# US 2019/0316259 A1 · Method for Producing a Glass Coating on a Substrate

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- Number: US 2019/0316259 A1
- Document ID: US20190316259A1
- Status: Published application
- Kind: A1
- Application number: 16/343,122
- Filed: 2017-10-17
- Published: 2019-10-17
- Earliest claimed: 2016-10-19
- Assignees: SEPIES GmbH
- Applicants: SEPIES GmbH
- Inventors: Siegfried Piesslinger-Schweiger; Olaf Boehme
- Web page: https://patentgrep.com/patent/US20190316259A1

## CPC

- C23C 18/1216: {Metal oxides (C23C18/1212 takes precedence)}
- C23C 18/1254: {Sol or sol-gel processing}
- C03C 1/008: {for the production of films or coatings}
- C23C 18/1208: {Oxides, e.g. ceramics}
- C23C 18/1233: {Organic substrates}
- C23C 18/1241: {Metallic substrates}
- C23C 18/1245: {Inorganic substrates other than metallic}
- C23C 18/1295: {with after-treatment of the deposited inorganic material}
- C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)
- 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

## Abstract

The invention relates to a method for producing a glass coating on a substrate, comprising the following steps: applying a liquid sol to at least one surface of the substrate, allowing the sol to react to form a gel, and briefly treating the gel on the at least one surface outside a furnace in the presence of water vapour at a temperature of at least 700° C. The method according to the invention makes the coated surface dirt-repellent, electrically insulating, non-combustible, easy to clean and resistant to ageing, corrosion and chemicals. A particular advantage of the method according to the invention is that it can be carried out outside a furnace and nevertheless makes glass coatings possible.

## Claims

### Claim at position 1

1-5. (canceled)

### Claim 6

A process for producing a glass layer of thickness 1 μm to 20 μm and having an areal extent of greater than 2 cm2 on a substrate of metal, ceramic, concrete, stone or wood, comprising:
a) applying a liquid sol to at least one surface of the substrate, where the sol comprises siloxanes of the formula Si(OR′)4-nR″n with n=0, 1 or 2, where each OR′ is independently a hydroxyl, alkoxy and/or cycloalkoxy radical, and each R″, where present, is independently an alkyl and/or cycloalkyl radical;
b) leaving the sol to react to form a gel; and
c) treating the gel on the at least one surface outside an oven in the presence of steam at a temperature of at least 700° C. in one or more successive steps each having a duration of 5 to 60 seconds, so as to form a homogeneous, three-dimensional network of (SiO2)n.

### Claim 7 (depends on 6)

The process as claimed in claim 6, wherein the sol further comprises one or more elements selected from the group consisting of Al, Ti, Cr, Mg, Ca and Zn.

### Claim 8 (depends on 6)

The process as claimed in claim 6, wherein the treatment in step c) is effected in multiple successive steps each having a duration of 5 to 60 seconds.

### Claim 9 (depends on 6)

A composite material comprising a substrate of metal, ceramic, concrete, stone or wood and a glass layer having an areal extent of greater than 2 cm2, wherein the glass layer is prepared by the process of claim 6.