JP2016052624A - Surface treating method for product with antibiotic and/or antiviral agent and product for it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a surface treating method and product for it in which surface treatment may be carried out independently from material quality of the product and potent antibiotic and/or antiviral effect may be provided by a simple operation.SOLUTION: There is provided a surface treating method for product 10 with antibiotic and/or antiviral agent for antibiotic and/or antiviral treatment. The surface treating method for product 10 comprises: an immersing step where substances 12 having a larger specific gravity than a predetermined solution 13 applied on surface 11 of the product 10 and an antibiotic and/or antiviral effect are immersed in organic solvent having a smaller specific gravity than the predetermined solution 13 for a predetermined time period; an organic solvent removing step in which after the immersing step, a part of the organic solvent is removed to obtain substances 12 having a smaller specific gravity than the predetermined solution 13 and an antibiotic and/or antiviral effect; and a step in which the substances 12 having an antibiotic and/or antiviral effect obtained in the organic solvent removing step is added to the predetermined solution 13 and coating process onto the product 10 is carried out.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an improvement in a method for surface-treating a substance having antibacterial and / or antiviral action on an article, and an article obtained by the improved method.

  In recent years, due to the growing interest in environmental sanitation, not only food-related items such as wet towels, but also daily necessities around us, products with antibacterial substances on the surface of articles have been put on the market. Yes.

  In addition, concerns about the epidemic of influenza and other viral infections have been widely reported in the media, and people's interest is rising. In recent years, specific inorganic compounds have photocatalytic activity, and substances having antiviral activity in combination with antibacterial activity have also been discovered. Antibacterial and / or antiviral agents having such photocatalytic activity have been used as home appliances, for example. Products placed on the surface of products, clothing, stationery, etc. are also commercially available and attract attention.

  An inorganic compound having photocatalytic activity is a substance (photocatalyst) that exhibits the function of promoting the decomposition (oxidation) by causing adsorption or desorption of oxygen molecules to an organic compound to be decomposed by ultraviolet irradiation. Titanium dioxide (TiO2), zinc oxide (ZnO), and the like are known, and these substances exhibit a strong redox action and superhydrophilic action, thereby at least suppressing the growth of bacteria and further preventing viruses. Some have been found to show an activating effect.

  On the other hand, in order for the photocatalyst to act as an antibacterial and / or antiviral agent, it is necessary that the photocatalyst be in contact with bacteria or viruses to be decomposed, in addition to irradiating the photocatalyst with ultraviolet rays or visible light. In order to obtain a high antibacterial and / or antiviral action, it is necessary to improve the contact rate between the photocatalyst and the decomposition target.

  In organic antibacterial agents, since many antibacterial agents act pharmacologically on microorganisms, it is said that they exhibit antibacterial action only when they come into direct contact with or are absorbed by microorganisms.

  That is, regardless of organic and inorganic systems, many compounds having antibacterial and / or antiviral activity can come into contact with microorganisms and viruses in order to more effectively exhibit antibacterial and / or antiviral activity. For example, it is desirable that a large amount of the above compound is arranged on the surface layer of the article.

  However, in general, these antibacterial and / or antiviral compounds have a large specific gravity. For example, when a powdery photocatalyst is mixed in a printing ink and printed on a substrate such as paper, Since the specific gravity of the photocatalyst is larger than that of the printing ink, the photocatalyst precipitates in the printing ink and the photocatalyst particles cannot be exposed on the surface of the substrate, and the expected antibacterial and / or antiviral action is obtained. There was a problem that it was not possible.

  For such a problem, in the method of forming a photocatalyst layer on a base material such as ceramics or metal by kneading a powdered photocatalyst into a binder, a binder layer made of a material lower than the softening temperature of the base material is used. The surface of the photocatalyst particles is substantially exposed to the outside by fixing the photocatalyst particles through, in particular, preventing the photocatalyst particles constituting the surface portion of the photocatalyst layer from being buried in the binder layer. It is known that the contact rate with the decomposition target can be improved (Patent Document 1).

  However, in the method described in Patent Document 1, it is necessary to perform heat treatment in order to form a photocatalyst layer, and thus there is a problem that it cannot be applied to a substrate having poor heat resistance such as paper material or wood. In addition, it is necessary to form a binder layer and a photocatalyst layer, and the process is complicated.

  Also known is an antibacterial coating agent that can disperse an antibacterial agent uniformly and easily by chemically bonding and supporting an antibacterial metal component composed of metal ions or metal compounds to polymer particles. (Patent Document 2).

However, although the invention described in Patent Document 2 can be uniformly dispersed, there is no effect of unevenly distributing the antibacterial agent on the surface of the coating agent.
Japanese Patent No. 3309591 Published Patent No. 10-287506

  Therefore, the present invention is based on such a conventional request, and the object of the present invention is to provide a surface treatment regardless of the material of the article in a method of applying antibacterial and / or antiviral action to the surface of the article. It is an object of the present invention to provide a surface treatment method and an article thereof capable of imparting a large antibacterial and / or antiviral action with a simple operation.

  In order to achieve the above object, the surface treatment method of an article according to the invention of claim 1 is a method of surface treatment of an article with an antibacterial and / or antiviral agent for performing antibacterial and / or antiviral treatment, An immersion step of immersing a substance having an antibacterial and / or antiviral action having a specific gravity greater than that of the predetermined solution applied to the surface of the article in an organic solvent having a specific gravity lower than that of the predetermined solution; and the immersion After the step, an organic solvent removing step of removing a part of the organic solvent to obtain a substance having antibacterial and / or antiviral action having a specific gravity smaller than that of the predetermined solution, and the antibacterial obtained by the organic solvent removing step And / or a substance having an antiviral action in the predetermined solution, and having a coating treatment step for coating an article. .

  As a result of earnest research, the inventor of the present invention converts an antibacterial and / or antiviral action substance having a higher specific gravity than the predetermined solution into an organic solvent having a lower specific gravity than the predetermined solution applied to the surface of the article. It has been found that the specific gravity of a substance having an antibacterial and / or antiviral action decreases by being immersed for a predetermined time.

  Further, by preparing a paste-like antibacterial and / or antiviral agent having a specific gravity smaller than that of the predetermined solution according to the above procedure, when the antibacterial and / or antiviral agent is contained in the predetermined solution, It can be put out on the surface of a predetermined solution without precipitating.

  Antibacterial is a concept that inhibits the growth of bacteria. Antibacterial performance can be evaluated by, for example, the antibacterial test method and antibacterial effect of JIS L 1902 fiber products, and the JIS Z 2801 processed antibacterial product-antibacterial test method and antibacterial effect. It has been established.

  Anti-virus is a concept that inactivates part of a virus. Antiviral performance can be evaluated on the basis of, for example, the antibacterial test method and antibacterial effect of JIS L 1902 fiber products, and the evaluation method defined by JIS Z 2801 antibacterial processed product-antibacterial test method and antibacterial effect. Various methods changed to have been adopted.

  In the surface treatment method for an article according to the invention of claim 2, the organic solvent removing step removes a part of the organic solvent to give a paste-like antibacterial and / or antibacterial having a specific gravity smaller than that of the predetermined solution. A substance having a virus action is obtained.

  In the article surface treatment method according to the invention of claim 3, the substance having antibacterial and / or antiviral action is any one or a combination of inorganic compounds having photocatalytic activity.

  Therefore, particles of a substance having antibacterial and / or antiviral action are immersed in an organic solvent for a long time, so that each particle is uniformly encased in the organic solvent.

  In the article surface treatment method according to claim 4, the predetermined time is 1 day to 20 days.

  The surface treatment method for an article according to the invention of claim 5 is characterized in that the organic solvent removing step removes a part of the organic solvent using a filter medium.

  In the surface treatment method for an article according to the invention described in claim 6, the organic solvent is any one of alcohols or a mixture containing any of the alcohols.

  In the article surface treatment method according to claim 7, the predetermined solution is any one of paint, ink, and varnish.

  The paint refers to a material applied to the surface of the article to protect or beautify the article, and is also called, for example, paint or resin liquid.

  Ink refers to a liquid or fluid containing pigments or dyes, and is used for writing letters or coloring a surface, and is sometimes called ink. In recent years, an ultraviolet curable resin containing ink is also used for UV printing.

  In the article surface treatment method according to an eighth aspect of the invention, the coating treatment step is applied by spraying on the surface of the article.

  As a method of spraying the surface of an article to apply an antibacterial and / or antiviral agent, there is, for example, spray coating. Spray coating is a method in which a paint is made into a mist and sprayed onto an article together with high-pressure air.

  In the article surface treatment method according to the ninth aspect of the invention, the coating treatment step is applied to the surface of the article by printing.

  Various printing methods used in the printing industry may be used as a method of applying to the surface of an article by printing, and examples include offset printing and gravure printing.

The surface treatment method for an article according to the invention of claim 10 is a method for surface treatment of an article with an antibacterial and / or antiviral agent for subjecting the surface to antibacterial and / or antiviral treatment. A step of immersing a substance having an antibacterial and / or antiviral action having a high specific gravity in an organic solvent having a specific gravity lower than that of the raw material of the article for a predetermined time, and after the immersion step, An organic solvent removing step of obtaining a substance having an antibacterial and / or antiviral action having a specific gravity smaller than that of the raw material of the article, and an antibacterial and / or antiviral action obtained by the organic solvent removing step A mixing step of mixing the substance into the raw material.

In the article surface treatment method according to the eleventh aspect, the raw material of the article is a resin.

  The article according to claim 12 is an article obtained by subjecting the surface to antibacterial and / or antiviral treatment, and has a specific gravity greater than that of the predetermined solution applied to the surface of the article. And / or a substance having an antiviral action is immersed in an organic solvent having a specific gravity smaller than that of the predetermined solution for a predetermined time, and has a specific gravity lower than that of the predetermined solution obtained by removing a part of the organic solvent. It is characterized by being obtained by containing a substance having an antibacterial and / or antiviral action in the predetermined solution and coating the article.

  The article according to the invention of claim 13 is an article obtained by subjecting the surface to antibacterial and / or antiviral treatment, and has an antibacterial and / or antiviral action having a higher specific gravity than the raw material of the article. And / or an antibacterial agent having a specific gravity lower than that of the raw material of the article obtained by immersing a substance having a specific gravity in an organic solvent having a specific gravity lower than that of the raw material of the article for a predetermined time and removing a part of the organic solvent. It is obtained by mixing a substance having an antiviral action into the raw material of the article.

  The article according to claim 14 is characterized in that the substance having antibacterial and / or antiviral action having a specific gravity smaller than that of the predetermined solution is in a paste form.

  In the inventions according to claims 1 to 9, for example, an antibacterial and / or antiviral agent having an average specific gravity lower than that of the varnish is mixed with the varnish and printed on the surface of the article, Since the antibacterial and / or antiviral agent comes to the surface without precipitating in the varnish, a substance having an antibacterial and / or antiviral action can be obtained without performing the above treatment by such a simple operation. Compared with the case where the same amount is mixed with the varnish, a greater antibacterial and / or antiviral effect can be imparted to the surface of the article.

By immersing for the predetermined time, the organic solvent wraps each particle of the substance having antibacterial and / or antiviral action, so that the specific gravity can be reduced evenly.
Among organic solvents, alcohols, in particular, have an appropriate polarity in the molecule, and therefore can be widely used because of their affinity with various substances.
Polarity indicates that the electric dipole moment causes an electrical bias in the molecule, and it is generally said that substances having similar polarities are likely to mix with each other. Alcohol has an OH part having polarity and a hydrocarbon part having no polarity in the molecule, and has an appropriate polarity.

  Therefore, it is possible to avoid problems such as a part of the particles where the organic solvent has not been sufficiently maintained, causing agglomeration and precipitation. For example, when the particles are included in a transparent varnish and applied to an article, It is possible to suppress the appearance of the article imparted with the antibacterial and / or antiviral action from becoming cloudy due to the aggregation and precipitation of the particles. Therefore, an antibacterial and / or antiviral action can be imparted to the surface of the article without impairing the transparency of the coating.

By making it into a paste form through an organic solvent removal step for removing a part of the organic solvent, handling such as weighing and addition work is easy. In addition, when kneading into the resin, if the content of the organic solvent is large, a temperature drop in the high temperature molding machine is induced, resulting in a problem that hinders the molding. Therefore, by reducing the organic solvent as much as possible, Trouble can be solved.
By performing the organic solvent removal step using a filter medium, the operation is simple and can be removed at low cost.

  Application methods such as spraying and printing are conventionally used application methods, and since such application methods can be used, there is no need for new equipment and the like, which causes such costs. It can be coated without using.

  In the inventions according to claims 10 and 11, for example, a paste-like antibacterial and / or antiviral agent having a specific gravity smaller than that of the resin is mixed and molded into a resin that is a raw material of a resin article. As a result, a larger antibacterial and / or antiviral effect can be imparted to the surface of the article as compared with a case where a substance having an antibacterial and / or antiviral effect is mixed with the varnish in the same amount without performing the above treatment. I can do it.

  By mixing with the raw material of the article and forming it, the formation of the article and the surface treatment of the substance having antibacterial and / or antiviral action can be performed in one step, so the energy consumption such as working time and electricity and the intermediate storage of the article Cost can be reduced.

It is the process flow figure showing the first embodiment of the surface treatment method of the article by the antibacterial and / or antiviral agent concerning the present invention. It is the process flow figure showing the second embodiment of the surface treatment method of the article by the antibacterial and / or antiviral agent concerning the present invention. It is the conceptual diagram which showed the article | item obtained by giving an antibacterial and / or antiviral process with the surface treatment method in 1st embodiment which concerns on this invention.

  Hereinafter, a surface treatment method of an article using an antibacterial and / or antiviral agent according to the present invention and the article will be described in detail with reference to the drawings.

  The surface treatment method of an article with an antibacterial and / or antiviral agent in the first embodiment according to the present invention is a method of surface treatment of an article with an antibacterial and / or antiviral agent that performs antibacterial and / or antiviral treatment. As shown in FIG. 1, an immersion step A is performed in which a substance having an antibacterial and / or antiviral action having a specific gravity larger than that of the predetermined solution is immersed in an organic solvent having a specific gravity smaller than that of the predetermined solution over a predetermined time. Have.

  The substance having antibacterial and / or antiviral action is any one or a combination of inorganic compounds having photocatalytic activity.

  In general, a substance having antibacterial and / or antiviral action may be any substance that has antibacterial action and / or antiviral action, and is generally used as an inorganic compound, organic compound, organic metal, natural compound, etc. It has been separated.

For example, inorganic compounds include chlorine compounds, iodine compounds, peroxides, boric acid, copper-based, zinc-based, titanium-based, sulfur-based, phosphoric acid-based, calcium-based, silicofluoride sodium, silver-based compounds, etc. Specific examples of the compound include zeolite, and specific examples include copper chloride (CuCl2), titanium dioxide (TiO2), zinc oxide (ZnO), strontium titanate (SrTiO3), iron oxide (Fe2O3), cadmium oxide ( CdO), indium oxide (In2O3), tungsten oxide (WO), cadmium sulfide (CdS), molybdenum disulfide (MoS2), molybdenum trisulfide (MoS3), bismuth oxide (Bi2O3), silver zirconium phosphate, silver / sodium hydrogen phosphorus Zirconate acid, metal zeolite, etc. are mentioned, especially titanium dioxide (Ti 2) it is preferred.
Moreover, you may use what is obtained by various combinations, such as what doped the metal chloride to the metal oxide.

  The metal zeolite is one in which a metal such as silver, zinc, or copper is stably supported in an ionic state by utilizing the adsorptivity of zeolite which is an aluminosilicate mineral. In this way, stably supporting and using a metal or a metal compound is a widely used technique and can also be used in the present invention.

  Organic compounds are further classified into aliphatic and aromatic systems. Examples of aliphatic compounds include organic tin compounds, cyclopentane derivatives, halogen derivatives, monohydric alcohols, dihydric alcohol derivatives, saturated aldehydes, saturated monocarboxylic acids. Acid, unsaturated monocarboxylic acid, unsaturated ether, lactone, quaternary ammonium salt, secondary amine, amino acid derivative, sulfonic acid derivative, hydroxamic acid derivative, cyanuric acid derivative, cyanic acid derivative, sulfone derivative, thiocarbamide derivative, Examples include guanidine derivatives, hydantoins, dithiols, arsine derivatives, phosphate esters, and fatty acid monoglycerides.

  Specific examples include alkyldi (aminoethyl) glycine, bronopol, 3-iodo-2-propagable carbamate, 2-n-octyl-4-isothiazolin-3-one, hexahydro-1,3,5-tris (2- Hydroxyethyl) -S-triazine, hexahydro-1,3,5-triethyl-S-triazine, aminoglycoside ST-7, 2,3,5,6-tetrachloro-4- (methylsulfonyl) pyridine, 2-bromo- Examples include 2-nitro-1,3-propanediol, 1,2-dibromo-2,4-dicyanobutane, cetylpyridinium chloride, 10,10-oxybisphenoxyarsine, and the like.

The CAS registration number for bronopol is 52-51-7 and the chemical name is 2-bromo-2-nitro-1,3-propanediol. The CAS registration number for 3-iodo-2-propagable carbamate is 55406-53-6.
The CAS registration number for 2-n-octyl-4-isothiazolin-3-one is 26530-20-1.

  Hexahydro-1,3,5-tris (2-hydroxyethyl) -S-triazine has a CAS registration number of 4719-04-4 and a chemical name of 1,3,5-triazine-1,3,5. (2H, 4H, 6H) -Tris (ethanol). Hexahydro-1,3,5-triethyl-S-triazine has a CAS registry number of 7779-27-3 and a chemical name of 1,3,5-triethylhexahydro-S-triazine.

  CAS registration number of aminoglycoside ST-7 is 3947-65-7, and chemical name is (2R, 3S, 4R, 5R, 6R) -5-amino-2- (aminomethyl) -6-[[( 1R, 2R, 3S, 4R, 6S) -4,6-diamino-2,3-dihydroxycyclohexyl] oxy] tetrahydro-2H-pyran-3,4-diol. The CAS registration number of 2,3,5,6-tetrachloro-4- (methylsulfonyl) pyridine is 13108-52-6 and the chemical name is 2,3,5,6-tetrachloro-4-mesyl. Pyridine.

  The CAS registration number for 2-bromo-2-nitro-1,3-propanediol is 52-51-7. The CAS registration number for 1,2-dibromo-2,4-dicyanobutane is 35691-65-7 and the chemical name is 2-bromo-2- (bromomethyl) glutaronitrile. The CAS registration number of cetylpyridinium chloride is 123-03-5, and the chemical name is 1-cetylpyridinium chloride.

  Examples of aromatic compounds include carbonates, quaternary ammonium salts, monoamine derivatives, diamine derivatives, hydroxylamine derivatives, anilide derivatives, nitrile derivatives, imidazole derivatives, benzothiazole derivatives, isothiazole derivatives, thiadiazole derivatives, triazine derivatives, guanidine derivatives. , Pyridine derivatives, pyrazolopyrimidine derivatives, benzofuran derivatives, monocyclic hydrocarbon derivatives, halogenobenzene derivatives, sulfone derivatives, benzenesulfonic acid derivatives, benzenecarboxylic acid derivatives, mercaptocarboxylic acid derivatives, hydroxycarboxylic acid derivatives, monohydric phenol derivatives, Divalent phenol derivatives, phenol ether derivatives, phenol ester derivatives, halogenophenol derivatives, phenyl derivatives, biphenyl, monovalent naphtho Le, naphthalene derivatives, pyrrole derivatives, quinone derivatives, quinoline derivatives, isoquinoline derivatives, and an organic phosphoric acid ester derivative.

  Specific examples include benzalkonium chloride, chlorhexidine gluconate, 4-isopropyl-3-methylphenol, parachlorometaxylenol, p-chloro-m-cresol, 2,4,4′-trichloro-2′-hydroxydiphenyl ether. , Trichlorocarbanilide, thiabendazole, methyl 2-benzimidazolecarbamate, 1,2-benzisothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, 1-chlorophenyl-3-iodo Propargyl formal, diiodomethyl-p-trisulfone, tetrachloroisophthalonitrile, 5-chloro-2,4,6-trifluoroisophthalonitrile, dichlorofluoride, N- (fluorodichloromethylthio) phthalimide, N, N ′ -Dimethyl-N - etc. (dichlorofluoromethylthio)-N'-phenyl sulfamide and the like.

  The CAS registration number for benzalkonium chloride is 8001-54-5. The CAS registration number of chlorhexidine gluconate is 18472-51-0, and the chemical name is chlorhexidine · 2 (D-gluconic acid). The CAS registry number for 4-isopropyl-3-methylphenol is 3228-02-2, sometimes referred to as 4-isopropyl-m-cresol.

  The CAS registry number for parachlorometaxylenol is 88-04-0 and the chemical name is 4-chloro-3,5-dimethylphenol. The CAS registration number of p-chloro-m-cresol is 59-50-7 and the chemical name is 4-chloro-m-cresol. The CAS registration number for 2,4,4'-trichloro-2'-hydroxydiphenyl ether is 3380-34-5.

  The CAS registration number for trichlorocarbanilide is 101-20-2 and the chemical name is 3,4,4'-trichlorocarbanilide. The CAS registration number for thiabendazole is 148-79-8 and the chemical name is 2- (4-thiazolyl) benzimidazole. The CAS registration number for methyl 2-benzimidazole carbamate is 10605-21-7 and the chemical name is 2- (methoxycarbonylamino) -1H-benzimidazole.

  The CAS registration number for 1,2-benzisothiazolin-3-one is 2634-33-5 and the chemical name is 1,2-benzisothiazol-3 (2H) -one. The CAS registry number for 5-chloro-2-methyl-4-isothiazolin-3-one is 26172-55-4. The CAS registration number of diiodomethyl-p-trisulfone is 20001-09-1 and the chemical name is diiodomethyl (4-methylphenyl) sulfone.

  The CAS registration number for tetrachloroisophthalonitrile is 1897-45-6, sometimes referred to as 2,4,5,6-tetrachloro-1,3-benzenedicarbonitrile. The CAS registration number for 5-chloro-2,4,6-trifluoroisophthalonitrile is 1897-50-3. The CAS registry number for diclofluuride is 1085-98-9 and the chemical name is N- (dichlorofluoromethylthio) -N- (dimethylaminosulfonyl) aniline.

  The CAS registration number for N- (fluorodichloromethylthio) phthalimide is 719-96-0. CAS registration number of N, N′-dimethyl-N ′-(dichlorofluoromethylthio) -N′-phenylsulfamide is 1085-98-9, chemical name is N- (dichlorofluoromethylthio) -N -(Dimethylaminosulfonyl) aniline.

Examples of the organic metal include sodium omadin, zinc omadin, and oxine copper. Zinc omazine is also sometimes called pyrithione.
Examples of the natural compound include chitosan, hinokitiol, Munetake bamboo, creosote oil, wasaol and the like.
The above-mentioned substances having various antibacterial and / or antiviral effects may be used by containing other substances as necessary.

Examples of the predetermined solution include paint, ink, varnish, UV resin liquid, and the like.
Examples of the paint include transparent ones such as boil oil, oil varnish, and phenolic resin varnish, and colored ones such as oil-based preparation paint, synthetic resin preparation paint, and oil-based enamel. In addition, there are emulsion types and the like, which can be selected as appropriate.
Examples of the ink include pigment ink, printing ink, dye ink, and medium ink. Special inks such as ultraviolet curable ink are also available and can be selected as appropriate.
Examples of the varnish include OP varnish and UV varnish, which are further classified into oily and aqueous, and can be selected as appropriate.

  The organic solvent is an organic compound that is liquid at normal temperature and pressure, such as chain hydrocarbon compounds, cyclic hydrocarbon compounds, alcohols, ketones, ethers, esters, aromatic compounds, heterocyclic compounds, etc. Any of these, or the mixture which consists of these combination is mentioned. Among the above, alcohols are preferable, and anhydrous ethanol is particularly preferable from the viewpoint of impregnation rate when immersed and antibacterial and / or antiviral action after surface treatment.

  Examples of the chain hydrocarbon compound include methylene chloride, chloroform, n-hexane and the like. Examples of the cyclic hydrocarbon compound include cyclohexane and cyclohexanone. Examples of alcohols include methanol, ethanol, propanol, 2-propanol, 1-butanol, and absolute ethanol. Examples of ketones include acetone and methyl ethyl ketone. Examples of ethers include dimethyl ether, diethyl ether, and ethyl methyl ether. Examples of the esters include ethyl acetate, butyl acetate, and methyl salicylate. Examples of the aromatic compound include benzene, toluene, phenol, xylene, cresol and the like. Examples of the heterocyclic compound include tetrahydrofuran, oxazole, quinoline, and the like.

The predetermined time is not particularly limited, but is preferably 1 day to 20 days.
The soaking means that a substance having antibacterial and / or antiviral action is put in an organic solvent.

  In the surface treatment method of an article with an antibacterial and / or antiviral agent according to the present embodiment, after the immersion step A, a part of the organic solvent is removed and antibacterial and / or less specific gravity than the predetermined solution. And an organic solvent removal step B for obtaining a substance having an antiviral action.

  In the organic solvent removing step B, a part of the organic solvent is removed using a filter medium to obtain a paste-like substance having antibacterial and / or antiviral action having a specific gravity smaller than that of the predetermined solution.

  In the organic solvent removal step B, for example, it is possible to select removal of the organic solvent by a method such as centrifugation, filtration with a filter medium, or reduced pressure, but filtration with a filter medium can most easily remove a part of the organic solvent. It is preferable because it is possible.

  Examples of the filter medium include filter paper, filter cloth, and porous material. Examples of the filter cloth include a woven fabric and a non-woven fabric, but are not particularly limited.

  In the surface treatment method of an article with an antibacterial and / or antiviral agent according to the present embodiment, the article having the antibacterial and / or antiviral action obtained by the organic solvent removing step B is contained in the predetermined solution, Has a coating process C for coating.

The coating treatment step C is performed by a method of spraying and applying to the surface of the article or a method of applying to the surface of the article by printing.
Examples of the method of spraying and applying to the surface of the article include spray coating. As a method of applying to the surface of the article by printing, for example, various printing methods such as gravure printing, offset printing, screen printing, and flexographic printing are used.

  The article is not particularly limited as long as the article has a predetermined surface or shape such as a metal article, a resin molded article, paper or cloth, and examples thereof include building materials, leather products, fibers, printed materials, and nonwoven fabrics. Specific examples include cash cards, doors, floors, walls, handrails, switches, furniture, toilet seats, bathrooms, carpets, mats, gloves, curtains, sheets, masks, towels, mops, mattresses, pillows, gauze, bandages, catheters, Endoscopes, endotracheal tubes, surgical garments, white robes, patient clothes, gowns, aprons, slippers, goggles, tableware, medical records, remote controls, filters, and the like.

  By the above method, an article subjected to an antibacterial treatment can be obtained by the surface treatment method of the article using an antibacterial and / or antiviral agent in the first embodiment according to the present invention.

  The surface treatment method of an article with an antibacterial and / or antiviral agent in the second embodiment according to the present invention is a method of surface treatment of an article with an antibacterial and / or antiviral agent that performs antibacterial and / or antiviral treatment. And a dipping step A in which a substance having an antibacterial and / or antiviral action having a specific gravity greater than that of the raw material of the article is immersed in an organic solvent having a specific gravity smaller than that of the raw material of the article for a predetermined time. . The raw material of the article is a resin.

  Examples of the resin include polypropylene, polyethylene, polyethylene terephthalate, nylon, polylactic acid, polyvinyl chloride, and thermoplastic elastomer.

  After the immersion step A, there is an organic solvent removal step B in which a part of the organic solvent is removed to obtain a substance having antibacterial and / or antiviral action having a specific gravity smaller than that of the raw material of the article.

  In the present embodiment, unlike the first embodiment, the antibacterial and / or antiviral action substance obtained by the organic solvent removal step B is mixed into the raw material. Step D is included.

  In the mixing step D, for example, the antibacterial and / or antiviral substance obtained in the organic solvent removing step B and the pigment, additive and resin are introduced into the tumbler and uniformly adhered to the resin. This is a step of obtaining a master batch by kneading at a temperature at which the resin is melted by an extruder, and then pelletizing, and the master batch can be supplied to the molding machine and molded into a predetermined shape.

  Alternatively, when supplying to the molding machine, a hopper and a quantitative feeder for supplying a substance having an antibacterial and / or antiviral action obtained by the organic solvent removing step B, a hopper and a quantitative feeder for supplying the raw materials, and others Prepare a hopper and a quantitative feeder that supply pigments and additives, set each hopper to be fed to the molding machine at a fixed rate, and mold it into a predetermined shape in the molding machine. is there. The pigments and additives are not particularly limited, and those used in the resin industry may be used.

As the molding machine, for example, various molding machines such as an injection molding machine, an extrusion molding machine, a compression molding machine, a pressure molding machine, a vacuum molding machine, a calendar roll machine, an FRP molding machine, and a blow molding machine can be appropriately selected. Further, the above molding machine examples may be used in combination.
The molding conditions vary depending on the molding method and the resin used as the raw material and the application. For example, if the resin is polypropylene and the molding is performed by an extruder, the molding condition is about 200 to 260 ° C.

  In the above description, parts not described are in accordance with the surface treatment method for articles using antibacterial and / or antiviral agents in the first embodiment of the present invention.

By the above method, an article subjected to antibacterial treatment can be obtained by the surface treatment method of the article with antibacterial and / or antiviral agents in the second embodiment according to the present invention.
In the second embodiment, the case where the raw material is resin has been described as an example. However, the present invention is not limited to this, and rubber may be used.

  According to the first embodiment of the present invention, the antibacterial and / or antiviral treatment is applied to the surface of the article with the antibacterial and / or antiviral agent, and the surface is obtained by applying the antibacterial and / or antiviral treatment. The article will be described with reference to the schematic diagram of FIG.

  A substance 12 having an antibacterial and / or antiviral action having a specific gravity greater than that of the predetermined solution 13 (for example, paint) is immersed in an organic solvent (not shown) having a specific gravity smaller than that of the paint 13 for a predetermined time. Accordingly, the substance 12 having antibacterial and / or antiviral action can be encapsulated with an organic solvent (not shown) and can have a specific gravity smaller than that of the paint 13.

  By incorporating into the paint 13 a substance 12 having antibacterial and / or antiviral action having a specific gravity lower than that of the paint 13 obtained by removing a part of the organic solvent (not shown), antibacterial and / or The substance 12 having the antiviral action appears on the paint surface 15 without being precipitated in the paint 13.

  By coating this on the article 10, the substance 12 having antibacterial and / or antiviral action on the surface 11 of the article 10 appears on the paint surface 15 because the specific gravity is smaller than that of the paint 13. Article 14 obtained by applying antibacterial and / or antiviral treatment to the surface of paint 13 which has hardened over time with substance 12 having antibacterial and / or antiviral action appearing on surface 15 of paint. Is obtained.

  In order to confirm the effectiveness of the surface treatment method according to the present invention, the present inventor conducted a test as follows.

(Comparative Example 1)
A comparative example 1 was obtained by cutting a polyethylene film having a thickness of 0.09 [mm] into a size of 50 [mm] × 50 [mm].
(Example 1)
160 [g] of benzalkonium chloride is weighed and immersed in 160 [g] of absolute ethanol previously weighed in a container for 7 days. After 7 days, the content of the container is naturally filtered with a filter paper until it becomes pasty to obtain a pasty antibacterial agent. Next, the paste-like antibacterial agent is added so as to have a ratio of 3 [w / w%] to the varnish to obtain an antibacterial varnish.
A sample piece obtained by cutting a piece of paper having a thickness of 0.2 [mm] into a size of 50 [mm] × 50 [mm] is prepared, ink is printed on the surface of the sample piece by a printing machine, and the ink Example 1 was obtained by applying a transparent varnish containing an antibacterial agent to the surface by printing so that the coating thickness was 450 [μm].

  Benzalkonium chloride was manufactured by Rasa Industrial Co., Ltd., absolute ethanol was manufactured by Dainichi Seika Kogyo Co., Ltd., and varnish was OP varnish manufactured by Miyako Ink. The specific gravity of benzalkonium chloride is 0.99, the specific gravity of OP varnish is 0.84, and the specific gravity of anhydrous alcohol is 0.80.

(Test procedure)
The test procedure was JIS Z 2801 “Antimicrobial Processed Products-Antibacterial Test Method / Antimicrobial Effect” 5.2 Antibacterial test of specimens by test methods such as plastic products. Moreover, the number of viable bacteria per test piece immediately after inoculation was confirmed using the sample piece of Comparative Example 1. What was used for the test is shown below.

<Coating film>
Polyethylene film Size 40 [mm] x 40 [mm], thickness 0.09 [mm]
<Bacterial fluid inoculation amount>
E. coli 0.4 [ml]
Staphylococcus aureus 0.4 [ml]
<Number of viable bacteria>
Escherichia coli 6.4 × 10 ⁵ / ml
Staphylococcus aureus 8.9 × 10 ⁵ / ml

Tables 1 and 2 show the results of the tests performed as described above. Table 1 shows the results of testing each sample piece using E. coli, and Table 2 shows the results of testing each sample piece using Staphylococcus aureus.
Not detected in the table indicates that the number of viable bacteria per test piece was less than 10. In calculating the average value, it is set to 10 for convenience.

In the test results using E. coli in Table 1, the average number of viable bacteria per test piece immediately after inoculation was 1.9 × 10 ⁵ , but the same test piece of Comparative Example 1 was used at 35 ° C., 24 When counted after time, the number of viable bacteria was almost equal to 2.8 × 10 ⁵ . However, in Example 1 to which the surface treatment of the present invention was applied, it was not detected (less than 10) when counted after 35 hours at 35 ° C., and the paste-like antibacterial agent was applied to the varnish. It can be seen that a remarkable antibacterial action appears by adding at a rate of 3 [w / w%].

In the test results using Staphylococcus aureus in Table 2, the average number of viable cells per test piece immediately after inoculation was 2.8 × 10 ⁵ , but the test piece of the same Comparative Example 1 was 35 ° C. When counted 24 hours later, the number of viable bacteria was almost the same as 3.3 × 10 ⁵ . However, in Example 1 to which the surface treatment of the present invention was applied, when it was counted after 35 hours at 35 ° C., it was 70, and as in the case of Escherichia coli, a remarkable antibacterial action appeared. I understand.

When the antibacterial activity value was calculated from the results of Tables 1 and 2, it was> 6.3 for Escherichia coli and 3.6 for Staphylococcus aureus.
In general, a test is conducted in accordance with JIS Z 2801 “Antimicrobial Processed Products—Antimicrobial Test Method / Antimicrobial Effect”, and an antimicrobial activity value of 2.0 or more is recognized as having an antimicrobial effect. And the result of Table 2 is a value which satisfies this.

  The antibacterial activity value was calculated by solving log (average value of viable cell count after 24 hours in Comparative Example 1 / average value of viable cell count after 24 hours in Example 1).

  The surface treatment method of an article with an antibacterial and / or antiviral agent according to the present invention can be applied to various articles such as paper and resin, and can sell and provide a surface-treated article. Has industrial applicability.

10 Article 11 Surface 12 Substance having antibacterial and / or antiviral action 13 Predetermined solution (paint)
14 Article 15 obtained by subjecting surface to antibacterial and / or antiviral treatment 15 Predetermined solution surface (coating surface)

Claims (14)

A method for surface treatment of an article with an antibacterial and / or antiviral agent for applying antibacterial and / or antiviral treatment,
A dipping step of immersing a substance having an antibacterial and / or antiviral action having a specific gravity greater than that of the predetermined solution applied to the surface of the article in an organic solvent having a specific gravity smaller than that of the predetermined solution;
After the immersion step, an organic solvent removing step of removing a part of the organic solvent to obtain a substance having antibacterial and / or antiviral action having a specific gravity smaller than that of the predetermined solution;
An antibacterial and / or antiviral agent characterized by having a coating treatment step of coating the article with a substance having antibacterial and / or antiviral action obtained by the organic solvent removal step in the predetermined solution. Article surface treatment method.   The organic solvent removing step removes a part of the organic solvent to obtain a paste-like substance having antibacterial and / or antiviral action having a specific gravity smaller than that of the predetermined solution. A method for surface treatment of articles with antibacterial and / or antiviral agents.   The antibacterial and / or antiviral action according to any one of claims 1 and 2, wherein the substance having antibacterial and / or antiviral action is any one or a combination of inorganic compounds having photocatalytic activity. A method for surface treatment of an article with a virus agent.   The method for surface treatment of an article with an antibacterial and / or antiviral agent according to any one of claims 1 to 3, wherein the predetermined time is 1 to 20 days.   The said organic solvent removal process removes a part of said organic solvent using a filter medium, The surface treatment of the articles | goods by the antibacterial and / or antiviral agent of any one of Claims 1-4 characterized by the above-mentioned. Method.   6. The antibacterial and / or antiviral agent product according to any one of claims 1 to 5, wherein the organic solvent is any alcohol or a mixture containing any of the alcohols. Surface treatment method.   The method for surface treatment of an article with an antibacterial and / or antiviral agent according to any one of claims 1 to 6, wherein the predetermined solution is any one of paint, ink or varnish.   The method for surface treatment of an article with an antibacterial and / or antiviral agent according to any one of claims 1 to 7, wherein the coating treatment step is applied by spraying onto the surface of the article.   The method for surface treatment of an article with an antibacterial and / or antiviral agent according to any one of claims 1 to 7, wherein the coating treatment step is applied to the surface of the article by printing. A method for surface treatment of an article with an antibacterial and / or antiviral agent for applying antibacterial and / or antiviral treatment,
An immersion step of immersing a substance having an antibacterial and / or antiviral action having a specific gravity greater than that of the raw material of the article in an organic solvent having a specific gravity smaller than that of the raw material of the article for a predetermined time;
After the immersion step, the organic solvent removing step of obtaining a substance having an antibacterial and / or antiviral action having a specific gravity smaller than the raw material of the article by removing a part of the organic solvent;
A method for treating the surface of an article with an antibacterial and / or antiviral agent, comprising a step of mixing a substance having an antibacterial and / or antiviral effect obtained by the organic solvent removing step into the raw material.   The method for treating a surface of an article with an antibacterial and / or antiviral agent according to claim 10, wherein the raw material of the article is a resin. An article obtained by applying antibacterial and / or antiviral treatment to the surface,
A substance having an antibacterial and / or antiviral action having a specific gravity greater than that of the predetermined solution applied to the surface of the article is immersed in an organic solvent having a specific gravity smaller than that of the predetermined solution for a predetermined time, An article obtained by coating the article with a substance having an antibacterial and / or antiviral action having a specific gravity smaller than that of the predetermined solution obtained by removing a part thereof. An article obtained by applying antibacterial and / or antiviral treatment to the surface,
A substance having an antibacterial and / or antiviral action having a specific gravity greater than that of the raw material of the article is immersed in an organic solvent having a specific gravity smaller than that of the raw material of the article for a predetermined time to remove a part of the organic solvent. An article obtained by mixing a substance having an antibacterial and / or antiviral action with a specific gravity smaller than that of the raw material of the article obtained in the above, into the raw material of the article.   The method for treating a surface of an article with an antibacterial and / or antiviral agent according to claim 12, wherein the substance having an antibacterial and / or antiviral action having a specific gravity smaller than that of the predetermined solution is a paste.