	US 12,234,184 B2
	Enamel coating of a coated glass substrate
Roland Katzbach, Maastricht (NL)
Assigned to Fenzi AGT Netherlands B.V., Maastricht (NL)
Appl. No. 17/615,448
Filed by Fenzi AGT Netherlands B.V., Maastricht (NL)
PCT Filed Jul. 15, 2020, PCT No. PCT/GB2020/051697 § 371(c)(1), (2) Date Nov. 30, 2021, PCT Pub. No. WO2021/023965, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 1911367 (GB), filed on Aug. 8, 2019.
Prior Publication US 2022/0227661 A1, Jul. 21, 2022
Int. Cl. C03C 8/04 (2006.01); C03C 3/145 (2006.01); C03C 3/15 (2006.01); C03C 4/02 (2006.01); C03C 8/08 (2006.01); C03C 8/16 (2006.01); C03C 17/04 (2006.01)

CPC C03C 8/04 (2013.01) [C03C 3/145 (2013.01); C03C 3/15 (2013.01); C03C 4/02 (2013.01); C03C 8/08 (2013.01); C03C 8/16 (2013.01); C03C 17/04 (2013.01); C03C 2204/00 (2013.01); C03C 2207/00 (2013.01); C03C 2218/119 (2013.01); C03C 2218/32 (2013.01)]

15 Claims

1. A method of decorating a glass substrate having a coating, said method comprising:

(i) applying a paste onto at least a portion of said coating in a desired pattern;

(ii) drying said paste to form a dried paste in said desired pattern; and

(iii) firing said dried paste to form an enamel in said desired pattern, said enamel being directly bonded to said glass substrate,

wherein the paste comprises a solids portion dispersed in a dispersion medium, said solids portion including a composition comprising:

15 to 35 mol % ZnO;

20 to 30 mol % B₂O₃;

40 to 50 mol % Bi₂O₃; and

1.5 to 12 mol % Al₂O₃,

and wherein step (iii) causes dissolution of said portion of said coating.