Antireflective coating for glass containers

Patent metadata

Field	Value
Publication number	US-9938185-B2
Application number	US-201213539808-A
Country	US
Kind code	B2
Filing date	Jul 2, 2012
Priority date	Jul 2, 2012
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

A glass container and related methods of manufacturing and coating glass containers. The glass container includes an inorganic-organic hybrid coating over at least a portion of an exterior surface of a glass substrate.

First claim

The invention claimed is:

1. A method of applying an inorganic-organic hybrid coating having anti-reflective properties to a glass container, the method comprising:
(a) applying a coating composition over an exterior surface of a glass substrate that defines a shape of the glass container, the coating composition consisting of (1) 1.0 wt. % to 6.0 wt. % of a UV curable organofunctional silane that includes an alkoxy functional group and an acrylic ester functional group, (2) 1.0 wt. % to 6.0 wt. % colloidal silica, (3) 0.10 wt. % to 5.0 wt. % water, (4) 1.0 wt. % to 10 wt. % of a catalyst, and (5) an organic solvent; and
(b) exposing the coating composition to UV light for a time sufficient to cure the coating composition into a transparent monolithic inorganic-organic hybrid coating that comprises an inorganic polymer component and an organic polymer component, the inorganic-organic hybrid coating providing an optical transmission gain relative to the glass substrate of at least 1% for light at a wavelength of 555 nm.

2. The method set forth in claim 1 wherein the inorganic-organic coating provides an average optical transmission gain relative to the glass substrate of at least 1% for light over a wavelength range of 380 nm to 750 nm.

3. The method set forth in claim 1 wherein the UV curable organofunctional silane includes a methoxy group and a methacryloxy group.

4. The method set forth in claim 1 wherein the UV curable organofunctional silane comprises at least one of methacryloxypropyltrimethoxysilane, acryloxypropyltrimethoxysilane, or dimethacryloxypropyl-dimethoxysilane.

5. The method set forth in claim 1 wherein the inorganic-organic hybrid coating has a thickness in the range of 100 nm to 200 nm.

6. The method set forth in claim 1 wherein the coating composition is not heated above 100° C. after being applied over the exterior surface of the glass substrate.

7. The method set forth in claim 1 wherein the glass container includes only one monolithic inorganic-organic hybrid coating over the exterior surface of the glass substrate.

8. A method of applying an inorganic-organic hybrid coating having anti-reflective properties to a glass container, the method comprising:
(a) providing a glass container that includes a soda-lime glass substrate that defines a shape of the container;
(b) applying a coating composition over an exterior surface of the glass substrate, the coating composition consisting of (1) 1.0 wt. % to 6.0 wt. % of a UV curable organofunctional silane that includes an alkoxy functional group and an acrylic ester functional group, (2) 1.0 wt. % to 6.0 wt. % colloidal silica, (3) 0.10 wt. % to 5.0 wt. % water, (4) 1.0 wt. % to 10 wt. % of a catalyst, and (5) an organic solvent; and
(c) exposing the coating composition to UV light for a time sufficient to cure the coating composition into a monolithic inorganic-organic hybrid coating.

9. The method set forth in claim 8 wherein step (a) comprises forming the glass container and annealing the glass container.

10. The method set forth in claim 8 wherein the inorganic-organic hybrid coating provides an average optical transmission gain relative to the glass substrate of at least 1.0% for light over a wavelength range of 380 nm to 750 nm.

11. The method set forth in claim 8 wherein the UV curable organofunctional silane comprises at least one of methacryloxypropyltrimethoxysilane, acryloxypropyltrimethoxysilane, or dimethacryloxypropyl-dimethoxysilane.

12. The method set forth in claim 8 wherein the catalyst is an acid.

13. The method set forth in claim 8 wherein the inorganic-organic hybrid coating has a thickness in the range of 100 nm to 200 nm.

14. The method set forth in claim 8 wherein the coating composition is not heated above 100° C. after being applied over the exterior surface of the glass substrate.

15. The method set forth in claim 8 further comprising applying a hot-end coating to the exterior surface of the glass substrate before applying the coating composition, and applying a cold-end coating over the inorganic-organic hybrid coating.

16. The method set forth in claim 8 wherein the glass container includes only one monolithic inorganic-organic hybrid coating over the exterior surface of the glass substrate.

17. The method set forth in claim 8 wherein the inorganic-organic hybrid coating provides an optical transmission gain relative to the glass substrate of at least 1% for light at a wavelength of 555 nm.

Assignees

• Remington Jr Michael P
• Sharma Pramod K
• Baker Daniel
• Owens Brockway Glass Container

Inventors

• Remington Jr Michael P
• Sharma Pramod K
• Baker Daniel

Classifications

• C03C17/005 Primary

  Coating the outside · CPC title

• C03C2217/732

  made of a single layer · CPC title

• C03C17/009

  Mixtures of organic and inorganic materials, e.g. ormosils and ormocers · CPC title