WO2006108985A1 - Substrat microbicide - Google Patents

Substrat microbicide Download PDF

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Publication number
WO2006108985A1
WO2006108985A1 PCT/FR2006/050319 FR2006050319W WO2006108985A1 WO 2006108985 A1 WO2006108985 A1 WO 2006108985A1 FR 2006050319 W FR2006050319 W FR 2006050319W WO 2006108985 A1 WO2006108985 A1 WO 2006108985A1
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WO
WIPO (PCT)
Prior art keywords
substrate according
glazing
substrate
compound
glass
Prior art date
Application number
PCT/FR2006/050319
Other languages
English (en)
French (fr)
Inventor
Catherine Jacquiod
Léthicia GUENEAU
Sophie Vanpoulle
Ronan Garrec
Jean-Gérard LECONTE
Original Assignee
Saint-Gobain Glass France
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
Priority claimed from FR0550921A external-priority patent/FR2884147B3/fr
Application filed by Saint-Gobain Glass France filed Critical Saint-Gobain Glass France
Priority to GB0720323A priority Critical patent/GB2442364A/en
Priority to JP2008505937A priority patent/JP2008538305A/ja
Priority to DE212006000030U priority patent/DE212006000030U1/de
Priority to US11/911,270 priority patent/US8349445B2/en
Publication of WO2006108985A1 publication Critical patent/WO2006108985A1/fr

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/39
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS 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
    • A61L2/00Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/23Solid substances, e.g. granules, powders, blocks, tablets
    • A61L2/232Solid substances, e.g. granules, powders, blocks, tablets layered or coated
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS 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
    • A61L2/00Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/23Solid substances, e.g. granules, powders, blocks, tablets
    • A61L2/238Metals or alloys, e.g. oligodynamic metals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/063Titanium; Oxides or hydroxides thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08Heat treatment
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/006Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/22Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/22Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
    • C03C17/23Oxides
    • C03C17/25Oxides by deposition from the liquid phase
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/22Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
    • C03C17/23Oxides
    • C03C17/25Oxides by deposition from the liquid phase
    • C03C17/253Coating containing SnO2
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/22Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
    • C03C17/23Oxides
    • C03C17/25Oxides by deposition from the liquid phase
    • C03C17/256Coating containing TiO2
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3607Coatings of the type glass/inorganic compound/metal
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C25/00Surface treatment of fibres or filaments made from glass, minerals or slags
    • C03C25/10Coating
    • C03C25/42Coatings containing inorganic materials
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5025Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
    • C04B41/5041Titanium oxide or titanates
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5025Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
    • C04B41/505Tin oxide
    • B01J35/23
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02Impregnation, coating or precipitation
    • B01J37/0215Coating
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2204/00Glasses, glazes or enamels with special properties
    • C03C2204/02Antibacterial glass, glaze or enamel
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00Coatings on glass
    • C03C2217/20Materials for coating a single layer on glass
    • C03C2217/21Oxides
    • C03C2217/212TiO2
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00Coatings on glass
    • C03C2217/20Materials for coating a single layer on glass
    • C03C2217/21Oxides
    • C03C2217/24Doped oxides
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00Coatings on glass
    • C03C2217/40Coatings comprising at least one inhomogeneous layer
    • C03C2217/425Coatings comprising at least one inhomogeneous layer consisting of a porous layer
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00Coatings on glass
    • C03C2217/40Coatings comprising at least one inhomogeneous layer
    • C03C2217/43Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase
    • C03C2217/46Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the dispersed phase
    • C03C2217/47Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the dispersed phase consisting of a specific material
    • C03C2217/475Inorganic materials
    • C03C2217/477Titanium oxide
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00Coatings on glass
    • C03C2217/70Properties of coatings
    • C03C2217/71Photocatalytic coatings
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20Resistance against chemical, physical or biological attack
    • C04B2111/2038Resistance against physical degradation
    • C04B2111/2061Materials containing photocatalysts, e.g. TiO2, for avoiding staining by air pollutants or the like
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20Resistance against chemical, physical or biological attack
    • C04B2111/2092Resistance against biological degradation

Definitions

  • the present invention aims to destroy in whole or in part, or at least block the development of microorganisms such as bacteria, viruses, fungi including confined space such as interior building or transport vehicle.
  • microorganisms By blocking their development, it is meant that the quantity of microorganisms is at most maintained or slightly reduced: for example, it is referred to as a bacteriostatic functionality, while bactericidal functionality refers to a more substantial decrease in the amount of microorganisms. bacteria.
  • any nosocomial infections known sources may be air, water, hands or clothing of the occupants, the internal surfaces of the hospital, or
  • microorganisms targeted by the invention are pathogenic for humans or not.
  • bacteria such as Bacillus, Bordetella, Borrelia, Brucella and Campylobacter.
  • Chlamydophila Clostridium, Corynebacterium diphtheriae, Escherichia coli, Haemophilus influenzae, Legionella, Listeria, Mycobacterium leprae, Tuberculosis, Mycoplasma, Neisseria, Pseudomonas, Salmonella, Staphylococci, Streptococci, Treponema pallidum, Vibrio cholerae, Yersinia pestis ...
  • SARS SARS, AIDS, flu, hepatitis, herpes, shingles, chickenpox, coronavirus, Ebola ...
  • fungi mycosis, Aspergillus, Candida ...
  • the object of the invention is achieved by the invention which relates to a substrate comprising at least one photocatalytic compound active under the illumination conditions of a building or transport vehicle interior intended for to neutralize the microorganisms coming into contact with it.
  • photocatalytic compound is meant one or more of the compounds TiO 2 , WO 3 , CdO 3 , In 2 O 3 , Ag 2 O, MnO 2 and Cu 2 O 3 , Fe 2 O 3 , V 2 O 5 , ZrO 2 , RuO 2 and Cr 2 O 3 , CoO 3 , NiO, SnO 2 , CeO 2 and Nb 2 O 3 , KTaO 3 and SrTiO 3 , K 4 NbO 7 - Of these, UO 2 is particularly preferred, at least partially crystallized in anatase and / or rutile form and, to a lesser extent, SrTiO 3 and K 4 NbOi 7 .
  • the illumination conditions of a building interior or transport vehicle are characterized by a spectrum consisting essentially of visible light and a small amount of residual ultraviolet.
  • the photocatalytic compound according to the invention is therefore selected so as to be active under visible light, or to have a significantly increased ultraviolet activity compared to that of conventional photocatalytic compounds.
  • neutralizing is meant here at least the maintenance of the starting quantity of the microorganisms; the invention excludes an increase of this quantity. The development and proliferation of microorganisms are thus prevented and, in almost all cases, the recovery surface of the microorganisms decreases, even if their quantity is maintained. The neutralization of microorganisms can go according to the invention until their total destruction.
  • Neutralized microorganisms can be pathogenic to humans, in which case the invention provides a benefit to human health. They can also be non-pathogenic for humans: it can then be to preserve the cleanliness of a transparent substrate by avoiding the formation of fungi ...
  • said photocatalytic compound comprises TiO 2 subjected to a heat treatment under a nitrogen or nitrogen atmosphere and at least one reducing gas for a time sufficient to render it capable of absorbing photons from the visible.
  • the heat treatment is carried out at a temperature of at least 250 ° C. and up to 700 ° C., for a few fractions of seconds to a few hours.
  • the reducing gas at least one of hydrogen and hydrocarbons such as methane, the nitrogen: reducing gas ratio (s) being in particular between 100: 0 and 50:50.
  • the heat treatment is likely to correspond to a conventional annealing treatment or tempering treatment of a glass substrate.
  • the substrate comprises, in intimate association, a first photocatalytic compound and a second compound having a jump of energy between the upper level of its valence band and the lower level of its conduction band corresponding to a wavelength in the visible range.
  • Said first photocatalytic compound is selected from those already mentioned, and said second compound selected from GaP, CdS, KTa 0 7 7 N 0, 23 O 3, CdSe, SrTiO 3, TiO 2, ZnO, Fe 2 O 3, WO 3, Nb 2 O 5 , V 2 O 5 , Eu 2 O 3 in a non-limiting manner.
  • the intimate association of the two compounds can be obtained by a non-reactive process, for example by mixing powders and heat treatment in a binder, or by liquid after mixing solutions, and then heat treatment and / or drying. It can also be obtained by a reactive process such as liquid or gas pyrolysis (thermal CVD) from precursors of the two compounds, or cathodic sputtering using a target consisting for example of a mixture of two metals precursors of said first and second compounds.
  • a non-reactive process for example by mixing powders and heat treatment in a binder, or by liquid after mixing solutions, and then heat treatment and / or drying. It can also be obtained by a reactive process such as liquid or gas pyrolysis (thermal CVD) from precursors of the two compounds, or cathodic sputtering using a target consisting for example of a mixture of two metals precursors of said first and second compounds.
  • a reactive process such as liquid or gas pyrolysis (thermal CVD) from precursors of the
  • the first and the second variants are both intended to obtain a photocatalytically active compound under visible spectrum illumination exclusively, the spectrum predominantly present in building interior, transport vehicle.
  • said photocatalytic compound is integrated in a mesoporous structure.
  • This structure based on at least one compound - in particular oxide - of at least one of the elements Si, W, Sb, Ti, Zr, Ta, V, B, Pb, Mg, Al, Mn, Co, Ni, Sn, Zn, In, Fe, Mo ... comprises a three-dimensional network of pores of diameters between 2 and 50 nm communicating with each other.
  • One embodiment of this variant consists of a mesoporous layer based on silica incorporating anatase crystallized TiO 2 nanoparticles and approximately 50 nm in size.
  • This layer can be obtained by liquid using structuring agents such as cetyltrimethylammonium bromide (CTAB) or polyoxyethylene-polyoxypropylene block copolymer which are degraded by heat treatment, leaving room for the mesopores.
  • structuring agents such as cetyltrimethylammonium bromide (CTAB) or polyoxyethylene-polyoxypropylene block copolymer which are degraded by heat treatment, leaving room for the mesopores.
  • CTAB cetyltrimethylammonium bromide
  • WO 03/87002. This third variant provides a substrate whose photocatalytic activity under ultraviolet radiation is considerably exacerbated, which is useful in the presence of a low residual ultraviolet illumination such as inside building, transport vehicle ...
  • functional agents such as microbicides, deodorants, antibacterials or others are advantageously contained in the pores of the structure.
  • said photocatalytic compound advantageously comprises TiO 2 doped with N and / or S and / or at least one metal ion and, in particular:
  • TiO 2 is obtained by the liquid route from at least one precursor containing Ti in the presence of at least one ammonium-functional compound, and then heat treatment; TiO 2 doped with V, Cr, Mn, Mo, In, Sn, Fe, Ce, Co, Cu, Nd, Zn, W, Nb, Ta,
  • Bi, Ni, Ru in a concentration of 0.5 to 10 mol% is obtained by coprecipitation of a titanium compound such as an alkoxide and a metal salt, followed by a heat treatment.
  • the number of charge carriers is increased.
  • This doping can also be done only on the surface of the titanium oxide or, if appropriate, of the entire coating of which it forms part, surface doping carried out by covering at least a portion of the coating with an oxide layer or of metal salts.
  • said photocatalytic compound, or at least part of the coating which incorporates it is covered with a noble metal in the form of a thin layer of the Pt, Rh, Ag, Pd type.
  • the photocatalytic phenomenon is amplified by increasing the yield and / or the kinetics of the photocatalytic reactions.
  • Ag is a microbicide.
  • the substrate of the invention is based on glass or polymer (s) in particular transparent or a ceramic substrate or glass-ceramic substrate or substrate of architectural material of the type coated facade, slabs or concrete pavement, architectural concrete, blockwork , brick, tile, cementitious composition material, terra-cotta, slate, stone, metal surface, or glass-based fibrous substrate of the mineral wool insulation type, or reinforcing glass wire, fabric, building wall cladding material such as wallpaper, or wood-based or paint.
  • glass or polymer in particular transparent or a ceramic substrate or glass-ceramic substrate or substrate of architectural material of the type coated facade, slabs or concrete pavement, architectural concrete, blockwork , brick, tile, cementitious composition material, terra-cotta, slate, stone, metal surface, or glass-based fibrous substrate of the mineral wool insulation type, or reinforcing glass wire, fabric, building wall cladding material such as wallpaper, or wood-based or paint.
  • the substrate of the invention is made of flat glass, in particular soda-lime glass.
  • flat here designates a substrate in a flat plate or in faces curved or curved, monolithic or laminated, where appropriate assembled in multiple glazing delimiting at least one insulating gas strip.
  • said photocatalytic compound is advantageously associated with the interposition of heteroepitaxial growth sub-layers of said photocatalytic compound
  • optically functional sublayers - thermal control underlays; and or
  • said compound is contained in a layer with a thickness of between 5 nm and 1 ⁇ m.
  • the invention furthermore relates to the use of the substrate described above - as an interior surface of a collective building such as a hospital or individual house or apartment, furniture, or interior of any vehicle. transportation by land, water or air, including clothing or any accessories worn by the occupant.
  • glazing as self-cleaning glazing, including anti-fog, antifouling and anti-condensation, especially for the building of the multiple glazing type, double glazing, windshield-type vehicle glazing, rear window, automotive side glazing, glazing for train, plane, boat, utility glazing such as aquarium, showcase, greenhouse, interior furnishing - tablet, shower stall -, furniture urban, mirror, computer-type display system screen, television, telephone, electrically controllable glazing such as electrochromic glazing, liquid crystal, electroluminescent, photovoltaic glazing, lamp. - in the filtration of liquid or gas, ventilation and / or air conditioning devices, ventilation ducts, water pipes.
  • the invention is illustrated by the following example.
  • the glass is deposited on the glass still in the form of a float glass ribbon, a silicon oxycarbide based undercoating noted for convenience SiOC (without prejudging the actual rate of oxygen and carbon in the coating) - the glass is a clear glass silico-sodo-calcium 4 mm thick, as marketed by Saint-Gobain Glass France under the name Planilux-.
  • This underlayer is deposited by CVD from precursors Si, in particular a mixture of SiH 4 and ethylene diluted in nitrogen, using a nozzle disposed above and transversely to float glass ribbon of a flat glass production line, in the float chamber, when the glass is still at a temperature of about 550 to 600 ° C.
  • the coating obtained has a thickness of about 50 nm and a refractive index of about 1.55.
  • 10 cm x 10 cm samples were cut from the float glass provided with its alkali-resistant SiOC underlayer thus obtained; these samples are washed, rinsed, dried and subjected to UV ozone treatment for 45 min.
  • a mesoporous structure coating is formed on the underlayer.
  • the liquid treatment composition is obtained by mixing in a first step 22.3 ml of tetraethoxysilane, 22.1 ml of absolute ethanol, 9 ml of HCl in demineralized water (pH 1, 25) until the solution becomes clear, then placing the flask in a water bath at 60 ° C. for 1 h.
  • a solution of a polyoxyethylene-polyoxypropylene block copolymer sold by BASF under the trade name Pluronic PE6800 (molar mass 8000), in proportions such that the molar ratio PE6800 / Si 0, is added to the soil obtained above. , 01.
  • Pluronic PE6800 molar mass 8000
  • the deposit is done by spin coating in a starting amount of 3 ml per sample. (Other equivalent deposition techniques are dip coating, spraying, laminar coating, roll coating, flow coating ...)
  • the samples are then subjected to the following annealing treatment:
  • the pores of the coating thus formed have a size of 4-5 nm.
  • a comparative study is made of the adhesion under dynamic conditions under ultraviolet irradiation of a bacterial culture on glass provided with the single SiOC layer, and on glass provided with the SiOC layer coated with the TiO 2 layer formed as described above.
  • a lamp characterized by the wavelength of 312 nm and a power of 100 W / m 2 is used .
  • the bacterium is Staphylococcus epidermidis (ATCC 12228), distributed by American type culture collection. The strain kept in freeze-dried form was resuspended in 9 ml of TSB (trypto-case soy broth) and incubated for 15 hours at 37 ° C., then the cultures were divided into cryotubes supplemented with glycerol (15%) and stored at -80 ° C. 0 C (main stock).
  • subculture is carried out from the main stock in 200 ml of TSB.
  • the broth is then incubated at 37 ° C. After 24 hours, 15% glycerol is added to protect the bacteria.
  • the suspension obtained is then distributed in the tubes
  • OD optical absorbance
  • the medium used in the various experiments is physiological water (0.15M NaCl solution or water ⁇ ) or diluted 100 times (0.0015M NaCl solution or ⁇ -2 water).
  • the culture R3 is centrifuged 3 times 10 minutes at 7000 g at a temperature of 40 ° C.
  • the pellet is resuspended either in water ⁇ , or in water ⁇ -2 according to the techniques used (MATS, electrophoretic mobility, adhesion under static / dynamic conditions, etc.).
  • the bacterial concentration is adjusted to a value of OD (in absorption).
  • the suspension is diluted so as to always have the same value of OD.
  • the method of counting viable cells or counting on a solid medium is used.
  • the tests in dynamic conditions make it possible to follow the kinetics of the bacterial adhesion process on the solid surface.
  • the support is placed in a dynamic adhesion cell.
  • the laminar regime unlike the turbulent regime, does not favor surface-microorganism impacts.
  • the bacterial adhesion in this case does not depend on the flow conditions, but on the properties of the surfaces themselves and the suspending liquid.
  • the adhesion of microorganisms to the glass surface is monitored using a microscope (Leica, x10 objective). Every 10 minutes, an image is taken. By a computer analysis of it, it is possible to determine the percentage of recovery of each image and thus build a curve which represents the percentage of coverage of the surface by the bacteria as a function of the contact time.
  • TiO 2 glass becomes more hydrophilic. A circulation of water can thus unhook the bacterial cells in particular dead from the surface of the TiO 2 glass more effectively than from the surface of the bare glass.
  • this example demonstrates the self-cleaning property of TiO 2 glass vis-a-vis the bacteria tested. This layer is therefore indicated for applications of at least partial destruction, or stop the development of microorganisms, especially indoors.
PCT/FR2006/050319 2005-04-11 2006-04-10 Substrat microbicide WO2006108985A1 (fr)

Priority Applications (4)

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GB0720323A GB2442364A (en) 2005-04-11 2006-04-10 Microbicidal substrate
JP2008505937A JP2008538305A (ja) 2005-04-11 2006-04-10 殺菌性基体
DE212006000030U DE212006000030U1 (de) 2005-04-11 2006-04-10 Mikrobizides Substrat
US11/911,270 US8349445B2 (en) 2005-04-11 2006-04-10 Microbicidal substrate

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR0550921A FR2884147B3 (fr) 2005-04-11 2005-04-11 Substrat microbicide
FR0550921 2005-04-11
FR0552093A FR2884148B1 (fr) 2005-04-11 2005-07-07 Substrat microbicide
FR0552093 2005-07-07

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US7820296B2 (en) 2007-09-14 2010-10-26 Cardinal Cg Company Low-maintenance coating technology
US7862910B2 (en) 2006-04-11 2011-01-04 Cardinal Cg Company Photocatalytic coatings having improved low-maintenance properties
USRE43817E1 (en) 2004-07-12 2012-11-20 Cardinal Cg Company Low-maintenance coatings
US9738967B2 (en) 2006-07-12 2017-08-22 Cardinal Cg Company Sputtering apparatus including target mounting and control
US10604442B2 (en) 2016-11-17 2020-03-31 Cardinal Cg Company Static-dissipative coating technology

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WO2017042703A1 (en) 2015-09-07 2017-03-16 Sabic Global Technologies B.V. Lighting systems of tailgates with plastic glazing
EP3347220B1 (de) 2015-09-07 2021-04-14 SABIC Global Technologies B.V. Kunststoffglasuroberflächen von heckklappen
US10597097B2 (en) 2015-09-07 2020-03-24 Sabic Global Technologies B.V. Aerodynamic features of plastic glazing of tailgates
WO2017042699A1 (en) 2015-09-07 2017-03-16 Sabic Global Technologies B.V. Molding of plastic glazing of tailgates
CN108367702B (zh) 2015-11-23 2021-06-01 沙特基础工业全球技术公司 用于具有塑料玻璃的窗的照明系统

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Cited By (10)

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Publication number Priority date Publication date Assignee Title
USRE43817E1 (en) 2004-07-12 2012-11-20 Cardinal Cg Company Low-maintenance coatings
USRE44155E1 (en) 2004-07-12 2013-04-16 Cardinal Cg Company Low-maintenance coatings
US7862910B2 (en) 2006-04-11 2011-01-04 Cardinal Cg Company Photocatalytic coatings having improved low-maintenance properties
US9738967B2 (en) 2006-07-12 2017-08-22 Cardinal Cg Company Sputtering apparatus including target mounting and control
US7820296B2 (en) 2007-09-14 2010-10-26 Cardinal Cg Company Low-maintenance coating technology
US7820309B2 (en) 2007-09-14 2010-10-26 Cardinal Cg Company Low-maintenance coatings, and methods for producing low-maintenance coatings
US8506768B2 (en) 2007-09-14 2013-08-13 Cardinal Cg Company Low-maintenance coatings, and methods for producing low-maintenance coatings
US8696879B2 (en) 2007-09-14 2014-04-15 Cardinal Cg Company Low-maintenance coating technology
US10604442B2 (en) 2016-11-17 2020-03-31 Cardinal Cg Company Static-dissipative coating technology
US11325859B2 (en) 2016-11-17 2022-05-10 Cardinal Cg Company Static-dissipative coating technology

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GB2442364A (en) 2008-04-02
GB0720323D0 (en) 2007-12-05
DE212006000030U1 (de) 2008-02-21

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