WO2022176742A1 - 抗菌剤、抗菌製品、及び抗菌性塗料 - Google Patents
抗菌剤、抗菌製品、及び抗菌性塗料 Download PDFInfo
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- WO2022176742A1 WO2022176742A1 PCT/JP2022/005167 JP2022005167W WO2022176742A1 WO 2022176742 A1 WO2022176742 A1 WO 2022176742A1 JP 2022005167 W JP2022005167 W JP 2022005167W WO 2022176742 A1 WO2022176742 A1 WO 2022176742A1
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- WO
- WIPO (PCT)
- Prior art keywords
- antibacterial
- antimicrobial
- less
- antibacterial agent
- agent
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
- A01N25/10—Macromolecular compounds
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P1/00—Disinfectants; Antimicrobial compounds or mixtures thereof
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- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
- C09D175/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
-
- 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
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/221—Oxides; Hydroxides of metals of rare earth metal
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
Definitions
- the present invention relates to an antibacterial agent, an antibacterial product having an antibacterial layer containing the antibacterial agent, and an antibacterial paint containing the antibacterial agent.
- Phenolic, organotin, triazine, sulfonylpyridine halide, captan, organocopper, chloronaphthalene, chlorophenylpyritazine, and other compounds are known as agents that exhibit antibacterial effects (patent Reference 1).
- Patent Document 2 discloses a dispersion having deodorant, antibacterial, and antifungal properties, in which a carboxylate metal salt formed from a carboxyl group-containing polymer and a metal compound is dispersed.
- an anti-algae main component is orthoferrite containing a rare earth element selected from lanthanum (La), praseodymium (Pr), neodymium (Nd), and yttrium (Y), iron, and oxygen.
- a rare earth element selected from lanthanum (La), praseodymium (Pr), neodymium (Nd), and yttrium (Y), iron, and oxygen.
- the present invention has been made in view of the above background, an antibacterial agent with low environmental pollution and excellent safety, an antibacterial product having an antibacterial layer containing the antibacterial agent, and an antibacterial agent containing the antibacterial agent
- the purpose is to provide a durable paint.
- the present inventors have made intensive studies to solve the above problems. Then, the inventors have found that a rare earth ferrite having a specific composition can be an antibacterial agent with low environmental pollution and excellent safety, and have completed the present invention. That is, the present invention is as follows.
- Ln2xFe2 (1-x) O3 1 (In formula (1), Ln is a rare earth element selected from the group consisting of lanthanum, praseodymium, neodymium, and yttrium, and x is a number of 0.45 or more and less than 1.00.).
- antibacterial product selected from the group consisting of interior walls, building materials, joint materials, sealants, furniture, air filters, insoles, clothing, sanitary products, medical materials or equipment, bath mats, towels, and bedding.
- antibacterial product ⁇ Aspect 7>> An antimicrobial paint comprising the antimicrobial agent according to any one of aspects 1-3.
- an antibacterial agent with low environmental pollution and excellent safety is provided.
- the antibacterial agent of the present invention exerts an antibacterial effect on its surroundings as well.
- the antibacterial effect can be spread even to parts that are not in direct contact with the antibacterial agent of the present invention. Therefore, when producing an antibacterial product using the antibacterial agent of the present invention, the antibacterial effect can be exhibited without the presence of the antibacterial agent in the entire product.
- the antibacterial agent of the present invention has excellent dispersibility in water, organic solvents, and the like. Therefore, it is possible to prepare dispersion liquids, paints, and the like by dispersing them in various media. Therefore, by applying the paint or the like containing the antibacterial agent of the present invention to an article or the like that serves as a substrate to form a layer containing the antibacterial agent, materials that could not be applied with the antibacterial agent so far, or have complicated shapes It becomes possible to impart an antibacterial effect to a place or the like.
- the antibacterial agent of the present invention is a rare earth ferrite compound having a specific composition and is represented by the following formula (1): Ln2xFe2 (1-x) O3 ( 1) (In formula (1), Ln is a rare earth element selected from the group consisting of lanthanum, praseodymium, neodymium, and yttrium, and x is a number of 0.45 or more and less than 1.00.).
- the present inventors have studied in detail the composition of rare earth ferrite and its antibacterial effect. As a result, it was found that a high antibacterial effect can be obtained by setting the rare earth (Ln):Fe ratio in the rare earth ferrite within the above range.
- the antibacterial agent of the present invention may be in any form as long as x in the above formula (1) is a number of 0.45 or more and less than 1.00.
- a solid solution having a uniform composition as a whole may be formed, or a mixture of LnFeO 3 phase and Ln 2 O 3 phase may be formed, or a uniform composition solid solution, LnFeO 3 phase, and Ln 2 O may be formed. It may be a mixture with three phases. Also, phases other than these may be included.
- x in formula (1) may be 0.50 or more, 0.55 or more, 0.60 or more, 0.65 or more, 0.70 or more, or 0.75 or more, 0.90 or less, It may be 0.85 or less, 0.80 or less, 0.75 or less, 0.70 or less, 0.65 or less, or 0.60 or less.
- x in the above formula (1) may typically be, for example, a number of 0.50 or more and 0.90 or less, further may be 0.65 or more and 0.85 or less, especially , a number between 0.70 and 0.80.
- the rare earth (Ln) in formula (1) may be lanthanum in particular from the viewpoint of antibacterial properties and cost, and therefore the antibacterial agent of the present invention may be lanthanum ferrite.
- the method for producing the antibacterial agent of the present invention is not particularly limited, but for example, a mixture containing a rare earth source and an iron source in a predetermined ratio is pulverized and mixed by applying an appropriate stress, and then fired. may be manufactured by The stress applied here may be, for example, friction force, shear force, shear stress, impact force, or the like. Examples of methods for applying such stress to the mixture of the rare earth source and the iron source include wet pulverization in a ball mill.
- a desired rare earth element oxide may be used, as well as bastnaesite, monazite, xenotime, etc. may be used.
- lanthanum is preferably used from the viewpoint of the excellent antifungal property of the obtained rare earth ferrite and the cost.
- La 2 O 3 is used as the lanthanum source, it is possible to produce lanthanum ferrite which is highly effective and relatively inexpensive.
- Iron sources include oxides such as FeO , Fe3O4 and Fe2O3 ; oxyoxides such as FeOOH, ferrihydrite and Eisenmannrite; water such as Fe(OH) 2 and Fe(OH) 3 . oxide; and the like may be used.
- FeOOH is used as the iron source , it is more reactive than Fe 2 O 3 and the like, so it is possible to sinter at a low temperature.
- An antimicrobial agent with a relatively small particle size can be produced.
- the liquid medium for example, water, alcohol, or the like may be used as the liquid medium.
- the liquid medium may be removed by an appropriate method such as drying by heating, and then firing may be performed.
- the firing temperature is not particularly limited and can be set as appropriate. For example, 700 ° C. or higher, 800 ° C. or higher, 900 ° C. or higher, or 1,000 ° C. or higher, and for example, 1,300 ° C. or lower, 1,200 ° C. or lower, 1,100 ° C. or lower, or 1,000 ° C. °C and below.
- the baking time is also not particularly limited, and can be set as appropriate. For example, 1 hour or more, 2 hours or more, 3 hours or more, 4 hours or more, 6 hours or more, 8 hours or more, 12 hours or more, or 15 hours or more, and 72 hours or less, 48 hours or less, or 36 hours It may be carried out for 24 hours or less, 18 hours or less, or 15 hours or less.
- the surrounding atmosphere during firing may be an oxidizing atmosphere, for example, firing may be performed in the air.
- the antibacterial agent of the present invention can be obtained by pulverizing, classifying, etc. by an appropriate method, if necessary.
- the form of use of the antibacterial agent of the present invention is not particularly limited, but for example, it can be used in the form of powder, impregnation, or coating.
- the antibacterial agent When the antibacterial agent is used in the form of powder, it is preferable to use 1 g or more of the antibacterial agent in order to fully develop the antibacterial effect.
- 0.06g of paper is preferably impregnated with 0.01 to 0.5g of the antibacterial agent.
- the antibacterial agent is used in the form of a coating film and is used as a paint containing the antibacterial agent, for example, it is preferable to contain the antibacterial agent in an amount of 30% by mass or more based on the total solid content of the paint.
- Antibacterial products Another aspect of the invention is an antimicrobial product comprising an antimicrobial layer comprising the antimicrobial agent of the invention. Specifically, it is an antimicrobial product comprising a substrate and an antimicrobial layer, wherein the antimicrobial layer is the layer containing the antimicrobial agent of the present invention.
- the substrate in the antimicrobial product of the present invention can be any article to which antimicrobial properties are to be imparted. It can be any article made of any material, having any shape, and any article for which antimicrobial properties are desired.
- the antibacterial layer in the antibacterial product of the present invention is not particularly limited as long as it contains the antibacterial agent of the present invention.
- it may be a layer prepared by blending the powder of the antibacterial agent of the present invention with a resin or the like and extrusion coating or the like, or it may be a cured product of the antibacterial paint of the present invention, which will be described later.
- the antibacterial layer may contain any component other than the antibacterial agent of the present invention.
- optional components include, but are not limited to, resins, binders, additives for exhibiting functions other than antibacterial properties, and the like.
- the resin optionally contained in the antibacterial layer of the antibacterial product of the present invention is not particularly limited. It may be a saturated polyester resin, a fluorine resin, or the like.
- the thickness of the antibacterial layer is not particularly limited, and may be, for example, about 1 ⁇ m or more and 1 mm or less.
- the coating amount is, for example, 5 g/m 2 or more, 10 g/m 2 or more, 15 g/m 2 or more, as a dry mass after removing the solvent per unit area. 2 or more, 20 g/m 2 or more, or 25 g/m 2 or more, for example, 200 g/m 2 or less, 150 g/m 2 or less, 120 g/m 2 or less, 100 g/m 2 or less, 80 g/m 2 or less. or less, or 70 g/m 2 or less.
- the antibacterial product of the present invention may contain a substrate and an antibacterial layer as essential constituents, and may contain other constituents.
- Other configurations include, for example, other layers, which may be outside the substrate, between the substrate and the antimicrobial layer, or outside the antimicrobial layer.
- Adhesion can be improved by forming an antibacterial layer on the primer layer.
- the degree of freedom in color design of the antibacterial product may be increased. It may be provided with performance other than antibacterial performance.
- the antibacterial product of the present invention is not particularly limited, but for example, interior walls, building materials, joint materials, sealing materials, furniture, air filters, insoles, clothing, sanitary products, medical materials or instruments, bath mats, towels , bedding, etc.
- Antibacterial paint ⁇ Another aspect of the invention is an antimicrobial paint containing the antimicrobial agent of the invention.
- the antibacterial paint may contain other ingredients such as resins and solvents in addition to the antibacterial agent of the present invention.
- the resin optionally contained in the antibacterial paint of the present invention is not particularly limited. Resin, fluorine resin, or the like may be used.
- the solvent contained in the antibacterial paint of the present invention is not particularly limited, and may be selected from, for example, water, alcohols, ketones, aliphatic hydrocarbons, aromatic hydrocarbons, esters, and the like.
- the content of the antibacterial agent in the antibacterial paint of the present invention is, for example, 1% by mass or more, preferably 2%, as the ratio of the antibacterial agent to the total of the resin and the antibacterial agent in the paint.
- % by mass or more more preferably 5% by mass or more, more preferably 10% by mass or more, particularly preferably 20% by mass or more, particularly preferably 30% by mass or more, and from the viewpoint of obtaining good coatability,
- 80% by mass or less preferably 70% by mass or less, more preferably 60% by mass or less, even more preferably 50% by mass or less, particularly preferably 40% by mass or less, particularly preferably 30% by mass or less, or 20% by mass or less
- the method for producing the antibacterial paint of the present invention is not particularly limited.
- it may be prepared by mixing a commercially available synthetic resin paint and the antibacterial agent of the present invention in a predetermined ratio.
- the antibacterial paint of the present invention can be used to form the antibacterial layer in the antibacterial product of the present invention described above.
- it may be used as a joint material (a filler for gaps in tiles, concrete, bricks, etc.), a sealing material, a caulking material, an adhesive, and the like.
- the prepared evaluation paint was applied to a PET film to a thickness of about 70 ⁇ m, and dried at room temperature for one day to prepare a coating film.
- Antibacterial activities against Escherichia coli and Staphylococcus aureus were measured according to JIS Z 2801 for the obtained coating films.
- Example 1 A coating film was formed in the same manner as in Example 1 using only the two-liquid solvent-based acrylic urethane resin without mixing lanthanum ferrite.
- the antibacterial activity value of the obtained coating film was measured in the same manner as in Example 1, and the antibacterial effect was evaluated. Table 1 shows the measurement results and determination results.
- Lanthanum ferrite obtained in the same manner as in Example 1 was added to a water-based acrylic urethane emulsion (Boncoat (registered trademark) HY-364, manufactured by DIC Corporation) so that the concentration relative to the total solid content was the concentration shown in Table 1. was mixed to prepare a paint for evaluation.
- the prepared evaluation paint was applied to a PET film to a thickness of about 70 ⁇ m, and dried at room temperature for one day to prepare a coating film.
- Antibacterial activities against Escherichia coli, Staphylococcus aureus, Salmonella, and Legionella were measured according to JIS Z 2801 for the obtained coating film.
- ⁇ Reference example 1>> The viable counts of Escherichia coli and Staphylococcus aureus were measured according to JIS Z 2801 without forming a coating film on the PET film. The measurement results are shown in the lower part of Table 1.
- A-801-P Two-component solvent-based acrylic urethane resin (main agent: Acrydic (registered trademark) A-801-P manufactured by DIC Corporation, curing agent: Barnock (registered trademark) DN-980 manufactured by DIC Corporation)
- HY-364 water-based acrylic urethane emulsion (manufactured by DIC Corporation, Boncoat (registered trademark) HY-364)
- Lanthanum ferrite obtained in the same manner as in Example 1 was added to a water-based acrylic urethane emulsion (Boncoat (registered trademark) HY-364, manufactured by DIC Corporation) so that the concentration relative to the total solid content was the concentration shown in Table 2. was mixed to prepare a paint for evaluation.
- the prepared evaluation paint was applied to a PET film to a thickness of about 70 ⁇ m, and dried at room temperature for one day to prepare a coating film.
- Antibacterial activity values against Escherichia coli, Staphylococcus aureus, O-157, and MRSA (methicillin-resistant Staphylococcus aureus) were measured according to JIS Z 2801 for the obtained coating film.
- the number of viable bacteria in Reference Example 2 shown in the lower part of Table 2 is about 10 9 (1 billion) to 10 10 (10 billion) times the number of viable bacteria in Reference Example 1 shown in the lower part of Table 1. many. Therefore, the test of Example 6 is an extremely severe test compared to the tests of Examples 1 to 5 and Comparative Example 1.
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Abstract
Description
下記式(1)で表される、抗菌剤:
Ln2xFe2(1-x)O3 (1)
(式(1)中、Lnは、ランタン、プラセオジム、ネオジム、及びイットリウムからなる群より選択される希土類元素であり、xは、0.45以上1.00未満の数である。)。
《態様2》
前記式(1)中のxは、0.65以上0.85以下の数である、態様1に記載の抗菌剤。
《態様3》
前記式(1)中のLnが、ランタンである、態様1又は2に記載の抗菌剤。
《態様4》
基体、及び抗菌層を含む、抗菌製品であって、
前記抗菌層は、態様1~3のいずれか一態様に記載の抗菌剤を含む層である、
抗菌製品。
《態様5》
前記抗菌層は、樹脂を更に含む、態様4に記載の抗菌製品。
《態様6》
内壁、建材、目地材、シーリング材、家具、エアフィルター、インソール、衣料品、衛生用品、医療用資材又は器具、バスマット、タオル、及び寝具からなる群より選択される、態様4又は5に記載の抗菌製品。
《態様7》
態様1~3のいずれか一態様に記載の抗菌剤を含む、抗菌性塗料。
《態様8》
樹脂、及び溶剤を更に含む、態様7に記載の抗菌性塗料。
本発明の抗菌剤は、特定の組成を有する希土類フェライト化合物であり、下記式(1)で表される:
Ln2xFe2(1-x)O3 (1)
(式(1)中、Lnは、ランタン、プラセオジム、ネオジム、及びイットリウムからなる群より選択される希土類元素であり、xは、0.45以上1.00未満の数である。)。
本発明の抗菌剤の製造方法は、特に限定されるものではないが、例えば、希土類源と鉄源とを所定の割合で含有する混合物に、適当な応力を印加して粉砕混合した後、焼成することにより、製造されてよい。ここで印加される応力としては、例えば、摩擦力、せん断力、ずり応力、衝撃力等であってよい。希土類源と鉄源との混合物に、このような応力を印加する方法としては、例えば、ボールミル中で湿式粉砕する方法等が挙げられる。
本発明の抗菌剤の使用形態は、特に限定されるものではないが、例えば、粉末状態、含侵状態、塗膜状態にて使用することが可能である。
また別の本発明は、本発明の抗菌剤を含む抗菌層を備える抗菌製品である。具体的には、基体、及び抗菌層を含み、抗菌層は、本発明の抗菌剤を含む層である、抗菌製品である。
本発明の抗菌製品における基体は、抗菌性を付与すべきあらゆる物品であってよい。あらゆる材料からなる、あらゆる形状を有する物品であって、抗菌性が求められるあらゆる物品であってよい。
本発明の抗菌製品における抗菌層は、本発明の抗菌剤を含む層であれば、特に限定されるものではない。例えば、本発明の抗菌剤の粉末を樹脂等にブレンドして、押出コーティング等により作製した層であってもよいし、後記する本発明の抗菌性塗料の硬化物であってよい。
本発明の抗菌製品は、基体、及び抗菌層を必須の構成として含んでいればよく、その他の構成を含んでいてもよい。その他の構成としては、例えば、その他の層が挙げられ、その他の層は、基体の外側、基体と抗菌層の間、抗菌層の外側のいずれであってもよい。
本発明の抗菌製品は、特に限定されるものではないが、例えば、内壁、建材、目地材、シーリング材、家具、エアフィルター、インソール、衣料品、衛生用品、医療用資材又は器具、バスマット、タオル、寝具等であってよい。
また別の本発明は、本発明の抗菌剤を含む抗菌性塗料である。抗菌性塗料は、本発明の抗菌剤の他に、樹脂及び溶剤等の他の成分を含んでいてもよい。
本発明の抗菌性塗料に任意に含まれる樹脂は、特に限定されるものではなく、例えば、アクリル樹脂、アクリルシリコン樹脂、シリコン樹脂、アミノアルキド樹脂、エポキシ樹脂、フェノール樹脂、ポリウレタン樹脂、不飽和ポリエステル樹脂、フッ素樹脂等であってよい。
本発明の抗菌性塗料に含まれる溶剤は、特に限定されるものではなく、例えば、水、アルコール、ケトン、脂肪族炭化水素、芳香族炭化水素、エステル等から選択されてもよい。
本発明の抗菌性塗料における抗菌剤の含有量は、高い抗菌性能を発現する観点から、該塗料中の樹脂と抗菌剤との合計に対する抗菌剤の割合として、例えば1質量%以上、好ましくは2質量%以上、より好ましくは5質量%以上、更に好ましくは10質量%以上、特に好ましくは20質量%以上、とりわけ好ましくは30質量%以上であってもよく、良好な塗布性を得る観点から、例えば80質量%以下、好ましくは70質量%以下、より好ましくは60質量%以下、更に好ましくは50質量%以下、特に好ましくは40質量%以下、とりわけ好ましくは30質量%以下、又は20質量%以下であってもよい。
本発明の抗菌性塗料の製造方法は、特に限定されるものではない。例えば、市販の合成樹脂塗料と、本発明の抗菌剤とを、所定の割合で混合することにより、調製されてよい。
本発明の抗菌性塗料は、上記した本発明の抗菌製品における抗菌層の形成に用いることができる。また、例えば、目地材(タイル、コンリート、煉瓦等の隙間の充填材)、シーリング材、コーキング材、接着剤等として用いてもよい。
<ランタンフェライトの合成>
粉砕メディアとして10mmΦのアルミナ球を使用するボールミル中に、0.4モル部のLa2O3、0.2モル部のFeOOH、及び水を仕込み、5時間粉砕混合した。得られた粉砕物を、300℃にて15時間乾燥した後、回転式粉砕機で解砕した。得られた解砕物を、1,000℃にて15時間焼成した後、ハンマーミルで粉砕することにより、ランタンフェライトを得た。
実施例1及び2、La:Fe=80:20(モル比)、式La1.6Fe0.4O3
実施例3、La:Fe=50:50(モル比)、式La1.0Fe1.0O3
(抗菌活性値の測定)
得られたランタンフェライトを、全固形分に対する濃度が表1に記載の濃度となるように、二液溶剤系アクリルウレタン樹脂(主剤:DIC株式会社製、アクリディック(登録商標)A-801-P、硬化剤:DIC株式会社製、バーノック(登録商標)DN-980)に混合し、評価用塗料を作製した。
上記で得られた抗菌活性値に基づき、以下の評価基準にて、抗菌効果の判定を実施した。判定結果を表1に示す。
AA:大腸菌及び黄色ブドウ球菌の抗菌活性値の何れもが2.0以上
A:大腸菌及び黄色ブドウ球菌の抗菌活性値の何れもが1.0以上2.0未満
B:大腸菌及び黄色ブドウ球菌の抗菌活性値の何れかが1.0以上2.0未満
C:大腸菌及び黄色ブドウ球菌の抗菌活性値の何れもが1.0未満
ランタンフェライトを混合せず、二液溶剤系アクリルウレタン樹脂のみを用いて、実施例1と同様にして塗膜を形成した。得られた塗膜について、実施例1と同様にして抗菌活性値を測定し、抗菌効果の判定を実施した。測定結果及び判定結果を、表1に示す。
(抗菌活性値の測定)
実施例1と同様にして得られたランタンフェライトを、全固形分に対する濃度が表1に記載の濃度となるように、水系アクリルウレタンエマルジョン(DIC株式会社製、ボンコート(登録商標)HY-364)に混合し、評価用塗料を作製した。
上記で得られた抗菌活性値に基づき、以下の評価基準にて、抗菌効果の判定を実施した。判定結果を表2に示す。
AA:全菌種についての抗菌活性値が2.0以上
A:全菌種についての抗菌活性値が1.0以上2.0未満
B:全菌種についての抗菌活性値が1.0以上2.0未満
C:全菌種についての抗菌活性値が1.0未満
(抗菌活性値の測定)
実施例3と同様にして得られたランタンフェライトを用いた他は、実施例5と同様にして、抗菌効果の判定を実施した。判定結果を表2に示す。
PETフィルム上に塗膜を形成せずに、無加工のまま、JIS Z 2801に従い、Escherichia coli(大腸菌)及びStaphylococcus aureus(黄色ブドウ球菌)の生菌数をそれぞれ測定した。測定結果を、表1の下段に示す。
A-801-P:二液溶剤系アクリルウレタン樹脂(主剤:DIC株式会社製、アクリディック(登録商標)A-801-P、硬化剤:DIC株式会社製、バーノック(登録商標)DN-980)
HY-364:水系アクリルウレタンエマルジョン(DIC株式会社製、ボンコート(登録商標)HY-364)
(抗菌活性値の測定)
実施例1と同様にして得られたランタンフェライトを、全固形分に対する濃度が表2に記載の濃度となるように、水系アクリルウレタンエマルジョン(DIC株式会社製、ボンコート(登録商標)HY-364)に混合し、評価用塗料を作製した。
上記で得られた抗菌活性値に基づき、以下の評価基準にて、抗菌効果の判定を実施した。判定結果を表2に示す。
AA:全菌種についての抗菌活性値が2.0以上
A:全菌種についての抗菌活性値が1.0以上2.0未満
B:全菌種についての抗菌活性値が1.0以上2.0未満
C:全菌種についての抗菌活性値が1.0未満
PETフィルム上に塗膜を形成せずに、無加工のまま、JIS Z 2801に従い、Escherichia coli(大腸菌)、Staphylococcus aureus(黄色ブドウ球菌)、O-157、及びMRSA(メチシリン耐性黄色ブドウ球菌)の生菌数をそれぞれ測定した。測定結果を、表2の下段に示す。
Claims (8)
- 下記式(1)で表される、抗菌剤:
Ln2xFe2(1-x)O3 (1)
(式(1)中、Lnは、ランタン、プラセオジム、ネオジム、及びイットリウムからなる群より選択される希土類元素であり、xは、0.45以上1.00未満の数である。)。 - 前記式(1)中のxは、0.65以上0.85以下の数である、請求項1に記載の抗菌剤。
- 前記式(1)中のLnが、ランタンである、請求項1又は2に記載の抗菌剤。
- 基体、及び抗菌層を含む、抗菌製品であって、
前記抗菌層は、請求項1~3のいずれか一項に記載の抗菌剤を含む層である、
抗菌製品。 - 前記抗菌層は、樹脂を更に含む、請求項4に記載の抗菌製品。
- 内壁、建材、目地材、シーリング材、家具、エアフィルター、インソール、衣料品、衛生用品、医療用資材又は器具、バスマット、タオル、及び寝具からなる群より選択される、請求項4又は5に記載の抗菌製品。
- 請求項1~3のいずれか一項に記載の抗菌剤を含む、抗菌性塗料。
- 樹脂、及び溶剤を更に含む、請求項7に記載の抗菌性塗料。
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| US18/277,276 US20240122185A1 (en) | 2021-02-18 | 2022-02-09 | Antimicrobial agent, antimicrobial product, and antimicrobial coating |
| JP2023500779A JP7580563B2 (ja) | 2021-02-18 | 2022-02-09 | 抗菌剤、抗菌製品、及び抗菌性塗料 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2022126421A (ja) * | 2021-02-18 | 2022-08-30 | 共同印刷株式会社 | 希土類フェライトの製造方法、及び希土類フェライト |
| JP2022186836A (ja) * | 2020-10-02 | 2022-12-15 | 株式会社アサカ理研 | 高純度リチウム塩水溶液の製造方法 |
| JP2023046091A (ja) * | 2021-09-22 | 2023-04-03 | 共同印刷株式会社 | 希土類フェライト分散樹脂液、製品、及び塗料 |
| WO2023090291A1 (ja) * | 2021-11-16 | 2023-05-25 | 共同印刷株式会社 | 抗ウイルス剤、抗ウイルス製品、及び抗ウイルス性処理液 |
| WO2024038868A1 (ja) * | 2022-08-17 | 2024-02-22 | 共同印刷株式会社 | 繊維及び生地 |
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| JP7591941B2 (ja) * | 2021-02-18 | 2024-11-29 | 共同印刷株式会社 | 防カビ剤、防カビ製品、及び防カビ性塗料 |
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| JP2022186836A (ja) * | 2020-10-02 | 2022-12-15 | 株式会社アサカ理研 | 高純度リチウム塩水溶液の製造方法 |
| JP2022126421A (ja) * | 2021-02-18 | 2022-08-30 | 共同印刷株式会社 | 希土類フェライトの製造方法、及び希土類フェライト |
| JP7641757B2 (ja) | 2021-02-18 | 2025-03-07 | 共同印刷株式会社 | 希土類フェライトの製造方法、及び希土類フェライト |
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| JP7699508B2 (ja) | 2021-09-22 | 2025-06-27 | 共同印刷株式会社 | 希土類フェライト分散樹脂液、製品、及び塗料 |
| WO2023090291A1 (ja) * | 2021-11-16 | 2023-05-25 | 共同印刷株式会社 | 抗ウイルス剤、抗ウイルス製品、及び抗ウイルス性処理液 |
| WO2024038868A1 (ja) * | 2022-08-17 | 2024-02-22 | 共同印刷株式会社 | 繊維及び生地 |
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| CN116916754A (zh) | 2023-10-20 |
| KR20230132557A (ko) | 2023-09-15 |
| US20240122185A1 (en) | 2024-04-18 |
| EP4298909A1 (en) | 2024-01-03 |
| TW202301984A (zh) | 2023-01-16 |
| JPWO2022176742A1 (ja) | 2022-08-25 |
| EP4298909A4 (en) | 2024-12-18 |
| JP7580563B2 (ja) | 2024-11-11 |
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