EP2158006A1 - Breathing means - Google Patents

Breathing means

Info

Publication number
EP2158006A1
EP2158006A1 EP20070729561 EP07729561A EP2158006A1 EP 2158006 A1 EP2158006 A1 EP 2158006A1 EP 20070729561 EP20070729561 EP 20070729561 EP 07729561 A EP07729561 A EP 07729561A EP 2158006 A1 EP2158006 A1 EP 2158006A1
Authority
EP
European Patent Office
Prior art keywords
breathing
filtering
purifying
fabric
virus
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.)
Withdrawn
Application number
EP20070729561
Other languages
German (de)
French (fr)
Inventor
Carlo Alberto Bignozzi
Renato Ambrogio Della Valle
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.)
NM Tech Nanomaterials and Microdevices Technology Ltd
Original Assignee
NM Tech Nanomaterials and Microdevices Technology Ltd
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 NM Tech Nanomaterials and Microdevices Technology Ltd filed Critical NM Tech Nanomaterials and Microdevices Technology Ltd
Priority to PCT/EP2007/055138 priority Critical patent/WO2008145175A1/en
Publication of EP2158006A1 publication Critical patent/EP2158006A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00Filters for breathing-protection purposes
    • A62B23/02Filters for breathing-protection purposes for respirators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/02Separation 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 adsorption, e.g. preparative gas chromatography
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/88Handling or mounting catalysts
    • B01D53/885Devices in general for catalytic purification of waste gases
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28002Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
    • B01J20/28004Sorbent size or size distribution, e.g. particle size
    • B01J20/28007Sorbent size or size distribution, e.g. particle size with size in the range 1-100 nanometers, e.g. nanosized particles, nanofibers, nanotubes, nanowires or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00Nanotechnology for materials or surface science, e.g. nanocomposites
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10Inorganic adsorbents
    • B01D2253/106Silica or silicates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10Inorganic adsorbents
    • B01D2253/112Metals or metal compounds not provided for in B01D2253/104 or B01D2253/106
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/30Physical properties of adsorbents
    • B01D2253/302Dimensions
    • B01D2253/304Linear dimensions, e.g. particle shape, diameter
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/20Metals or compounds thereof
    • B01D2255/207Transition metals
    • B01D2255/20707Titanium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/20Metals or compounds thereof
    • B01D2255/207Transition metals
    • B01D2255/20715Zirconium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/80Type of catalytic reaction
    • B01D2255/802Photocatalytic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/91Bacteria; Microorganisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/45Gas separation or purification devices adapted for specific applications
    • B01D2259/4541Gas separation or purification devices adapted for specific applications for portable use, e.g. gas masks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/80Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/804UV light

Abstract

A Breathing device (10; 30; 50; 60; 80) comprises mask means (11; 31; 61; 81) suitable for being applied to a face of a user, connecting means (12, 14, 16, 17; 32, 32a, 34, 36) protruding form said mask means (11; 31; 61; 81) and arranged for keeping said mask means (11; 31; 61; 81) in contact whit said face, said mask means (11; 31; 61; 81) being provided with purifying means (18, 19, 20; 38, 39, 40, 43; 38, 39, 51; 61, 69; 90, 91, 92) arranged for purifying a stream of air passing through said purifying means (18, 19, 20; 38, 39, 40, 43; 38, 39, 51; 61, 69; 90, 91, 92) , and it is characterised in that said purifying means (18, 19, 20; 38, 39, 40, 43; 38, 39, 51; 61, 69; 90, 91, 92) is provided with a nanomaterial product comprising a compound having the general formula AOx- (L-Men+)i; filtering means (18, 19, 20; 38, 39, 40, 43; 38, 39, 51, 55; 61, 69; 90, 91, 92) for a breathing device 10; 30; 50; 60; 80) provided with purifying means (18, 19, 20; 38, 39, 40, 43; 38, 39, 51; 61, 69; 90, 91, 92) containing a nanomaterial product comprising a compound having the general formula AOx- (L-Men+)i, in which AOx is a metal or metalloid oxide in which x indicates the number of the Oxygen atom(s) (O) bound to the metal (A) atom; Men+ is a metal ion; L is a bifunctional molecule that could bind both metal oxide or metalloid oxide (AOx) and the metal ion (Men+) , and i is a parameter indicating the number of (L-Men+) groups bound to the metal oxide AOx.

Description

Breathing means

The invention relates to breathing devices, such as, for example breathing masks and breathing fabrics provided with nanomaterials and/or nanomaterial products. Moreover, the invention relates to breathing devices, such as, for example, breathing masks and breathing fabrics comprising a nanomaterial composition having antibacterial, anti-microbial, antiviral, anti-mycotic, germicide, anti- polluting and photo-remediating properties. Contagious diseases spread very fast and in a very simple manner between users of public buildings such as schools, or also buses, trains, thus giving rise to epidemic diseases. For example, influenza or other types of human respiratory infections may be transmitted between different persons in very simple manner, the virus being passed to a person through the respiratory tract, therefore by breathing and/or sneezing, and/or coughing.

Moreover, the air, particularly in urban areas, is always very polluted, and the substances present in the atmosphere are mostly very harmful to the health, and may cause many respiratory diseases such as asthma, bronchial asthma, bronchitis, or also tumours, mainly of the respiratory organs . Therefore, some persons wear breathing masks for filtering the air breathed before it arrives at the respiratory tract hoping to block any pollution of the air, and/or any microbes, and/or viruses present in the air.

Moreover, patients in hospitals may be affected by contagious disease that may be passed to the other patients, or hospital attendants, or doctors.

Moreover, for certain types of person a possible contagion could be very dangerous, for example for newborn babies, or old persons, or patients in hospitals, great care is necessary to prevent a disease passing, for example from a nurse, and/or a hospital attendant, and/or a doctor to such a person . Therefore, nurses, and/or hospital attendants, and/or doctors often wear breathing masks for filtering the air breathed in so as to try to avoid being infected by a patient having a contagious disease and/or transmitting to the patient a disease affecting them.

Known breathing devices have nevertheless many drawbacks. Known breathing devices offer only a limited barrier to a user thereof. Therefore, the protection conferred to a user by known breathing devices is very limited.

In fact, many polluting substances pass through the breathing masks together with the breathed air and reach the respiratory tract of the user. Mainly polluting substances having small molecular dimensions, which are also the most dangerous substances for the user' s health, are not blocked by known breathing devices.

Moreover, known breathing devices offer only a physical barrier to many polluting substances that is inefficacious or insufficient for blocking many polluting substances. The same applies when considering known breathing devices used in hospitals or similar facilities.

Moreover viruses, or bacteria, or other dangerous microbes have very limited dimensions and may pass through the known breathing masks together with the air breathed in and/or out, reaching the respiratory tract of the user, or respectively spreading in the external environment.

An object of the invention is to improve known breathing devices . A further object is to provide a breathing device having antibacterial, anti-microbial, antiviral, anti-mycotic, germicide, anti-polluting, photo-remediating, photocatalytic properties .

A further object is to provide a breathing device comprising a nanomaterial product and having antibacterial, anti- microbial, antiviral, anti-mycotic, germicide, anti- polluting, photo-remediating, photocatalytic properties. Another object is to provide a breathing device that is efficacious in filtering the air breathed in by a user thereof, thus preventing microbes, viruses, germs, pollen, dust, or polluting substance to reach the respiratory tract of the user.

Another object is to provide a breathing device that is efficacious in filtering the air breathed out by a user thereof, thus preventing microbes, viruses, germs, or polluting substances spreading to the external environment. A still further object is to provide a breathing fabric having antibacterial, anti-microbial, antiviral, anti- mycotic, germicide, anti-polluting, photo-remediating, photocatalytic properties. A further object is to provide a breathing fabric comprising a nanomaterial product and having antibacterial, antimicrobial, antiviral, anti-mycotic, germicide, anti- polluting, photo-remediating, photocatalytic properties. A still further object is to provide a breathing device and/or a breathing fabric, and/or filtering means for a breathing device that is safe for the health of the user, and that may contact the skin of the user without causing any damage or excoriation, or allergic reaction thereto. A still further object is to provide a breathing device and/or a breathing fabric, and/or filtering means for a breathing device provided with an antibacterial, antimicrobial, antiviral, anti-mycotic, germicide, anti- polluting, photo-remediating, photocatalytic agent that is suitable for topic use. A still further object is to provide filtering means for a breathing device having antibacterial, anti-microbial, antiviral, anti-mycotic, germicide, anti-polluting, photo- remediating, photocatalytic properties.

Another object is to provide filtering means for a breathing device having antibacterial, anti-microbial, antiviral, anti- mycotic, germicide, anti-polluting, photo-remediating, photocatalytic properties and comprising a nanomaterial product . According to a first aspect of the invention, there is provided a breathing device comprising mask means suitable for being applied to a face of a user, connecting means protruding form said mask means and arranged for keeping said mask means in contact whit said face, said mask means being provided with purifying means arranged for purifying a stream of air passing through said purifying means, characterised in that said purifying means is provided with a nanomaterial product comprising a compound having the general formula AOx- (L-Me^)1.

The breathing device may be chosen in a group comprising for example, face mask, artificial brea