stabilizer, wherein the light stabilizer comprises one or more hindered amine compounds selected from an NH-type hindered amine compound and an NR-type hindered amine compound. [2] The antiviral article according to [1], wherein the antiviral agent is contained in an amount of 0.1 to 20.0 parts by mass per 100 parts by mass of the cured product. [3] The antiviral article according to [1] or [2], wherein the antiviral agent has an average particle size of 0.1 to 10.0 μm. [4] The antiviral article according to any one of [1] to [3], wherein D / T is 1.0 or less, where D is the average particle size of the antiviral agent and T is the thickness of the cured product layer. [5] The antiviral article according to any one of [1] to [4], wherein at least a portion of the antiviral agent protrudes from the surface of the cured product layer. [6] The antiviral article according to any one of [1] to [5], comprising 20 to 1000 parts by mass of one or more hindered amine compounds selected from the NH-type hindered amine compounds and the NR-type hindered amine compounds per 100 parts by mass of the antiviral agent. [7] The antiviral article according to any one of [1] to [6], wherein the one or more hindered amine compounds are NR-type hindered amine compounds. [8] The antiviral article according to [7], wherein the NR-type hindered amine compound is a 2,2,6,6-tetramethylpiperidine skeleton in which a hydrogen atom bonded to a nitrogen atom is substituted with an alkyl group, and the alkyl group has 1 to 12 carbon atoms. [9] The antiviral article according to any one of [1] to [8], wherein the cured product layer further contains an antioxidant.

[10] The antiviral article according to [9], wherein the antioxidant is a compound having a phosphorous acid structure represented by the following general formula (1): [ka]

[11] The antiviral article according to [9] or

[10] , wherein the antioxidant is a compound represented by the following general formula (1-2-1): [ka] [In the formula, each R independently represents a linear alkyl group having 12 to 15 carbon atoms.]

[12] The antiviral article according to any one of [1] to

[11] , wherein the cured product layer further contains an ultraviolet absorber.

[13] The antiviral article according to any one of [1] to

[12] , which comprises the cured product layer on a substrate.

[14] A resin composition comprising a curable resin composition, an antiviral agent comprising a carrier carrying or containing silver ions, and a light stabilizer, wherein the light stabilizer comprises one or more hindered amine compounds selected from an NH-type hindered amine compound and an NR-type hindered amine compound. [Example]

[0125] Next, the present disclosure will be described in more detail by way of examples, but the present disclosure is not limited to these examples in any way.

[0126] 1. Preparation and evaluation of antiviral products -Production of antiviral products- [Example 1] The following components were mixed and stirred to prepare ink a for the cured product layer (antiviral resin composition a) of Example 1.

[0127] <Ink a for cured layer (antiviral resin composition a)> ·Ionizing radiation curable resin composition 100 parts by mass (Trifunctional urethane acrylate oligomer with a weight-average molecular weight of 4000) 3 parts by mass of an antiviral agent containing silver ions in a carrier (Product number "PG711" manufactured by Koa Glass Co., Ltd., carrier is glass, average particle size 3 μm) NR-type hindered amine compound 2 parts by mass (BASF product number "Tinuvin144") UV absorber 2 parts by weight (Hydroxyphenyltriazine, TINUVIN479, manufactured by BASF) Extender pigment (irregular silica) 16 parts by weight (Average particle size: 10μm) Solvent 50 parts by weight (Ethyl Acetate)

[0128] Next, a decorative layer ink containing a two-component curing acrylic-urethane resin and a colorant was applied by gravure printing to one side of a substrate (a 60 μm thick titanium oxide-containing polypropylene resin sheet) that had been subjected to corona discharge treatment on both sides, and then dried to form a 3 μm thick wood grain pattern decorative layer. Next, a 3 μm thick adhesive layer made of a urethane resin adhesive was formed on the decorative layer, and then a polypropylene resin was hot-melt extruded onto the adhesive layer using a T-die extruder to form an 80 μm thick transparent resin layer. Next, the surface of the transparent resin layer was subjected to a corona discharge treatment, and then a primer layer ink having the following composition was applied onto the transparent resin layer by gravure printing and dried to form a primer layer having a thickness of 2 μm. Next, the ink a for cured layer (antiviral resin composition a) was applied onto the primer layer by roll coating to form an uncured cured layer, which was then dried at 60°C for 1 minute and then irradiated with an electron beam (acceleration voltage: 175 kV, 5 Mrad (50 kGy)) to crosslink and cure the curable resin composition (ionizing radiation-curable resin composition) to form a cured layer with a thickness of 15 μm, thereby obtaining the antiviral article of Example 1. Note that the ink a for cured layer (antiviral resin composition a) was applied onto the primer layer immediately after its preparation.

[0129] <Ink for primer layer> 100 parts by weight of a mixture of urethane-acrylic copolymer and acrylic polyol Hexamethylene diisocyanate 5 parts by mass

[0130] [Example 2] Ink b for cured material layer (antiviral resin composition b) of Example 2 was prepared by changing the NR-type hindered amine compound of ink a for cured material layer (antiviral resin composition a) to an NR-type hindered amine compound (BASF product number "Tinuvin 765"). Next, an antiviral article of Example 2 was obtained in the same manner as in Example 1, except that the ink a for cured product layer (antiviral resin composition a) was changed to the ink b for cured product layer (antiviral resin composition b).

[0131] [Example 3] Ink c for cured material layer (antiviral resin composition c) of Example 3 was prepared by changing the NR-type hindered amine compound of ink a for cured material layer (antiviral resin composition a) to an NR-type hindered amine compound (product number "LS3410" from Nippon Nyukazai Co., Ltd., which has an ethylenic double bond polymerizable with the curable resin composition). Next, an antiviral article of Example 3 was obtained in the same manner as in Example 1, except that the ink a for cured product layer (antiviral resin composition a) was changed to the ink c for cured product layer (antiviral resin composition c).

[0132] [Example 4] Ink d for cured material layer (antiviral resin composition d) of Example 4 was prepared by changing the NR hindered amine compound of ink a for cured material layer (antiviral resin composition a) to an NH hindered amine compound (BASF product number "Tinuvin 770DF"). Next, an antiviral article of Example 4 was obtained in the same manner as in Example 1, except that the ink a for cured product layer (antiviral resin composition a) was changed to the ink d for cured product layer (antiviral resin composition d).

[0133] [Example 5] Ink e for cured material layer (antiviral resin composition e) of Example 5 was prepared by adding 1 part by mass of a phosphorus-based antioxidant (phosphorus-based antioxidant of the above formula 1-1-1) to ink a for cured material layer (antiviral resin composition a). Next, an antiviral article of Example 5 was obtained in the same manner as in Example 1, except that the ink a for cured product layer (antiviral resin composition a) was changed to the ink e for cured product layer (antiviral resin composition e).

[0134] [Example 6] The NR-type hindered amine compound in ink a for cured material layer (antiviral resin composition a) was changed to an NR-type hindered amine compound (product number "LS3410" from Nippon Nyukazai Co., Ltd., which has an ethylenic double bond polymerizable with the curable resin composition), and the amount added was changed from 2 parts by mass to 5 parts by mass, to prepare ink f for cured material layer of Example 6 (antiviral resin composition f; this is the ink c for cured material layer of Example 3 with an increased amount of the hindered amine compound added). Next, an antiviral article of Example 6 was obtained in the same manner as in Example 1, except that the ink a for cured product layer (antiviral resin composition a) was changed to the ink f for cured product layer (antiviral resin composition f).

[0135] [Example 7] Ink g for cured material layer (antiviral resin composition g) of Example 7 was prepared by changing the antiviral agent in ink a for cured material layer (antiviral resin composition a) to "Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd., an antiviral agent comprising a carrier containing or carrying silver ions, average particle size: 3.0 μm," changing the amount added from 3 parts by mass to 0.5 parts by mass, and further changing the NR-type hindered amine compound to an NR-type hindered amine compound (Nippon Nyukazai Co., Ltd., product number LS3410, which has an ethylenic double bond polymerizable with the curable resin composition). Next, an antiviral article of Example 7 was obtained in the same manner as in Example 1, except that the ink a for cured product layer (antiviral resin composition a) was changed to the ink g for cured product layer (antiviral resin composition g).

[0136] [Example 8] In ink a for cured material layer (antiviral resin composition a), the antiviral agent was changed to "Neosinthol AV-18F manufactured by Sumika Environmental Science Co., Ltd., an antiviral agent comprising a carrier containing or carrying silver ions, average particle size: 3.0 μm," and the amount added was changed from 3 parts by mass to 0.5 parts by mass. Furthermore, the NR-type hindered amine compound was changed to an NR-type hindered amine compound (Nippon Nyukazai Co., Ltd., product number "LS3410," which has an ethylenic double bond polymerizable with the curable resin composition), and the amount added was changed from 2 parts by mass to 5 parts by mass, to prepare ink h for cured material layer of Example 8 (antiviral resin composition h; the amount of hindered amine compound added was increased from that of ink g for cured material layer of Example 7). Next, an antiviral article of Example 8 was obtained in the same manner as in Example 1, except that the ink a for cured product layer (antiviral resin composition a) was changed to the ink h for cured product layer (antiviral resin composition h).

[0137] [Comparative Example 1] Ink i for cured product layer (antiviral resin composition i) of Comparative Example 1 was prepared by removing the NR-type hindered amine compound from ink a for cured product layer (antiviral resin composition a). Next, an antiviral article of Comparative Example 1 was obtained in the same manner as in Example 1, except that the ink a for cured product layer (antiviral resin composition a) was changed to the ink i for cured product layer (antiviral resin composition i).

[0138] Comparative Example 2 Ink j for cured material layer (antiviral resin composition j) of Comparative Example 2 was prepared by changing the NR hindered amine compound of ink a for cured material layer (antiviral resin composition a) to a NOR hindered amine compound (BASF product number "Tinuvin 123"). Next, an antiviral article of Comparative Example 2 was obtained in the same manner as in Example 1, except that the ink a for cured product layer (antiviral resin composition a) was changed to the ink j for cured product layer (antiviral resin composition j).

[0139] Comparative Example 3 Ink k for cured material layer (antiviral resin composition k) of Comparative Example 3 was prepared by changing the NR hindered amine compound of ink a for cured material layer (antiviral resin composition a) to a NOR hindered amine compound (BASF product number "Tinuvin 152"). Next, an antiviral article of Comparative Example 3 was obtained in the same manner as in Example 1, except that the ink a for cured product layer (antiviral resin composition a) was changed to the ink k for cured product layer (antiviral resin composition k).

[0140] -Evaluation of discoloration of antiviral items- Regarding the antiviral articles of the Examples and Comparative Examples, * a * b * The measurement was performed in an atmosphere with a temperature of 23°C ± 5°C and a humidity of 40 to 65% RH. The measurement device used was a spectrophotometer ("Spectrolino" (model number), manufactured by GretagMacbeth). Next, the antiviral articles of the examples and comparative examples were subjected to two cycles (48 hours) of accelerated weather resistance testing using a metal halide lamp (MWOM) (a test in which one cycle consisted of irradiating ultraviolet light for 20 hours under the irradiation conditions below, followed by condensation for 4 hours under the condensation conditions below). * a * b * The values ​​were measured. The color difference (ΔE * ab) were calculated, and the results are shown in Table 1. Color difference (ΔE * ab) are measured values ​​immediately after production *1 , a *1 and b *1 The measured value after the accelerated weathering test is L *2 , a *2 and b *2 Then, it can be calculated using the following formula: ΔE * ab=〔(L *2 -L *1 ) 2 +(a*2 -a *1 ) 2 +(b * 2-a *2 ) 2 〕 1 / 2

[0141] <Test equipment> Product name "Daipla Metal Weather" manufactured by Daipla Wintes Co., Ltd. <Irradiation conditions> Illuminance: 65mW / cm 2 Black panel temperature: 63°C, chamber humidity: 50%RH, time: 20 hours <Condensation conditions> Illuminance: 0mW / cm 2 , Humidity inside the tank: 98%RH, Time: 4 hours

[0142] -Antiviral activity value- The antiviral activity values ​​of the antiviral articles of the Examples and Comparative Examples were measured according to the "Method for measuring antiviral activity value" in the main text of the specification. The antiviral activity values ​​were measured against two types of viruses: influenza virus and feline calicivirus.

[0143] [Table 1]

[0144] As shown in Table 1, it can be confirmed that the antiviral articles of the examples can suppress discoloration. Furthermore, it can be confirmed that the antiviral articles of the examples have good antiviral properties, as shown in Table 1. It is believed that the hindered amine compound does not affect the antiviral activity value.

[0145] 2. Preparation or preparation and evaluation of antiviral resin composition -Preparation or preparation of antiviral resin composition- As the antiviral resin compositions of Reference Examples 1 to 4, the above antiviral resin compositions a, e, i, and j were prepared. Furthermore, the NR-type hindered amine compound was removed from the ink a for the cured product layer (antiviral resin composition a) and 1 part by mass of a phosphorus-based antioxidant (the phosphorus-based antioxidant of the above formula 1-1-1) was added instead, to prepare an antiviral resin composition l of Reference Example 5. Furthermore, the NR-type hindered amine compound was removed from the ink a for the cured product layer (antiviral resin composition a) and 1 part by mass of a phosphorus-based antioxidant (the phosphorus-based antioxidant of the above formula 1-2-1) was added instead, to prepare an antiviral resin composition l of Reference Example 6.

[0146] -Evaluation of discoloration of antiviral resin compositions- In a room shielded from external light, 30 g of the antiviral resin composition of the Reference Example was placed in a glass bottle (manufactured by AS ONE Corporation, product number: Labolan screw cap bottle, 50 ml) and the lid was closed to prepare a sample for evaluation. At this stage, the color of the antiviral resin composition in each sample was white, and no difference was observed in color from a composition to which no antiviral agent had been added (a composition obtained by removing the antiviral agent from the antiviral resin composition of the Reference Example). The sample was then placed on a desk and left indoors under fluorescent lighting for 24 hours, after which the color of the antiviral resin composition in the sample was visually evaluated. The brightness of the fluorescent lighting on the desk was set to a range of 500 to 1,000 lux. The results are shown in Table 2.

[0147] [Table 2]

[0148] The results in Table 2 confirm that the inclusion of a phosphorus-based antioxidant in the antiviral resin composition can suppress discoloration due to light while the antiviral resin composition is in its state (compositions e, l, and m contain a phosphorus-based antioxidant). These results demonstrate that antiviral resin compositions containing a phosphorus-based antioxidant in addition to one or more hindered amine compounds selected from NH-type hindered amine compounds and NR-type hindered amine compounds can be easily handled without requiring storage in a dark place. The results of Examples 1 to 8 in Table 1 also demonstrate that discoloration can be suppressed even when the antiviral resin composition does not contain a phosphorus-based antioxidant, as long as a cured product layer is formed from the composition before exposure to a large amount of light. In other words, the inclusion of a phosphorus-based antioxidant is a preferred embodiment of the present disclosure. [Explanation of symbols]

[0149] 100: Antiviral products 10: Cured material layer 11: Cured product of curable resin composition 12: Antiviral agent containing or carrying silver ions on a carrier 20: Base material

Claims

[Claim 1] An article having a cured material layer, The article has a substrate, a decorative layer, a transparent resin layer, and the cured product layer in this order, the cured material layer includes a cured material of a curable resin composition, an antiviral agent in which silver ions are supported on or contained in a carrier, and a light stabilizer, An antiviral article comprising, as the light stabilizer, one or more hindered amine compounds selected from NH-type hindered amine compounds and NR-type hindered amine compounds.

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