EP4486707A1 - Vitrage à propriétés hydrophobes par libération par voie gazeuse de composés hydrophobes contenus dans un émetteur - Google Patents
Vitrage à propriétés hydrophobes par libération par voie gazeuse de composés hydrophobes contenus dans un émetteurInfo
- Publication number
- EP4486707A1 EP4486707A1 EP23711521.7A EP23711521A EP4486707A1 EP 4486707 A1 EP4486707 A1 EP 4486707A1 EP 23711521 A EP23711521 A EP 23711521A EP 4486707 A1 EP4486707 A1 EP 4486707A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- glazing
- hydrophobic compounds
- hydrophobic
- emitter
- glazing according
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL 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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL 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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
- C03C17/225—Nitrides
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL 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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
- C03C17/23—Oxides
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL 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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
- C03C17/30—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL 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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/42—Surface 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 of an organic material and at least one non-metal coating
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL 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
- C03C2217/00—Coatings on glass
- C03C2217/70—Properties of coatings
- C03C2217/76—Hydrophobic and oleophobic coatings
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL 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
- C03C2218/00—Methods for coating glass
- C03C2218/10—Deposition methods
- C03C2218/15—Deposition methods from the vapour phase
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL 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
- C03C2218/00—Methods for coating glass
- C03C2218/10—Deposition methods
- C03C2218/17—Deposition methods from a solid phase
Definitions
- the present invention relates to a glazing comprising a transparent substrate, in particular a glass article, the outer surface of which has been rendered hydrophobic by gaseous release of hydrophobic compounds contained in an emitter placed on the periphery of said substrate.
- the invention relates in particular to rainproof glazing for buildings, land, air or water vehicles, or street furniture.
- the hydrophobic properties are sought for windows and windscreens in the field of transport, in particular for motor vehicles and air vehicles, as well as for glazing in the building field.
- anti-rain properties are sought, the water stuck by the glazing and the areas upstream of the vehicle having to easily run off in the form of drops or streams on the glass wall to evacuate, for example when running under the effect of air and wind, in order to improve visibility and, therefore, safety, or to facilitate cleaning, easily remove frost, etc.
- a contact angle of a drop of water with the substrate is sought which is greater than 60° or 70° and preferably greater than 90°, the drop of water not having to be crushed or spread until continuous films are formed.
- a glazing is said to be functional as long as this angle is greater than 60° for aeronautics and 70° for automobiles.
- To render a glass substrate hydrophobic it is known to deposit on its outer surface hydrophobic compounds grafted with fluorinated silane type, as described in patent application US Pat. No. 4,983,459.
- these coatings tend to degrade over time due to the attacks that the glazing is constantly subjected to, such as: hydrolysis, photodegradation, sensitivity to impacts from atmospheric dust, sensitivity to electrostatic discharges, etc.
- these hydrophobic coatings of fluorinated silanes have short lifetimes, in particular in flight, for example of the order of 6 months when they are deposited on the windshield of an airplane for short-haul commercial use. It would be possible to increase the thickness of the hydrophobic coating on the surface of the glazings in order to increase their lifespan. This strategy is also implemented in the case of hydrophobic varnishes.
- these coatings are sensitive to scratches; which would also limit their lifespan and the general optical quality of the glazing would also be degraded. In addition, these visible scratches are generally not repairable and may require changing the glazing. Thus, coatings with thick functionalization (>100 nm) are therefore not to be considered in order to solve the aforementioned problems.
- a glazing comprising a transparent substrate, preferably a glazing for an air vehicle such as an airplane, having continuous hydrophobic properties and whose regeneration of the hydrophobic properties of said substrate is simple to implement.
- the inventors have sought to provide glazing with improved hydrophobic properties, in particular in their durability and their predictability, while retaining other properties such as resistance to mechanical stress (resistance to friction, abrasion, and wiping, etc.); resistance to climatic constraints (resistance to UVA and UVB, neutral salt spray, acid rain, etc.); and the preservation of the optical properties, in particular when the glazing is a glass article.
- the inventors have sought to use volatile hydrophobic compounds so that they can be applied continuously to the outer surface of the transparent substrate of a glazing, without maintenance intervention, in other words by continuous regeneration of the hydrophobic functions at the surface of said substrate.
- the object of the present invention is to provide a glazing (1) comprising a transparent substrate (S), the said glazing comprising, at the periphery of the substrate, at least one emitter (2) of hydrophobic compounds by gas; said at least one emitter being arranged to allow release of said hydrophobic compounds, and a fraction of said released hydrophobic compounds being capable of being deposited on the surface of said transparent substrate.
- Maintaining a quantity sufficient amount of hydrophobic compounds on the surface of the transparent substrate is thus improved according to the invention, by the generation of a flux of hydrophobic compounds emitted by the emitter, and being added to the natural fluxes, and/or by a specifically strong affinity between the surface of the substrate and the hydrophobic compounds.
- the emitters associated with the airflows at the surface of the transparent substrate continually ensure the regeneration of the surface in hydrophobic compounds and therefore an improved hydrophobic performance of the substrate. If necessary, regeneration of the emitters may be required either by replacing them or by recharging them with hydrophobic compounds.
- FIG. 2 and 3 schematically represent a glazing (1) according to the invention each comprising an example of substrate (S) and an emitter (2), the emitter (2) comprising in both figures at least one reservoir (20) in the form of a solid serving as an emitting surface;
- FIG. 4 schematically shows a glazing (1) according to the invention in which the transmitter (2) comprises a reservoir (20 ') and an emitting surface (21);
- FIG. 5a and 5b schematically represent a glazing (1) comprising an emitter (2) which comprises a reservoir (20 ') and an emitting surface (21) in the form of a membrane (210 ) or plate provided with at least one opening (212) respectively;
- FIG.6 schematically shows an example of glazing (1) according to the invention
- FIG. 7 and 8 schematically represent a glazing (1) according to the invention comprising a frame (3) in which the transparent substrate (S) is mounted, and the transmitter (2 ) is arranged at the level of the frame (3).
- the transparent substrate (S) of a glazing (1) according to the invention may comprise:
- the term “glass” is understood to mean an inorganic glass, in particular of the silico-sodo-lime, borosilicate or aluminosilicate type.
- the polymer can be chosen from polycarbonate (PC), poly(methyl methacrylate) (PMMA), polyurethane (PU) and poly(ethylene terephthalate (PET).
- the plies (S1, S2) are laminated or assembled by means of an insert (S3).
- This spacer (S3) may comprise one or more adhesive layers made of a polymeric material.
- Said polymeric material is preferably chosen from thermoplastic polyurethane (TPU), poly(vinyl butyral) (PVB), poly(ethylene-vinyl acetate) (EVA), silicones and ionomer resins.
- the glazing (1) is a laminated glazing whose substrate (S) comprises at least two plies (S1, S2) of glass bonded or assembled by means of intermediate adhesive layers (S3) of the thermoplastic polyurethane type. , poly(vinyl butyral) or poly(ethylene-vinyl acetate).
- the glazing is a laminated glazing whose substrate comprises at least one poly(methyl methacrylate) (PMMA) ply, preferably at least two PMMA plies bonded or assembled by means of intermediate adhesive layers as aforementioned.
- PMMA poly(methyl methacrylate)
- the glazing is a laminated glazing whose substrate comprises at least one polycarbonate (PC) ply, preferably at least two PC plies bonded or assembled by means of intermediate adhesive layers as mentioned above.
- PC polycarbonate
- glazing comprising at least one ply of poly(ethylene terephthalate (PET) and an adhesive layer of thermoplastic polyurethane (TPU) or poly(vinyl butyral) (PVB).
- PET poly(ethylene terephthalate
- TPU thermoplastic polyurethane
- PVB poly(vinyl butyral)
- the glazing (1) comprises a transparent substrate (S) and at least one emitter (2) of hydrophobic compounds via the gaseous route which is positioned at the periphery of said transparent substrate, as can be seen in FIGS. 1 and 2
- the term "transmitter” means a gas diffusion system. The emitter is therefore intended to produce/emit gases and to supply them to the transparent substrate and in particular to supply them to the layer capable of adsorbing hydrophobic compounds.
- the term "periphery” means the zone corresponding to the connection or to the interface between the transparent substrate and the structure on which the substrate is placed, either on the substrate side or on the structure, and preferably upstream of the air flows.
- the transmitter is positioned in the glazing - aircraft interface zone, either on the glazing side or on the aircraft side and upstream of the air flows sweeping the glazing in flight conditions.
- the glazing comprises an emitter which extends over the entire periphery of the substrate.
- the glazing comprises at least two emitters arranged to extend over the entire periphery of the substrate.
- the glazing comprises one or at least two emitters on the periphery of said substrate but which does not extend(s) over the entire periphery of the substrate.
- the emitter according to the invention can have a linear geometry, for example in the form of a strip or a slot, or be made up of several point emission sites, for example in the form of holes. Furthermore, the emitter can be integrated into the transparent substrate or integrated into the structure carrying the transparent substrate.
- said transmitter (2) according to the invention comprises at least one reservoir (20) in the form of a solid serving as an emitting surface, as can be seen in Figures 2 and 3.
- Said reservoir (20) can then be flush and/or uneven with the surface of the transparent substrate of the glazing, and can comprise:
- At least one pure hydrophobic compound or several mixed hydrophobic compounds preferably in solid form.
- the emission of the hydrophobic compounds takes place by sublimation on the external surface of the substrate, i.e. on the surface of the substrate exposed to the air, the emission thus being able to be amplified by the convections of the air;
- the polymeric matrix can comprise a polymer chosen from polysulphides, epoxies, polyurethanes, silicones and rubbers.
- the hydrophobic compound(s) solubilized and/or dispersed in said polymeric matrix are in the form of solid grains or droplets which diffuse into said matrix, then the hydrophobic compounds are desorbed and emitted in the gaseous phase on the external surface of the substrate.
- the polymeric matrix makes it possible to protect the hydrophobic compounds which, without encapsulation by said matrix, could at least under certain conditions of use flow when they are in the liquid state at high temperatures of use.
- the polymeric matrix also makes it possible to protect the hydrophobic compounds from dissolution by certain fluids, by erosion, by rain or dust, or
- said transmitter (2) comprises a reservoir (20') and an emitting surface (21), said reservoir (20') being a volume communicating with said emitting surface (21), as this is visible in Figure 4.
- the tank (20 ') and the emitting surface (21) of the emitter (2) are separated.
- the volume of said reservoir can then comprise at least one hydrophobic compound found:
- a reservoir (20') comprising at least one hydrophobic compound in liquid form
- said reservoir may also comprise compounds without hydrophobic properties such as solvents or solid fillers.
- elements such as fibers or powders or porous particles can be added to the tank to prevent the flow of liquid compounds by capillary mechanisms.
- the reservoir (20') is thus designed to allow the transport of hydrophobic compounds in liquid form by direct contact, towards the emitting surface (21) which is flush with the outer surface of the substrate.
- the emitting surface (21), according to the invention may comprise:
- the emitting surface (21) comprises at least one membrane (210), as shown in FIG. 5a.
- the membrane according to the invention may consist essentially of at least one polymer chosen from polysulphides, polyurethanes, polyvinyl chlorides, and rubbers.
- the membrane is advantageously solid; thus being able to be a permeation membrane.
- the use of a membrane as an emitting surface allows the emission of hydrophobic compounds by absorption on the side of the tank, then diffusion in the membrane then desorption and emission of said hydrophobic compounds in the gas phase on the side exposed to the outside air of the substrate (called the external face or external face of the substrate), which has the advantage of better controlling or regulating the release in the gas phase of the hydrophobic compounds towards the external surface of the substrate.
- the emitting surface (21) comprises at least one plate provided with at least one opening (212), as shown in Figure 5b or in Figure 6.
- This plate may be a metal plate pierced by a or several slots or through a multitude of holes. These slots or openings may all be the same or there may be openings or slots of different sizes, shapes.
- the emitting surface (21) comprises at least one membrane (210) according to the first alternative and at least one plate (212) according to the second alternative.
- the transmitter (2) may comprise a protective layer of the emitting surface (21), said protective layer being made of a porous material.
- the porous material is a material chosen from among ceramics, metallic foams, sintered glasses and polymeric foams.
- the emitting surface (21) comprises at least one membrane (210) or a membrane (210) and a plate provided with at least one opening (212)
- said porous material is placed above the membrane , which itself can cover the openings of the plate if necessary.
- the purpose of this protective layer is then to protect the membrane from the abrasive external environment, and this without hindering the gaseous transport of hydrophobic compounds.
- the emitting surface (21) comprises at least one plate provided with at least one opening (212)
- said porous materials can cover said openings of the plate, being able to serve as a "plug" for the filling in hydrophobic compounds.
- the filling can be done with liquid hydrophobic compounds by pouring them directly into the porous material (which can have the function of a wick). The plug(s) can then be accessible without having to remove the glazing.
- said emitter (2) when the reservoir (20') comprises at least one hydrophobic compound in liquid form, said emitter (2) may further comprise at least one channel (22) connecting the emitting surface to the reservoir, as shown in Figure 8. This allows the emitter to include a larger sized reservoir in order to be able to store a larger amount of liquid hydrophobic compounds.
- the transmitter can also comprise a means of diffusion making it possible to supply the entirety of the emitting surface.
- This diffusion means can for example take the form of a cavity to which the entire emitting surface and the channel are connected.
- the emitting surface (21) can extend particularly over the entire periphery of the transparent substrate, and more preferably over all or part of the length of the bottom upright of the glazing (1) with a width of up to 3 cm.
- This emitting surface can also be partially up to one millionth of its surface in the event of emission by a few thin holes having a diameter of between 0.05 mm and 2 mm.
- the reservoir (20) or (20') can be in the form of a profile or a bulb or a parallelepiped or any other shape.
- the tank can essentially consist of a material chosen from elastomers such as rubber, thermoplastic polymers such as polyvinyl chloride, or metals such as steel or aluminum.
- the emitter according to the invention also performs the function of peripheral seal of a glazing commonly called "drop".
- the drop is in fact known to provide the glazing with aerodynamic continuity between the glazing and the mounting structure (such as the structure of an airplane), as well as good inertia for treatment fluids (such as aeronautical fluids, cleaners, degreaser, glycol for ground de-icing and the like); this drop can be polysulphide or equivalent.
- the glazing (1) may further comprise at least one heating means.
- the heating means(s) are preferably located in or around the emitter (2) so as to allow heating by thermal conduction: of the tank (20) or (20'), of the surface emitter (21) and, where appropriate, any elements allowing the transport of hydrophobic compounds from the reservoir to the emitting surface, such as channels (22) or tubes.
- the heating can be obtained by means of resistive wires, or resistive layers.
- the heating means(s) can in particular be placed directly opposite the emitter.
- the heating means can be positioned in the transparent substrate (S) of the glazing (1).
- the heating means is placed inside the laminate, preferably in contact with the glass ply located towards the outside.
- Said heating means may be in the form of a transparent conductive layer, typically based on ITO or based on wires of copper, nickel, iron and nickel alloys, or tungsten having a diameter between 20 p.m. and 40 p.m.
- the heating means are very useful. Indeed, convection and low pressures in flight conditions significantly accelerate the evaporation of hydrophobic compounds compared to ground conditions. However, on the contrary, the low temperatures encountered in flight significantly lower the partial pressures of the hydrophobic compounds and therefore the molecular fluxes via the gaseous route. This is why the heating means make it possible to optimize the preferential emission of hydrophobic compounds in the flight phases which tend to drive the compounds towards the glazing, compared to the emissions of hydrophobic compounds when the aerial vehicle is on the ground.
- the heating means can make it possible to avoid the obstruction of the emitter by frost.
- the glazing (1) may further comprise a frame (3) in which the transparent substrate (S) is mounted.
- the frame (3) can be a metal profile or a polymer seal.
- the frame is either an integral part of the vehicle, or the frame is, as mentioned above, an element in which the substrate is mounted and thus the assembly formed by the frame and the transparent substrate is then mounted in the vehicle.
- the frame (3) is used for the arrangement of the transmitter (2).
- the frame (3) can be arranged to carry the emitter (2), as can be seen in FIGS. 7 and 8, or be arranged so that the emitter is placed at the interface between the substrate and the frame. .
- the glazing (1) comprises a transparent substrate (S) and at least one emitter (2) of hydrophobic compounds by the gaseous route positioned at the periphery of the substrate; said at least one emitter being arranged to allow release of said hydrophobic compounds, and a fraction of said released hydrophobic compounds being capable of being deposited on the surface of said transparent substrate.
- “by gas” means the fact that the hydrophobic compounds are transported between the emitter and the glazing in gaseous molecular form, subjected to the phenomena of entrainment by air flows and diffusion in a gaseous medium.
- the emitter can comprise pure hydrophobic compounds or dilute hydrophobic compounds in cases where these hydrophobic compounds are solubilized and/or dispersed in a polymeric matrix or integrated in a porous matrix. Then, said hydrophobic compounds are: either exposed directly to the air (when the emitter comprises a reservoir in the form of a solid serving as an emitting surface), or transported to an emitting surface such as a membrane or a plate provided with openings (when the emitter comprises a reservoir and an emitting surface). Geometrically, the emission surface of the hydrophobic compounds can therefore take a multitude of forms.
- the emitting surface can be likened to an equivalent band characterized by an equivalent slot width generating the same flow of contaminants.
- the emitting surface generates a flux of hydrophobic compounds equal to or less than the flux that the same surface consisting essentially of pure compounds would emit.
- an emitting surface comprising an opening of 20 mm associated with a 10% diluted product is equivalent to an emitting surface with an opening of 2 mm for a pure compound.
- the emitting surface can be a strip placed on the periphery of the transparent substrate of a glazing or else one or more fractions (or piece(s)) placed on the periphery of the substrate, which also varies the vapor pressure of the compounds emitter hydrophobic.
- the emitting surface can be a strip placed on the periphery of the transparent substrate of a glazing or else one or more fractions (or piece(s)) placed on the periphery of the substrate, which also varies the vapor pressure of the compounds emitter hydrophobic.
- the hydrophobic compounds of the emitter preferably have a vapor pressure of between 10' 8 Pa and 1 Pa, more preferably between 10' 8 Pa and 10' 6 Pa for emitters having a large emission surface comprised between 10 mm and 30 mm, and advantageously between 10' 2 Pa and 1 Pa for emitters having a small emission surface comprised between 10 ⁇ m and 3 mm.
- These partial pressures are defined at a temperature between 20°C and 30°C, more preferably at a temperature equal to 25°C.
- This low vapor pressure adapted to the emission surface allows the hydrophobic compounds to be evaporated in a sufficiently high quantity to allow functionalization of the transparent substrate while being limited to minimize the consumption of hydrophobic compounds.
- the hydrophobic compounds are integrated into the flow of air which flows parallel to the transparent substrate of the glazing.
- the hydrophobic compounds can diffuse and in particular in the directions normal to the surface of the glazing, which causes some of the compounds to move away from the glazing and be lost, while some are redirected to the outer surface of the transparent substrate on which they can be adsorbed.
- a part or a fraction of the hydrophobic compounds released by the emitter condense on the surface of the glazing, giving it hydrophobic characteristics.
- hydrophobic compounds of the transmitter are preferably chosen from:
- R-COOH a carboxylic acid of formula (I): R-COOH in which R represents a linear, branched or cyclic, saturated or unsaturated, C4-C22 alkyl group, preferably R is an alkyl group of formula (A): CnH2n+i, where n is between 6 and 20, or
- the hydrophobic compounds are chosen from the carboxylic acids of formula (IA): CnH2n+i-COOH, in which n is between 7 and 19.
- the acid Preferred carboxylic acid is stearic acid (n is equal to 17) since this hydrophobic compound has the advantage of being inexpensive, without risk to health or the environment and is sufficiently volatile.
- the The preferred carboxylic acid is decanoic acid (n is equal to 9) since this hydrophobic compound has the advantage of being liquid, which allows easy refilling of the reservoir while remaining a harmless and inexpensive compound.
- the inventors have chosen hydrophobic compounds which are:
- the transparent substrate (S) of the glazing (1) may further comprise on its outer face at least one layer capable of adsorbing hydrophobic compounds.
- the outer face corresponds to the face of the transparent substrate facing the outside of a building or a vehicle.
- the layer capable of adsorbing hydrophobic compounds may comprise:
- lanthanide chosen from the list comprising lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu), or
- At least one oxide or nitride of a metal or of an alloy of at least two metals the metal being chosen from the list comprising scandium (Sc), yttrium (Y), titanium (Ti), zirconium (Zr) , hafnium (Hf), or
- the layer capable of adsorbing hydrophobic compounds consists essentially of a material chosen from cerium oxide (CeOx), gadolimium oxide (Gd), yttrium oxide (YOx), titanium oxide (TiOx), zirconium oxide (ZrOx) or hafnium oxide (HfOx).
- the following mixed oxides can be mentioned, such as TiYOx, HfYOx, HfZrOx, ZrYOx or GdYOx.
- the layers capable of adsorbing hydrophobic compounds according to the invention are deposited on the outer face of the transparent substrate by a physical vapor phase (PVD) or chemical vapor phase (CVD) process, such as sputtering, or by evaporation or by atomic layer deposition (ALD) or alternatively by a sol-gel type liquid route.
- PVD physical vapor phase
- CVD chemical vapor phase
- ALD atomic layer deposition
- the layers capable of adsorbing compounds can have a thickness of between 5 and 1000 nm, preferably between 6 and 200 nm, and more preferably between 7 and 30 nm.
- the inventors have found that at least one layer capable of adsorbing hydrophobic compounds placed on the outer face of the substrate makes it possible to promote the adsorption of hydrophobic compounds after diffusion and transport of the latter by means of air flows.
- the transparent substrate may further comprise on its outer face at least one additional layer which does not have the function of adsorbing volatile hydrophobic compounds.
- said additional layer may have electrical dissipative properties.
- Said additional layer can be placed above or below said at least one layer capable of adsorbing hydrophobic compounds.
- Said additional layer preferably consists essentially of a material chosen from tin oxide or indium-tin oxide.
- the glazing (1) according to the invention is advantageously used as rainproof glazing, and even more advantageously as building glazing, land, air or water vehicle, or street furniture, preferably as air vehicle cockpit glazing.
- the present application also relates to a process for hydrophobizing a glazing (1) as described above comprising the following steps:
- the glazing according to the invention allows, thanks to the emitter, its hydrophobization as well as the renewal of this hydrophobization over time. Indeed, the emitter associated with the air flows on the surface of the transparent substrate continuously ensures the regeneration of the surface in hydrophobic compounds and therefore an improved hydrophobic performance of the substrate.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Surface Treatment Of Glass (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2201737A FR3133056B1 (fr) | 2022-02-28 | 2022-02-28 | Vitrage à propriétés hydrophobes par libération par voie gazeuse de composés hydrophobes contenus dans un émetteur |
| PCT/FR2023/050269 WO2023161595A1 (fr) | 2022-02-28 | 2023-02-27 | Vitrage à propriétés hydrophobes par libération par voie gazeuse de composés hydrophobes contenus dans un émetteur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4486707A1 true EP4486707A1 (fr) | 2025-01-08 |
Family
ID=82693906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23711521.7A Pending EP4486707A1 (fr) | 2022-02-28 | 2023-02-27 | Vitrage à propriétés hydrophobes par libération par voie gazeuse de composés hydrophobes contenus dans un émetteur |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250162930A1 (fr) |
| EP (1) | EP4486707A1 (fr) |
| CN (1) | CN118922389A (fr) |
| FR (1) | FR3133056B1 (fr) |
| WO (1) | WO2023161595A1 (fr) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2605192A (en) * | 1944-06-07 | 1952-07-29 | Thomas P May | Rain repellent coating composition |
| US2612458A (en) * | 1945-03-07 | 1952-09-30 | Honorary Advisory Council Sci | Method and composition for rendering window surfaces water repellent and product resulting therefrom |
| US2962390A (en) * | 1955-08-18 | 1960-11-29 | Jacob M Fain | Rain repellent compositions, method of application and base coated therewith |
| US3231196A (en) * | 1963-12-26 | 1966-01-25 | Boeing Co | Rain repellent application system for an aircraft windshield |
| US5328768A (en) | 1990-04-03 | 1994-07-12 | Ppg Industries, Inc. | Durable water repellant glass surface |
| US4983459A (en) | 1990-04-03 | 1991-01-08 | Ppg Industries, Inc. | Chemically reacted glass surface |
| DE4132652C2 (de) * | 1991-10-01 | 1995-04-27 | Flachglas Ag | Verfahren zur Herstellung einer einfachgekrümmten oder einer doppeltgekrümmten Verbundglasscheibe, insbesondere für Kraftfahrzeuge |
| FR2746811B1 (fr) | 1996-04-02 | 1998-04-30 | Saint Gobain Vitrage | Composition pour un revetement non-mouillable, procede de traitement d'un vitrage a l'aide de la composition et produits obtenue |
| FR2866643B1 (fr) | 2004-02-24 | 2006-05-26 | Saint Gobain | Substrat, notamment verrier, a surface hydrophobe, avec une durabilite amelioree des proprietes hydrophobes |
-
2022
- 2022-02-28 FR FR2201737A patent/FR3133056B1/fr active Active
-
2023
- 2023-02-27 WO PCT/FR2023/050269 patent/WO2023161595A1/fr not_active Ceased
- 2023-02-27 EP EP23711521.7A patent/EP4486707A1/fr active Pending
- 2023-02-27 US US18/841,939 patent/US20250162930A1/en active Pending
- 2023-02-27 CN CN202380023942.9A patent/CN118922389A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN118922389A (zh) | 2024-11-08 |
| US20250162930A1 (en) | 2025-05-22 |
| FR3133056B1 (fr) | 2025-02-21 |
| FR3133056A1 (fr) | 2023-09-01 |
| WO2023161595A1 (fr) | 2023-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1132351B1 (fr) | Substrat à revetement photocatalytique | |
| EP1144327B1 (fr) | Vitrage a revetement mesoporeux fonctionnel, notamment hydrophobe | |
| EP1102825B1 (fr) | Composition de traitement hydrophobe, procede de formation d'un revetement et produits munis de ce revetement | |
| KR101485891B1 (ko) | 다공성 층, 그 제조 프로세스와 응용 | |
| EP2385932B1 (fr) | SUBSTRAT HYDROPHOBE COMPRENANT UN PRIMAGE DU TYPE OXYCARBURE DE SILICIUM ACTIVE PAR PLASMA, PROCéDé DE FABRICATION ET APPLICATION DE CE SUBSTRAT | |
| EP3089948B1 (fr) | Vitrage lumineux avec isolateur optique et sa fabrication | |
| EP3089871A1 (fr) | Vitrage lumineux avec isolateur optique et sa fabrication | |
| WO2007144536A1 (fr) | Procede de depot par plasma atmospherique d'un revetement hydrophobe/oleophobe a durabilite amelioree | |
| WO2020190441A1 (fr) | Revêtement hydrophobe et glaciophobe | |
| CN1946646B (zh) | 具有疏水表面和改进疏水性能耐用性的基材,特别是玻璃基材 | |
| FR3012363A1 (fr) | Element en couches transparent | |
| WO2008132368A2 (fr) | Dispositif de visualisation tete haute | |
| EP4085283A1 (fr) | Vitrage feuilleté de véhicule et dispositif avec système de vision proche infrarouge associé et sa fabrication | |
| JP2005028225A (ja) | 光触媒材料 | |
| FR3069660A1 (fr) | Dispositif electrocommandable a diffusion variable par cristaux liquides. | |
| WO2024089161A1 (fr) | Vitrage feuillete illuminable de vehicule et vehicule avec un tel vitrage | |
| EP2509923B1 (fr) | Substrat hydrophobe comprenant un double primage et procede de fabrication | |
| FR3045034A1 (fr) | Vitrage de controle thermique muni d'un film polymere protecteur | |
| WO2023161595A1 (fr) | Vitrage à propriétés hydrophobes par libération par voie gazeuse de composés hydrophobes contenus dans un émetteur | |
| JP5343271B2 (ja) | 撥水撥油防汚性ガラス板とその製造方法及びそれを用いた自動車と電磁調理器 | |
| JPH0812375A (ja) | 撥水性物品及びその製造方法 | |
| CA3120332A1 (fr) | Vitrage feuillete a element en gradin peripherique en materiau polymere ayant une permeabilite a la vapeur d'eau maximale requise | |
| EP4608646A1 (fr) | Vitrage feuillete illuminable de vehicule et vehicule avec un tel vitrage | |
| EP3737651A1 (fr) | Système pour l'atténuation du chauffage solaire | |
| JP2014114455A (ja) | 撥水撥油性複合膜形成溶液とそれを用いた撥水撥油性複合膜の製造方法とその方法を用いて製造した撥水撥油性複合膜 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20240930 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SAINT-GOBAIN SULLY |