Glass article containing a coating with an interpenetrating polymer network

Patent metadata

Field	Value
Publication number	US-11059740-B2
Application number	US-201815996606-A
Country	US
Kind code	B2
Filing date	Jun 4, 2018
Priority date	Jun 2, 2017
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

Abstract

A glass article comprising a glass substrate and a coating on a surface of the glass substrate is disclosed. The coating comprises a glass frit and a binder comprising an interpenetrating polymer network. The interpenetrating polymer network comprises a crosslinked polyol resin, a second crosslinked resin, and a third resin. A method of forming the glass article containing the coating is also disclosed.

First claim

What is claimed is:

1. A method of forming a glass article containing a glass substrate and a coating, the method comprising:
applying a coating formulation comprising glass frit, a polymerizable polyol, a crosslinking agent, a second polymerizable compound comprising an organoalkoxysilane compound, and a third polymerizable compound to a surface of the glass substrate,
curing the coating formulation on the glass substrate wherein at least the polymerizable polyol forms a polyol resin.

2. The method according to claim 1 , wherein the organoalkoxysilane compound comprises tetraethoxysilane.

3. The method according to claim 1 , wherein the crosslinking agent comprises a melamine crosslinking agent.

4. The method according to claim 1 , wherein the third polymerizable compound comprises a compound containing at least two epoxide groups.

5. The method according to claim 1 , wherein the third polymerizable compound comprises an acrylate monomer.

6. The method according to claim 1 , wherein the third polymerizable compound forms a third resin comprising a crosslinked epoxy resin.

7. The method according to claim 1 , wherein the third polymerizable compound forms a third resin comprising a crosslinked acrylate resin.

8. The method according to claim 1 , wherein the polyol resin is a crosslinked polyol resin crosslinked with a melamine crosslinking agent.

9. The method according to claim 1 , wherein the second polymerizable compound forms a silicon-containing resin comprising a polysilsequioxane.

10. The method according to claim 1 , wherein the curing step results in a crosslinked polyol resin, a second crosslinked resin formed from the second polymerizable compound, and a third resin formed from the third polymerizable compound, wherein the resins form an interpenetrating network having a glass transition temperature between the glass transition temperature of any two of the crosslinked polyol resin, the second crosslinked resin, and the third resin.

11. The method according to claim 10 , wherein the glass transition temperature of the interpenetrating network is within a range of from 30° C. to 180° C.

12. The method according to claim 1 , wherein the coating includes organic material in an amount of 1 wt. % to 25 wt. %.

13. The method according to claim 1 , wherein the coating further comprises an inorganic pigment, a fluorescent pigment, or a combination thereof.

14. The method according to claim 1 , wherein the coating further comprises a UV absorber, a hindered amine light stabilizer, or a combination thereof.

15. The method according to claim 1 , wherein the glass frit comprises a colored glass frit.

16. The method according to claim 1 , wherein the coating further comprises a silicon-containing nanoparticle.

17. The method according to claim 1 , wherein the coating exhibits a cross-hatch adhesion of 3B or higher in accordance with ASTM D3359-09.

18. The method according to claim 1 , wherein the coating exhibits an MEK rub resistance of 100 strokes or greater in accordance with ASTM D5402-15.

19. The method according to claim 1 , wherein the coating exhibits a Hoffman hardness of 10 or greater in accordance with GE E50TF61.

20. The method according to claim 1 , wherein the coating exhibits a stud pull strength of 450 pounds per square inch or greater.

21. The method according to claim 1 , wherein the coating exhibits a ΔE value of about 2 or less after being exposed to a copper-accelerated acetic acid-salt spray in accordance with ASTM B368-09.

22. A method of forming a glass article containing a glass substrate and a coating, the method comprising:
applying a coating formulation comprising glass frit, a polymerizable polyol, a crosslinking agent comprising a melamine crosslinking agent, a second polymerizable compound, and a third polymerizable compound comprising at least two epoxide groups to a surface of the glass substrate,
curing the coating formulation on the glass substrate.

Assignees

• Guardian Glass Llc

Inventors

• Liang Liang
• Devisetti Suresh

Classifications

• C03C17/322

  Polyurethanes or polyisocyanates · CPC title

• C03C2217/445

  Organic continuous phases · CPC title

• C03C17/32

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

• C03C17/326

  Epoxy resins · CPC title

• C03C17/30

  with silicon-containing compounds · CPC title