WO2008009862A2 - Filtre antiviral et son utilisation dans un purificateur d'air, climatiseur ou humidificateur - Google Patents
Filtre antiviral et son utilisation dans un purificateur d'air, climatiseur ou humidificateur Download PDFInfo
- Publication number
- WO2008009862A2 WO2008009862A2 PCT/FR2007/051691 FR2007051691W WO2008009862A2 WO 2008009862 A2 WO2008009862 A2 WO 2008009862A2 FR 2007051691 W FR2007051691 W FR 2007051691W WO 2008009862 A2 WO2008009862 A2 WO 2008009862A2
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- WO
- WIPO (PCT)
- Prior art keywords
- fiber bed
- antiviral
- polymer
- filter
- bed
- Prior art date
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
- D06M15/267—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof of unsaturated carboxylic esters having amino or quaternary ammonium groups
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- 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
- A01N33/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds
- A01N33/02—Amines; Quaternary ammonium compounds
- A01N33/04—Nitrogen directly attached to aliphatic or cycloaliphatic carbon atoms
-
- 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
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/356—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of other unsaturated compounds containing nitrogen, sulfur, silicon or phosphorus atoms
- D06M15/3562—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of other unsaturated compounds containing nitrogen, sulfur, silicon or phosphorus atoms containing nitrogen
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
Definitions
- Antiviral filter and its use in an air purifier, air conditioner or humidifier are provided.
- the present invention relates to the field of health risk and public health, particularly related to the presence of aerial viruses.
- the invention more particularly relates to an antiviral filter and optionally antibacterial which is capable of sequestering viruses and optionally bacteria present in the ambient air.
- the invention also relates to all products comprising said filter such as air conditioners, air purifiers, humidifiers, or medical devices such as surgical masks.
- Japanese Patent Application JP2004432430 describes a filter containing a compound extracted from the grammar Sasa veitchii, which would have antibacterial and antiviral virtues.
- US Patent 5,888,527 discloses an antiviral mask impregnated with tea polyphenol containing catechems and theaflavmas which would inactivate viruses by inhibiting viral replication and altering the physical properties of viral membranes.
- the international patent application WO03 / 051460 relates to a mask comprising a passive filter and an active disinfectant filter.
- the passive filter would retain dust particles, bacteria and spores, while the active filter would kill bacteria, spores and viruses that are too small to be blocked by the passive filter.
- the active filter comprises antibacterial, antibiotic or antiviral agents such as chlorohexidme or other antiseptic compounds containing chlorine or an antiseptic halogen.
- Kawabata et al. has been particularly interested in 4-vinylpyridine polymers, and has demonstrated that these polymers have antibacterial activity (Kawabata et al., antibacterial activity of soluble pyndinium-type polymer, Applied and Environmental Microbiology, 1988, pp. 2532-2535). and also antiviral activity when polymerized as 1.7 micron diameter beads in a nonwoven (N. Kawabata et al., 1998, Reactive & functional polymers, No. 37, p 213-218).
- the 4-vinylpyndine polymer is polymerized on a non-woven membrane having a pore size of 14 ⁇ m, in the presence of divmylbenzene, so as to obtain beads having a diameter of 1.7 microns.
- the presence of divmylbenzene is essential because in its absence, the polymerization leads to the production of a film of homopolymers of 4-vinylpyridme which makes it difficult to obtain a microporous membrane. It is thus essential that the 4-vinylpyridine be polymerized in the form of beads to obtain a microporous membrane.
- Kawabata et al. The efficacy of viral retention is due to the particular affinity of this particular pyridine polymer (N-benzyl-4-vinylpyridinium polychloride) with viruses. Without being able to explain the causes of this affinity, Kawabata hypothesizes that (1) the electrostatic interactions between the positive charges of the polymer and the negative charges of the viruses and (2) the hydrophobic interactions between this polymer and the viruses, could play important roles in this particular affinity. It should be noted that, in the absence of a control test, the test of this publication does not make it possible to identify whether the observed viral retention is actually due to the 4-vinylpyridine polymer or to the viral loss due to the experimental conditions.
- R 1 and R 2 independently are selected from linear or branched (C 1 -C) hydrocarbon chains, X is in the range of 0 to 1,
- R 4 is selected from a direct link and a linear or branched hydrocarbon chain (Ci-Ce),
- R 5 is selected from hydrogen or linear or branched (C 1 -C 6 ) hydrocarbon chains
- R 6 is selected from a direct bond or straight or branched (C 1 -C 6 ) hydrocarbon chains
- Ar is a nitrogen-containing heteroaromatic group, and wherein said precursor polymer is modified such that: - at least a portion of said nitrogen atoms are substituted with a substituent selected from the group consisting of C1-6 alkyl groups; C2 0 linear or connected, and
- At least a portion of the nitrogen atoms in said precursor polymer are quaternized.
- polymer with quaternized nitrogen atoms refers to compounds of the following general formula:
- non-covalent in the sense of WO2006 / 071191 refers to a non-covalent bond such as a hydrogen bond.
- the Applicant has sought to develop a filter having antiviral activity, said filter having a small pore size, preferably less than 5 ⁇ m, very preferably less than 1 ⁇ m and even more
- the filter according to the invention can be prepared according to a simple method which does not require a m situ polymerization, said filter having a non-occlusive surface, implying that the membrane or bed of fibers remains microporous (se).
- the Applicant thus establishes that the affinity between a polymer and a virus is due to the density of the positive charges distributed in the polymeric network located over the entire surface of the fiber bed, said fillers being preferably carried by functions amines located in the main chain and / or in the side chains of the polymer.
- the purpose of the present invention is to propose an alternative solution to existing antiviral filters. to meet the need for protection against aerial viruses, and relates to the use of a cationic polymer preferably having more than one amine function per unit, which can be deposited on a bed of fibers, preferably non-woven, by as a virus trap.
- the present invention more particularly for ob] and a fiber bed, preferably negatively charged, coated with at least one cationic polymer having preferably more than one amino function per unit, whose nitrogen atoms are not substituted by alkyl groups and whose nitrogen atoms are not quatermsés, and having a protonation rate of at least 20%.
- fiber bed any woven or non-woven layer composed of natural, artificial or synthetic polymer fibers, for example cellulosic or non-cellulosic fibers such as polyester, polyethylene, polypropylene or polyamide fibers.
- the fiber bed is microporous, that is to say it has a small pore size, preferably less than 5 ⁇ m, very preferably less than 1 ⁇ m and more preferably more preferably less than or equal to 0.2 microns.
- cationic polymer any protonable polymer, preferably of the type comprising amine functions on its main chain and / or on its side chain or chains, and having a protonation rate such that it is capable of to attach to a fiber bed on the one hand and fix viruses on the other hand.
- the protonation rate of a cationic polymer is at least 20%.
- the cationic polymer of the present invention is therefore different from that described in WO2006 / 071191 in that it does not comprise nitrogen atoms substituted by alkyl groups or quaternized nitrogen atoms in the sense of WO2006 / 071191.
- the cationic polymer of the present invention comprises amine functions on its main chain and / or its side chain (s), and has a protonation D of at least 20%.
- protonated amme or “proton nitrogen” refers to compounds of the following general formula:
- “Protonation rate” means the percentage of nitrogen atoms that are protonated.
- the thus coated fiber bed has a charge density of 6 IxICT a0 IxItT 8 mol load per cm z of the fiber bed or Ixio "5a IxI (T 3 meq per cm z
- the fiber bed preferably said fiber bed, has a loading density of IxICT of 7 moles of filler per cm 2 of bed or 1x1 CT 4 meq per cm 2 of fiber bed.
- the determination of the charge density per cm 2 of bed of fibers is carried out by the methods known to those skilled in the art such as those making it possible to determine the exchange capacity of a membrane or an ion exchange resin. described by F. Helffe ⁇ ch, Ion Exchange. McGraw-Hill Book Company Inc. Ed. (1962), Chapter 4; pages 72-94.
- said polymer comprises cationic groups on its main chain, and / or on its side chain or chains.
- said cationic polymer comprises a polymer carrying amine groups (primary, secondary, tertiary) on its main chain, at least part of the amino groups, advantageously at least 20%, preferably at least 30%, very preferably preferably at least 50%, amino groups being protonated.
- these cationic polymers are polydimethylamine-co-epichlorohydrin or polydimethylamine-co-epichlorohydrin-co-ethylenediamine.
- Percent protonation assay is performed by techniques well known to those skilled in the art such as that described by Eyler et al. (Eyler RW, Krug TS, Siephius S, Analytical Chemistry 1947; 19 (1) 24-7). Other techniques for determining the percentage of protonation are described by Muller et al. (Muller G, C Ripoll and E Selegny, European Polymer Journal, Volume 7 (10), 1971, pages 1373-1392).
- said cationic polymer comprises a polymer carrying amine groups (primary, secondary, tertiary) on its chain or side chain (s), at least part of the amino groups, preferably at least 20% , preferably at least 30%, very preferably at least 50%, amino groups being protonated.
- these cationic polymers are polyvinylamine, modified polyacrylamide, polyvinylimidazole, diethylaminoethyl polysaccharides, chitosan, polymethacrylate, preferably poly (II). dirtiethylaminoethyl methacrylate, and do not include 4-vinylpy ⁇ dine.
- said cationic polymer comprises a polymer carrying amme groups (primary, secondary, tertiary) on its main chain and on its side chain (s), at least part of the groups. amino, and preferably at least 20%, preferably at least 30%, very preferably at least 50%, amino groups being protonated.
- these cationic polymers are polyethyleneimine.
- said polymer is polyethylene imme.
- the present invention also ob] and an antiviral filter and optionally antibacterial comprising at least one fiber bed coated with at least one cationic polymer as described above.
- the filter of the invention is an antiviral and antibacterial filter, and comprises at least one fiber bed coated with a cationic polymer as described above, said fiber bed having an equal pore size or less than 0.2 ⁇ m.
- the pore size equal to or less than 0.2 ⁇ m imparts antibacterial property to the fiber bed; the surface of this fiber bed is then covered with at least one cationic polymer, the fiber bed thus acquires an antiviral property in addition to the antibacterial property.
- the antiviral properties of the fiber bed are understood to mean the capacity of said fiber bed to sequester the viruses.
- infectious viruses is understood to mean influenza viruses (influenza virus A, B and C), coronaviruses (by example SARS-CoV).
- viruses also concerned by the invention include smallpox virus, bacteriophage (E. coli), hepatitis viruses, poliovirus, rotavirus, tobacco mosaic virus, Ebola virus and other infectious viruses.
- the filter of the invention is an antiviral and antibacte ⁇ en filter, and comprises at least one fiber bed coated with a cationic polymer as described above, and at least one fiber bed having a size of pores equal to or less than 0.2 ⁇ m.
- the fiber bed according to the invention is effective for a period of at least 5 hours, preferably at least 12 hours and very preferably at least 18 hours.
- the present invention also relates to an air purifier, an air conditioner or a humidifier comprising at least one antiviral filter and optionally antibacterial as described above.
- the present invention also relates to a medical device comprising at least one antiviral filter and optionally antibacterial as described above, including a surgical mask, bandages, protective clothing such as a tracksuit ...
- the present invention relates to a method of preparing a fiber bed with antiviral property, comprising contacting said fiber bed with a cationic polymer solution as described above, and then a drying step. When the cationic polymer is brought into contact with the fiber bed, the cationic functions, in particular quaternary amine, will interact with the fiber bed, which leads to the fixation of the polymer on the fiber bed.
- the cationic polymer is solubilized in a solvent or a mixture of solvent.
- the solvent is a polar solvent, preferably water.
- the cationic polymer is solubilized in a lonizable salt, especially NaCl.
- the concentration of the polymer in said cationic polymer solution is
- 0.1 to 200 gl -1 preferably 1 to 100 gl -1 , more preferably 20 to 80 gl -1 and most preferably 40 to 50 g -1 -1 .
- the pH of the polymer solution is preferably acidic, preferably from 3 to 6.5, and very preferably the pH of the polymer solution is 6.
- the fiber bed is dipped in the polymer solution at room temperature or the polymer solution is sprayed at room temperature onto the fiber bed.
- the fiber bed is soaked in the polymer solution for 1 minute to 3 hours, preferably for 5 minutes to 1 hour, very preferably for 10 to 30 minutes.
- the fiber bed is washed with water before drying so as to remove the excess of polymer solution.
- the fiber bed is allowed to dry at room temperature by evaporation or vented air.
- the drying step can be accelerated by passage in a ventilated oven or under vacuum.
- the thickness of the resulting polymer film on the surface of the fiber bed is 0.5 ITT ⁇ .mu.m to 5 .mu.m, preferably from 0.001 to 1 micron, most preferably from 0.001 to 0.01 .mu.m .
- the present invention comprises a method of preparing an antiviral property fiber bed as described above further comprising a step of crosslinking the polymer after drying. This optional operation sometimes makes it possible to optimize the fixation of the polymer on the fibers.
- the present invention also comprises a process for preparing a fiber bed with antiviral and antibacterial properties in which the process for preparing a fiber bed with antiviral property as described above is applied to a bed of fibers comprising a pores equal to or less than 0.2 ⁇ m.
- PEI polyethylene imne
- the fiber bed used in these experiments comes from the third layer of masks of surgeons
- the protonation rate of the PEI is 75% ⁇ 5% (14 ml / 18 ml). 5
- a specific surface of the fiber bed (232 cm 2) was dipped for 12 hours in 50 ml of a solution 4.4% of CDR in NaCl 0.2 mol.l ".
- the cte fiber bed is then placed in a 0.1 mol.l -1 solution of HCl in order to protonate all of the fixed PEI.
- the fiber bed is then washed with water to constant pH to remove excess HCl.
- the fiber bed is finally placed in 8 ml of water.
- the amount of positive charge present on the fiber bed is ⁇ osee by the soda 0.01 mol.l "1 .
- the initial pH is 8.56.
- the pH value of 8 corresponds to an optimum fixing pH determined beforehand.
- the pH value of 6 makes it possible to increase the protonation, preferably the quaternization of the PEI (7 ⁇ pKa ⁇ 9) and thus to improve its fixation.
- the layer is then drained, washed with water while stirring slowly during 10 h, then air dried. Finally, the layer is sterilized under UV before being mounted in the filtration cell.
- T4 of the E. coli strain was chosen as the test virus.
- T4 bacteriophage and E. coli strain are both non-pathogenic to humans and the environment.
- Medium 1 is used to infect E. coli with phage and to perform the filtration experiment. It has a composition for one liter of deionized water (Milliro®): extract of peptone and meat: 13g, yeast extract: 5g; NaCl: 5g; KH 2 PO 4 : 8g; NaOH to obtain a pH of 7.6.
- Mcro® deionized water
- Medium 2 richer than the first, is used for the phage assay. It has for composition for a liter of deionized water
- Peptone, meat and yeast extracts are substrates rich in proteins, carbohydrates and water-soluble vitamins that are used for bacterial growth.
- Glucose is a carbohydrate that has the same role.
- NaCl, CaCl 2 , MgCl 2 are salts necessary for the survival of living organisms.
- KH 2 PO 4 is a buffer that maintains a constant pH.
- the media 1 and 2 once prepared, are divided into Erlenmeyer 250 J cm. They are used in liquid form or in gelled form (for medium 2) by incorporating agar at 3% by weight (polysaccharide gelling agent). The latter is run in petri dishes and is used to perform the counts during the assay.
- the media are sterilized by autoclave (120 ° C. for 20 minutes) and then stored in a cold room. Glucose is autoclaved separately to avoid caramelization with the medium.
- the assembly is illustrated in Figure 1. It consists of an air compressor aerosol generator (Diffusion0 Technique füre - Saint-Etienne - France), connected to a nebulizer (Atomisor NL 11). A 0.22 ⁇ m pore size gas filter (Gelman) is placed between the generator and the nebulizer to prevent parasitic bacterial contamination.
- the cell is a two-part glass filter holder having an air inlet and an outlet. The membrane is inserted sterilely between two rubber seals covering the lapping of the cell. The whole is held by clamps. 0 The output of the cell is connected to a liquid trap
- E. coli is inoculated with platinum loop in 150 cm 3 of medium 1 at 37 ° C.
- the evolution of the growth of the bacterium is followed by a UV / visible spectrophotometer.
- 18 ⁇ l of a reference solution of phages (containing 10 12 phages / ml) are diluted in 182 ⁇ l of physiological saline.
- 20 .mu.l of this solution are then inoculated into medium 1 containing E. coli.
- the amount of phages injected must always be proportional to the cell population.
- each tube is then added to each of the tubes.
- the contents of each tube are spread on Petri dishes containing solid agar (3% agar) of medium 2.
- the dishes are placed at 37 ° C. for 24 hours before counting the lysis plaques.
- the stock solution is also titrated in the same way (with a dilution range up to 10 "u ) and serves as a reference for each experiment.
- the loss factor is equal to the number of viruses per cm 3 of stock solution divided by the number of phages per cm 3 of the receptor solution after filtration.
- the loss factor of the mask is 5.2. Given the loss factor specific to mounting alone, the commercial surgical mask is totally ineffective vis-à-vis viruses.
- the efficiency of viral retention of the fiber bed without treatment was measured. 0.43 x 10 10 viruses per cm 3 diffused through this untreated fiber bed for a nebulized stock solution containing 1.22 x 10 10 viruses per cm 3 .
- the loss factor due to the untreated fiber bed is therefore 2.9. This factor is inferior to that of the 3-layer surgical mask, which makes sense, since the two polypropylene layers intended for bacterial filtration also filter the viruses very slightly.
- the measurement of viral retention by this layer shows that no virus is detected after filtration.
- the retention of viruses by the treated layer 3 is therefore total.
- This layer has become totally barrier to viruses by our treatment.
- PEI is therefore a very effective polymer for making the filtration system barrier to viruses.
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009520024A JP2009543957A (ja) | 2006-07-19 | 2007-07-19 | 抗ウイルス性フィルター、および空気清浄器、空調装置、または空気加湿器におけるその使用 |
CA 2658142 CA2658142A1 (fr) | 2006-07-19 | 2007-07-19 | Filtre antiviral et son utilisation dans un purificateur d'air, climatiseur ou humidificateur |
EP07823609A EP2047028A2 (fr) | 2006-07-19 | 2007-07-19 | Filtre antiviral et son utilisation dans un purificateur d'air, climatiseur ou humidificateur |
US12/374,145 US20090299250A1 (en) | 2006-07-19 | 2007-07-19 | Antiviral filter and its use in an air purifier, air conditioner or air humidifier |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0606591A FR2904010A1 (fr) | 2006-07-19 | 2006-07-19 | Filtre antiviral et son utilisation dans un purificateur d'air , climatiseur ou humidificateur |
FR0606591 | 2006-07-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2008009862A2 true WO2008009862A2 (fr) | 2008-01-24 |
WO2008009862A3 WO2008009862A3 (fr) | 2008-03-20 |
Family
ID=37969851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2007/051691 WO2008009862A2 (fr) | 2006-07-19 | 2007-07-19 | Filtre antiviral et son utilisation dans un purificateur d'air, climatiseur ou humidificateur |
Country Status (7)
Country | Link |
---|---|
US (1) | US20090299250A1 (fr) |
EP (1) | EP2047028A2 (fr) |
JP (1) | JP2009543957A (fr) |
CN (1) | CN101501269A (fr) |
CA (1) | CA2658142A1 (fr) |
FR (1) | FR2904010A1 (fr) |
WO (1) | WO2008009862A2 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101611675B1 (ko) * | 2013-12-31 | 2016-04-11 | 도레이케미칼 주식회사 | 양전하 필터 카트리지 및 이의 제조방법 |
KR101611676B1 (ko) * | 2013-12-31 | 2016-04-11 | 도레이케미칼 주식회사 | 양전하 필터 카트리지 및 이의 제조방법 |
CN108607139A (zh) * | 2016-12-12 | 2018-10-02 | 美国再生科技有限责任公司 | 经由吸入将富含血小板血浆溶液递送到个人的系统 |
CN108277647A (zh) * | 2017-01-06 | 2018-07-13 | 成都瑞沐生物医药科技有限公司 | 颗粒物阻隔材料及其在防雾霾中的应用 |
CN107088473B (zh) * | 2017-06-13 | 2020-04-10 | 青岛海纳能源环保科技开发有限公司 | 一种极性物质吸附分离与提纯材料的制备及使用方法 |
CN110319510A (zh) * | 2019-05-22 | 2019-10-11 | 安徽三品技术服务有限公司 | 基于生态负离子生成芯片技术的空气净化设备 |
WO2021030300A2 (fr) * | 2019-08-09 | 2021-02-18 | William Marsh Rice University | Filtres en graphène induit par laser, et leurs procédés de fabrication et d'utilisation |
TWM625350U (zh) * | 2020-03-12 | 2022-04-11 | 劍亮 龔 | 空氣過濾系統及抗病毒面罩 |
WO2023158923A1 (fr) * | 2022-02-18 | 2023-08-24 | C-Polar Technologies, Inc. | Matériaux électret à charge d'espace biocompatibles présentant ades effets antibactériens et antiviraux et leurs procédés de fabrication |
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US20040166753A1 (en) * | 2002-06-10 | 2004-08-26 | Millward Dan B. | Modification of fabric fibers |
US20050137540A1 (en) * | 2003-12-23 | 2005-06-23 | Kimberly-Clark Worldwide, Inc. | Bacteria removing wipe |
WO2006071191A1 (fr) * | 2004-12-30 | 2006-07-06 | Appeartex Ab | Produit antimicrobien et antiviral |
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CA2074509A1 (fr) * | 1990-11-29 | 1992-05-30 | Koji Abe | Matiere et agent antibacteriens contenant un complexe polyelectrolytique |
WO1995018265A1 (fr) * | 1993-12-28 | 1995-07-06 | Little Rapids Corporation | Filtres jetables et leur procede de fabrication |
US5888527A (en) * | 1995-05-11 | 1999-03-30 | Matsushita Seiko Co., Ltd. | Gargling cup, antiviral mask, antiviral filter, antifungal, antibacterial, and antiviral filter air cleaner and air-cleaner humidifier |
JPH0928778A (ja) * | 1995-07-14 | 1997-02-04 | Mitsubishi Rayon Co Ltd | 消臭剤並びに消臭繊維及びその製造方法 |
US8119780B2 (en) * | 2006-06-02 | 2012-02-21 | Synedgen, Inc. | Chitosan-derivative compounds and methods of controlling microbial populations |
US20070292486A1 (en) * | 2006-06-15 | 2007-12-20 | The Penn State Research Foundation | Novel polymer-nano/microparticle composites |
-
2006
- 2006-07-19 FR FR0606591A patent/FR2904010A1/fr not_active Withdrawn
-
2007
- 2007-07-19 JP JP2009520024A patent/JP2009543957A/ja active Pending
- 2007-07-19 WO PCT/FR2007/051691 patent/WO2008009862A2/fr active Application Filing
- 2007-07-19 CN CNA2007800297938A patent/CN101501269A/zh active Pending
- 2007-07-19 CA CA 2658142 patent/CA2658142A1/fr not_active Abandoned
- 2007-07-19 US US12/374,145 patent/US20090299250A1/en not_active Abandoned
- 2007-07-19 EP EP07823609A patent/EP2047028A2/fr not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040166753A1 (en) * | 2002-06-10 | 2004-08-26 | Millward Dan B. | Modification of fabric fibers |
US20050137540A1 (en) * | 2003-12-23 | 2005-06-23 | Kimberly-Clark Worldwide, Inc. | Bacteria removing wipe |
WO2006071191A1 (fr) * | 2004-12-30 | 2006-07-06 | Appeartex Ab | Produit antimicrobien et antiviral |
Also Published As
Publication number | Publication date |
---|---|
CA2658142A1 (fr) | 2008-01-24 |
FR2904010A1 (fr) | 2008-01-25 |
US20090299250A1 (en) | 2009-12-03 |
JP2009543957A (ja) | 2009-12-10 |
EP2047028A2 (fr) | 2009-04-15 |
CN101501269A (zh) | 2009-08-05 |
WO2008009862A3 (fr) | 2008-03-20 |
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