EP1909971A2 - Substrat comprenant au moins une couche macrostructuree sur toute ou une partie de la surface, son procede de production et son utilisation - Google Patents

Substrat comprenant au moins une couche macrostructuree sur toute ou une partie de la surface, son procede de production et son utilisation

Info

Publication number
EP1909971A2
EP1909971A2 EP06776219A EP06776219A EP1909971A2 EP 1909971 A2 EP1909971 A2 EP 1909971A2 EP 06776219 A EP06776219 A EP 06776219A EP 06776219 A EP06776219 A EP 06776219A EP 1909971 A2 EP1909971 A2 EP 1909971A2
Authority
EP
European Patent Office
Prior art keywords
sol
layer
substrate
gel
gel solution
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.)
Granted
Application number
EP06776219A
Other languages
German (de)
English (en)
Other versions
EP1909971B1 (fr
Inventor
Jörg Schumacher
Inka Henze
Todd Gudgel
Gabriele RÖMER-SCHEUERMANN
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.)
Schott AG
Original Assignee
Schott AG
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 Schott AG filed Critical Schott AG
Publication of EP1909971A2 publication Critical patent/EP1909971A2/fr
Application granted granted Critical
Publication of EP1909971B1 publication Critical patent/EP1909971B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
    • B05D1/322—Removable films used as masks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/02—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a matt or rough surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/40—Distributing applied liquids or other fluent materials by members moving relatively to surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/02—Doors specially adapted for stoves or ranges
    • F24C15/04—Doors specially adapted for stoves or ranges with transparent panels
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]

Definitions

  • Substrate comprising at least one fully or partially macrostructured layer, process for their preparation and their use
  • the invention relates to a substrate comprising at least one fully or partially macrostructured layer, processes for their preparation and their use.
  • sol-GeI sol-gel layers
  • the sol-gel solutions used have different viscosities. Often, however, this is in the order of magnitude of aqueous solutions and is therefore very low.
  • the application of the layers takes place over the entire surface using common Application methods, such as dipping, flooding, spraying, spraying, pouring, brushing, rolling or spinning. As a rule, the layers are cured by a subsequent tempering step.
  • a method for producing a sintered structure on a substrate wherein a particle-containing liquid, such as a sol-gel solution, applied by an inkjet printer to a substrate and evaporated the liquid applied by means of a laser pulse and so layered a sintered structure is built.
  • a particle-containing liquid such as a sol-gel solution
  • WO 02/17347 A1 discloses a method for solidifying and structuring a sol-gel composition on a surface of a substrate, wherein a layer of a sol-gel composition is deposited on a surface of a substrate, an electron beam is irradiated onto selected areas of the substrate. GeI film is set to cure the SoI-GeI-FiIm and the non-cured areas are removed with a solvent again.
  • EP 0 329 026 A1 relates to an ink-jet ink and printing method, wherein the ink comprises 90 to 99.9% by weight of an aqueous sol-gel medium, preferably a mixture of carrageenan and water, and 0.1 to 10% by weight of a coloring agent, and the ink represents a thermally reversibly convertible sol-gel ink which is a gel at ambient temperature and at temperatures between about 40 0 C and 100 0 C represents a sol.
  • the ink is applied to the substrate as a sol, where it forms a gel upon cooling.
  • the substrate used is almost exclusively paper into which the ink penetrates.
  • US Pat. No. 5,970,873 relates to an imaging process comprising imagewise applying a mixture of a sol precursor and a liquid as a thin layer to a substrate and removing the liquid from the thin layer to imagewise form an insoluble, crosslinked, polymeric solubilizer.
  • an imaging element made by the process such as a lithographic printing plate, will also be described.
  • the image area created in the sol-gel matrix therefore serves as a "negative" to which ink is applied, which is then transferred to a suitable receptor material to reproduce the image.
  • WO 99/33760 discloses a method of providing an article with visually-visible patterns wherein first at least a surface area of a substrate is masked, then at least one thin layer is applied to the masked and unmasked areas of the surface and the mask is removed to remove the mask to create desired patterns.
  • the article produced therewith has at least a first portion carrying a generally transparent thin film selected from metal-containing, semi-metal-containing coatings and combinations thereof, which when viewed under reflected light exhibits a first color and exhibits a second color under light passing therethrough , as well as a second section, visibly different in contrast to the first.
  • the SoI-GeI technology is mentioned, but no explanation is given how this can be done.
  • DE 100 19 822 A1 describes a lift-off method for microstructuring thin layers, wherein a mask is applied to a substrate is applied, which contains recesses at the points to be coated, a SoI is applied over the entire surface of the substrate covered with the mask, the SoI-FiIm cured, the mask removed together with the present on the mask surface hardened SoI and the hardened SoI-FiIm by Supplying energy is converted to the desired solid state.
  • a micro-frosted thin film device manufactured by this method such as a semiconductor device.
  • the present invention is based on the object, in a development of the prior art, to provide a flexible, non-expensive and cost-effective method by means of which structures can be produced on a substrate in a simple manner. In particular, it should be possible to provide any substrate with a desired structure.
  • a substrate comprising at least one fully or partially macrostructured layer obtainable by a method (a):
  • the invention also provides 3 process variants for the production of the substrate according to the invention, which according to variant (a) has the following steps: ,
  • process according to the invention according to process variant (b1) comprises the following steps:
  • the process variant (b2) according to the invention has the following steps:
  • Sol-gel layer (2) applying a resist to the sol-gel layer, either already in structured form or creating a structure in the resist after application;
  • step (1) Optional stoving of the patterned, dried sol-gel layer to give a cured sol-gel layer unless already done in step (1).
  • the present invention accordingly comprises substrates having a structured
  • a sol-gel solution is used.
  • structure is to be construed as broad as possible according to the invention and includes, for example, a pattern, logo, image (s), words, a mark, hatching, marking, inscriptions, in one or more defined optical manifestations, functionalities or the like be provided over the entire surface or only part of a surface on a substrate.
  • sol-gel system i. a sol which forms a thin, preferably transparent, gel film after drying, which preferably hardens by baking / tempering.
  • sol-gel layer in the present invention is intended to represent a layer prepared by a sol-gel method.
  • nanosols can be used.
  • the average particle diameter of such sols is in the range ⁇ 800 nm, preferably ⁇ 200 nm, particularly preferably ⁇ 100 nm. 06856
  • the sol-gel layer is based on one or more metal oxides and is preferably selected from at least one titanium, zirconium, silicon, aluminum, tin, boron or phosphorus oxide or mixtures thereof. Particular preference is given to containing silicon oxide, but other or further ones may also be used
  • Metal oxides are present.
  • metal also the semimetals, such as silicon and germanium, understood.
  • sol-gel solutions for example, so-called classic sol-gel solutions are used according to the invention in addition to a suitable amount of desired additives, a metal oxide precursor, a solvent, a minor amount of water for precondensation and a catalyst (acid or base).
  • colloidal metal oxide solutions solutions of nanoscale metal oxide powders in water or other solvents are used, in some cases, classical sol-gel solutions are additionally mixed with nanoscale metal oxide powders an aqueous / organic solvent, such as, for example, ethanol or acetone
  • Sol-gel solutions which are long-term stable can also be stored in purely organic solvents
  • These sols are clear and stable solutions with solids contents generally in the range from about 1 to about 30% by weight. %. The metal oxide contents but can also be significantly higher.
  • the sol-gel matrix can also be modified chemically in any manner by co-hydrolysis or co-condensation. These modifications are the
  • sol-gel coating can be carried out directly in structured form according to process variant (a) according to the invention using various printing techniques.
  • digital, tampon and gravure printing are to be mentioned, since they are particularly well suited for the processing of low-viscosity liquids.
  • the sol-gel solution which is converted to the sol-gel layer can be applied directly in structured form:
  • Structured liquid coatings can generally be applied to the substrate using known printing technologies, but so far this has not been known for sol-gel solutions used to make functional layers.
  • Conventional sol-gel solutions dry very quickly, which can cause great difficulties in printing techniques. Without a modification of the solution, especially the solvents, many methods are unusable because the coating reacts on the transfer medium or in the printing nozzles. It is important that no / hardly any condensation reactions take place during the printing process.
  • the present invention now provides ways in which - in contrast to the prior art - known printing technologies can be used, whereby the above problems are minimized or completely avoided.
  • sol-gel solutions tailor-made for the special printing technology, which includes, for example, a modification of the viscosity of the solution and / or a suitable choice of the solvent, makes it the first time hitherto unavailable printing technologies accessible.
  • a highly viscous sol-gel solution can be used for screen printing. In digital printing, however, it is desirable if the solution is low viscosity.
  • sol-gel solutions generally have a comparatively low viscosity
  • the digital, tampon and intaglio printing are suitable for the production of structured coated articles.
  • the application of the sol-gel solution in already structured form according to the process (a) according to the invention is therefore carried out on the substrate, preferably with a low-viscosity sol-gel solution using a known printing process.
  • low viscosity is meant in the present invention, a viscosity in the range of about 0.1 to about 10 4 mPa s.
  • the airbrush (resolution 42 dpi) and the ink-jet technology (resolution around 1400 dpi) prove to be particularly suitable.
  • the piezoelectric technique is preferred, since the sol-gel solutions are exposed here in contrast to the bubble variant no temperature stresses that can lead to the curing of the sol.
  • only one sol-gel solution is generally required according to the invention for the production of functional layers.
  • structured layers in particular substrates with structured layers, for example decorative color layers, are to be produced on a sol-gel basis, preferably also pigment-filled layers are used
  • Color formulations which contain a sol-gel solution, for example as a binder.
  • a sol-gel solution for example as a binder.
  • thickening additives are, for example, cellulose, cellulose ethers, starch, aerosils (pyrogenic silicas), bentones, hydrophobically modified polyoxyethylenes, acrylates, polyurethanes, polyamides, polyolefins, Castor oil and basic sulphonates.
  • thickening additives are added and a highly viscous, sufficiently thixotropic sol-gel solution is obtained, the application of the structured coating is also possible by means of screen printing or other printing techniques, such as offset, pad and pad printing.
  • a "high-viscosity”, “sufficiently thixotropic” sol-gel solution is understood here to mean that the viscosity-in the absence of shear forces-is above a limit of about 10 3 mPa s, in particular about 10 4 to 10 6 mPa s.
  • Thixotropy refers to the property of a non-Newtonian fluid to exhibit a lower viscosity after shearing and to rebuild at rest.
  • the sol-gel layer can be applied over the entire surface of the substrate and subsequently structured in further working steps:
  • these can be applied directly to the substrate as positive coatings at the points of the layer to be structured (process variant (b1) according to the invention).
  • a printable topcoats used.
  • the application of the Abdecklacks can already be done preferably in a structured form.
  • a photoresist is used.
  • the structuring can also take place after a full-area application of the photoresist in a second step with the aid of an exposure step and subsequent removal of the areas not to be lacquered. Subsequently, the full surface coating of the prepared substrate is carried out using the sol-gel solution.
  • (screen) printable paints is preferred over that of photo-resists because they are significantly less expensive and their application is associated with a significantly lower cost.
  • solvent or dispersant or solvent mixture suitable for such a process can be used as solvent or dispersant for the sol-gel solution of all processes according to the invention.
  • examples are water and alcohols, for example ethanol, or alcohol-water mixtures.
  • alcohols for example, alcohols, but also aprotic solvents, such as dioxane, or aqueous solvents can be used.
  • the sol-gel layers applied according to the invention which are used in process variants (b1) and (b2) according to the invention, preferably have layer thicknesses in the range from 1 nm to 100 .mu.m, preferably 1 nm to 1 .mu.m, in particular 1 to 200 nm.
  • the (preferred) layer thicknesses vary greatly. If only a few monolayers are deposited on the substrate in the case of an easy-to-clean layer, ie the layer thickness moves here in the nm range, then it may be preferred if pigment-filled, decorative sol-gel layers are opaque. This is achieved, for example, with layer thicknesses of at least 10 ⁇ m or significantly higher.
  • a fully or partially coated layer is to be applied, it is preferably applied by a spraying or dipping method, wherein all other methods known to the person skilled in the art can also be used, for example spinning, roll coating (rolling), brushing, casting or knife coating ,
  • drying according to process variant (b1) is preferably carried out in a temperature range from room temperature (25 ° C.) to 300 ° C. until substantially all the solvent has been removed, the solvent of the sol-gel solution being water, alcohol, all known to the person skilled in the art , in particular common, preferably halogen-free, low (boiling point: up to 120 0 C) and high-boiling solvents (boiling point: 120 to 250 0 C) and mixtures thereof are preferred.
  • the drying time is generally in the range of a few minutes to 1 or more days.
  • the quality of the layers formed in this way is sufficient, so that no further production step is required for baking. It is not possible to specify preferred drying times since these can be very different depending on the application.
  • a "burn-in" means that the dried sol-gel layer is converted into its final form by chemical reaction, sintering and / or excitation of diffusion processes Layer for a period of 10 minutes to 3 hours a temperature in the range between room temperature and 800 0 C, preferably between 250 and 800 0 C. exposed.
  • Coating lacquers generally can not be exposed to the temperatures necessary for curing the sol-gel layers, so that they are removed before stoving.
  • Baking has the advantage that the mechanical and chemical resistance of the layer increases drastically. In some cases, the layer only gets its actually desired function by the burn-in. The coated article in these cases can be used only after the baking step in the respective application.
  • Burning in can also specifically influence certain properties of the layer.
  • the optical antireflection depends on SiO 2 -Ti ⁇ 2 -Wechsel Anlagensystemen (anti-reflection) but also on the refractive indices of the respective, present in the layer packet from individual layers. This in turn is structurally dependent.
  • the chemical structure varies depending on the choice of baking conditions.
  • the anti-reflection effect of such coating systems depends crucially on the conditions during the penetration of the layers.
  • the sol-gel layer is preferably already converted into its final form, so that further post-treatment steps are not necessary.
  • microstructures are produced in the present invention that can be used, for example, in semiconductor components, and become visible to the naked eye, for example, only under a microscope.
  • macrostructured regions for example coarse-structured, optionally large-area regions, are produced. This means that structures in the order of up to a minimum of about 50 to 100 microns (corresponding to about the width of a hair) can be made, so that always visible to the eye structures are produced.
  • a transfer of such Microstructures on macrostructures would not be considered by a person skilled in the art due to the well-known special status of semiconductor technology.
  • the masking resist as a negative resist to a substrate which is already provided with the sol-gel layer over its entire area (inventive ' process variant (b2)).
  • the evaporation of the solvent or drying according to process variant (b2) is preferably carried out in a temperature range from room temperature to max. 200 0 C until essentially all of the solvent has been removed, being used as the solvent of the sol-gel solution, water, alcohol, all known in the art, especially common, preferably halogen-free, low (boiling point: up to 120 0 C) and high-boiling solvent (Boiling point: 120 to 250 ° C) and mixtures thereof are preferred.
  • the drying time is generally in the range of a few minutes to 1 or more days. Because of the diversity of the layers to be produced, the above information is only exemplary.
  • the patterning of the resist can advantageously be effected by means of suitable (screen) printing methods, i. Applying the resist in structured form, or photolithographically, i. after application, done.
  • the sol-gel layer is then removed at the exposed locations, for example with a suitable chemical etching solution.
  • a suitable chemical etching solution may be, for example, an aqueous NaOH solution or an aqueous HF solution.
  • the covering is again mechanically, chemically or pyrolytically - as already described - removed.
  • the Abdecklack which is applied either in a structured form or structured after the order is not baked.
  • any known in the art paint can be used.
  • paint classes such as: topcoats, Peel-off lacquers, photostructurable lacquers (liquid resists, dry resists).
  • Usable commercially available products are, for example: covering lacquer 80 2039 (from Ferro), Wepelan covering lacquer SD 2154 E (Peters), stripping lacquer SD 2962 P (Peters), liquid resist AZ 9260 (from Clariant), liquid resist AZ nLOF 2070 (Clariant), dry resist EtchMaster ES-102 (DuPont) and dry resist Riston 220 (DuPont).
  • the sol-gel solution used according to the invention preferably contains further constituents selected from the group consisting of inorganic and / or organic dyes, pigments and / or additives, such as thickeners, dispersants, defoamers, anti-settling agents,
  • Additives can be used, for example, for the specific introduction of specific functionalities.
  • organic and / or inorganic dyes or pigments for example, additional color effects can be produced.
  • pigments are able to introduce further functionalities, such as IR or UV reflection, into the layer.
  • sol-gel solution which comprises or consists of the following components:
  • metal oxide from about 1 to about 80% by weight of metal oxide, metal oxide precursors or metals such as SiO 2 , alkoxysilanes, alkylalkoxysilanes, fluorinated alkylalkoxysilanes, TiO 2 , titanium alkoxides, colloidal silver or colloidal silver compounds,
  • solvents such as water, alcohols and all known in the art, especially common, preferably halogen-free, low (boiling point: up to 120 X) and high-boiling solvent (boiling point: 120 to 250 0 C);
  • catalyst such as concentrated hydrochloric, sulfuric or nitric acid or alkali such as sodium or potassium hydroxide
  • colorant component such as organic or inorganic colored pigments or organic dyes
  • additives such as thickeners, dispersants, processing aids, defoamers, deaerators, anti-settling agents, surface tension modifiers, lubricants and leveling agents, crosslinking additives, primers, etc.
  • the total amount of all components of the sol-gel solution naturally complements 100% by weight.
  • the substrate in the above method provided with one or more structures is not particularly limited in the present invention. Any type of material may be used, such as, for example, plastic, metal, wood, enamel, glass, ceramics, in particular glass-ceramic, preference being given to glass and glass-ceramic substrates.
  • alkali-containing float glasses such as borosilicate glasses (eg Borofloat 33, Borofloat 40, Duran from Schott AG, Mainz), as well as alkali-free glasses (eg AF 37, AF 45 from Schott AG, Mainz), aluminosilicate glasses (eg Fiolax, Illax from Schott AG, Mainz), alkaline earth glasses (eg B 270, BK 7 from Schott AG, Mainz), Li 2 O-Al 2 O 3 -SiO 2 -FlOaIgIaS, discolored float glass with an iron concentration below 700 ppm, preferably below 200 ppm , and in a more specific application soda-lime glasses, especially the latter being preferred.
  • display glasses such as D263 from Schott-DESAG, Grünenplan. In principle, all known technical and optical glasses can be used.
  • Typical glass ceramics which are used as alkali-containing glass-ceramics such as lithium aluminosilicate (LAS) glass-ceramics, such as CERAN ®, ® or ROBAX ZERODUR ® (all brands of Schott AG, Mainz), but also alkali-free glass ceramics, such as magnesium aluminosilicates (MAS) can be used.
  • LAS lithium aluminosilicate
  • CERAN ® ®
  • ROBAX ZERODUR ® all brands of Schott AG, Mainz
  • MAS magnesium aluminosilicates
  • the substrate is not particularly limited in the invention not only in terms of the material but also in terms of shape, so that, for example, flat, round, rounded large and small objects can be used. Preference is given to objects made of or with glass and / or glass ceramics of any shape, such as glass tubes, glass lenses, ampoules, carpets, bottles, cans, disks, plates or any shaped parts.
  • an optionally surface-treated substrate as well as a substrate already provided with a layer, for example a surface-treated or already coated glass.
  • the substrate is provided at least on a part of its surface with a macrostructure according to the present invention.
  • the entire surface may also be structured or the structure may be present on multiple parts of one or more surfaces.
  • the structure can be applied, for example, on one or both sides, according to the shape of a substrate also on several sides.
  • substrates tiles, enamel parts, panes, in particular viewing panes, plates, panels, glazings of all kinds, shower enclosures, covers, work and cooking surfaces, as part of refrigerators or freezers, dining or drinking utensils, containers, Fire protection windows, fireplace panes, oven panes as a glass cover for solar energy systems, medical glass, especially a Med ikamentenf tabs, windows or covers for displays, a component of hi-fi or computing or telecommunications equipment and the like. It goes without saying that in addition to single layers and multi-layer systems can be used to produce a desired macrostructure.
  • the invention also relates to the partially or completely macro-structured layers produced according to the invention.
  • These can be used, for example, in the form of functional layers, i. the partial or full-surface structured layer has one or more specific functions or properties.
  • functional layers structured according to the invention are anti-reflection layers, color layers, decorative layers, photocatalytic layers, antimicrobial layers, anti-virus layers, anti-mold layers, anti-fungicidal layers, anti-algae layers, anti-fogging layers, Cleaning layers, odor neutralization layers, anti-fingerprint layers, air cleaning layers, or combinations thereof.
  • substrates according to the invention comprising a fully or partially macrostructured layer
  • examples include:
  • Tiles such as ceramic, enamel or glass tiles; - Enamel parts, especially in oven muffles;
  • Glazings of all kinds especially windows, for example
  • Insulating glass doors for cabinets - Picture Frame
  • Covers for example for displays
  • Pool linings such as swimming pool coverings, fish breeding ponds
  • Mirrors for example retro-reflective traffic mirrors
  • - Walls in particular outer walls, for example of trains
  • Discs such as viewing windows, in particular oven panes, chimney and microwave viewing panes
  • Store window such as Boards, such as billboards
  • - Kitchen utensils such as cutting boards, for example made of glass, ceramic, plastic or wood
  • Shelves for example of glass, ceramic, plastic or metal; Cooking surfaces, for example glass ceramic cooking surfaces; Containers, such as baking cups; - Eating or drinking utensils, such as drinking glasses, and
  • Furnishings of ovens, dishwashers or refrigerators and freezers such as refrigerator shelves, compartments or drawers.
  • Household appliance a glass cover for solar energy systems, as a window of a dishwasher or a cookware, such as a steamer, as a fire or medical glass, such as drug bottles, for containers or pipes, such as coated container or pipe for dairy, as a window or cover for displays, part of hi-fi, computing or telecommunications equipment, for eating or drinking utensils, baby bottles, windows, optical lenses, laboratory glasses, in particular borosilicate glasses.
  • low-cost anti-reflective layers These can be made, for example, from a colloidal SiO 2 -SoI by dipping. The structuring of the layers takes place primarily in the
  • Glass reflections for the visible spectral range are, for example, AMIRAN or MIROGARD antireflective coatings from Schott AG. These are, for example, interference filters made of, for example, three layers
  • a 3- or 5-layer structure of low-refractive SiO 2 and high-index TiO 2 layers is preferably alternating.
  • Is preferably prepared from Si and Ti-containing sols by dipping.
  • Flat glass with these coatings is used, for example, as architectural glass or as glazing in picture frames.
  • the structuring of the layer system is preferably used for decorative purposes, such. B. the application of a logo.
  • the desired optical effect can be achieved by
  • Structuring of one or more layers of the system preferably the last layer of the system or by applying an additional layer in a structured form.
  • Another application example is a colored underside coating on a transparent glass ceramic: it is preferably produced starting from a pigment-filled sol-gel color.
  • the color is in principle adjustable with different viscosities, so that in addition to the methods already described for the application of low-viscosity sol-gel solutions, in particular spraying and casting, in suitable cases, the
  • Bottom-coated glass ceramics are used, for example, as cooking surfaces.
  • the structuring of the layers in this case serves the display capability as well as decorative purposes.
  • photocatalytic coatings are also possible: Examples are TiO 2 layers (anatase), made from a colloidal TiO 2 -SoI by dipping or spinning.
  • the layers have self-cleaning properties and therefore have a very wide range of applications: anti-bacterial, anti-virus, anti-mold, anti-fungicidal, anti-algae, anti-fogging, anti-fingerprint coating, odor neutralization,
  • Air purification, etc. are provided with photocatalytic layers floor tiles, fish tanks, reflecting traffic levels, outer walls of trains, architectural glass, etc.
  • the structuring of the layers in these contexts primarily to facilitate the installation of the coated
  • Anti-microbial coatings can also be provided according to the invention: These are preferably prepared from an Ag-containing, colloidal sol by immersion. Such coated components can be used in refrigerators. The structuring takes place here primarily at the edges and can facilitate the installation of the components into the system or be a necessary condition for this. In addition, the amount of the very expensive coating can be limited to the relevant areas.
  • easy-to-clean coatings For this purpose, surfaces of glasses and glass ceramics are modified, for example in a silanization reaction with longer, perfluorinated carbon chains. As a result, the surface acquires a hydrophobic character and is very easily cleaned by lowering the surface energy.
  • Components with easy-to-clean coatings are used mainly in "White goods” area and there primarily in ,, Warmest "applications (permanent load up to 300 0 C) are used. Concrete examples are: oven panes, baking dishes, cooking surfaces, etc.
  • the structuring of the layers has the purpose here, for example, the installation (for example
  • Gluing of the substrate / the components in the overall system to facilitate or even allow.
  • the advantages of the present invention are manifold:
  • the present invention provides a substrate and method for the same
  • Preparation taking advantage of the sol-gel technology, i. it can be wet-chemically provided at low cost and low cost structured coated substrates.
  • the substrates are not particularly limited, particularly preferred are glass and glass ceramics.
  • the sol-gel technology can be used in unexpected ways to produce almost arbitrarily structured substrates, although low-viscosity solutions can be used. Nevertheless, sharp and non-running structures are preserved.
  • the viscosity of the sol-gel solution can be adjusted in the desired manner, so that it is possible to work with low-viscosity as well as highly viscous sol-gel solutions, whereby the best results are achieved for the respective application.
  • sol-gel solution For structured application of the sol-gel solution can be known
  • the sol-gel method allows economic structuring of large areas, which can be used, inter alia, on aqueous systems, so that the applied structures release no toxic solvents, are completely inert and used safely indoors can be.
  • a suitable variant can be selected, whereby a high degree of flexibility is possible.
  • sol-gel fabricated structures are also the frequently obtained good mechanical thermal and photochemical stability, room temperature capability and, if desired, high spectral transparency.
  • Another advantage of such sol-gel layers in most cases is that they are not a food source for
  • the inorganic sol-gel structure to be produced in the cured state is a structure which is free of impurities. This is therefore also suitable for uses with food contact.
  • sol-gel method used according to the invention it is possible to produce thin, glassy, optionally colored, functional layers in great variety and structure. It is possible to create tailor-made structures related to specific applications.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • Cooking surface made of a transparent glass ceramic with a displayable, colored underside coating A displayable underside coating has recesses in those areas of the hob where electronic display panels and LEDs are located. The electronic display elements are thus better recognizable on the cooking surface.
  • the structuring of the coating is realized by first masking the hob at the desired locations with a resist.
  • a sufficiently viscous and thixotropic lacquer eg Wepelan Abdecklack SD 2154 E from Peters, Abziehlack SD 2962 P from Peters or Abziehlack 80 2039 from Ferro
  • TEOS tetraethoxysilane
  • Aerosil OX ⁇ O Pigments and fillers are stirred into the binder by means of a stirrer with dissolver disk.
  • the color is mixed with a further 43.0 g of n-propanol as the solvent.
  • pigment-filled sol-gel color is applied over the entire surface, for example by means of the spraying or casting process on the substrate and dried for sufficient time in the air.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
  • Paints Or Removers (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

L'invention concerne un substrat comprenant au moins une couche macrostructurée sur toute ou une partie de la surface. Ce substrat est obtenu par un procédé qui consiste (a): à appliquer une solution sol-gel sous forme structurée sur un substrat et à sécher et/ou à recuire la couche sol-gel obtenue; ou bien un procédé qui consiste (b): à structurer une couche sol-gel appliquée sur un substrat à l'aide d'une peinture de recouvrement. L'invention concerne également les procédés de production du substrat. La présente invention permet le revêtement d'un substrat quelconque par la technologie sol-gel.
EP20060776219 2005-08-03 2006-07-13 Substrat comprenant au moins une couche macrostructuree sur toute ou une partie de la surface, son procede de production et son utilisation Not-in-force EP1909971B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005036427A DE102005036427A1 (de) 2005-08-03 2005-08-03 Substrat, umfassend zumindest eine voll- oder teilflächige makrostrukturierte Schicht, Verfahren zu deren Herstellung und deren Verwendung
PCT/EP2006/006856 WO2007014631A2 (fr) 2005-08-03 2006-07-13 Substrat comprenant au moins une couche macrostructuree sur toute ou une partie de la surface, son procede de production et son utilisation

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EP1909971A2 true EP1909971A2 (fr) 2008-04-16
EP1909971B1 EP1909971B1 (fr) 2010-10-06

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US (1) US20080145625A1 (fr)
EP (1) EP1909971B1 (fr)
JP (1) JP2009502490A (fr)
CN (1) CN101232952B (fr)
AT (1) ATE483531T1 (fr)
DE (2) DE102005036427A1 (fr)
ES (1) ES2349659T3 (fr)
WO (1) WO2007014631A2 (fr)

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Also Published As

Publication number Publication date
ATE483531T1 (de) 2010-10-15
ES2349659T3 (es) 2011-01-10
DE102005036427A1 (de) 2007-02-08
JP2009502490A (ja) 2009-01-29
DE502006008031D1 (de) 2010-11-18
EP1909971B1 (fr) 2010-10-06
WO2007014631A3 (fr) 2008-03-13
CN101232952A (zh) 2008-07-30
CN101232952B (zh) 2010-11-10
US20080145625A1 (en) 2008-06-19
WO2007014631A2 (fr) 2007-02-08

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