	US 12,285,928 B2
	Enameled glazing
Quentin Gillard, Huy (BE); Laura Ouidade Ouanaim, Marcinelle (BE); and Nerio Lucca, Fleurus (BE)
Assigned to AGC GLASS EUROPE, Louvain-la-Neuve (BE)
Appl. No. 17/787,266
Filed by AGC GLASS EUROPE, Louvain-la-Neuve (BE)
PCT Filed Dec. 16, 2020, PCT No. PCT/EP2020/086586 § 371(c)(1), (2) Date Jun. 17, 2022, PCT Pub. No. WO2021/122856, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 19218853 (EP), filed on Dec. 20, 2019; and application No. 20167684 (EP), filed on Apr. 2, 2020.
Prior Publication US 2023/0070792 A1, Mar. 9, 2023
Int. Cl. C03C 8/14 (2006.01); B32B 17/10 (2006.01); C03C 17/36 (2006.01)

CPC B32B 17/10036 (2013.01) [B32B 17/10091 (2013.01); B32B 17/10201 (2013.01); B32B 17/1022 (2013.01); B32B 17/1055 (2013.01); C03C 8/14 (2013.01); C03C 17/3644 (2013.01); C03C 17/3673 (2013.01); C03C 17/3681 (2013.01); B32B 2250/02 (2013.01); B32B 2255/205 (2013.01); B32B 2255/28 (2013.01); B32B 2307/202 (2013.01); B32B 2307/204 (2013.01); B32B 2307/416 (2013.01); B32B 2311/02 (2013.01); B32B 2311/20 (2013.01); B32B 2315/08 (2013.01); B32B 2398/20 (2013.01)]

17 Claims

1. A method to provide for an enameled glazing comprising, in sequence:

providing a glass sheet,

depositing an enamel coating composition comprising at least bismuth oxide, silicon oxide, and Cr₂CuO₄, on at least a part of the glass sheet,

firing the enamel coating on the glass sheet at a temperature of 500 to 680°, to form a fired enamel coating on the glass sheet,

depositing a multilayer coating on the glass sheet and on at least a part of the fired enamel coating on the glass sheet to form a coated glass sheet,

thermally treating the coated glass sheet at a temperature of 550 to 700° C., to form the enameled glazing comprising an enamel coating and a multilayer coating,

wherein the enamel coating

comprises Bi₄Si₃O₁₂and the enamel coating exhibits a crystallinity ratio <5, as measured by XRD, wherein the crystallinity ratio is a ratio of Bi₄Si₃O₁₂/Cr₂CuO₄.