Coated glass having antifog properties

Patent metadata

Field	Value
Publication number	US-11603330-B2
Application number	US-201916434222-A
Country	US
Kind code	B2
Filing date	Jun 7, 2019
Priority date	Jun 8, 2018
Publication date	Mar 14, 2023
Grant date	Mar 14, 2023

Abstract

A coated glass substrate is disclosed as well as a method of making the coated glass substrate. The coated glass substrate comprises a glass substrate and a coating on a surface of the glass substrate wherein the coating includes a binder. The binder may include an interpenetrating network. For example, the network may include a crosslinked polyacrylate and a crosslinked polyacrylamide. In addition, the transparency of the coated substrate after one of the following conditions may be within 10% of the transparency of the coated substrate prior to the condition: (i) wherein the coated substrate is stored at a temperature of 0° C. or less and then exposed to an environment at 21° C. and 70% humidity or (ii) wherein the coated substrate is positioned within 100° C. steam for one minute.

First claim

The invention claimed is:

1. A coated glass substrate comprising
a glass substrate; and
a coating on a surface of the glass substrate wherein the coating includes a binder comprising a polyacrylate and a polyacrylamide wherein at least one of the polyacrylate and the polyacrylamide is crosslinked.

2. The coated glass substrate of claim 1 , wherein the polyacrylate is a crosslinked polyacrylate.

3. The coated glass substrate of claim 1 , wherein the polyacrylate is formed from a functionalized acrylate.

4. The coated glass substrate of claim 2 , wherein the polyacrylate is crosslinked using a diacrylate.

5. The coated glass substrate of claim 1 , wherein the polyacrylamide is a crosslinked polyacrylamide.

6. The coated glass substrate of claim 5 , wherein the polyacrylamide is crosslinked using a carbodiimide.

7. The coated glass substrate of claim 1 , wherein the binder comprises a crosslinked polyacrylate and a crosslinked polyacrylamide.

8. The coated glass substrate of claim 1 , wherein the binder further comprises a surfactant including a carbon-carbon double bond or a polymer derived from the surfactant including a carbon-carbon double bond.

9. The coated glass substrate of claim 1 , wherein the polyacrylate is modified by a surfactant.

10. The coated glass substrate of claim 1 , wherein the transparency of the coated glass substrate after one of the following conditions is within 10% of the transparency of the coated substrate prior to the condition: wherein the coated substrate is stored at a temperature of 0° C. or less and then exposed to an environment at 21° C. and 70% humidity or wherein the coated substrate is positioned within steam 100° C. steam for one minute.

11. The coated glass substrate of claim 1 , wherein the coated glass substrate has a contact angle of about 25° or less after 5 seconds.

12. A coated glass substrate comprising
a glass substrate; and
a coating on a surface of the glass substrate wherein the coating includes a binder comprising a polyacrylate and a polyacrylamide wherein at least one of the polyacrylate and the polyacrylamide is crosslinked, and
wherein the transparency of the coated substrate after one of the following conditions is within 10% of the transparency of the coated substrate prior to the condition: wherein the coated substrate is stored at a temperature of 0° C. or less and then exposed to an environment at 21° C. and 70% humidity or wherein the coated substrate is positioned within steam 100° C. steam for one minute.

13. The coated glass substrate of claim 12 , wherein the coated substrate has a contact angle of about 25° or less after 5 seconds.

14. The coated glass substrate of claim 12 , wherein the binder includes an interpenetrating polymer network.

15. The coated glass substrate of claim 14 , wherein the interpenetrating polymer network includes a crosslinked polyol resin.

16. The coated glass substrate of claim 14 , wherein the interpenetrating polymer network includes a polysiloxane.

17. The coated glass substrate of claim 12 , wherein binder includes a crosslinked polyacrylate and a crosslinked polyacrylamide.

18. A method of forming the coated glass substrate of claim 12 , the method comprising:
applying a coating formulation to a glass substrate, the coating formulation comprising a first polymerizable compound including an acrylate monomer, a second polymerizable compound including an acrylamide monomer, and at least one crosslinking agent, and
polymerizing the compounds such that the resulting coating includes a polyacrylate and a polyacrylamide wherein at least one of the polyacrylate and polyacrylamide are crosslinked.

19. The method of claim 18 , wherein the coating formulation further includes a polyol, or combinations thereof an organoalkoxysilane, or combinations thereof.

20. The method of claim 18 , wherein the crosslinking agent comprises an isocyanate, an amine, an acrylate, a carbodiimide, or a combination thereof.

Assignees

• Guardian Glass Llc

Inventors

• Liang Liang

Classifications

• C08L2201/10

  Transparent films; Clear coatings; Transparent materials · CPC title

• C03C17/322 Primary

  Polyurethanes or polyisocyanates · CPC title

• C03C17/30

  with silicon-containing compounds · CPC title

• C03C17/32 Primary

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

• C09D133/26

  Homopolymers or copolymers of acrylamide or methacrylamide · CPC title