EP4196183A1 - Selbstdesinfizierendes antivirales filtermaterial, dessen herstellung und anwendung, sowie luftfiltereinrichtung mit dem filtermaterial - Google Patents
Selbstdesinfizierendes antivirales filtermaterial, dessen herstellung und anwendung, sowie luftfiltereinrichtung mit dem filtermaterialInfo
- Publication number
- EP4196183A1 EP4196183A1 EP21762629.0A EP21762629A EP4196183A1 EP 4196183 A1 EP4196183 A1 EP 4196183A1 EP 21762629 A EP21762629 A EP 21762629A EP 4196183 A1 EP4196183 A1 EP 4196183A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter material
- air
- filter
- color pigment
- carrier
- 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.)
- Pending
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/18—Radiation
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1192—Protective face masks, e.g. for surgical use, or for use in foul atmospheres with antimicrobial agent
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
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- A61L2/084—Visible light
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- A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
- A61L2/16—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using chemical substances
- A61L2/23—Solid materials, e.g. granules, powders, blocks or tablets
- A61L2/232—Solid materials, e.g. granules, powders, blocks or tablets layered or coated
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
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- A62B23/025—Filters for breathing-protection purposes for respirators the filter having substantially the shape of a mask
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- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0028—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions provided with antibacterial or antifungal means
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- B01D53/007—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by irradiation
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
- F24F8/167—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using catalytic reactions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
- F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
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- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2101/00—Chemical composition of materials used in disinfecting, sterilising or deodorising
- A61L2101/02—Inorganic materials
- A61L2101/24—Inorganic materials containing aluminium
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61L2101/00—Chemical composition of materials used in disinfecting, sterilising or deodorising
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- A61L2101/26—Inorganic materials containing copper
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2101/00—Chemical composition of materials used in disinfecting, sterilising or deodorising
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- A61L2101/00—Chemical composition of materials used in disinfecting, sterilising or deodorising
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- A61L2101/00—Chemical composition of materials used in disinfecting, sterilising or deodorising
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- A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
- A61L2209/10—Apparatus features
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Definitions
- the invention relates to a self-disinfecting antiviral filter material and an air filter device containing this filter material.
- the invention relates in particular to a filter material for respirators or air cleaning devices, such as. B. in air conditioning systems.
- the invention also relates to a method for producing the filter material and a method for inactivating viruses.
- air filter devices should also have an antiviral and self-disinfecting effect if possible.
- wearing flexible breathing masks or filters is particularly useful or even necessary.
- conventional filter materials known from practice have no or only a weak antiviral effect.
- An advantageous biocide-free method for achieving an antiviral effect consists in the use of dyes that sensitize the formation of reactive, germicidal singlet oxygen through visible light and atmospheric oxygen (in its natural ground state as triplet oxygen), which is already known in used in medicine as so-called photodynamic therapy (PDT) to fight cancer.
- PDT photodynamic therapy
- Phthalocyanines are of particular interest as suitable sensitizer dyes for use in filter materials because of their broad absorption in the visible spectral range, their high light stability and their high quantum yields of singlet oxygen generation (see, for example, WO 2015/154543 A1).
- the use of phthalocyanines to finish filter materials has hitherto resulted in the following problems.
- unsubstituted phthalocyanines are pigments that are insoluble in common solvents, making it impossible to coat the substrate from solution.
- solubilizing cationic ammonium groups in phthalocyanines as described in WO 2015/154543 A1 for the production of three-dimensional mask filters, has the disadvantage, in addition to the extremely complex synthesis, of the water-soluble dyes slowly diffusing out ("bleeding out") in the presence of moist (breath -) Air
- bleeding out water-soluble dyes slowly diffusing out
- moist (breath -) Air The same also applies to the use of phthalocyanines which contain solubilizing anionic sulfonic acid or carboxylic acid groups, as described in WO 2017/196961 A1.
- metal phthalocyanines into polymers (see WO 2012/064894 A1) in principle allows coating without outdiffusion, but with a very low singlet oxygen formation efficiency, since only the dye molecules on the polymer surface can react with atmospheric oxygen.
- the object of the present invention is to provide an improved filter material with an antiviral effect, with which the disadvantages of conventional filter materials are avoided.
- the antiviral filter material should be easy to produce by applying the antiviral component to different carriers, have high mechanical stability and light stability, even over long periods of time, and be self-sterilizing with high efficiency under room conditions (atmospheric oxygen, daylight or room light). , and/or for use in air filter devices, in particular personal masks or systems for cleaning indoor air.
- the stated object is achieved by a self-disinfecting antiviral filter material which has an air-permeable carrier and a composite coating connected to the carrier and comprising at least one color pigment with antiviral activity and an inorganic matrix material.
- an air filter device in particular a breathing mask or a room air filter, which is equipped with a filter material according to the first general aspect of the invention.
- the stated object is achieved by a method for producing the filter material according to the invention or one of its embodiments, the method comprising at least the following steps.
- the carrier is provided.
- the carrier is coated with the at least one color pigment and the matrix material.
- the coating is z. B. by a deposition (separation) in high vacuum from the vapor phase.
- the at least one color pigment and the matrix material can be deposited on the carrier simultaneously (mixed evaporation, composite formation) or sequentially (layered composite formation).
- the above object is achieved by a method for inactivating viruses, in which the self-disinfecting antiviral filter material according to the invention or one of the embodiments is brought into contact with the viruses or a virus-containing material under the influence of visible light.
- the filter material according to the invention and the air filter device equipped with this filter material solve the above problem advantageously through the antiviral, reactive effect of the colored pigment, which in contact with virus particles z. B. from the air and / or from aerosols in the air hit the filter material and / or otherwise got into the filter material, the virus particles changed (inactivated) in a non-infectious state, in particular denatured or destroyed.
- the filter material according to the invention is therefore characterized by self-disinfection and disinfection of the air passing through.
- the term "disinfection” refers to the conversion of all virus particles or such a large proportion of virus particles into the non-infectious state that the treated air is not infectious when inhaled.
- the inorganic matrix material used according to the invention has particular advantages for fixing the at least one color pigment and fulfills three important tasks: it increases adhesion to the carrier, improves mechanical stability and increases the activity of the antiviral component.
- the increase in activity can be based, for example, on an increase in the efficiency of singlet oxygen formation by deaggregation of the at least one color pigment (deaggregation of a color pigment matrix), which as a result assumes a largely molecular photoactive state.
- inorganic matrix material permits an increase in the singlet oxygen formation efficiency, since dye molecules contained in the inorganic matrix material can also come into contact with atmospheric oxygen.
- color pigment refers to a colorant, i.e. a color-giving substance (colorant molecules) which absorbs light in the visible range of the electromagnetic spectrum and, in contrast to the soluble colorants, comprises particles that are in the respective liquid application medium or environmental environment or are essentially insoluble under the conditions of use.
- the color pigments with antiviral activity used according to the invention are preferably color pigments which can react to form singlet oxygen when exposed to light and in the presence of atmospheric oxygen (in the triplet state).
- the photochemical formation of singlet oxygen takes place particularly preferably when exposed to visible light with a wavelength in the wavelength range from 400 nm to 750 nm.
- Singlet oxygen advantageously forms a strong oxidizing agent with which the virus particles are denatured or destroyed.
- the at least one color pigment comprises at least one compound from the group of phthalocyanines, this group comprising in particular unsubstituted phthalocyanine, substituted phthalocyanine derivatives and complexes, in particular metal complexes, thereof. It is particularly preferably unsubstituted phthalocyanine itself (CazhHigNg) or metal-phthalocyanine complexes, in particular selected from the group comprising ZnPc, CIAIPc, FePc, NiPc, CoPc and CuPc (Pc here stands for phthalocyanine).
- the phthalocyanine compounds used in the present invention are typically water-insoluble and unsubstituted. However, the use of substituted phthalocyanines, which are preferably also water-insoluble, is also possible.
- the color pigments used according to the invention are advantageously distinguished by a particularly high yield of the formation of singlet oxygen.
- the metal phthalocyanines used for the composite coating by high-vacuum evaporation are ZnPc or CIAIPc, with the layer thicknesses preferably being able to vary between 20 nm and 500 nm.
- inorganic matrix material generally refers to any inorganic compound that is at least partially transparent in the visible region of the electromagnetic spectrum.
- the inorganic matrix material is selected from the group comprising metal oxides (including silicon dioxide), and particularly preferably selected from the group comprising SiCh, TiCh, ZnO, MoOa, and mixtures thereof (mixtures of at least two of these compounds). .
- metal oxides including silicon dioxide
- SiCh silicon Ch
- TiCh titanium Ch
- ZnO zirconium oxide
- MoOa magnesium oxide
- these matrix materials can be produced in compact form or in nanoporous form or deposited and used on the carrier, with the nanoporous form being preferred for some embodiments.
- the composite coating of color pigment and matrix material is preferably at least one thin layer, in particular a layer with a thickness in the range from 10 nm to 1000 nm.
- the proportion of the color pigment in the matrix material is typically in a range from 1 to 50% by volume, based on the matrix material.
- the composite coating is arranged on the air-permeable carrier.
- air-permeable support generally refers to any material that receives the composite coating and has a structure through which air can flow, in particular pores or holes.
- the air permeability of the support is maintained even upon incorporation of the composite coating which is supported by the structure without occluding it so that the filter material is air permeable.
- the carrier can be a one-piece material, e.g. a ply, sheet or sheet, and/or a multi-part material such as e.g. B. a granulate in a suitable holder or multiple layers, sheets or sheets.
- Composites are preferably used as the coating on the carrier, which are deposited by evaporation, in particular multi-source evaporation, of a phthalocyanine, in particular metal phthalocyanine, with at least one metal oxide together or successively in a high vacuum on the carrier, with advantageously an optionally provided subsequent tempering the can improve adhesion.
- Annealing conditions may vary depending on the particular composite materials, but are readily determined by those skilled in the art through routine experimentation. For example, the annealing can be performed at a temperature ranging from 50°C to 200°C and for a time ranging from 10 minutes to 5 hours.
- SiCh, TiCh or MoOa are used as metal oxides for the composite coating by high vacuum evaporation.
- MoOa can be easily prepared by thermal evaporation, e.g. B. by resistance heating, are deposited in high vacuum, while SiCh and TiCh can be evaporated at higher temperatures and are therefore typically deposited by electron beam evaporation (as described by Jäger et al. in Adv. Mat. (1996) 93-97) or sputtering .
- the carrier preferably comprises at least one layer of a layer or sheet material selected from the group consisting of woven textiles, nonwoven textiles, air-permeable plastics, paper, in particular filter paper, cardboard, organic porous materials and inorganic porous materials.
- the filter material according to the invention is preferably characterized in that the carrier with the composite coating is breathable, particularly suitable for breathing through the filter material, and/or in that the carrier with the composite coating is flexibly deformable.
- the filter material according to the invention can be used in a freely selectable form as an antiviral active material in respirator masks or in antimicrobial air filters.
- the filter material according to the invention is advantageously suitable for methods of killing viruses in which the filter material is in contact with the virus or the virus-containing material, e.g. B. air containing the virus or virus-containing material is brought.
- the color pigment with antiviral activity of the filter material according to the invention is a color pigment which reacts to form singlet oxygen when exposed to light and in the presence of oxygen, the contacting in such a method accordingly takes place in the presence of light and oxygen.
- FIG. 1 a sectional illustration of an embodiment of the filter material according to the invention
- FIG. 2 an application of the filter material in a respirator mask
- FIG. 3 an application of the filter material in an air cleaning device.
- a layer of the filter material 10 (see Figure 1, not to scale) of a conventional respirator is provided as a carrier 11 on which a composite coating 12 with the color pigment 13, z. B. from ZnPc, and the matrix material 14, z.
- B. from SiÜ2, with equal volume fractions with a layer thickness of z. B. 300 nm is applied.
- the adjustment of the filter material 10 for the specific application is done by cutting to the size and shape of a filter mount of an air filter device such. B. a respirator 21 (see Figure 2) or in an air cleaning device 22 (see Figure 3).
- the viruses are inactivated by air being drawn through the illuminated filter material 10 and passing over the composite coating and passing through it.
- the transport of the air is z. B. caused by the inhalation pressure in the respirator 21 or with a pumping device of the air purification device 22.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
- Veterinary Medicine (AREA)
- Environmental & Geological Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Analytical Chemistry (AREA)
- Textile Engineering (AREA)
- Biomedical Technology (AREA)
- Physical Education & Sports Medicine (AREA)
- Materials Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Toxicology (AREA)
- Geology (AREA)
- Medicinal Chemistry (AREA)
- Filtering Materials (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020121204.6A DE102020121204B3 (de) | 2020-08-12 | 2020-08-12 | Selbstdesinfizierendes antivirales Filtermaterial, dessen Herstellung und Anwendung, sowie Luftfiltereinrichtung mit dem Filtermaterial |
| PCT/EP2021/071855 WO2022033948A1 (de) | 2020-08-12 | 2021-08-05 | Selbstdesinfizierendes antivirales filtermaterial, dessen herstellung und anwendung, sowie luftfiltereinrichtung mit dem filtermaterial |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4196183A1 true EP4196183A1 (de) | 2023-06-21 |
Family
ID=77543477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21762629.0A Pending EP4196183A1 (de) | 2020-08-12 | 2021-08-05 | Selbstdesinfizierendes antivirales filtermaterial, dessen herstellung und anwendung, sowie luftfiltereinrichtung mit dem filtermaterial |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20230248876A1 (de) |
| EP (1) | EP4196183A1 (de) |
| JP (1) | JP7687564B2 (de) |
| DE (1) | DE102020121204B3 (de) |
| WO (1) | WO2022033948A1 (de) |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11253544A (ja) * | 1997-10-31 | 1999-09-21 | Matsushita Electric Ind Co Ltd | 多機能性部材とシート |
| JP2004350935A (ja) | 2003-05-29 | 2004-12-16 | Jigyo Sozo Kenkyusho:Kk | フィルター |
| CN101084342B (zh) * | 2004-11-02 | 2010-09-29 | 有限会社高·饭研究所 | 具有杀菌作用的过滤器、口罩等用片材 |
| US20070238660A1 (en) | 2006-03-31 | 2007-10-11 | Stephen Michielsen | Light activated antiviral materials and devices and methods for decontaminating virus infected environments |
| JP4962958B2 (ja) | 2007-07-27 | 2012-06-27 | 国立大学法人弘前大学 | 可視光応答型光触媒 |
| WO2009146412A1 (en) * | 2008-05-30 | 2009-12-03 | Filligent Limited | Protective face mask |
| JP4738493B2 (ja) | 2009-01-06 | 2011-08-03 | 清 加藤 | マスク |
| EP2435139B1 (de) | 2009-05-29 | 2016-10-05 | Innonix Technologies, Incorporated | Zusammensetzungen zur verwendung bei der reduzierung der übertragung menschlicher krankheitserreger |
| WO2012064894A1 (en) | 2010-11-09 | 2012-05-18 | Filligent (Hk) Limited | Antimicrobial compositions for incorporation into polymers |
| CN104116227B (zh) | 2014-04-09 | 2016-06-29 | 青岛阳光动力生物医药技术有限公司 | 一种抗菌且有效过滤pm2.5颗粒物的口罩滤片 |
| CN104689642A (zh) * | 2015-03-04 | 2015-06-10 | 青岛阳光动力生物医药技术有限公司 | 光能抗菌高效空气滤材及其在空气净化产品中应用 |
| US10617894B2 (en) | 2016-04-05 | 2020-04-14 | Innonix Technologies, Incorporated | Compositions for reducing inhalation of toxic air pollution components |
| WO2017196961A1 (en) | 2016-05-10 | 2017-11-16 | North Carolina State University | Photodynamic compositions, methods of making, and uses thereof |
| KR101930709B1 (ko) | 2016-06-13 | 2018-12-20 | (주)엘지하우시스 | 광촉매 기능성 필터 |
| FI127163B (en) * | 2016-11-17 | 2017-12-29 | Tty-Säätiö | photosensitizer |
| IT201700121151A1 (it) | 2017-10-25 | 2019-04-25 | Torino Politecnico | Procedimento per l’applicazione di un rivestimento antivirale ad un substrato e relativo rivestimento |
-
2020
- 2020-08-12 DE DE102020121204.6A patent/DE102020121204B3/de active Active
-
2021
- 2021-08-05 US US18/015,660 patent/US20230248876A1/en active Pending
- 2021-08-05 WO PCT/EP2021/071855 patent/WO2022033948A1/de not_active Ceased
- 2021-08-05 EP EP21762629.0A patent/EP4196183A1/de active Pending
- 2021-08-05 JP JP2023509536A patent/JP7687564B2/ja active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP2023537392A (ja) | 2023-08-31 |
| WO2022033948A1 (de) | 2022-02-17 |
| US20230248876A1 (en) | 2023-08-10 |
| JP7687564B2 (ja) | 2025-06-03 |
| DE102020121204B3 (de) | 2021-10-21 |
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