Antiviral resin material, method for producing antiviral resin molded article, and antiviral resin molded article

Abstract

Provided is an antiviral resin material which can effectively improve the antiviral properties of an antiviral agent. The antiviral resin material according to the present invention comprises: a thermoplastic resin including a polyolefin resin, an acrylonitrile-butadiene-styrene resin, or a polyvinyl chloride resin; an antiviral agent; and a compound having a hydrophilic group and different from the antiviral agent. The antiviral agent includes a sulfonic acid-based antiviral agent, a silver-based antiviral agent, or a carboxylic acid-based antiviral agent.

Description

Technical Field

[0001] The present invention relates to an antiviral resin material containing an antiviral agent, and also to a method for producing an antiviral resin molded product and an antiviral resin molded product. Background Art

[0002] In recent years, infectious diseases caused by viruses such as severe acute respiratory syndrome (SARS) virus, avian influenza virus, foot-and-mouth disease virus, new influenza virus, and new coronavirus have become social problems.

[0003] Therefore, we are studying the use of antiviral molded products for parts that are touched by an unspecified number of people or parts that are likely to be touched.

[0004] Patent Document 1 below discloses a resin molded article comprising a polymer resin, stearyl diethanolamine and palmityl diethanolamine. In the resin molded article, the content of palmityl diethanolamine is 2 to 25 parts by mass relative to 100 parts by mass of the total amount of stearyl diethanolamine and palmityl diethanolamine. The polymer resin comprises polyolefin or polyamide.

[0005] Prior art literature

[0006] Patent Literature

[0007] Patent document 1: WO2022 / 131331A1 Summary of the invention

[0008] Technical problem to be solved by the invention

[0009] In the conventional resin molded products described in Patent Document 1, even if an antiviral agent is included, the antiviral property of the antiviral agent may not be fully exhibited. In order to fully improve the antiviral property of the resin molded products, a large amount of antiviral agent must be formulated in the conventional resin molded products, which may increase the manufacturing cost.

[0010] The object of the present invention is to provide an antiviral resin material that can effectively improve the antiviral activity of an antiviral agent. In addition, the object of the present invention is also to provide a method for producing an antiviral resin molded product that can effectively improve the antiviral activity of an antiviral agent and an antiviral resin molded product.

[0011] Solutions to technical problems

[0012] According to a broad aspect of the present invention, an antiviral resin material is provided, which includes a thermoplastic resin, an antiviral agent, and a compound different from the antiviral agent and having a hydrophilic group, wherein the thermoplastic resin includes a polyolefin resin, an acrylonitrile-butadiene-styrene resin or a polyvinyl chloride resin, and the antiviral agent includes a sulfonic acid antiviral agent, a silver antiviral agent or a carboxylic acid antiviral agent.

[0013] In a specific aspect of the antiviral resin material of the present invention, the content of the compound having a hydrophilic group other than the antiviral agent is 1 wt % to 50 wt % in 100 wt % of the antiviral resin material.

[0014] In a specific aspect of the antiviral resin material of the present invention, the content of the antiviral agent in 100 wt % of the antiviral resin material is 0.5 wt % or more and 10 wt % or less.

[0015] In a specific aspect of the antiviral resin material of the present invention, the thermoplastic resin includes the polyolefin resin.

[0016] In a specific aspect of the antiviral resin material of the present invention, the antiviral agent includes the sulfonic acid antiviral agent.

[0017] In a specific aspect of the antiviral resin material of the present invention, the compound having a hydrophilic group and different from the antiviral agent includes a polyethylene glycol compound, cellulose, or polyvinyl pyrrolidone.

[0018] In a specific aspect of the antiviral resin material of the present invention, the antiviral resin material is resin particles.

[0019] In certain specific aspects of the antiviral resin material of the present invention, the antiviral resin material is a masterbatch.

[0020] In a specific aspect of the antiviral resin material of the present invention, the antiviral resin material is a material for injection molding.

[0021] According to a broad aspect of the present invention, there is provided a method for producing an antiviral resin molded article, comprising: a molding step of molding the antiviral resin material to obtain the antiviral resin molded article.

[0022] In a specific aspect of the method for manufacturing an antiviral resin molded product of the present invention, the manufacturing method comprises a mixing step, in which the antiviral resin material is mixed with other resin materials to obtain a mixed resin material containing the antiviral resin material and the other resin materials, and in the molding step, the mixed resin material is molded.

[0023] According to a broad aspect of the present invention, there is provided an antiviral resin molded product comprising a thermoplastic resin, an antiviral agent, and a compound different from the antiviral agent and having a hydrophilic group, wherein the thermoplastic resin comprises a polyolefin resin, an acrylonitrile-butadiene-styrene resin, or a polyvinyl chloride resin, and the antiviral agent comprises a sulfonic acid antiviral agent, a silver antiviral agent, or a carboxylic acid antiviral agent.

[0024] According to a broad aspect of the present invention, there is provided an antiviral resin molded product comprising a thermoplastic resin and an antiviral agent, wherein the thermoplastic resin comprises a polyolefin resin, an acrylonitrile-butadiene-styrene resin or a polyvinyl chloride resin, and the antiviral agent comprises a sulfonic acid antiviral agent, a silver antiviral agent or a carboxylic acid antiviral agent, and the contact angle of the surface of the antiviral resin molded product with respect to water at 23°C is less than 89°.

[0025] In a specific aspect of the antiviral resin molded article of the present invention, the content of the compound having a hydrophilic group different from the antiviral agent is 1 wt % to 25 wt % in 100 wt % of the antiviral resin molded article.

[0026] In a specific aspect of the antiviral resin molded article of the present invention, the content of the antiviral agent is 0.5% by weight or more and 5% by weight or less in 100% by weight of the antiviral resin molded article.

[0027] Effects of the Invention

[0028] The antiviral resin material of the present invention comprises a thermoplastic resin, an antiviral agent, and a compound different from the antiviral agent and having a hydrophilic group. In the antiviral resin material of the present invention, the thermoplastic resin comprises a polyolefin resin, an acrylonitrile-butadiene-styrene resin, or a polyvinyl chloride resin, and the antiviral agent comprises a sulfonic acid antiviral agent, a silver antiviral agent, or a carboxylic acid antiviral agent. In the antiviral resin material of the present invention, since it has the above-mentioned structure, the antiviral property of the antiviral agent can be effectively improved.

[0029] The antiviral resin molded product of the present invention comprises a thermoplastic resin, an antiviral agent, and a compound different from the antiviral agent and having a hydrophilic group. In the antiviral resin molded product of the present invention, the thermoplastic resin comprises a polyolefin resin, an acrylonitrile-butadiene-styrene resin, or a polyvinyl chloride resin, and the antiviral agent comprises a sulfonic acid antiviral agent, a silver antiviral agent, or a carboxylic acid antiviral agent. In the antiviral resin molded product of the present invention, since it has the above-mentioned structure, the antiviral property of the antiviral agent can be effectively improved.

[0030] The antiviral resin molded product of the present invention comprises a thermoplastic resin and an antiviral agent. In the antiviral resin molded product of the present invention, the thermoplastic resin comprises a polyolefin resin, an acrylonitrile-butadiene-styrene resin or a polyvinyl chloride resin, and the antiviral agent comprises a sulfonic acid antiviral agent, a silver antiviral agent or a carboxylic acid antiviral agent. The contact angle of the surface of the antiviral resin molded product of the present invention for water at 23°C is less than 89°. In the antiviral resin molded product of the present invention, since it has the above-mentioned structure, the antiviral property of the antiviral agent can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] [ Figure 1 ] Figure 1 This is a cross-sectional view schematically showing an antiviral resin molded article according to one embodiment of the present invention. DETAILED DESCRIPTION

[0032] Hereinafter, the present invention will be described in detail. In the following description, "antiviral resin material" is sometimes described as "resin material". "Antiviral resin molded product" is sometimes described as "resin molded product". "Acrylonitrile-butadiene-styrene resin" is sometimes described as "ABS resin". "Compound having a hydrophilic group different from the antiviral agent" is sometimes described as "hydrophilic compound".

[0033] (Resin material)

[0034] The resin material of the present invention comprises a thermoplastic resin, an antiviral agent and a hydrophilic compound. In the resin material of the present invention, the thermoplastic resin comprises a polyolefin resin, an ABS resin or a polyvinyl chloride resin, and the antiviral agent comprises a sulfonic acid antiviral agent, a silver antiviral agent or a carboxylic acid antiviral agent.

[0035] In the resin material of the present invention, since it has the above-mentioned structure, the antiviral property of the antiviral agent can be effectively improved. In addition, in the resin material of the present invention, even if the resin material or the resin molded product using the resin material is used for a long time, the antiviral property can be maintained at a high level for a long time. In addition, in the resin material of the present invention, even if the content of the antiviral agent is small, the high antiviral property is exhibited, so the amount of the antiviral agent used can be reduced, and the cost can be reduced.

[0036] The mechanism for exerting the effect is not particularly limited, and is believed to be the following reasons. In the resin material having a specific composition including the specific thermoplastic resin and the specific antiviral agent, the hydrophilic compound is also included in the present invention. It is believed that through the combination of the three specific components, especially due to the hydrophilic compound, the antiviral agent with virus adsorption as an inactivation mechanism can be well present on the surface of the resin material or the resin molded product using the resin material. In addition, it is believed that the balance between the hydrophilicity and the hydrophobicity of the surface of the resin material or the resin molded product is changed by the hydrophilic compound, so that the virus is well transferred and diffused to the surface of the resin material or the resin molded product.

[0037] In addition, the resin material of the present invention has the above-mentioned structure, so that the water resistance of the resin material or the resin molded product using the resin material can be improved, and even if the resin material or the resin molded product using the resin material comes into contact with water, it is possible to maintain high antiviral properties.

[0038] In addition, the resin material of the present invention has the above-mentioned structure, so that the solvent resistance, especially ethanol resistance, of the resin material or the resin molded product using the resin material can be improved, and even if the resin material or the resin molded product using the resin material comes into contact with a solvent, high antiviral properties can be maintained.

[0039] In addition, in the resin material of the present invention, since it has the above-mentioned structure, the alkali resistance, especially the sodium hypochlorite resistance, of the resin material or the resin molded product using the resin material can be improved. Even if the resin material or the resin molded product using the resin material comes into contact with an alkali agent, high antiviral properties can be maintained.

[0040] For example, the surface of the resin molded product is sometimes wiped by a wiping member containing water, a solvent (ethanol, etc.) or an alkaline agent (sodium hypochlorite, etc.) during cleaning. In the present invention, even if the surface of the resin molded product is wiped, the antiviral property is not easily changed, and the durability can be improved.

[0041] (Resin molded products)

[0042] The resin molded article of the present invention comprises a thermoplastic resin, an antiviral agent and a hydrophilic compound. In the resin molded article of the present invention, the thermoplastic resin comprises a polyolefin resin, an ABS resin or a polyvinyl chloride resin, and the antiviral agent comprises a sulfonic acid antiviral agent, a silver antiviral agent or a carboxylic acid antiviral agent.

[0043] The resin molded article of the present invention comprises a thermoplastic resin and an antiviral agent. In the resin molded article of the present invention, the thermoplastic resin comprises a polyolefin resin, an ABS resin or a polyvinyl chloride resin, and the antiviral agent comprises a sulfonic acid antiviral agent, a silver antiviral agent or a carboxylic acid antiviral agent. The contact angle of the surface of the resin molded article of the present invention to water at 23°C is 89° or less.

[0044] In the antiviral resin molded product of the present invention, since it has the above-mentioned structure, the antiviral property of the antiviral agent can be effectively improved. In particular, by using the hydrophilic compound or setting the contact angle of the surface of the resin molded product to below the above-mentioned upper limit, the antiviral property of the antiviral agent can be effectively improved. In addition, in the resin molded product of the present invention, even if the resin molded product is used for a long time, the antiviral property can be maintained at a high level for a long time. In addition, in the resin molded product of the present invention, even if the content of the antiviral agent is small, high antiviral property is exhibited, so the amount of the antiviral agent used can be reduced, and the cost can be reduced.

[0045] The mechanism for exerting the effect is not particularly limited, and the following reasons are considered. In the resin molded article having a specific composition including the specific thermoplastic resin and the specific antiviral agent, in the present invention, the hydrophilic compound is further included, or the contact angle is controlled below the upper limit. It is believed that by the combination of the specific three components or the combination of the specific two components and the specific contact angle, especially due to the hydrophilic compound or the specific contact angle, the antiviral agent that uses virus adsorption as an inactivation mechanism can be well present on the surface of the resin molded article. In addition, it can be considered that the balance between the hydrophilicity and the hydrophobicity of the surface of the resin molded article is changed by the hydrophilic compound or the contact angle, so that the virus is well transferred and diffused on the surface of the resin molded article.

[0046] Furthermore, the resin molded article of the present invention has the above-mentioned structure, so that water resistance can be improved and high antiviral properties can be maintained even when the resin molded article comes into contact with water.

[0047] Furthermore, the resin molded article of the present invention has the above-mentioned structure, so that solvent resistance, particularly ethanol resistance, can be improved, and even if the resin molded article comes into contact with a solvent, high antiviral properties can be maintained.

[0048] Furthermore, the resin molded article of the present invention has the above-mentioned structure, so that the alkali resistance, in particular the sodium hypochlorite resistance, can be improved, and the antiviral property can be maintained even when the resin molded article comes into contact with an alkali agent.

[0049] For example, the surface of the resin molded product is sometimes wiped by a wiping member containing water, a solvent (ethanol, etc.) or an alkaline agent (sodium hypochlorite, etc.) during cleaning. In the present invention, even if the surface of the resin molded product is wiped, the antiviral property is not easily changed, and the durability can be improved.

[0050] The contact angle of the surface of the resin molded article with respect to water at 23°C is preferably 89° or less, more preferably 80° or less, and further preferably 75° or less. When the contact angle is the upper limit, the antiviral property of the resin molded article becomes even better. The contact angle of the surface of the resin molded article with respect to water at 23°C may be 70° or less, may be less than 70°, may be 67° or less, and may be 65° or less. There is no particular limitation on the lower limit of the contact angle. The contact angle of the surface of the resin molded article with respect to water at 23°C may be 30° or more, or may be 40° or more. The contact angle is preferably measured on the plane of the resin molded article.

[0051] Specifically, the contact angle can be measured as follows.

[0052] Using a resin molded article and a contact angle meter (e.g., Kyowa Interface Science Co., Ltd., solid-liquid interface analysis system DropMaster DMs-401), observe the change in contact angle with respect to water over time based on the drop method. Measure the contact angle 5 minutes after the water droplet lands on the resin molded article. Preferably, the resin molded article is cut into a size of 3 cm long × 3 cm wide, and the contact angle is measured.

[0053] As a method for making the contact angle of the surface of the resin molded article to water below the upper limit, there can be cited a method of preparing a compound (hydrophilic compound) that is different from the viral agent and has a hydrophilic group, and a method of hydrophilizing the surface of the resin molded article. By the method of hydrophilizing the surface of the resin molded article, the effect of the present invention can be exerted even if the hydrophilic compound is not formulated in the resin material used to obtain the resin molded article. From the viewpoint of further effectively exerting the effects of the composition of the present invention, especially antiviral properties, the method of using the hydrophilic compound and the method of making the contact angle below the upper limit is preferably a method of using the hydrophilic compound. It is more preferred to use both the method of using the hydrophilic compound and the method of making the contact angle below the upper limit. In addition, by using the hydrophilic compound, it is easy to make the contact angle below the upper limit.

[0054] Hereinafter, other details of the resin material of the present invention and the resin molded article of the present invention will be described.

[0055] [Thermoplastic resin]

[0056] Known thermoplastic resins include polyolefin resins, polyvinyl chloride resins, polyamide resins, polycarbonate resins, polystyrene resins, polyester resins, acrylonitrile-butadiene-styrene resins (ABS resins), polyethylene terephthalate (PET), and polymethyl methacrylate (PMMA).

[0057] The resin material and the resin molded product include polyolefin resin, ABS resin or polyvinyl chloride resin as thermoplastic resin. That is, in the present invention, a specific thermoplastic resin is selected and used. The thermoplastic resin may be used alone or in combination of two or more.

[0058] The thermoplastic resin may include a polyolefin resin or an ABS resin, may include a polyolefin resin or a polyvinyl chloride resin, may include an ABS resin or a polyvinyl chloride resin, may include a polyolefin resin, may include an ABS resin, and may include a polyvinyl chloride resin.

[0059] From the viewpoint of more effectively exerting the effects of the configuration of the present invention, particularly the antiviral property, the thermoplastic resin preferably includes a polyolefin resin, and more preferably a polyolefin resin.

[0060] Examples of polyolefin resins include polyethylene, polypropylene, ethylene-propylene copolymer (EPDM), isobutylene-isoprene copolymer, polystyrene, polybutene, polyisobutylene, polybutadiene, acrylonitrile-butadiene copolymer, ethylene-vinyl acetate copolymer and ethylene-α-olefin copolymer. Polyethylene is obtained by using 50% by weight or more of ethylene as a polymerization component. Polypropylene is obtained by using 50% by weight or more of propylene as a polymerization component. The polyolefin resin may be used alone or in combination of two or more.

[0061] From the perspective of further effectively exerting the effects of the configuration of the present invention, especially the antiviral property, the polyolefin resin is preferably polyethylene or polypropylene, and more preferably polypropylene. From the perspective of further effectively exerting the effects of the configuration of the present invention, especially the antiviral property, the thermoplastic resin is preferably polyethylene or polypropylene, and more preferably polypropylene.

[0062] Examples of the polyvinyl chloride resin include homopolymers of vinyl chloride monomers, copolymers of vinyl chloride monomers and vinyl monomers copolymerizable with vinyl chloride, etc. The copolymer is preferably a copolymer of 50% by weight or more of vinyl chloride monomers and 50% by weight or less of vinyl monomers copolymerizable with vinyl chloride. The polyvinyl chloride resin may be used alone or in combination of two or more.

[0063] Examples of the vinyl monomer copolymerizable with the vinyl chloride monomer include vinyl acetate, acrylonitrile, vinylidene chloride, ethylene, vinyl ether, maleic acid, maleic anhydride, acrylic ester, vinyl fluoride, maleimide, etc. The vinyl monomer may be used alone or in combination of two or more.

[0064] The degree of polymerization of the thermoplastic resin is preferably 10,000 or more, and more preferably 100,000 or more. The upper limit of the degree of polymerization of the thermoplastic resin is not particularly limited. The degree of polymerization of the thermoplastic resin may be 1×10 100 Below, it can be 1×10 10 Below, it can also be 1×10 8 the following.

[0065] [Antiviral agents]

[0066] As the antiviral agent, inorganic antiviral agents and organic antiviral agents are mentioned. As the inorganic antiviral agent, metal antiviral agents represented by silver and copper are known. As the organic antiviral agent, anionic organic antiviral agents represented by sulfonic acid and carboxylic acid, and cationic organic antiviral agents represented by amines are known. As the carboxylic acid antiviral agent, acrylic acid antiviral agents are mentioned. As the amine antiviral agent, cationic organic antiviral agents represented by guanidine are mentioned.

[0067] The resin material and the resin molded product contain a sulfonic acid antiviral agent, a silver antiviral agent or a carboxylic acid antiviral agent as an antiviral agent. That is, in the present invention, a specific antiviral agent is selected for use. The antiviral agent may be used alone or in combination of two or more.

[0068] The antiviral agent may include a sulfonic acid antiviral agent or a silver antiviral agent, or may include a sulfonic acid antiviral agent or a carboxylic acid antiviral agent, or may include a silver antiviral agent or a carboxylic acid antiviral agent. The antiviral agent may include a sulfonic acid antiviral agent, or may include a silver antiviral agent, or may include a carboxylic acid antiviral agent.

[0069] From the viewpoint of more effectively exerting the effects of the configuration of the present invention, particularly the antiviral property, the antiviral agent preferably includes an organic antiviral agent, more preferably includes a sulfonic acid antiviral agent, and even more preferably includes a sulfonic acid antiviral agent.

[0070] The sulfonic acid antiviral agent includes a compound having a sulfonic acid group or a sulfonate. Examples of the sulfonic acid antiviral agent include polymer particles containing a sulfonic acid group and polymer particles containing a sulfonate. The sulfonic acid antiviral agent may be used alone or in combination of two or more.

[0071] Examples of monomers constituting the sulfonic acid antiviral agent (sulfonic acid group-containing polymer particles or sulfonate-containing polymer particles) include sodium styrene sulfonate, calcium styrene sulfonate, ammonium styrene sulfonate, and magnesium styrene sulfonate. The monomers may be used alone or in combination of two or more.

[0072] The sulfonic acid antiviral agent is preferably a copolymer particle of styrenesulfonic acid or a salt thereof and a hydrophobic monomer. In this case, when the resin material and the resin molded product come into contact with water, whitening can be effectively suppressed.

[0073] Examples of the hydrophobic monomer include ethylene, propylene, butylene, butadiene, diisobutylene, vinyl chloride, vinylidene chloride, 2-vinylnaphthalene, styrene, vinyl alkyl ether, vinyl acetate, acrylonitrile, (meth) alkyl acrylate, (meth) acrylic acid, sodium (meth) acrylate, maleic acid, fumaric acid, maleic anhydride, (meth) acrylamide, diacetone acrylamide, vinyl toluene, xylene sulfonic acid, vinyl pyridine, vinyl sulfonic acid, vinyl alcohol, methyl (meth) acrylate, and hydroxyethyl (meth) acrylate. The hydrophobic monomer may be used alone or in combination of two or more.

[0074] From the viewpoint of more effectively suppressing the whitening of the resin material and the resin molded article, the hydrophobic monomer is preferably styrene or 2-vinylnaphthalene, and more preferably styrene.

[0075] Examples of the copolymer particles of styrenesulfonic acid or a salt thereof and styrene include styrenesulfonic acid-styrene copolymer particles, styrenesulfonate-styrene copolymer particles, and styrenesulfonate-styrenesulfonic acid-styrene terpolymer particles.

[0076] Examples of the styrene sulfonate-styrene copolymer particles include sodium styrene sulfonate-styrene copolymer particles, calcium styrene sulfonate-styrene copolymer particles, ammonium styrene sulfonate-styrene copolymer particles, and magnesium styrene sulfonate-styrene copolymer particles. The styrene sulfonate-styrene copolymer particles are preferably sodium styrene sulfonate-styrene copolymer particles, and more preferably sodium p-styrene sulfonate-styrene copolymer particles.

[0077] Examples of the styrene sulfonate-styrene sulfonic acid-styrene terpolymer particles include sodium styrene sulfonate-styrene sulfonic acid-styrene terpolymer particles, calcium styrene sulfonate-styrene sulfonic acid-styrene terpolymer particles, ammonium styrene sulfonate-styrene sulfonic acid-styrene terpolymer particles, and magnesium styrene sulfonate-styrene sulfonic acid-styrene terpolymer particles. The styrene sulfonate-styrene sulfonic acid-styrene terpolymer particles are preferably sodium styrene sulfonate-styrene sulfonic acid-styrene terpolymer particles, and more preferably sodium p-styrene sulfonate-styrene sulfonic acid-styrene terpolymer particles.

[0078] The weight average molecular weight of the polymer constituting the sulfonic acid antiviral agent is preferably 20,000 or more, more preferably 50,000 or more, further preferably 100,000 or more, and preferably 1,000,000 or less. When the weight average molecular weight of the polymer is above the lower limit, the antiviral property can be further effectively exerted. When the weight average molecular weight of the polymer is below the upper limit, the viscosity of the resin material can be within an appropriate range, and the operability of the resin material can be improved.

[0079] It should be noted that when the sulfonic acid antiviral agent and a compound having a carbonyl group or an ether group are used in combination, the sulfonic acid group as a polar group is compatible with the carbonyl group or the ether group, and thus there is a tendency that the antiviral activity of the antiviral agent is easily reduced. Therefore, when the sulfonic acid antiviral agent and a compound having a carbonyl group or an ether group are used in combination, as the sulfonic acid antiviral agent, a copolymer containing a polymerization component of a monomer having low polarity (low polarity monomer) is preferably used.

[0080] Examples of the monomer having low polarity include compounds having a (meth)acryloyl group. The (meth)acryloyl group refers to an acryloyl group or a methacryloyl group.

[0081] Examples of the compound having a (meth)acryloyl group include ethylene glycol di(meth)acrylate, propylene glycol di(meth)acrylate, 1,4-butanediol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate, 1,9-nonanediol dimethacrylate, neopentyl glycol di(meth)acrylate, polyethylene glycol di(meth)acrylate, hydroxypivalic acid neopentyl glycol di(meth)acrylate, dicyclopentyl di(meth)acrylate, caprolactone-modified dicyclopentenyl di(meth)acrylate, ethylene oxide-modified phosphoric acid di(meth)acrylate, allylated cyclohexyl di(meth)acrylate, isocyanate, and the like. Cyanurate di(meth)acrylate, trimethylolpropane tri(meth)acrylate, ethylene oxide-modified trimethylolpropane tri(meth)acrylate, dipentaerythritol tri(meth)acrylate, propionic acid-modified dipentaerythritol tri(meth)acrylate, pentaerythritol tri(meth)acrylate, propylene oxide-modified trimethylolpropane tri(meth)acrylate, tri(acryloyloxyethyl) isocyanurate, propionic acid-modified dipentaerythritol penta(meth)acrylate, dipentaerythritol hexa(meth)acrylate, ethylene oxide-modified dipentaerythritol hexa(meth)acrylate and caprolactone-modified dipentaerythritol hexa(meth)acrylate, etc.

[0082] The compound having a (meth)acryloyl group is preferably polyethylene glycol di(meth)acrylate, trimethylolpropane tri(meth)acrylate or dipentaerythritol hexa(meth)acrylate.

[0083] The silver antiviral agent includes silver or a salt thereof. The silver antiviral agent is, for example, silver-containing particles. The silver antiviral agent (silver-containing particles) may be used alone or in combination of two or more.

[0084] Examples of the silver antiviral agent (silver-containing particles) include silver particles, silver salt particles, and silver complex particles. Examples of the silver salt include silver nitrate, silver sulfate, and silver chloride. Examples of the silver complex include silver thiosulfite complexes and silver sodium chloride complexes.

[0085] In addition, as the silver antiviral agent (silver-containing particles), particles obtained by supporting a silver-containing compound on a carrier can also be cited. As the silver-containing compound, silver particles, silver salt particles, and silver complex particles can be cited. As the carrier, zeolite, silica gel, silicate, phosphate, soluble glass, activated carbon, and metal carriers can be cited.

[0086] In addition, as the silver-based antiviral agent (containing silver particles), colloidal silver may also be mentioned. The average particle size of the colloidal silver is, for example, 1 nm or more and 1 μm or less.

[0087] The carboxylic acid antiviral agent includes a compound derived from carboxylic acid or a carboxylate. The carboxylic acid antiviral agent may be used alone or in combination of two or more.

[0088] The carboxylic acid antiviral agent preferably has at least one carboxyl group. Examples of the carboxylic acid antiviral agent include adipic acid, benzoic acid, lauric acid, azelaic acid, sebacic acid, dodecanedioic acid, fumaric acid, phthalic acid, isophthalic acid, terephthalic acid, methylenedisalicylic acid, cis-Δ4-tetrahydrophthalic acid, caproic acid, heptanoic acid, octanoic acid, nonanoic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, myristoleic acid, oleic acid, ricinoleic acid, salicylic acid, gallic acid hydrate, benzilic acid, 4-aminobenzoic acid, nitrilotriacetic acid, ethylenediaminetetraacetic acid, 1,3-diaminopropanetetraacetic acid, ethylenediaminesuccinic acid, diethylenetriaminepentaacetic acid, 1-amino-1-cyclobutanecarboxylic acid, cycloleucine, 1-aminocyclohexanecarboxylic acid, 3-aminocyclohexanecarboxylic acid, and compounds derived from acrylic acid.

[0089] Examples of the compound derived from acrylic acid include acrylic acid-methyl (meth)acrylate copolymers, acrylic acid-ethyl (meth)acrylate copolymers, acrylic acid-butyl (meth)acrylate copolymers, acrylic acid-2-ethylhexyl (meth)acrylate copolymers, and acrylic acid-(methacrylic acid) copolymers.

[0090] From the viewpoint of further effectively exerting the effects of the configuration of the present invention, especially the antiviral property, it is preferred that the thermoplastic resin contains a polyolefin resin, and the antiviral agent contains a sulfonic acid antiviral agent, and it is more preferred that the thermoplastic resin is a polyolefin resin, and the antiviral agent is a sulfonic acid antiviral agent. That is, as a combination of the thermoplastic resin and the antiviral agent, a combination of a polyolefin resin and a sulfonic acid antiviral agent is particularly preferred. By further including the hydrophilic compound relative to the composition of this specific combination, the antiviral property is significantly improved.

[0091] From the perspective of further effectively exerting the effects of the present invention, especially the antiviral property, the antiviral agent is preferably an antiviral agent in which a surfactant is supported on organic particles. In the following description, "an antiviral agent in which a surfactant is supported on organic particles" is sometimes described as "antiviral agent X". The antiviral agent X is a particle.

[0092] Examples of the material of the organic particles include resins, etc. The organic particles are preferably resin particles.

[0093] The resin constituting the organic particles (or resin particles) may be a thermoplastic resin or a cured product of a thermosetting resin. It should be noted that, when the resin constituting the organic particles in the antiviral agent X is a thermoplastic resin, the thermoplastic resin constituting the organic particles does not include the thermoplastic resin contained in the resin material. The thermoplastic resin constituting the organic particles is different from the thermoplastic resin contained in the resin material.

[0094] Examples of the resin constituting the organic particles include polypropylene (PP) resin, polyvinyl chloride (PVC) resin, polymethyl methacrylate (PMMA) resin, polystyrene (PS) resin, polycarbonate resin, polyethylene terephthalate (PET) resin, aromatic polyester resin, acrylonitrile-butadiene-styrene (ABS) resin, acrylonitrile-styrene (AS) resin, methyl methacrylate-styrene (MS) resin, methyl methacrylate-butadiene-styrene (MBS) resin, epoxy resin, polyurethane resin, polyethylene (PE) resin, polyetheretherketone (PEEK) resin, polyetherketoneketone (PEKK) resin, thermoplastic olefin (TPO) resin, polytetrafluoroethylene resin, polyvinyl fluoride (PVF) resin, and polysiloxane resin.

[0095] Examples of the surfactant include anionic surfactants and cationic surfactants. The surfactant may be used alone or in combination of two or more.

[0096] From the viewpoint of more effectively exerting the effects of the configuration of the present invention, particularly the antiviral property, the surfactant is preferably a sulfonic acid surfactant. The sulfonic acid antiviral agent is preferably an antiviral agent in which a sulfonic acid surfactant is supported on organic particles.

[0097] Examples of the sulfonic acid surfactant include alkylbenzenesulfonic acid compounds, alkyldiphenyl ether disulfonic acid compounds, alkylnaphthalenesulfonic acid compounds, alkyl sulfate compounds, polyoxyethylene alkyl sulfate compounds, and naphthalenesulfonic acid formalin condensate compounds. The sulfonic acid surfactant may be used alone or in combination of two or more.

[0098] From the viewpoint of more effectively exerting the effects of the configuration of the present invention, particularly the antiviral property, the sulfonic acid surfactant is preferably an alkylbenzenesulfonic acid compound, an alkyldiphenyletherdisulfonic acid compound, or an alkylnaphthalenesulfonic acid compound.

[0099] In the antiviral agent X, the content of the surfactant relative to 100 parts by weight of the organic particles (the amount of the carried surfactant relative to 100 parts by weight of the organic particles) is preferably 20 parts by weight or more, more preferably 30 parts by weight or more, preferably 50 parts by weight or less, more preferably 40 parts by weight or less. When the content of the surfactant is above the lower limit and below the upper limit, the effects of the constitution of the present invention, particularly the antiviral property, can be further effectively exerted.

[0100] The particle size of the antiviral agent (the antiviral agent X, etc.) is preferably 0.1 μm or more, more preferably 0.5 μm or more, further preferably 1 μm or more, preferably 50 μm or less, more preferably 20 μm or less, further preferably 10 μm or less, and particularly preferably 5 μm or less. If the particle size of the antiviral agent is above the lower limit, the antiviral agent is not easy to aggregate in the resin material or resin molded product and the dispersibility of the antiviral agent can be improved, which can make the appearance of the resin material or resin molded product good. When the particle size of the antiviral agent is below the upper limit, the appearance of the resin material or resin molded product can be further improved.

[0101] The particle size of the antiviral agent is preferably the average particle size of the entire antiviral agent. The average particle size of the antiviral agent is preferably the number average particle size. The average particle size of the antiviral agent is obtained, for example, by dispersing the antiviral agent in a solvent such as squalane and performing laser diffraction particle size distribution measurement.

[0102] [Compound having a hydrophilic group different from the antiviral agent (hydrophilic compound)]

[0103] The resin material contains the hydrophilic compound. The resin molded article preferably contains the hydrophilic compound. When the contact angle on the surface of the resin molded article is below the upper limit, the resin molded article may contain the hydrophilic compound or may not contain the hydrophilic compound. The hydrophilic compound is different from the thermoplastic resin. The hydrophilic compound may be used alone or in combination of two or more.

[0104] Examples of the hydrophilic group include ether groups, hydroxyl groups, carboxyl groups, amino groups, and amide groups. From the perspective of more effectively exerting the effects of the configuration of the present invention, particularly antiviral properties, the hydrophilic group is preferably an ether group, hydroxyl group, or amide group.

[0105] As the hydrophilic compound, polyethylene glycol compounds, cellulose and polyvinyl pyrrolidone can be mentioned. As the polyethylene glycol compounds, polyethylene glycol and polyethylene glycol fatty acid esters can be mentioned. From the viewpoint of further effectively exerting the effect of the composition of the present invention, especially antiviral properties, the hydrophilic compound preferably includes polyethylene glycol compounds, cellulose or polyvinyl pyrrolidone, more preferably includes polyethylene glycol compounds or polyvinyl pyrrolidone, further preferably includes polyethylene glycol, polyethylene glycol fatty acid ester or polyvinyl pyrrolidone, and particularly preferably includes polyvinyl pyrrolidone. Polyvinyl pyrrolidone has an amide group as a hydrophilic group. Polyethylene glycol compounds, cellulose and polyvinyl pyrrolidone can each have a structure other than the hydrophilic group.

[0106] [Other ingredients]

[0107] The resin material may contain other components such as solvents, thickeners, fillers, antibacterial agents, flame retardants, mildewproofing agents, ultraviolet absorbers, and tackifiers. The other components may be used alone or in combination of two or more.

[0108] [Amount of each component in the resin material]

[0109] In 100% by weight of the resin material, the content of the thermoplastic resin is preferably 40% by weight or more, more preferably 45% by weight or more, further preferably 50% by weight or more, particularly preferably 55% by weight or more, preferably 99.8% by weight or less, more preferably 97% by weight or less, further preferably 96% by weight or less, further preferably 95% by weight or less, further preferably 90% by weight or less, particularly preferably 85% by weight or less, and most preferably 80% by weight or less. When the content of the thermoplastic resin is above the lower limit, the moldability of the resin material and the dispersibility of the blending components become better. When the content of the thermoplastic resin is below the upper limit, the moldability and mechanical properties of the resin material and the resin molded product using the resin material become better.

[0110] In 100 wt % of the resin material, the content of the antiviral agent is preferably 0.1 wt % or more, more preferably 0.5 wt % or more, further preferably 1 wt % or more, particularly preferably 2 wt % or more, most preferably 3 wt % or more, preferably 20 wt % or less, more preferably 10 wt % or less, further preferably 8 wt % or less, particularly preferably 6 wt % or less, and most preferably 5 wt % or less. When the content of the antiviral agent is above the lower limit, the antiviral property of the resin material and the resin molded product using the resin material becomes better. When the content of the antiviral agent is below the upper limit, the moldability and mechanical properties of the resin material and the resin molded product using the resin material become better.

[0111] In 100% by weight of the resin material, the content of the hydrophilic compound is preferably 0.1% by weight or more, more preferably 0.5% by weight or more, further preferably 1% by weight or more, particularly preferably 2% by weight or more, most preferably 5% by weight or more, preferably 70% by weight or less, more preferably 50% by weight or less, further preferably 30% by weight or less, particularly preferably 20% by weight or less, and most preferably 10% by weight or less. When the content of the hydrophilic compound is above the lower limit, the antiviral properties of the resin material and the resin molded product using the resin material become better. When the content of the hydrophilic compound is below the upper limit, the moldability and mechanical properties of the resin material and the resin molded product using the resin material become better.

[0112] In 100% by weight of the resin material, the total content of the antiviral agent and the hydrophilic compound is preferably 0.2% by weight or more, more preferably 0.5% by weight or more, further preferably 0.8% by weight or more, particularly preferably 1.5% by weight or more, most preferably 3% by weight or more, preferably 80% by weight or less, more preferably 60% by weight or less, further preferably 40% by weight or less, particularly preferably 30% by weight or less, and most preferably 11% by weight or less. When the total content of the antiviral agent and the hydrophilic compound is above the lower limit, the antiviral property of the resin material and the resin molded product using the resin material becomes better. When the total content of the antiviral agent and the hydrophilic compound is below the upper limit, the moldability and mechanical properties of the resin material and the resin molded product using the resin material become better.

[0113] In the resin material, the weight ratio of the content of the antiviral agent to the content of the hydrophilic compound is recorded as the weight ratio (content of the antiviral agent / content of the hydrophilic compound). The weight ratio (content of the antiviral agent / content of the hydrophilic compound) is preferably 0.1 or more, more preferably 0.15 or more, further preferably 0.2 or more, particularly preferably 0.25 or more, preferably 10 or less, more preferably 5 or less, further preferably 1 or less, further preferably 0.8 or less, particularly preferably 0.5 or less, and most preferably 0.4 or less. When the weight ratio (content of the antiviral agent / content of the hydrophilic compound) is above the lower limit and below the upper limit, the antiviral property of the resin material and the resin molded product using the resin material becomes better.

[0114] In 100% by weight of the resin material, the total content of the thermoplastic resin, the antiviral agent and the hydrophilic compound is preferably 50% by weight or more, more preferably 70% by weight or more, further preferably 80% by weight or more, and particularly preferably 90% by weight or more. In 100% by weight of the resin material, the total content of the thermoplastic resin, the antiviral agent and the hydrophilic compound may be 100% by weight, or less than 100% by weight, or less than 100% by weight. When the total content of the thermoplastic resin, the antiviral agent and the hydrophilic compound is above the lower limit, the antiviral property of the resin material and the resin molded product using the resin material becomes better.

[0115] [Amount of each component in the resin molded product]

[0116] In 100% by weight of the resin molded product, the content of the thermoplastic resin is preferably 50% by weight or more, more preferably 60% by weight or more, further preferably 70% by weight or more, particularly preferably 80% by weight or more, preferably 99.8% by weight or less, more preferably 97% by weight or less, further preferably 96% by weight or less, particularly preferably 95% by weight or less. When the content of the thermoplastic resin is above the lower limit, the moldability and mechanical properties of the resin molded product become better. When the content of the thermoplastic resin is below the upper limit, the antiviral property becomes better.

[0117] In 100% by weight of the resin molded article, the content of the antiviral agent is preferably 0.1% by weight or more, more preferably 0.5% by weight or more, further preferably 0.8% by weight or more, particularly preferably 1% by weight or more, preferably 10% by weight or less, more preferably 5% by weight or less, further preferably 2.5% by weight or less, particularly preferably 1.5% by weight or less, and most preferably 1% by weight or less. When the content of the antiviral agent is above the lower limit, the antiviral property of the resin molded article becomes better. When the content of the antiviral agent is below the upper limit, the moldability and mechanical properties become better.

[0118] In 100% by weight of the resin molded product, the content of the hydrophilic compound is preferably 0.1% by weight or more, more preferably 0.5% by weight or more, further preferably 1% by weight or more, particularly preferably 2% by weight or more, most preferably 5% by weight or more, preferably 35% by weight or less, more preferably 25% by weight or less, further preferably 15% by weight or less, particularly preferably 10% by weight or less. When the content of the hydrophilic compound is above the lower limit, the antiviral property of the resin molded product becomes better. When the content of the hydrophilic compound is below the upper limit, the moldability and mechanical properties become better.

[0119] In 100% by weight of the resin molded article, the total content of the antiviral agent and the hydrophilic compound is preferably 0.2% by weight or more, more preferably 0.8% by weight or more, further preferably 1.5% by weight or more, particularly preferably 3% by weight or more, preferably 50% by weight or less, more preferably 30% by weight or less, further preferably 20% by weight or less, and particularly preferably 11% by weight or less. If the total content of the antiviral agent and the hydrophilic compound is above the lower limit, the antiviral property of the resin molded article becomes better. When the total content of the antiviral agent and the hydrophilic compound is below the upper limit, the moldability and mechanical properties become better.

[0120] In the resin molded article, the weight ratio of the content of the antiviral agent to the content of the hydrophilic compound is recorded as the weight ratio (content of the antiviral agent / content of the hydrophilic compound). The weight ratio (content of the antiviral agent / content of the hydrophilic compound) is preferably 0.1 or more, more preferably 0.15 or more, further preferably 0.20 or more, particularly preferably 0.25 or more, preferably 10 or less, more preferably 5 or less, further preferably 1.0 or less, further preferably 0.8 or less, particularly preferably 0.5 or less, and most preferably 0.4 or less. When the weight ratio (content of the antiviral agent / content of the hydrophilic compound) is above the lower limit and below the upper limit, the antiviral property of the resin molded article becomes better.

[0121] In the resin molded article 100% by weight, the total content of the thermoplastic resin, the antiviral agent and the hydrophilic compound is preferably 50% by weight or more, more preferably 70% by weight or more, further preferably 80% by weight or more, and particularly preferably 90% by weight or more. In the resin molded article 100% by weight, the total content of the thermoplastic resin, the antiviral agent and the hydrophilic compound may be 100% by weight, or less than 100% by weight, or less than 100% by weight. When the total content of the thermoplastic resin, the antiviral agent and the hydrophilic compound is above the lower limit, the antiviral property of the resin molded article becomes better.

[0122] [Other details of resin material]

[0123] The resin material may be a molding resin material or a resin material different from the molding resin material. The resin material may be a coating resin material or a resin material different from the coating resin material. The resin material may be a coating material or a resin material different from the coating material.

[0124] Examples of a method for molding the resin material include press processing, extrusion processing, extrusion lamination processing, injection molding, etc. The resin material is preferably molded by injection molding.

[0125] The resin material is also excellent in moldability and is therefore particularly preferably used as a material for injection molding.

[0126] The resin material is also excellent in moldability, and therefore is preferably a resin pellet. By melting and molding the resin pellets, a resin molded product having excellent antiviral properties can be obtained.

[0127] The shape of the resin particles is not particularly limited, and spherical, cylindrical, and prismatic shapes can be cited. From the viewpoint of the stability of the particle shape, cylindrical shapes are preferred. The maximum length dimension of the resin particles is preferably 1 mm or more, more preferably 3 mm or more, preferably 10 mm or less, and more preferably 7 mm or less. The size of the resin particles (the size in the maximum length direction, etc.) can be measured using a vernier caliper. Preferably, 100 of the resin particles are randomly collected and the size is measured.

[0128] When the resin particles have a cylindrical shape, for example, the resin particles preferably have the following dimensions. The diameter of the resin particles is preferably 0.5 mm or more, more preferably 1 mm or more, preferably 5 mm or less, more preferably 3 mm or less. The length of the resin particles is preferably 1 mm or more, more preferably 3 mm or more, preferably 10 mm or less, more preferably 7 mm or less.

[0129] The resin material is preferably a masterbatch. The resin material can also be provided in the form of a masterbatch with excellent antiviral properties. The resin material (masterbatch) can be mixed with other resin materials (resin materials different from the resin material of the present invention) for use. The masterbatch can be resin particles. The other resin materials can also be resin particles. The resin material (masterbatch) is mixed with the other resin materials to obtain a mixed resin material, and then the mixed resin material is molded to obtain a molded product with excellent antiviral properties.

[0130] Preferably, the composition of the resin material is different from the composition of the other resin material. The thermoplastic resin in the resin material may be the same as or different from the thermoplastic resin in the other resin material. The other resin material may or may not contain the thermoplastic resin contained in the resin material of the present invention. The other resin material preferably contains a polyolefin resin, an acrylonitrile-butadiene-styrene resin or a polyvinyl chloride resin, and more preferably contains a polyolefin resin. The other resin material may or may not contain the antiviral agent contained in the resin material of the present invention. The other resin material may or may not contain an antiviral agent. The other resin material may or may not contain the hydrophilic compound contained in the resin material of the present invention. The other resin material may or may not contain a compound having a hydrophilic group different from the antiviral agent.

[0131] When the resin material (masterbatch) is mixed with other resin materials to obtain a mixed resin material, the following blending ratio is preferably satisfied: In 100 wt % of the mixed resin material, the content of the resin material (masterbatch) is preferably 0.1 wt % or more, more preferably 1 wt % or more, further preferably 5 wt % or more, particularly preferably 10 wt % or more, preferably 99.9 wt % or less, more preferably 99 wt % or less, further preferably 50 wt % or less, and particularly preferably 40 wt % or less.

[0132] [Method for producing resin molded article]

[0133] The method for producing a resin molded article of the present invention comprises a molding step of molding the resin material to obtain a resin molded article. Since the resin material has excellent moldability, it is preferable to obtain the resin molded article by injection molding.

[0134] The method for manufacturing a resin molded product of the present invention may include a mixing step of mixing the antiviral resin material with other resin materials to obtain a mixed resin material containing the antiviral resin material and the other resin material. In this case, the mixed resin material is molded in the molding step. Due to its excellent moldability, the mixed resin material is preferably injection molded in the molding step.

[0135] [Other details of resin molded products]

[0136] use Figure 1 An example of the resin molded article of the present invention will be described. Figure 1 This is a cross-sectional view schematically showing a resin molded product according to one embodiment of the present invention.

[0137] Figure 1 The resin molded article 10 shown has antiviral properties. The resin molded article 10 includes a resin portion 1 and an antiviral agent 2. The resin portion 1 contains the thermoplastic resin. The resin portion 1 preferably contains the hydrophilic compound. In the resin molded article 10, the antiviral agent 2 is arranged inside the resin portion 1. The antiviral agent 2 may be exposed from the outer surface of the resin portion 1. The contact angle of the surface of the resin molded article 10 with respect to water at 23° C. is preferably below the upper limit.

[0138] Like the resin molded product 10 , the resin molded product preferably includes a resin portion and an antiviral agent.

[0139] Examples of the molding method for obtaining the resin molded article include press molding, extrusion molding, extrusion lamination, and injection molding. The resin molded article is preferably an injection molded article.

[0140] The resin molded product may be a stretched product, or may be used after being stretched. In addition, the resin molded product may be a secondary molded product after being stretched.

[0141] The shape of the injection molded product is not particularly limited. The injection molded product may be in a sheet shape or may be in a shape other than a sheet shape. It should be noted that in this specification, a film is included in a sheet.

[0142] The dimension of the maximum length direction of the resin molded article is preferably 1 μm or more, more preferably 3 μm or more, further preferably 5 μm or more, and particularly preferably 10 μm or more. The dimension of the maximum length direction of the resin molded article may be 100 μm or more, 1 mm or more, 1 cm or more, 10 cm or more, or 1 m or more. The dimension of the maximum length direction of the resin molded article may be 100 m or less, 10 m or less, 2 m or less, or 1.5 m or less. The average thickness of the resin molded article is preferably 0.1 μm or more, more preferably 3 μm or more, further preferably 5 μm or more, and particularly preferably 10 μm or more. The average thickness of the resin molded article may be 100 μm or more, or 1 mm or more. The average thickness of the resin molded article may be 1 m or less, 10 cm or less, 1 cm or less, or 8 mm or less.

[0143] The resin molded products are suitable for use in interior and exterior materials, toilets and food cooking areas of transport aircraft such as railway vehicles, aircraft, ships, and automobiles; interior and exterior materials, toilets and food cooking areas of buildings; ticket machines in stations; information terminals in commercial facilities; medical equipment in hospitals, etc.

[0144] The present invention will be described in detail below with reference to Examples. However, the present invention is not limited to the following Examples.

[0145] Prepare the following materials.

[0146] (Thermoplastic resin)

[0147] Polypropylene ("PP" in the table, "NOVATEC PP BC6C" manufactured by JAPAN POLYPROPYLENE Co., Ltd.)

[0148] Polyethylene ("PE" in the table, "Nipolon Hard 1000" manufactured by Tosoh Corporation)

[0149] ABS resin ("ABS" in the table, "Denka ABS QF" manufactured by Denka)

[0150] (Antiviral Agent)

[0151] Sulfonic acid antiviral agent ("Sulfonic acid" in the table refers to an antiviral agent in which a sulfonic acid surfactant is supported on organic particles (polystyrene resin particles), with an average particle size of 5.0 μm)

[0152] Silver antiviral agent (“Silver” in the table refers to silver inorganic compound particles with an average particle size of 2.5 μm)

[0153] Carboxylic acid antiviral agent 1 ("Carboxylic acid 1" in the table, particles of isophthalic acid, average particle size 7.0 μm)

[0154] Carboxylic acid antiviral agent 2 ("Carboxylic acid 2" in the table, particles of terephthalic acid, average particle size 7.0 μm)

[0155] Carboxylic acid antiviral agent 3 (“Carboxylic acid 3” in the table, particles of 1,3-diaminopropanetetraacetic acid, average particle size 7.0 μm)

[0156] (Hydrophilic Compounds)

[0157] Polyvinylpyrrolidone (PVP in the table, K30 manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.)

[0158] Polyethylene glycol compound 1 ("PEG1" in the table, polyethylene glycol distearate)

[0159] Polyethylene glycol compound 2 ("PEG2" in the table, polyethylene glycol monostearate)

[0160] Polyethylene glycol compound 3 ("PEG3" in the table, polyethylene glycol)

[0161] (Examples 1 to 11 and Comparative Examples 1 to 3)

[0162] Other resin pellets (base resin materials) containing the components shown in Tables 1 to 4 below were prepared. In addition, the components shown in Tables 1 to 4 below were blended in the blending amounts shown in Tables 1 to 4 below to obtain resin pellets (master batch / resin material).

[0163] The obtained resin pellets (masterbatch) and the obtained other resin pellets (base resin material) were kneaded at 180° C. for 3 minutes using LABOPLASTOMILL (“KF-100” manufactured by Toyo Seiki Co., Ltd.), and compression molded to obtain a sheet-like resin molded product (average thickness 1 mm). It should be noted that the resin pellets (masterbatch) and the other resin pellets (base resin material) were used in a ratio such that the blending amount of each component in the resin molded product became the blending amount shown in Tables 1 to 4 below.

[0164] (evaluate)

[0165] (1) Contact angle of the surface of a resin molded product

[0166] The contact angle of the surface of the obtained resin molded article with respect to water at 23° C. was measured by the above method. In addition, as a contact angle meter, “Solid-Liquid Interface Analysis System DropMaster DMs-401” manufactured by Kyowa Interface Science Co., Ltd. was used.

[0167] (2) Antiviral properties

[0168] Inoculate the MDCK cells cultured in the 10 cm dish with influenza virus and culture at 37°C for 1 hour. After culture, remove the culture supernatant containing the non-sensitized virus. Add DMEM medium to the 10 cm dish from which the supernatant has been removed and culture at 37°C for 4 days. After culture, collect the culture supernatant and centrifuge at 800 rpm for 5 minutes. Use the supernatant after centrifugation as the virus solution.

[0169] The obtained resin molded product was cut into 5 cm long × 5 cm wide as a test sample. The test sample was placed in a culture dish, and 0.4 ml of the virus solution diluted 10 times with sterilized water was dripped on the surface of the test sample, covered with a covering film, covered with a culture dish, and left to stand at 25°C for 24 hours. Next, 10 ml of SCLDP was used to recover the virus solution from the test sample and dilute it 10 times in stages with cell maintenance medium. The diluted virus solution was inoculated into MDCK cells cultured in a 6-well plate, and the number of plaques was counted according to ISO21702 to determine the antiviral activity value. Two 6-well plates were tested and the average value of the antiviral activity value was calculated. The antiviral property was determined according to the following criteria.

[0170] [Criteria for judging antiviral properties]

[0171] ○: Antiviral activity value is 3.0 or more

[0172] △: Antiviral activity value is 2.0 or more and less than 3.0

[0173] ×: Antiviral activity value is less than 2.0

[0174] (3) Water resistance

[0175] The obtained resin molded product was cut into pieces of 5 cm in length and 5 cm in width, and immersed in water at 23°C for 18 hours according to SIAA water resistance test classification 1. The resin molded product after immersion was used as a test sample. Except for using this test sample, the average value of the antiviral activity value was calculated in the same manner as in the evaluation of antiviral activity (2) above.

[0176] (4) Solvent resistance

[0177] The obtained resin molded product was cut into pieces of 5 cm in length and 5 cm in width, and the surface of the resin molded product was wiped 3650 times using a wiping member impregnated with ethanol. The wiped resin molded product was used as a test sample. Except for using this test sample, the average value of the antiviral activity value was calculated in the same manner as in the evaluation of antiviral properties (2).

[0178] (5) Alkali resistance

[0179] The obtained resin molded product was cut into a length of 5 cm × width of 5 cm, and the surface of the resin molded product was wiped 3650 times using a wiping member impregnated with sodium hypochlorite solution. The wiped resin molded product was used as a test sample. Except for using this test sample, the average value of the antiviral activity value was calculated in the same manner as the evaluation of antiviral properties described in (2).

[0180] The composition and evaluation results of the resin molded products are shown in the following Tables 1 to 4. In addition, "-" in the table means that no compounding was performed.

[0181] [Table 1]

[0182]

[0183] [Table 2]

[0184]

[0185] [Table 3]

[0186]

[0187] [Table 4]

[0188]

[0189] Regarding the evaluation results of (3) water resistance, (4) solvent resistance, and (5) alkali resistance, in the resin molded articles of Examples 1 to 11, high antiviral activity values ​​were maintained after wiping, and the antiviral properties after wiping were also high.

[0190] Explanation of symbols

[0191] 1…Resin part

[0192] 2…Antiviral agents

[0193] 10…Resin molded products (antiviral resin molded products)

Claims

1. An antiviral resin material comprising: Thermoplastic resin, Antiviral agents, and A compound having a hydrophilic group different from the antiviral agent, The thermoplastic resin comprises polyolefin resin, acrylonitrile-butadiene-styrene resin or polyvinyl chloride resin, The antiviral agent includes a sulfonic acid antiviral agent, a silver antiviral agent or a carboxylic acid antiviral agent.

2. The antiviral resin material according to claim 1, wherein In 100 wt % of the antiviral resin material, the content of the compound that is different from the antiviral agent and has a hydrophilic group is 1 wt % or more and 50 wt % or less.

3. The antiviral resin material according to claim 1 or 2, wherein The content of the antiviral agent in 100 wt % of the antiviral resin material is 0.5 wt % or more and 10 wt % or less.

4. The antiviral resin material according to any one of claims 1 to 3, wherein The thermoplastic resin includes the polyolefin resin.

5. The antiviral resin material according to any one of claims 1 to 4, wherein The antiviral agent includes the sulfonic acid antiviral agent.

6. The antiviral resin material according to any one of claims 1 to 5, wherein The compound which is different from the antiviral agent and has a hydrophilic group includes polyethylene glycol compounds, cellulose or polyvinyl pyrrolidone. 7 . The antiviral resin material according to claim 1 , which is a resin particle.

8. The antiviral resin material according to any one of claims 1 to 7, which is a masterbatch. 9 . The antiviral resin material according to claim 1 , which is a material for injection molding.

10. A method for producing an antiviral resin molded product, comprising: A molding step of molding the antiviral resin material according to any one of claims 1 to 9 to obtain an antiviral resin molded product.

11. The method for producing an antiviral resin molded article according to claim 10, comprising: a mixing step of mixing the antiviral resin material with other resin materials to obtain a mixed resin material containing the antiviral resin material and the other resin materials, In the molding step, the mixed resin material is molded.

12. An antiviral resin molded product comprising: Thermoplastic resin, Antiviral agents, and A compound having a hydrophilic group different from the antiviral agent, The thermoplastic resin comprises polyolefin resin, acrylonitrile-butadiene-styrene resin or polyvinyl chloride resin, The antiviral agent includes a sulfonic acid antiviral agent, a silver antiviral agent or a carboxylic acid antiviral agent.

13. An antiviral resin molded product comprising: Thermoplastic resins, and Antiviral agents, The thermoplastic resin comprises polyolefin resin, acrylonitrile-butadiene-styrene resin or polyvinyl chloride resin, The antiviral agent comprises a sulfonic acid antiviral agent, a silver antiviral agent or a carboxylic acid antiviral agent, The contact angle of the surface of the antiviral resin molded article with respect to water at 23° C. is 89° or less.

14. The antiviral resin molded article according to claim 12, wherein In 100 wt % of the antiviral resin molded article, the content of the compound that is different from the antiviral agent and has a hydrophilic group is 1 wt % or more and 25 wt % or less.

15. The antiviral resin molded article according to any one of claims 12 to 14, wherein The content of the antiviral agent in 100 wt % of the antiviral resin molded article is 0.5 wt % or more and 5 wt % or less.

Images