Methods for making coated glass articles such as coated glass containers

Patent metadata

Field	Value
Publication number	US-11091389-B2
Application number	US-201916540382-A
Country	US
Kind code	B2
Filing date	Aug 14, 2019
Priority date	Aug 31, 2018
Publication date	Aug 17, 2021
Grant date	Aug 17, 2021

Abstract

According to one or more embodiments disclosed herein, a coated glass article may be made by a method that includes applying a water-based coating mixture onto at least a portion of a first surface of a glass article, and heating the water-based coating mixture to form a coating on the first surface of the glass article, where the coating includes metal oxide and polymer. The water-based coating mixture may include comprise water in an amount of at least 50% by weight of the water-based coating mixture, a polymer or polymer precursor, and a metal oxide precursor. The polymer or polymer precursor may be miscible in the water or may form an emulsion with the water. The metal oxide precursor may be miscible in the water or may form an emulsion with the water.

First claim

What is claimed is:

1. A method for making a coated glass article, the method comprising:
applying a water-based coating mixture onto at least a portion of a first surface of a glass article, wherein the water-based coating mixture comprises:
water in an amount of at least 60% by weight of the water-based coating mixture;
a polymer or polymer precursor, wherein the polymer or polymer precursor is miscible in the water or forms an emulsion with the water; and
a metal oxide precursor that is miscible in the water or forms an emulsion with the water; and

heating the water-based coating mixture to form a coating on the first surface of the glass article, the coating comprising metal oxide and polymer,
wherein the coated glass article is a glass container.

2. The method of claim 1 , wherein the polymer of the water-based coating mixture comprises a fluoropolymer.

3. The method of claim 1 , wherein the metal oxide precursor comprises an organotitanate.

4. The method of claim 1 , wherein the metal oxide precursor comprises an organometallic chelate.

5. The method of claim 1 , wherein the metal oxide of the coating comprises titania.

6. The method of claim 1 , wherein the weight ratio of organic solvent to water, if organic solvent is present, is less than about 1:10.

7. The method of claim 1 , wherein the polymer of the coating does not substantially degrade at temperatures of at least about 250° C.

8. The method of claim 1 , wherein the coating has a coefficient of friction of less than or equal to about 0.7.

9. The method of claim 1 , wherein the polymer of the water-based coating mixture comprises polyimide, polyimide amide, or polyamic acid.

10. The method of claim 1 , wherein the water-based coating mixture comprises water in an amount of at least 80% by weight of the water-based coating mixture.

11. A method for making a coated pharmaceutical package, the method comprising:
applying a water-based coating mixture onto at least a portion of a first surface of a glass container, wherein the water-based coating mixture comprises:
water in an amount of at least 60% by weight of the water-based coating mixture;
a polymer or polymer precursor, wherein the polymer or polymer precursor is miscible in the water or forms an emulsion with the water; and
a metal oxide precursor that is miscible in the water or forms an emulsion with the water; and

heating the water-based coating mixture to form a coating on the first surface of the glass container, the coating comprising metal oxide and polymer.

12. The method of claim 11 , wherein the polymer of the water-based coating mixture comprises a fluoropolymer.

13. The method of claim 11 , wherein the metal oxide precursor comprises an organotitanate.

14. The method of claim 11 , wherein the metal oxide precursor comprises an organometallic chelate.

15. The method of claim 11 , wherein the metal oxide of the metal oxide of the coating comprises titania.

16. The method of claim 11 , wherein the weight ratio of organic solvent to water, if organic solvent is present, is less than about 1:10.

17. The method of claim 11 , wherein the polymer of the coating does not substantially degrade at temperatures of at least about 250° C.

18. The method of claim 11 , wherein the coating has a coefficient of friction of less than or equal to about 0.7.

19. The method of claim 11 , wherein the polymer of the water-based coating mixture comprises polyimide, polyimide amide, or polyamic acid.

20. The method of claim 11 , wherein the water-based coating mixture comprises water in an amount of at least 80% by weight of the water-based coating mixture.

Assignees

• Corning Inc

Inventors

• Niu Weijun
• Sun Wei
• Wagner Frederic Christian

Classifications

• C03C2218/111

  by dipping, immersion · CPC title

• B05D3/0254

  After-treatment · CPC title

• C03C2217/445

  Organic continuous phases · CPC title

• C03C17/005

  Coating the outside · CPC title

• C03C2217/78

  Coatings specially designed to be durable, e.g. scratch-resistant · CPC title