WO2024166341A1 - 抗ウイルス性コーティング膜、抗ウイルス性コーティング膜の製造方法及びコーティング物品 - Google Patents

抗ウイルス性コーティング膜、抗ウイルス性コーティング膜の製造方法及びコーティング物品 Download PDF

Info

Publication number
WO2024166341A1
WO2024166341A1 PCT/JP2023/004489 JP2023004489W WO2024166341A1 WO 2024166341 A1 WO2024166341 A1 WO 2024166341A1 JP 2023004489 W JP2023004489 W JP 2023004489W WO 2024166341 A1 WO2024166341 A1 WO 2024166341A1
Authority
WO
WIPO (PCT)
Prior art keywords
coating film
antiviral
plate
binder resin
particles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2023/004489
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
佑 泉谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2024576032A priority Critical patent/JPWO2024166341A1/ja
Priority to PCT/JP2023/004489 priority patent/WO2024166341A1/ja
Publication of WO2024166341A1 publication Critical patent/WO2024166341A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D201/00—Coating compositions based on unspecified macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides

Definitions

  • the present disclosure relates to an antiviral coating film formed on the surface of a substrate, a method for producing an antiviral coating film, and a coated article.
  • pandemics in which infectious diseases transmitted by various pathogenic microorganisms spread rapidly in a short period of time, have become a problem, and deaths due to infection with viruses such as coronavirus, norovirus, and avian influenza have been reported.
  • Patent Document 1 discloses an antimicrobial member in which a cured binder containing an antimicrobial component is fixed to the surface of a substrate, and the arithmetic mean roughness of the substrate surface containing the cured binder, in accordance with JIS (Japanese Industrial Standards) B 0601, is greater than 4 ⁇ m and less than 50 ⁇ m.
  • JIS Japanese Industrial Standards
  • Patent Document 2 discloses an antiviral surface treatment method for a component that uses a shot blasting method to randomly form an infinite number of minute irregularities on the surface of the component, with the minimum irregularity pitch being 0.3 ⁇ m or more and the maximum being 1.0 ⁇ m or less, and the minimum recess depth being 0.01 ⁇ m or more and the maximum being 0.3 ⁇ m or less, thereby imparting an antiviral effect to the surface of the component.
  • the virus inactivation technology using antiviral agents shown in Patent Document 1 has issues such as the generation of drug-resistant mutant viruses and the adverse effects on the human body.
  • the cost can be high, limiting the uses for which it can be used, which can also be a cost issue.
  • the surface treatment method disclosed in Patent Document 2 is a useful surface treatment technique for components that can be given an uneven surface shape by shot blasting.
  • the component is made of a material that can be plastically deformed, such as resin or metal, it is thought that it is possible to form unevenness on the surface by shot blasting, but for components made of materials that deform elastically without plastic deformation, such as rubber, it is difficult to form unevenness on the surface of the component even if shot blasting is used.
  • the present disclosure has been made in consideration of the above, and aims to obtain an antiviral coating film that can impart antiviral properties to the surfaces of various components without containing an antiviral agent.
  • the antiviral coating film according to the present disclosure is an antiviral coating film formed on the surface of a substrate, and includes a plurality of plate-like inorganic particles and a binder resin for agglomerating the plurality of plate-like inorganic particles.
  • the amount of the plurality of plate-like inorganic particles is 200 volume % or more and 2000 volume % or less with respect to the content of the binder resin.
  • the thickness of the antiviral coating film is 1 ⁇ m or more and 100 ⁇ m or less.
  • the average primary particle diameter of the plurality of plate-like inorganic particles is 1 ⁇ m or more and 50 ⁇ m or less.
  • the average thickness of the plurality of plate-like inorganic particles is 5 nm or more and 50 nm or less.
  • the antiviral coating film according to the present disclosure has the effect of imparting antiviral properties to the surfaces of various components without containing an antiviral agent.
  • FIG. 3 is a cross-sectional view showing the intervals between convex portions on the surface of the antiviral coating film according to the first embodiment.
  • FIG. 1 is a cross-sectional view of an antiviral member 1 according to the first embodiment.
  • FIG. 1 shows a schematic cross-section of the antiviral member 1.
  • the antiviral member 1 has a substrate 10 and an antiviral coating film 11 located on the surface of the substrate 10.
  • FIG. 1 shows a schematic cross-section of the antiviral coating film 11.
  • the antiviral coating film 11 is formed on the surface of the substrate 10.
  • the substrate 10 is formed of polystyrene.
  • the antiviral coating film 11 has a plurality of plate-like inorganic particles 20 and a binder resin 30 for aggregating the plurality of plate-like inorganic particles 20.
  • each of the plurality of plate-like inorganic particles 20 is a calcium silicate particle
  • the binder resin 30 is a hydrophilic resin.
  • the amount of the multiple plate-like inorganic particles 20 is 200 volume % or more and 2000 volume % or less relative to the content of the binder resin 30.
  • the thickness of the antiviral coating film 11 is 1 ⁇ m or more and 100 ⁇ m or less.
  • the average primary particle diameter of the multiple plate-like inorganic particles 20 is 1 ⁇ m or more and 50 ⁇ m or less. In this application, "average primary particle diameter" means the average particle diameter measured by a light scattering method.
  • the average thickness of the multiple plate-like inorganic particles 20 is 5 nm or more and 50 nm or less.
  • the antiviral member 1 can be formed by applying a coating composition obtained by dissolving and dispersing a plurality of plate-like inorganic particles 20 and a binder resin 30 in water or a solvent to the surface of the substrate 10, and then drying the applied coating composition and the substrate 10.
  • the binder resin 30 used in the antiviral coating film 11 and the coating composition is preferably a solvent-soluble resin or a water-dispersible resin.
  • ISO International Organization for Standardization
  • the test virus liquid is inoculated onto the surface of the test piece, and the test is performed with a resin film covering the surface to prevent the test virus liquid from drying, and the change in the virus concentration is evaluated.
  • the binder resin used in the antiviral coating film has poor water resistance, dissolution, swelling, or peeling of the binder resin may occur during the antiviral evaluation test, so a water-soluble resin is not preferable as the binder resin 30.
  • the binder resin 30 is a solvent-soluble resin or a water-dispersible resin, an acrylic resin, a urethane resin, a fluorine resin, a silicone resin, or the like can be used as the binder resin 30. Furthermore, multiple of these resins may be used to form the binder resin 30.
  • solvent-soluble or water-dispersible resins used in the antiviral coating film 11 and the binder resin 30 contained in the coating composition include a resin manufactured by Daicel Allnex Corporation under the trade name "DAOTAN VTW 1265”, a resin manufactured by Daicel Allnex Corporation under the trade name “DAOTAN TW 6450”, a resin manufactured by Daicel Allnex Corporation under the trade name “VIACRYL VSC 6254w”, a resin manufactured by Daicel Allnex Corporation under the trade name “VIACRYL VSC 6286w”, Resins that can be used include those manufactured by Mitsubishi Chemical Corporation under the product name "Nichigo Polyester WR-901", those manufactured by Mitsubishi Chemical Corporation under the product name "Nichigo Polyester WR-905", those manufactured by Sanyo Chemical Industries Co., Ltd.
  • the binder resin 30 is preferably a water-dispersible resin with a high resin acid value, and in particular, a water-dispersible resin with an acid value of 30 mgKOH/g or more is preferable.
  • a water-dispersible resin for example, a resin manufactured by Mitsubishi Chemical Corporation under the trade name "Nichigo Polyester WR-961", a resin manufactured by Mitsubishi Chemical Corporation under the trade name “Nichigo Polyester W-1031", or a resin manufactured by Daicel Allnex Corporation under the trade name "SETAQUA 6302" can be used.
  • the antiviral coating film 11 may be subjected to a surface treatment.
  • the surface treatment include the introduction of hydroxyl groups (-OH) and amino groups (-NH 2 ) to the resin surface using a reactive agent such as a silane coupling agent, or the formation of a polymer brush by a surface grafting treatment.
  • Materials for the plate-like inorganic particles 20 used in the antiviral coating film 11 include smectite, tobermorite, bentonite, kaolin, mica, boehmite, aluminum, alumina, silica, calcium silicate, calcium carbonate, silicate minerals, boron nitride, graphene, titanium oxide, hydroxide compounds, carbonate compounds, phosphate compounds, silicate compounds, titanate compounds, etc.
  • Examples of the plate-like inorganic particles 20 include particles manufactured by Nippon Insulation Co., Ltd. under the trade name "Tobermorite TJ", particles manufactured by Kawai Lime Industries Co., Ltd. under the trade name "Cerasure BMF", particles manufactured by Kawai Lime Industries Co., Ltd.
  • tobermorite a type of calcium silicate hydrate
  • tobermorite TJ finely divided particles of tobermorite, manufactured by Nippon Insulation Co., Ltd. under the trade name "Tobermorite TJ”
  • Tobermorite TJ finely divided particles of tobermorite, manufactured by Nippon Insulation Co., Ltd. under the trade name "Tobermorite TJ”
  • tobermorite has excellent chemical stability, and can suppress the occurrence of corrosion, etc., in the substrate 10 to which the coating composition is applied.
  • the substrate 10 used to form the antiviral coating film 11 is not particularly limited and can be appropriately selected according to the type of product in which the antiviral member 1 is used.
  • Examples of the substrate 10 include metal substrates such as aluminum substrates or stainless steel substrates, glass substrates, plastic substrates, and ceramic substrates.
  • Fig. 2 is a cross-sectional view showing the intervals between convex portions on the surface of the antiviral coating film 11 according to embodiment 1.
  • Fig. 2 is a schematic diagram showing the cross section of the antiviral coating film 11.
  • Fig. 2 can also be said to be a schematic diagram showing the cross section of the antiviral member 1.
  • the intervals between adjacent convex portions among the concave and convex portions on the surface of the antiviral coating film 11 are expressed as D1 , D2 , ..., Dx , corresponding to the number of convex portions.
  • the average interval is the interval obtained by averaging the intervals between all convex portions.
  • the arithmetic mean roughness on the surface of the antiviral coating film 11 is 0.5 ⁇ m or more and 10 ⁇ m or less, and the average interval is 20 nm or more and 1 ⁇ m or less. If the arithmetic mean roughness is less than 0.5 ⁇ m, it is not preferable because the antiviral coating film 11 is susceptible to surface contamination by materials other than viruses. If the arithmetic mean roughness is more than 10 ⁇ m, it is not preferable because virus particles tend to adhere to the surface of the plate-like inorganic particles 20. If the average interval is less than 20 nm, it is not preferable because the average interval is small compared to the virus particles. If the average interval is more than 1 ⁇ m, it is not preferable because the average interval is large compared to the virus particles, and virus particles adhere to the gaps between the protrusions.
  • a surface roughness measurement method conforming to JIS B 0601 can be used to measure the arithmetic mean roughness of the surface of the antiviral coating film 11.
  • a measurement method using a laser microscope or an electron microscope capable of non-contact measurement is preferred as a method for measuring the arithmetic mean roughness.
  • a method using a stylus surface roughness measurement instrument or an atomic force microscope is not preferred as a method for measuring the arithmetic mean roughness, since it may cause damage to the surface of the antiviral coating film 11, depending on the strength of the antiviral coating film 11.
  • a laser microscope, an electron microscope, or an atomic force microscope can be used depending on the size or aggregation state of the plate-like inorganic particles 20.
  • Fig. 3 is a cross-sectional view of the antiviral member 2 according to the second embodiment.
  • Fig. 3 shows a schematic cross-section of the antiviral member 2.
  • the antiviral member 2 has a substrate 10 and an antiviral coating film 12 provided on the surface of the substrate 10.
  • Fig. 3 shows a schematic cross-section of the antiviral coating film 12.
  • the antiviral coating film 12 has a plurality of plate-like inorganic particles 20 and a binder resin 30 for aggregating the plurality of plate-like inorganic particles 20, similar to the antiviral coating film 11 according to the first embodiment.
  • the antiviral coating film 12 further has a plurality of hydrophilic inorganic fine particles 40.
  • hydrophilic inorganic particles 40 are present on the surface of the antiviral coating film 12, and the remainder of the hydrophilic inorganic particles 40 are present inside the antiviral coating film 12.
  • the amount of the hydrophilic inorganic particles 40 is 25 volume % or more and 500 volume % or less with respect to the content of the binder resin 30.
  • the average primary particle diameter of the hydrophilic inorganic particles 40 is 100 nm or less.
  • the water contact angle of each of the hydrophilic inorganic particles 40 on the surface of the antiviral coating film 12 is less than 90 degrees.
  • the test virus liquid is inoculated onto the surface of the test specimen, and the test is performed with a resin film covering the surface to prevent the test virus liquid from drying out, and the change in virus concentration is evaluated.
  • the surface of the antiviral coating film is water repellent, the test virus liquid does not wet and spread sufficiently over the surface of the antiviral coating film, and therefore the test virus liquid does not adhere to the uneven structure of the surface of the antiviral coating film, and as a result, an appropriate antiviral evaluation may not be obtained.
  • a plurality of hydrophilic inorganic fine particles 40 are blended into the antiviral coating film 12.
  • the hydrophilic inorganic fine particles 40 used in the antiviral coating film 12 are not particularly limited, and those known in the art can be used.
  • hydrophilic inorganic fine particles 40 include silica fine particles, titania fine particles, alumina fine particles, etc. These can be used alone or in combination of two or more. Among these, silica fine particles are preferred because they have silanol groups on the surface and are highly hydrophilic.
  • silica fine particles are slightly soluble in water, even if contaminants are adsorbed on the surface of the silica fine particles, the surface layer gradually dissolves on contact with water, exposing a new surface on which no contaminants are adsorbed. Therefore, by using silica fine particles, it is possible to maintain hydrophilicity for a long period of time.
  • the average particle size of the hydrophilic inorganic particles 40 is not particularly limited, but is preferably 4 nm or more and 100 nm or less, more preferably 4 nm or more and 15 nm or less.
  • the "average primary particle size” means the average particle size measured by the light scattering method.
  • the average particle size of the hydrophilic inorganic particles 40 is less than 4 nm, it is difficult to maintain the hydrophilicity for a long period of time due to the elution of the hydrophilic inorganic particles, so this is not preferable.
  • the surface area equivalent to about 15% to 30% by mass per silica microparticle is dissolved in the coating composition, so that the silica microparticles also function as a binder when the coating composition is dried, and can also increase the strength of the antiviral coating film 12.
  • the content of the hydrophilic inorganic fine particles 40 in the antiviral coating film 12 is preferably 25% by volume or more and 500% by volume or less relative to the content of the binder resin 30. If the amount of the hydrophilic inorganic fine particles 40 is less than 25% by volume relative to the content of the binder resin 30, the effect of improving the hydrophilicity of the formed antiviral coating film 12 is poor, and there is a possibility that the hydrophilicity is not sufficiently secured.
  • the amount of the hydrophilic inorganic fine particles 40 is more than 500% by volume relative to the content of the binder resin 30, the volume of the hydrophilic inorganic fine particles 40 coated on the uneven surface structure formed by the plate-like inorganic particles 20 becomes large, the surface roughness of the uneven structure on the surface of the antiviral coating film 12 decreases, and the antiviral properties may decrease, which is not preferable.
  • Embodiment 3 Next, a method for producing an antiviral coating film according to an embodiment will be described.
  • a coating composition is first produced.
  • the coating composition used in producing the antiviral coating film 11 according to embodiment 1 is produced by mixing a binder resin 30, a plurality of plate-like inorganic particles 20, and water or a solvent as a diluent.
  • the binder resin 30 is a hydrophilic resin.
  • the produced coating composition is applied to the surface of the substrate 10, and then the applied coating composition and the substrate 10 are dried. This allows the antiviral coating film 11 according to embodiment 1 to be produced.
  • the plate-like inorganic particles 20 can be secondary particles formed by agglomeration of a plurality of plate-like inorganic fine particles. In this case, a structure in which the plate-like inorganic fine particles are stacked on top of each other can be easily formed.
  • the coating composition can contain multiple hydrophilic inorganic particles 40.
  • the coating composition can be manufactured by mixing multiple hydrophilic inorganic particles 40 dispersed in colloidal water with a coating composition composed of a binder resin 30, multiple plate-like inorganic particles 20, and water or a solvent as a diluent.
  • the hydrophilic inorganic particles 40 are water-dispersed hydrophilic inorganic particles such as colloidal silica.
  • the binder resin 30 is a hydrophilic resin.
  • this coating composition is applied to the surface of the substrate 10, and then the applied coating composition and the substrate 10 are dried. This allows the antiviral coating film 12 according to the second embodiment to be manufactured.
  • the hydrophilic inorganic microparticles 40 are not particularly limited, but from the viewpoint of ease of handling, it is preferable to use colloidal hydrophilic inorganic microparticles.
  • Colloidal hydrophilic inorganic microparticles are commercially available. Examples of colloidal hydrophilic inorganic microparticles that can be used include particles manufactured by Nissan Chemical Industries, Ltd. under the trade name "Snowtex S”, particles manufactured by Nissan Chemical Industries, Ltd. under the trade name "Snowtex OS”, particles manufactured by Nissan Chemical Industries, Ltd. under the trade name “Snowtex UP”, particles manufactured by Nissan Chemical Industries, Ltd. under the trade name "Snowtex ST-30", particles manufactured by Nissan Chemical Industries, Ltd.
  • a coating article having the antiviral coating film 11, 12 according to the first and second embodiments to an air conditioning device such as an indoor unit of an air conditioner or a total heat exchange type ventilator, it is possible to impart an antiviral effect to the air conditioning device.
  • Example 1 A binder resin with a solid content of 50% and a plate-like inorganic particle with a trade name of "SETAQUA 6302" and a trade name of "Tobermorite TJ" with an average primary particle diameter of 1 ⁇ m and an average thickness of 20 nm were used. 5.3 parts by mass of the binder resin and 2.8 parts by mass of the plate-like inorganic particle were added to 91.5 parts by mass of ion-exchanged water to obtain a coating composition. The obtained coating composition was applied to the surface of a substrate formed of polystyrene, and then the applied coating composition and the substrate were dried to prepare an evaluation member having a coating film. In the coating film obtained at this time, the amount of the plate-like inorganic particle relative to the binder resin was 969% by volume.
  • Example 2 A binder resin with a solid content of 50% and a plate-like inorganic particle with a trade name of "SETAQUA 6302" and a trade name of "Tobermorite TJ" with an average primary particle diameter of 1 ⁇ m and an average thickness of 20 nm were used. 7.7 parts by mass of the binder resin and 2.7 parts by mass of the plate-like inorganic particle were added to 89.6 parts by mass of ion-exchanged water to obtain a coating composition. The obtained coating composition was applied to the surface of a substrate formed of polystyrene, and then the applied coating composition and the substrate were dried to prepare an evaluation member having a coating film. In the coating film obtained at this time, the amount of the plate-like inorganic particle relative to the binder resin was 646% by volume.
  • Example 3 A binder resin with a solid content of 50% and a plate-like inorganic particle with a trade name of "SETAQUA 6302" and a trade name of "Tobermorite TJ" with an average primary particle diameter of 1 ⁇ m and an average thickness of 20 nm were used. 2.7 parts by mass of the binder resin and 2.8 parts by mass of the plate-like inorganic particle were added to 94.5 parts by mass of ion-exchanged water to obtain a coating composition. The obtained coating composition was applied to the surface of a substrate formed of polystyrene, and then the applied coating composition and the substrate were dried to prepare an evaluation member having a coating film. In the coating film obtained at this time, the amount of the plate-like inorganic particle relative to the binder resin was 1938% by volume.
  • Example 4 A binder resin with a solid content of 50% and a plate-like inorganic particle with a trade name of "SETAQUA 6302" and a trade name of "Tobermorite TJ" with an average primary particle diameter of 1 ⁇ m and an average thickness of 20 nm were used. 20.9 parts by mass of the binder resin and 2.3 parts by mass of the plate-like inorganic particle were added to 76.8 parts by mass of ion-exchanged water to obtain a coating composition. The obtained coating composition was applied to the surface of a substrate formed of polystyrene, and then the applied coating composition and the substrate were dried to prepare an evaluation member having a coating film. In the coating film obtained at this time, the amount of the plate-like inorganic particle relative to the binder resin was 204% by volume.
  • Example 5 A binder resin with a trade name of "SETAQUA 6302" and a solid content of 50% by mass, plate-like inorganic particles with a trade name of "Tobermorite TJ" and an average primary particle diameter of 1 ⁇ m and an average thickness of 20 nm, and hydrophilic inorganic fine particles with a trade name of "Snowtex ST-30” and a solid content of 30% by mass were used. 5.1 parts by mass of the binder resin, 2.7 parts by mass of the plate-like inorganic particles, and 2.6 parts by mass of the hydrophilic inorganic fine particles were added to 89.6 parts by mass of ion-exchanged water to obtain a coating composition.
  • the obtained coating composition was applied to the surface of a substrate formed of polystyrene, and then the applied coating composition and the substrate were dried to prepare an evaluation member having a coating film.
  • the amount of the plate-like inorganic particles relative to the binder resin was 969% by volume, and the amount of the hydrophilic inorganic fine particles relative to the binder resin was 57% by volume.
  • Example 6 A binder resin with a trade name of "SETAQUA 6302" and a solid content of 50% by mass, plate-like inorganic particles with a trade name of "Tobermorite TJ" and an average primary particle diameter of 1 ⁇ m and an average thickness of 20 nm, and hydrophilic inorganic fine particles with a trade name of "Snowtex ST-30” and a solid content of 30% by mass were used. 4.6 parts by mass of the binder resin, 2.4 parts by mass of the plate-like inorganic particles, and 11.6 parts by mass of the hydrophilic inorganic fine particles were added to 81.3 parts by mass of ion-exchanged water to obtain a coating composition.
  • the obtained coating composition was applied to the surface of a substrate formed of polystyrene, and then the applied coating composition and the substrate were dried to prepare an evaluation member having a coating film.
  • the amount of the plate-like inorganic particles relative to the binder resin was 969% by volume, and the amount of the hydrophilic inorganic fine particles relative to the binder resin was 286% by volume.
  • Example 7 A binder resin with a trade name of "SETAQUA 6302" and a solid content of 50% by mass, plate-like inorganic particles with a trade name of "Tobermorite TJ" and an average primary particle diameter of 1 ⁇ m and an average thickness of 20 nm, and hydrophilic inorganic fine particles with a trade name of "Snowtex ST-30” and a solid content of 30% by mass were used. 15.1 parts by mass of the binder resin, 2.4 parts by mass of the plate-like inorganic particles, and 10.5 parts by mass of the hydrophilic inorganic fine particles were added to 73.5 parts by mass of ion-exchanged water to obtain a coating composition.
  • the obtained coating composition was applied to the surface of a substrate formed of polystyrene, and then the applied coating composition and the substrate were dried to prepare an evaluation member having a coating film.
  • the amount of the plate-like inorganic particles relative to the binder resin was 294% by volume
  • the amount of the hydrophilic inorganic fine particles relative to the binder resin was 17% by volume.
  • Comparative Example 1 The substrate made of polystyrene used in the examples was designated as Comparative Example 1.
  • Comparative Example 2 5.0 parts by mass of a binder resin with a solid content of 50% and a trade name of "SETAQUA 6302" was added to 95.0 parts by mass of ion-exchanged water to obtain a coating composition. The obtained coating composition was applied to the surface of a substrate made of polystyrene, and then the applied coating composition and the substrate were dried to prepare an evaluation member having a coating film.
  • Comparative Example 3 5.0 parts by mass of plate-like inorganic particles with the product name "Tobermorite TJ" and an average primary particle diameter of 1 ⁇ m and an average thickness of 20 nm were added to 95.0 parts by mass of ethanol to obtain a coating composition.
  • the obtained coating composition was applied to the surface of a substrate formed of polystyrene, and then the applied coating composition and the substrate were dried to prepare an evaluation member having a coating film.
  • Comparative Example 4 A binder resin with a solid content of 50% and a plate-like inorganic particle with a product name of "SETAQUA 6302" and a product name of "Tobermorite TJ" having an average primary particle diameter of 1 ⁇ m and an average thickness of 20 nm were used. 2.6 parts by mass of the binder resin and 5.5 parts by mass of the plate-like inorganic particle were added to 91.9 parts by mass of ion-exchanged water to obtain a coating composition. The obtained coating composition was applied to the surface of a substrate formed of polystyrene, and then the applied coating composition and the substrate were dried to prepare an evaluation member having a coating film. In the coating film obtained at this time, the amount of the plate-like inorganic particle relative to the binder resin was 3905% by volume.
  • Comparative Example 5 A binder resin with a solid content of 50% and a plate-like inorganic particle with a trade name of "SETAQUA 6302" and a trade name of "Tobermorite TJ" with an average primary particle diameter of 1 ⁇ m and an average thickness of 20 nm were used. 5.1 parts by mass of the binder resin and 6.6 parts by mass of the plate-like inorganic particle were added to 88.4 parts by mass of ion-exchanged water to obtain a coating composition. The obtained coating composition was applied to the surface of a substrate formed of polystyrene, and then the applied coating composition and the substrate were dried to prepare an evaluation member having a coating film. In the coating film obtained at this time, the amount of the plate-like inorganic particle relative to the binder resin was 2389% by volume.
  • Comparative Example 6 A binder resin with a solid content of 50% and a plate-like inorganic particle with a trade name of "SETAQUA 6302" and a trade name of "Tobermorite TJ" with an average primary particle diameter of 1 ⁇ m and an average thickness of 20 nm were used. 25.0 parts by mass of the binder resin and 2.2 parts by mass of the plate-like inorganic particle were added to 72.8 parts by mass of ion-exchanged water to obtain a coating composition. The obtained coating composition was applied to the surface of a substrate formed of polystyrene, and then the applied coating composition and the substrate were dried to prepare an evaluation member having a coating film. In the coating film obtained at this time, the amount of the plate-like inorganic particle relative to the binder resin was 162% by volume.
  • Comparative Example 7 A binder resin with a trade name of "SETAQUA 6302" and a solid content of 50% by mass, plate-like inorganic particles with a trade name of "Tobermorite TJ" and an average primary particle diameter of 1 ⁇ m and an average thickness of 20 nm, and hydrophilic inorganic fine particles with a trade name of "Snowtex ST-30” and a solid content of 30% by mass were used.
  • 2.4 parts by mass of the binder resin, 2.5 parts by mass of the plate-like inorganic particles, and 11.9 parts by mass of the hydrophilic inorganic fine particles were added to 83.2 parts by mass of ion-exchanged water to obtain a coating composition.
  • the obtained coating composition was applied to the surface of a substrate formed of polystyrene, and then the applied coating composition and the substrate were dried to prepare an evaluation member having a coating film.
  • the amount of the plate-like inorganic particles relative to the binder resin was 1938% by volume
  • the amount of the hydrophilic inorganic fine particles relative to the binder resin was 571% by volume.
  • the virus inactivation rate was measured as follows.
  • Antiviral properties refers to the property of reducing the number of viruses attached to the surface of the coating material. Antiviral tests were performed as follows. In order to evaluate the antiviral properties of each evaluation member obtained in Examples 1 to 7 and Comparative Examples 1 to 7, ISO 21702, a method modified from JIS Z2801, was used. In the measurement results, for each evaluation member obtained in Examples 1 to 7 and Comparative Examples 1 to 7, the feline calicivirus concentration that has lost the ability to infect CRFK (Crandell-Rees Feline Kidney) cells is displayed as feline calicivirus inactivation based on Appendix B of JIS L1922. Here, the virus inactivation, which is the concentration of the virus inactivated against CRFK cells, was used as an index of the virus concentration, and the antiviral activity value was calculated based on this virus inactivation. The measurement results are shown in Table 1 below.
  • the procedure for calculating the antiviral activity value will be specifically described below.
  • the test pieces include both antiviral treated and untreated pieces.
  • R Ut - At R: Antiviral activity value Ut: Average common logarithm of viral infectivity of untreated products after standing for 24 hours At: Average common logarithm of viral infectivity of antiviral treated products after standing for 24 hours The unit of viral infectivity is PFU/ cm2 .
  • the antiviral activity was evaluated based on the following criteria. G: Antiviral activity value of 2.0 or more P: Antiviral activity value of less than 2.0
  • the initial water drop contact angle indicates the degree of affinity between the surface of a member and water, and the smaller the water contact angle, the higher the hydrophilicity of the member, and the larger the water contact angle, the lower the hydrophilicity. In general, when the water contact angle is 90 degrees or less, it is hydrophilic, and when the water contact angle is more than 90 degrees, it is hydrophobic.
  • a DM301 contact angle meter manufactured by Kyowa Interface Science was used to measure the static contact angle of a water droplet by dropping a 2 ⁇ L water droplet onto the coating film in the air at about 25° C.
  • the hydrophilicity was evaluated based on the following evaluation criteria. The measurement results are shown in Table 1 below.
  • E A contact angle with water, which is a criterion for hydrophilicity, is 30 degrees or less.
  • G A contact angle with water, which is a criterion for hydrophilicity, is greater than 30 degrees and less than 90 degrees.
  • P A contact angle with water, which is a criterion for hydrophobicity, is greater than 90 degrees. Note that, when the coating film peeled off due to contact with a water droplet during the water contact angle measurement, the water contact angle was not measured as the coating was not water resistant.
  • the coating film When the content of plate-like inorganic particles in the binder resin was more than 2000% by volume, the coating film had poor water resistance and antiviral evaluation was not possible.
  • the coating film When the content of plate-like inorganic particles relative to the binder resin is less than 200% by volume, the coating film is water resistant, but the unevenness on the surface of the coating film is flattened by the binder resin, resulting in a decrease in antiviral activity.
  • the binder resin contains hydrophilic inorganic fine particles with an average primary particle diameter of 100 nm or less in an amount of 25% by volume or more and 500% by volume or less relative to the binder resin content, and the water contact angle is less than 30 degrees, the antiviral activity value is further improved.
  • the antiviral coating films 11 and 12 are antiviral coating films formed on the surface of the substrate 10, and include a plurality of plate-like inorganic particles 20 and a binder resin 30 for agglomerating the plurality of plate-like inorganic particles 20.
  • the amount of the plurality of plate-like inorganic particles 20 is 200 volume % or more and 2000 volume % or less with respect to the content of the binder resin 30.
  • the thickness of the antiviral coating films 11 and 12 is 1 ⁇ m or more and 100 ⁇ m or less.
  • the average primary particle diameter of the plurality of plate-like inorganic particles 20 is 1 ⁇ m or more and 50 ⁇ m or less.
  • the average thickness of the plurality of plate-like inorganic particles 20 is 5 nm or more and 50 nm or less.
  • the antiviral coating films 11 and 12 contain the binder resin 30 and the plurality of plate-like inorganic particles 20 at the above-mentioned predetermined volume ratio, thereby forming a stable coating film.
  • the antiviral coating films 11 and 12 have plate-like inorganic particles with the above average primary particle size and thickness, and therefore exhibit antiviral properties.
  • the binder resin 30 is a hydrophilic resin.
  • the binder resin 30 is a hydrophilic resin, the hydrophilicity of the surfaces of the antiviral coating films 11, 12 is improved, and the affinity between the virus liquid and the surfaces during the antiviral test is improved, so that the antiviral coating films 11, 12 can exhibit higher antiviral properties.
  • the arithmetic mean roughness of the surface of the antiviral coating films 11 and 12 is 0.5 ⁇ m or more and 10 ⁇ m or less, and the average distance between adjacent convex portions on the surface is 20 nm or more and 1 ⁇ m or less.
  • the antiviral coating films 11 and 12 can improve the virus inactivation effect due to the uneven shape of the surface.
  • the antiviral coating film 12 further includes a plurality of hydrophilic inorganic fine particles 40, the amount of which is 25% by volume or more and 500% by volume or less relative to the content of the binder resin 30.
  • the average primary particle diameter of the plurality of hydrophilic inorganic fine particles 40 is 100 nm or less.
  • the water contact angle of the hydrophilic inorganic fine particles 40 located on the surface of the antiviral coating film 12 among the plurality of hydrophilic inorganic fine particles 40 is preferably less than 30 degrees. Since the antiviral coating film 12 includes the hydrophilic inorganic fine particles 40, the hydrophilicity of the surface of the antiviral coating film 12 is improved. When the water contact angle is less than 30 degrees, the affinity of the surface of the antiviral coating film 12 with water droplets is high, the affinity of the virus liquid with the surface is improved, and the antiviral coating film 12 can exhibit higher antiviral properties.
  • a method for producing an antiviral coating film includes a step of applying a coating composition containing a plurality of plate-like inorganic particles 20, a binder resin 30, a plurality of hydrophilic inorganic fine particles 40, and water to the surface of a substrate 10, and a step of drying the coating composition applied to the surface of the substrate 10.
  • Each of the plurality of plate-like inorganic particles 20 is a secondary particle formed by aggregation of a plurality of plate-like inorganic fine particles. Since the plate-like inorganic fine particles, which are secondary particles, are contained in the coating composition, unevenness derived from the secondary particles is easily formed on the surface of the antiviral coating film after the coating composition is applied and dried. When the coating composition contains secondary particles, unevenness is easily formed on the surface of the antiviral coating film compared to when the coating composition does not contain secondary particles.
  • the antiviral coating films 11 and 12 are provided on a coating article.
  • the antiviral coating films 11 and 12 are provided on the surface of a coating article.
  • a coating article provided with the antiviral coating films 11 and 12 can exhibit antiviral properties.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Plant Pathology (AREA)
  • Laminated Bodies (AREA)
  • Paints Or Removers (AREA)
PCT/JP2023/004489 2023-02-10 2023-02-10 抗ウイルス性コーティング膜、抗ウイルス性コーティング膜の製造方法及びコーティング物品 Ceased WO2024166341A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2024576032A JPWO2024166341A1 (https=) 2023-02-10 2023-02-10
PCT/JP2023/004489 WO2024166341A1 (ja) 2023-02-10 2023-02-10 抗ウイルス性コーティング膜、抗ウイルス性コーティング膜の製造方法及びコーティング物品

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2023/004489 WO2024166341A1 (ja) 2023-02-10 2023-02-10 抗ウイルス性コーティング膜、抗ウイルス性コーティング膜の製造方法及びコーティング物品

Publications (1)

Publication Number Publication Date
WO2024166341A1 true WO2024166341A1 (ja) 2024-08-15

Family

ID=92262241

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/004489 Ceased WO2024166341A1 (ja) 2023-02-10 2023-02-10 抗ウイルス性コーティング膜、抗ウイルス性コーティング膜の製造方法及びコーティング物品

Country Status (2)

Country Link
JP (1) JPWO2024166341A1 (https=)
WO (1) WO2024166341A1 (https=)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015205998A (ja) * 2014-04-22 2015-11-19 パナソニックＩｐマネジメント株式会社 抗ウイルス性塗膜
JP2017039811A (ja) * 2015-08-18 2017-02-23 有限会社Ｇｍｔコーポレーション 抗菌塗料
KR20210143101A (ko) * 2020-05-19 2021-11-26 (주)덕진 판상 산화아연 입자, 그 제조 방법 및 응용
WO2022202762A1 (ja) * 2021-03-24 2022-09-29 Dic株式会社 抗菌抗ウイルス剤、コーティング組成物、樹脂組成物、コーティング層及び成形体

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015205998A (ja) * 2014-04-22 2015-11-19 パナソニックＩｐマネジメント株式会社 抗ウイルス性塗膜
JP2017039811A (ja) * 2015-08-18 2017-02-23 有限会社Ｇｍｔコーポレーション 抗菌塗料
KR20210143101A (ko) * 2020-05-19 2021-11-26 (주)덕진 판상 산화아연 입자, 그 제조 방법 및 응용
WO2022202762A1 (ja) * 2021-03-24 2022-09-29 Dic株式会社 抗菌抗ウイルス剤、コーティング組成物、樹脂組成物、コーティング層及び成形体

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
RAHMAN HABIB, LI QIU, COLEMAN NICHOLA J.: "Waste Glass-Derived Tobermorite Carriers for Ag+ and Zn2+ Ions", JOURNAL OF COMPOSITES SCIENCE, vol. 6, no. 2, 9 February 2022 (2022-02-09), pages 52, XP093199493, ISSN: 2504-477X, DOI: 10.3390/jcs6020052 *

Also Published As

Publication number Publication date
JPWO2024166341A1 (https=) 2024-08-15

Similar Documents

Publication Publication Date Title
JP5940174B2 (ja) コーティング組成物、その製造方法及びコーティング物品
CN104411788B (zh) 排水性优异的含有铝的金属制热交换器的亲水性表面处理剂
JP4956467B2 (ja) 超疎水性のセルフクリーニング粉体ならびにその製造方法
JP6180698B1 (ja) 撥水性被膜及びそれが形成された製品
JP4689467B2 (ja) 機能性皮膜被覆物品、その製造方法及び機能性皮膜形成用塗工材料
KR940007204B1 (ko) 열교환기
JP5677144B2 (ja) 撥水性部材及びその製造方法、並びに空調機室外機
US9481802B2 (en) Coating composition, coating method, air conditioner, ventilation fan, and electrical equipment
JP6008786B2 (ja) 防汚性部材、熱交換器、空気調和機、並びにコーティング組成物及びその製造方法
EP2894201B1 (en) Anti-fouling coating, heat exchanger provided with same, and production method for same
JP2015209493A (ja) 撥水性部材及びその製造方法、空気調和機の室外機、並びに換気扇
CN105164221B (zh) 形成对附着污物的自清洁能力优异的皮膜的水系亲水性涂料组合物、以及形成有对附着污物的自清洁能力优异的皮膜的表面处理材料
JP2011163715A (ja) 熱交換器用アルミニウムフィン材
JPH10273617A (ja) 撥水性コーティング膜
WO2024166341A1 (ja) 抗ウイルス性コーティング膜、抗ウイルス性コーティング膜の製造方法及びコーティング物品
KR20180040330A (ko) 마이크로 채널 열교환기의 표면 처리 방법 및 이 방법으로 제작된 극소수성 표면을 가지는 마이크로 채널 열교환기
JPH04198287A (ja) 塗料組成物及び塗装フィン材並びにフィン材の製造方法
JP2019520970A (ja) コーティング方法
JP2011032548A (ja) アルミニウム部材の製造方法
JP2002176862A (ja) 防滴性農園芸用フィルム、その製造方法および防滴剤組成物
JP5654844B2 (ja) 熱交換器用耐アルカリ性アルミニウムフィン材及び熱交換器
JP5478330B2 (ja) 熱交換器用耐アルカリ性アルミニウムフィン材及び熱交換器
US20240309229A1 (en) Coating composition and article
JP2001329377A (ja) 熱交換器フィン材用親水化処理組成物
WO2026014101A1 (ja) 親水性コーティング膜及び親水性コーティング液並びに親水性コーティング膜形成方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23921171

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2024576032

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 23921171

Country of ref document: EP

Kind code of ref document: A1