Preparation of an article of a glass or a glass-ceramic having an improved coating and that article

Patent metadata

Field	Value
Publication number	US-11032876-B2
Application number	US-201816182027-A
Country	US
Kind code	B2
Filing date	Nov 6, 2018
Priority date	May 19, 2010
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

A method for preparing an article, the structure of which comprises a substrate of a glass or a glass-ceramic and a coating fixed to at least one portion of the surface of the substrate. In a characteristic way, the coating is generated from at least one loaded polysilsesquioxane resin; the at least one polysilsesquioxane resin not containing any aryl radical in its structure.

First claim

What is claimed is:

1. A cooktop comprising:
a glass or glass-ceramic substrate; and
a coating fixed to at least one portion of a surface of the glass or glass-ceramic substrate, wherein the coating comprises a heat treated dispersion layer, the heat treated dispersion layer comprising:
a continuous phase consisting essentially of at least one polysilsesquioxane resin, the at least one polysilsesquioxane resin having units of formula (RSiO 1.5 ), R being identical or not, all different from an aryl group and being selected from a group consisting of linear and branched alkyl groups having 1 to 6 carbon atoms and cycloalkyl groups having 3 to 6 carbon atoms, wherein the at least one polysilsesquioxane resin is crosslinked; and
a dispersed phase consisting essentially of mineral fillers.

2. The cooktop of claim 1 , wherein the at least one polysilsesquioxane resin has units (RSiO 1.5 ), R being selected from the group consisting of linear and branched alkyl groups having 1 to 3 carbon atoms and cycloalkyl groups having 3 to 6 carbon atoms.

3. The cooktop of claim 1 , wherein at least one fraction of the mineral fillers comprises lamellar fillers.

4. The cooktop of claim 1 , wherein at least one fraction of the mineral fillers comprises pigments.

5. The cooktop of claim 1 , wherein the heat treated dispersion layer is a first heat treated dispersion layer and the coating further comprises a second heat treated dispersion layer, the second heat treated dispersion layer comprising:
a continuous phase consisting essentially of at least one polysilsesquioxane resin, the at least one polysilsesquioxane resin having units of formula (HSiO 1.5 ) and/or of formula (RSiO 1.5 ), R being identical or not, and all different from an aryl group; and
a dispersed phase consisting essentially of mineral fillers.

6. The cooktop of claim 1 , wherein the at least one polysilsesquioxane resin has units (RSiO 1.5 ), R either identical or not, being selected from a group consisting of linear and branched alkyl groups having 2 to 6 carbon atoms.

7. The cooktop of claim 1 , wherein the surface having the layer of the dispersion applied thereon is a first surface and the glass or glass-ceramic substrate of the cooktop further comprises a second surface opposite the first surface, wherein the first surface and the second surface are substantially parallel.

8. The cooktop of claim 1 , wherein the coating further comprises a mineral layer.

9. The cooktop of claim 1 , wherein the at least one polysilsesquioxane resin is a polysilsesquioxane resin with units (CH 3 SiO 1.5 ).

10. The cooktop of claim 1 , wherein the cooktop is configured to be disposed above one or more heating elements, such that the surface of the glass or glass-ceramic substrate upon which the coating is fixed faces the one or more heating elements.

Assignees

• Eurokera

Inventors

• Dufour Bruno
• Ferriz Gaelle
• Henry David
• Lehuede Philippe

Classifications

• C03C17/00 Primary

  Surface treatment of glass, not in the form of fibres or filaments, by coating (optical coatings of optical elements G02B1/10) · CPC title

• H05B3/74 Primary

  Non-metallic plates {, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits} · CPC title

• F24C15/10

  Tops, e.g. hot plates; Rings (cover lids or splash guards F24C15/12; spillage trays or grooves F24C15/14) · CPC title

• C03C17/32

  with synthetic or natural resins (C03C17/30 takes precedence) · CPC title

• C03C17/007 Primary

  containing a dispersed phase, e.g. particles, fibres or flakes, in a continuous phase · CPC title