gloves

A glove coating with a polymer and visible light responsive photocatalyst, especially titanium oxide with a copper compound, addresses the lack of antiviral properties in existing gloves, providing effective virus decomposition in various environments.

JP7742701B2Active Publication Date: 2025-09-22DIC CORP
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Patent Information

Application Number
JP2020181319
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2020-10-29
Publication Date
2025-09-22
Estimated Expiration
2040-10-29

AI Technical Summary

Technical Problem

Existing gloves lack effective antiviral properties, posing a risk of virus transmission due to contamination.

Method used

A glove coating composed of a polymer other than urethane resin and a visible light responsive photocatalyst, particularly titanium oxide with a supported divalent copper compound, is developed to enhance antiviral properties.

Benefits of technology

The gloves exhibit excellent antiviral properties under both bright and dark conditions, effectively decomposing viruses under practical indoor lighting, suitable for industrial and medical applications.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a glove with antiviral property.SOLUTION: A glove is provided having a membrane formed of a composition containing a polymer (A) other than urethane resin and a visible light responsive photocatalyst (B). Examples of the polymer (A) include natural rubber, isoprene rubber, nitrile rubber, chloroprene rubber, butyl rubber, silicon rubber, polyvinyl chloride, polyethylene, polypropylene and the like. The visible light responsive photocatalyst is preferably one in which a metal compound is supported on titanium oxide (a). The titanium oxide (a) preferably contains rutile-type titanium oxide (a1).SELECTED DRAWING: None
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Description

[Technical Field]

[0001] The present invention relates to gloves having a coating made of a composition containing a visible light responsive photocatalyst. [Background technology]

[0002] Gloves are widely used in the medical, chemical, and machinery manufacturing industries, and are available in resin and rubber materials. Due to the coronavirus pandemic, there is an increased need to prevent the spread of viruses. As gloves worn to prevent infection can become a source of infection by contaminating them, there is growing interest in antiviral gloves. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2005-526889 Summary of the Invention [Problem to be solved by the invention]

[0004] The problem to be solved by the present invention is to provide gloves having antiviral properties. [Means for solving the problem]

[0005] The present invention provides a glove having a coating formed from a composition containing a polymer (A) other than a urethane resin and a visible light responsive photocatalyst (B). [Effects of the Invention]

[0006] The glove of the present invention has excellent antiviral properties and can be suitably used as an industrial glove in various fields such as the chemical industry, food industry, and medical industry. DETAILED DESCRIPTION OF THE INVENTION

[0007] The glove of the present invention has a film formed from a resin composition containing a polymer (A) other than a urethane resin and a visible light responsive photocatalyst (B).

[0008] The polymer (A) is a material other than urethane resin and is used as a raw material for gloves. Examples of the polymer (A) include natural rubber, isoprene rubber, nitrile rubber, chloroprene rubber, butyl rubber, silicone rubber, polyvinyl chloride, polyethylene, polypropylene, etc.

[0009] The content of the polymer (A) in the composition is preferably in the range of 40 to 99.7 parts by mass, more preferably in the range of 70 to 99.7 parts by mass, in terms of improving workability.

[0010] The visible light responsive photocatalyst (B) is an essential component for obtaining excellent antiviral properties, and examples thereof include a composition containing titanium oxide (a). In terms of obtaining even more excellent antiviral properties, titanium oxide (a) carrying a metal compound is preferred.

[0011] As the titanium oxide (a), for example, rutile-type titanium oxide (a1), anatase-type titanium oxide, brookite-type titanium oxide, etc. can be used. These titanium oxides may be used alone or in combination of two or more. Among these, it is preferable to contain rutile-type titanium oxide (a1) because it has excellent photocatalytic activity in the visible light region.

[0012] The content of the rutile-type titanium oxide (a1) (rutilated ratio) is preferably 15 mol % or more, more preferably 50 mol % or more, and even more preferably 90 mol % or more, in order to obtain even better antiviral properties in bright places and dark places, organic compound decomposition properties in bright places, and visible light responsiveness.

[0013] Generally, liquid-phase and gas-phase methods are known as methods for producing the titanium oxide (a). The liquid-phase method is a method in which titanium oxide is obtained by hydrolyzing or neutralizing titanyl sulfate obtained from a solution in which a raw ore such as ilmenite is dissolved. The gas-phase method is a method in which titanium oxide is obtained by a gas-phase reaction between oxygen and titanium tetrachloride, which is obtained by chlorinating a raw ore such as rutile. One way to distinguish between titanium oxides produced by the two methods is to analyze their impurities. Titanium oxide produced by the liquid-phase method contains zirconium, niobium, and other impurities derived from the ilmenite ore. In contrast, the gas-phase method includes a step of purifying titanium tetrachloride to remove impurities, so the titanium oxide contains almost no impurities.

[0014] Although titanium oxide produced by the gas phase method has the advantage of being able to produce uniform particle diameters, it is thought that secondary aggregates are difficult to form, which increases the apparent specific surface area and therefore increases the viscosity of the mixed solution during the reaction process. In contrast, titanium oxide (a) produced by the liquid phase method is thought to produce loose secondary aggregates during the calcination process, and has low cohesive force relative to the specific surface area (BET value) caused by primary particles, making it possible to suppress the viscosity of the mixed solution. For these reasons, titanium oxide (a) produced by the liquid phase method is preferred because it can further improve the productivity of the visible light responsive photocatalyst (B) and the abrasion resistance, flex resistance, flexibility, durability, and chemical resistance of the glove.

[0015] The BET specific surface area of ​​the titanium oxide (a) is preferably 1 to 200 m, in order to obtain even more excellent antiviral properties and visible light responsiveness. 2 / g, and 3 to 100m 2 / g is more preferable, and the range is 4 to 70m 2 / g is more preferable, and the range is 8 to 50m 2 The range of 7.5 to 9.5 m / g is more preferable because the productivity of the visible light responsive photocatalyst (B) can be further increased. 2The BET specific surface area of ​​the rutile-type titanium oxide (a1) is preferably in the range of 1 / g. The method for measuring the BET specific surface area of ​​the rutile-type titanium oxide (a1) will be described in the Examples below.

[0016] The primary particle diameter of the titanium oxide (a) is preferably in the range of 0.01 to 0.5 μm, more preferably 0.06 to 0.35 μm, in order to obtain even better antiviral properties and visible light responsiveness. The primary particle diameter of the titanium oxide (a) is measured by directly measuring the size of primary particles from electron micrographs using a transmission electron microscope (TEM). Specifically, the minor axis diameter and major axis diameter of each primary particle of titanium oxide are measured, and the average is taken as the particle diameter of the primary particles. Next, the volume (weight) of each of 100 or more titanium oxide particles is calculated by approximating it to the cube of the calculated particle diameter, and the volume-average particle diameter is taken as the average primary particle diameter.

[0017] Furthermore, as the visible light responsive photocatalyst, it is preferable to use a titanium oxide (a) carrying a metal compound, since this further improves the photocatalytic activity in the visible light region and makes it easier to exhibit appropriate activity capable of decomposing dirt components under practical indoor lighting.

[0018] Examples of the metal compound that can be used include copper compounds, iron compounds, and tungsten compounds. Among these, copper compounds are preferred, and divalent copper compounds are more preferred, because they provide even more excellent antibacterial and antiviral properties. Known methods can be used to support the metal compound on the titanium oxide (a).

[0019] Next, the most preferred embodiment, that is, the method for supporting a divalent copper compound on titanium oxide (a), will be described.

[0020] An example of a method for supporting a divalent copper compound on the titanium oxide (a) is a method including a mixing step (i) of titanium oxide (a) containing rutile-type titanium oxide (a1), a divalent copper compound raw material (b), water (c), and an alkaline substance (d).

[0021] The concentration of the titanium oxide (a) in the mixing step (i) is preferably in the range of 3 to 40% by mass. In the present invention, when titanium oxide (a) produced by a liquid phase method is used, the mixing step can be carried out with ease of handling even if the concentration of titanium oxide (a) is increased, and specifically, the mixing step can be carried out satisfactorily even if the concentration of titanium oxide (a) is in the range of more than 25% by mass but not more than 40% by mass.

[0022] As the divalent copper compound raw material (b), for example, a divalent copper inorganic compound, a divalent copper organic compound, etc. can be used.

[0023] Examples of the divalent copper inorganic compound that can be used include inorganic acid salts of divalent copper such as copper sulfate, copper nitrate, copper iodate, copper perchlorate, copper oxalate, copper tetraborate, ammonium copper sulfate, copper amidosulfate, ammonium copper chloride, copper pyrophosphate, and copper carbonate; divalent copper halides such as copper chloride, copper fluoride, and copper bromide; copper oxide, copper sulfide, azurite, malachite, and copper azide. These compounds may be used alone or in combination of two or more.

[0024] Examples of the divalent copper organic compounds include copper formate, copper acetate, copper propionate, copper butyrate, copper valerate, copper caproate, copper enanthate, copper caprylate, copper pelargonate, copper caprate, copper myristic acid, copper palmitate, copper margarate, copper stearate, copper oleate, copper lactate, copper malate, copper citrate, copper benzoate, copper phthalate, copper isophthalate, copper terephthalate, copper salicylate, copper mellitic acid, copper oxalate, copper malonate, copper succinate, copper glutarate, copper adipate, copper fumarate, glycol Examples of compounds that can be used include copper nitrate, copper glycerate, copper gluconate, copper tartrate, copper acetylacetonate, copper ethylacetoacetate, copper isovalerate, copper β-resorcylate, copper diacetoacetate, copper formylsuccinate, copper salicylamine, copper bis(2-ethylhexanoate), copper sebacate, copper naphthenate, copper oxine, copper acetylacetonate, copper ethylacetoacetate, copper trifluoromethanesulfonate, copper phthalocyanine, copper ethoxide, copper isopropoxide, copper methoxide, and copper dimethyldithiocarbamate. These compounds may be used alone or in combination of two or more.

[0025] As the divalent copper compound raw material (b), among those mentioned above, it is preferable to use one represented by the following general formula (1). CuX2(1) (In formula (1), X is a halogen atom, CH3COO, NO3, or (SO4) 1 / 2 indicates.)

[0026] X in the formula (1) is more preferably a halogen atom, and even more preferably a chlorine atom.

[0027] The amount of the divalent copper compound raw material (b) used in the mixing step (i) is preferably in the range of 0.01 to 20 parts by mass, more preferably in the range of 0.1 to 15 parts by mass, and even more preferably in the range of 0.3 to 10 parts by mass, relative to 100 parts by mass of the titanium oxide (a).

[0028] The water (c) is a solvent used in the mixing step (i), and preferably water alone, but may contain other solvents as needed. Examples of the other solvents that can be used include alcohol solvents such as methanol, ethanol, 1-propanol, 2-propanol, and 1-butanol; ketone solvents such as methyl ethyl ketone and methyl isobutyl ketone; dimethylformamide, tetrahydrofuran, and the like. These solvents may be used alone or in combination of two or more.

[0029] Examples of the alkaline substance (d) that can be used include sodium hydroxide, potassium hydroxide, tetramethylammonium hydroxide, tetrabutylammonium hydroxide, triethylamine, trimethylamine, ammonia, and basic surfactants, and it is preferable to use sodium hydroxide.

[0030] The alkaline substance (d) is preferably added as a solution in order to facilitate control of the reaction, and the concentration of the alkaline solution to be added is preferably in the range of 0.1 to 5 mol / L, more preferably in the range of 0.3 to 4 mol / L, and even more preferably in the range of 0.5 to 3 mol / L.

[0031] The mixing step (i) can be performed by mixing the titanium oxide (a), the divalent copper compound raw material (b), water (c), and the alkaline substance (d). For example, the titanium oxide (a) can be first mixed with the water (c) and stirred as necessary, then the divalent copper compound raw material (b) is added and stirred, and then the alkaline substance (d) is added and stirred. By this mixing step (i), the divalent copper compound derived from the divalent copper compound raw material (b) is supported on the titanium oxide (a).

[0032] The total stirring time in the mixing step (i) is, for example, 5 to 120 minutes, and preferably 10 to 60 minutes. The temperature during the mixing step (i) is, for example, in the range of room temperature to 70°C.

[0033] In order to ensure good support of the divalent copper compound on the titanium oxide (a), the titanium oxide (a), the divalent copper compound raw material (b), and water (c) are mixed and stirred, and then the alkaline substance (d) is mixed and stirred. The pH of the mixture obtained is preferably in the range of 8 to 11, and more preferably in the range of 9.0 to 10.5.

[0034] After the mixing step (i) is completed, the mixture can be separated as a solid content. Examples of the separation method include filtration, sedimentation, centrifugation, and evaporation / drying, with filtration being preferred. The separated solid content may then be washed with water, crushed, classified, etc., as necessary.

[0035] After obtaining the solid content, it is preferable to heat-treat the solid content in order to more firmly bond the divalent copper compound derived from the divalent copper compound raw material (b) supported on the titanium oxide (a). The heat treatment temperature is preferably in the range of 150 to 600°C, more preferably in the range of 250 to 450°C. The heat treatment time is preferably 1 to 10 hours, more preferably 2 to 5 hours.

[0036] By the above method, a titanium oxide composition containing titanium oxide in which a divalent copper compound is supported on titanium oxide (a) can be obtained. The amount of the divalent copper compound supported on the titanium oxide (a) is preferably in the range of 0.01 to 20 parts by mass per 100 parts by mass of titanium oxide (a) from the viewpoint of photocatalytic activity including antiviral activity. The amount of the divalent copper compound supported can be adjusted by the amount of the divalent copper compound raw material (b) used in the mixing step (i).

[0037] The content of the visible light responsive photocatalyst (B) in the composition is preferably in the range of 0.3 to 60 parts by mass, more preferably in the range of 0.3 to 30 parts by mass, in terms of improving antiviral properties.

[0038] The resin composition used in the present invention contains the polymer (A) and the visible light responsive photocatalyst (B) as essential components, but may contain other additives as needed.

[0039] Examples of the other additives that can be used include organic solvents, water, vulcanizing agents, thickeners, antifoaming agents, catalysts, silane coupling agents, fillers, plasticizers, coagulants, thixotropy-imparting agents, tackifiers, waxes, heat stabilizers, light resistance stabilizers, fluorescent brighteners, foaming agents, foam stabilizers, pigments, dyes, conductivity-imparting agents, antistatic agents, moisture permeability-imparting agents, water repellents, oil repellents, antiblocking agents, hydrolysis inhibitors, etc. These additives may be used alone or in combination of two or more.

[0040] The composition of the present invention can be used not only for gloves but also for medical tubes such as catheter tubes, contraceptive devices, and the like.

[0041] Examples of a method for producing a glove having a film made of the composition include a method of immersing a hand mold, a tube mold or the like in a bath of the composition, or a method of coating a hand mold, a tube mold or the like with the composition and then drying the coated glove.

[0042] The hand or tube may be fitted in advance with a glove-like or tube-like article made of knitted material such as nylon fiber.

[0043] The knitted fabric is not limited to nylon fibers, but may be made of polyester fibers, aramid fibers, polyethylene fibers, cotton, etc. Also, woven fabrics made of the above fibers may be used instead of the knitted fabric. Also, glove-shaped or tubular articles made of resin materials such as polyvinyl chloride, natural rubber, or synthetic rubber may be used instead of the knitted fabric.

[0044] As described above, the gloves of the present invention have excellent antiviral properties. Therefore, the gloves of the present invention can be suitably used as industrial gloves in various fields such as the chemical industry, food industry, and medical industry. [Example]

[0045] The present invention will be described in more detail below using examples.

[0046] [Preparation Example 1] (1) Titanium oxide a) Crystalline rutile titanium dioxide b) Manufacturing method: Liquid phase method (sulfuric acid method) c) Physical properties ·BET specific surface area: 9.0m 2 / g Rutile rate: 95.4% ·Primary particle size: 0.18μm

[0047] (2) Manufacturing process a) Mixing process (reaction process) 600 parts by mass of the titanium oxide, 8 parts by mass of copper(II) chloride dihydrate, and 900 parts by mass of water were mixed in a stainless steel container. The mixture was then stirred with a mixer ("Robomix" manufactured by Tokushu Kika Kogyo Co., Ltd.), and a 1 mol / L aqueous solution of sodium hydroxide was added dropwise until the pH of the mixture reached 10. b) Dehydration process The mixture was filtered under reduced pressure using qualitative filter paper (5C) to separate the solid matter from the mixture, and then washed with ion-exchanged water. The washed solid matter was then dried at 120°C for 12 hours to remove moisture. After drying, a powdery titanium oxide composition was obtained using a mill (Iwatani Sangyo Co., Ltd.'s "Miller"). c) Heat treatment process The mixture was heat-treated at 450°C for 3 hours in the presence of oxygen using a precision incubator (DH650 manufactured by Yamato Scientific Co., Ltd.) to obtain a titanium oxide composition containing titanium oxide carrying a divalent copper compound. The amount of the divalent copper compound carried on the titanium oxide supporting the divalent copper compound was 0.5% by mass relative to the titanium oxide.

[0048] [Preparation Example 2] 25 parts of the titanium oxide composition obtained in Preparation Example 1, 75 parts of water, and 1 part of a dispersant (SN Dispersant 5023, manufactured by San Nopco Ltd.) were mixed and stirred, and 100 parts of 1.0 mm diameter ceramic beads were added, followed by grinding with a sand grinder for 4 hours. After grinding was completed, the beads and the dispersion were separated to obtain a titanium oxide composition dispersion.

[0049] [Preparation Example 3] A natural rubber composition was obtained by mixing 100 parts by mass of natural rubber (Musashino Chemical Co., Ltd.'s "Coatex Natural Rubber Latex HA" non-volatile content: 60% by mass), 5 parts by mass of a 5% by mass aqueous potassium hydroxide solution, 1.2 parts by mass of a sulfur-water dispersion, 1.2 parts by mass of a zinc oxide aqueous dispersion, and 1.2 parts by mass of a zinc diethylcarbamate aqueous dispersion.

[0050] [Preparation Example 4] A nitrile rubber composition was obtained by mixing 100 parts by mass of nitrile rubber (NIPOL LX550 manufactured by Nippon Zeon Co., Ltd., non-volatile content: 45% by mass), 7.5 parts by mass of a 5% by mass aqueous potassium hydroxide solution, 1 part by mass of a sulfur water dispersion, 3 parts by mass of a zinc oxide water dispersion, and 1 part by mass of a zinc diethylcarbamate water dispersion.

[0051] [Preparation Example 5] An isoprene rubber composition was obtained by mixing 100 parts by mass of isoprene rubber (Sumitomo Seika Chemicals Co., Ltd., "Seporex IR100", non-volatile content: 65% by mass), 1.5 parts by mass of a 5% by mass aqueous potassium hydroxide solution, 4 parts by mass of a sulfur water dispersion, 0.5 parts by mass of a zinc oxide water dispersion, 1.5 parts by mass of a zinc diethylcarbamate water dispersion, and 1.5 parts by mass of 2-mercaptobenzothiazole zinc.

[0052] [Preparation Example 6] A chloroprene rubber composition was obtained by mixing 100 parts by mass of chloroprene rubber (Showa Denko K.K. "Shopren 671A" non-volatile content: 59% by mass), 1.5 parts by mass of a 5% by mass aqueous potassium hydroxide solution, 5.5 parts by mass of a zinc oxide aqueous dispersion, 2.5 parts by mass of an N,N-diphenylthiolactic acid aqueous dispersion, and 4.5 parts by mass of a 1,3-diphenylguanidine aqueous dispersion.

[0053] [Example 1] A composition was obtained by blending 1 part by mass of the titanium oxide composition dispersion obtained in Preparation Example 2 with 100 parts by mass of the natural rubber composition obtained in Preparation Example 3.

[0054] <Making gloves (thin)> The gloves were made by the following procedure. (1) A ceramic handprint is immersed in a 10% by mass aqueous solution of calcium nitrate and then removed. (2) Dry the hand mold from (1) at 70°C for 2 minutes. (3) The hand mold from (2) is immersed in the composition for 5 seconds and then removed. (4)(3) Wash the handprint with water. (5) The hand mold from (4) is dried at 70°C for 20 minutes, then at 120°C for 30 minutes. (6) Apply baby powder to the handprint (5) and peel off the film from the handprint.

[0055] [Example 2] A composition and a glove were obtained in the same manner as in Example 1, except that 100 parts by mass of the natural rubber composition was changed to 100 parts by mass of the nitrile rubber composition obtained in Preparation Example 4.

[0056] [Example 3] A composition and a glove were obtained in the same manner as in Example 1, except that 100 parts by mass of the natural rubber composition was changed to 100 parts by mass of the isoprene rubber composition obtained in Preparation Example 5.

[0057] [Example 4] A composition and a glove were obtained in the same manner as in Example 1, except that 100 parts by mass of the natural rubber composition was changed to 100 parts by mass of the chloroprene rubber composition obtained in Preparation Example 6.

[0058] [Example 5] A composition and a glove were obtained in the same manner as in Example 1, except that the blending amount of the titanium oxide composition dispersion obtained in Preparation Example 2 was changed to 20 parts by mass.

[0059] [Example 6] A composition and a glove were obtained in the same manner as in Example 1, except that the blending amount of the titanium oxide composition dispersion obtained in Preparation Example 2 was changed to 80 parts by mass.

[0060] <Making gloves (thick)> The gloves were made by the following procedure. (1) Put a nylon knitted glove on an aluminum hand mold, immerse it in a 5% by mass calcium nitrate aqueous solution for 10 seconds, and then remove it. (2) The hand mold from (1) is immersed in the composition for 2 seconds to form a solidified film of the composition on the surface of the knitted glove, and then the glove is removed. (3) (2) Immerse the hand mold in water for 30 minutes and then remove it. (4) The hand mold from (3) is dried at 70°C for 20 minutes, then at 120°C for 30 minutes. (5) Peel off the glove coated with the coagulated film from the hand mold in (4).

[0061] [Example 7] The composition obtained in Example 1 was used to obtain gloves (thick).

[0062] [Example 8] The composition obtained in Example 2 was used to obtain gloves (thick).

[0063] [Example 9] A film composition was obtained using an extruder equipped with a T-die (manufactured by Toyo Seiki Seisaku-sho, "Laboplastomill") from 4 parts of the titanium oxide composition obtained in Preparation Example 1 and 100 parts of a low-density polyethylene resin (manufactured by Japan Polyethylene Co., Ltd., "Novatec LL UF442") Two sheets of the obtained film composition were sandwiched between heated glove-shaped molds and heat-sealed to obtain gloves (thin).

[0064] [Comparative Example 1] A composition and a glove were obtained in the same manner as in Example 1, except that the blending amount of the titanium oxide composition dispersion obtained in Preparation Example 2 was changed to 0 parts by mass.

[0065] Comparative Example 2 Gloves were obtained in the same manner as in Example 9, except that the amount of the titanium oxide composition in Example 9 was changed to 0 parts by mass.

[0066] [Method for measuring number average molecular weight] The number average molecular weights of the polyols and the like used in the synthesis examples are values ​​measured by gel permeation chromatography (GPC) under the following conditions.

[0067] Measurement equipment: High-speed GPC equipment (Tosoh Corporation "HLC-8220GPC") Column: The following columns manufactured by Tosoh Corporation were connected in series and used. "TSKgel G5000" (7.8mm I.D. x 30cm) x 1 "TSKgel G4000" (7.8mm I.D. x 30cm) x 1 "TSKgel G3000" (7.8mm I.D. x 30cm) x 1 "TSKgel G2000" (7.8mmI.D. x 30cm) x 1 Detector: RI (differential refractometer) Column temperature: 40℃ Eluent: tetrahydrofuran (THF) Flow rate: 1.0mL / min Injection volume: 100 μL (sample concentration 0.4% by mass in tetrahydrofuran solution) Standard sample: A calibration curve was prepared using the following standard polystyrene.

[0068] (standard polystyrene) Tosoh Corporation's "TSKgel Standard Polystyrene A-500" Tosoh Corporation's "TSKgel Standard Polystyrene A-1000" Tosoh Corporation's "TSKgel Standard Polystyrene A-2500" Tosoh Corporation's "TSKgel Standard Polystyrene A-5000" Tosoh Corporation's "TSKgel Standard Polystyrene F-1" Tosoh Corporation's "TSKgel Standard Polystyrene F-2" Tosoh Corporation's "TSKgel Standard Polystyrene F-4" Tosoh Corporation's "TSKgel Standard Polystyrene F-10" Tosoh Corporation's "TSKgel Standard Polystyrene F-20" Tosoh Corporation's "TSKgel Standard Polystyrene F-40" Tosoh Corporation's "TSKgel Standard Polystyrene F-80" Tosoh Corporation's "TSKgel Standard Polystyrene F-128" Tosoh Corporation's "TSKgel Standard Polystyrene F-288" Tosoh Corporation's "TSKgel Standard Polystyrene F-550"

[0069] [Method for measuring the amount of divalent copper compound supported on titanium oxide] The titanium oxide composition obtained in Preparation Example 1 was completely dissolved in a hydrofluoric acid solution, and the extract was analyzed using an ICP emission spectrometer to quantify the amount of divalent copper compound supported on titanium oxide (a) (amount of divalent copper compound supported (parts by mass) / titanium oxide (a) (parts by mass)).

[0070] [Antiviral evaluation] The gloves obtained in the examples and comparative examples were subjected to an anti-phage virus test (see JIS R1756:2020).

[0071] 1) The light irradiation conditions were white fluorescent light with ultraviolet rays cut off by an N113 filter, and the illuminance was set to 500 lux. 2) The palm of the glove (thin) obtained in the Examples and Comparative Examples was cut into a 5 cm x 5 cm piece, placed on a 5 cm x 5 cm glass plate, and 100 μL of a Qβ phage solution with a known concentration was dropped onto it. The sample was sandwiched between 5 cm glass plates to prepare an evaluation sample. 3) The palm of each glove (thick) obtained in the Examples and Comparative Examples was cut into a 5 cm x 5 cm piece, and 100 μL of a Qβ phage solution of known concentration was dropped onto the urethane resin surface. A 4 cm x 4 cm adhesive film was then placed over the piece to prepare a sample for evaluation. 4) After 8 hours of light exposure, the sample was collected in SCDLP solution, diluted appropriately, infected with E. coli, spread on an agar medium, and evaluated by counting the number of colonies after incubation. Antiviral activity was evaluated by the degree of inactivation of Qβ phage, with an inactivation level of -2 to -5 being rated as "good" for antiviral activity.

[0072] [Table 1]

[0073] [Table 2]

[0074] [Table 3]

[0075] It was found that the gloves of Examples 1 to 9 of the present invention had excellent antiviral properties.

[0076] On the other hand, Comparative Examples 1 and 2 are embodiments in which the visible light responsive photocatalyst (B) is not used, and the antiviral properties were poor.

Claims

1. A glove having a coating formed from a composition containing a polymer (A) other than a urethane resin and a visible light responsive photocatalyst (B), the visible light responsive photocatalyst is a titanium oxide (a) having a metal compound supported thereon, A glove, wherein the titanium oxide (a) contains rutile type titanium oxide (a1).

2. The glove according to claim 1, wherein the polymer (A) is at least one selected from the group consisting of natural rubber, isoprene rubber, nitrile rubber, chloroprene rubber, butyl rubber, silicone rubber, polyvinyl chloride, polyethylene, and polypropylene.

3. 3. The glove according to claim 1, wherein the metal compound is a divalent copper compound.

4. The glove according to claim 1 or 2, wherein the content of said rutile type titanium oxide (a1) in said titanium oxide (a) is 90 mol% or more.

5. The glove according to claim 1 or 2, wherein the amount of the metal compound supported is in the range of 0.01 to 20 parts by mass per 100 parts by mass of the titanium oxide (a).

Citation Information

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