# US 11,298,921 B2 · Glass article having coating with interpenetrating polymer network

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- Number: US 11,298,921 B2
- Document ID: US11298921B2
- Status: Granted
- Kind: B2
- Application number: 14/956,559
- Filed: 2015-12-02
- Published: 2017-06-08
- Granted: 2022-04-12
- Earliest claimed: 2015-12-02
- Assignees: Guardian Glass, LLC
- Applicants: Guardian Glass, LLC.
- Inventors: Liang Liang; Suresh Kumar Devisetti
- Web page: https://patentgrep.com/patent/US11298921B2

## CPC

- B32B 27/08: of synthetic resin
- C03C 17/009: {Mixtures of organic and inorganic materials, e.g. ormosils and ormocers}
- C03C 17/04: by fritting glass powder
- C03C 17/30: with silicon-containing compounds
- C03C 17/32: with synthetic or natural resins (C03C17/30 takes precedence)
- C03C 17/322: {Polyurethanes or polyisocyanates}
- C03C 17/326: {Epoxy resins}
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS

## Abstract

A glass article includes a glass substrate and a coating disposed on the glass substrate. The coating includes a glass frit material and a binder material. The binder material includes a first polymer that has cross-linked first polymer chains and a second polymer that has second polymer chains that are linear, branched, or cross-linked. The cross-linked first polymer chains and the second polymer chains form an interpenetrating network in which the second polymer chains are intertwined on a molecular scale with the cross-linked first polymer chains.

## Claims

### Claim 1

A glass article comprising:
a glass substrate;
a coating disposed on the glass substrate, the coating including a glass frit material and a binder material, the binder material comprising a first polymer having cross-linked first polymer chains and a second polymer having second polymer chains that are linear, branched, or cross-linked, and the cross-linked first polymer chains and the second polymer chains forming an interpenetrating network in which the second polymer chains are intertwined with the cross-linked first polymer chains and further wherein the coating includes less than 11% of the binder material relative to a total weight of the coating; and
wherein the coating is chemically bonded to the glass substrate.

### Claim 2 (depends on 1)

The glass article of claim 1, wherein the coating includes at least 89% of the glass frit relative to a total weight of the coating.

### Claim 3 (depends on 1)

The glass article as recited in claim 1, wherein the first polymer includes a carbon-backbone polymer and the second polymer includes a silicon-backbone polymer.

### Claim 4 (depends on 3)

The glass article as recited in claim 3, wherein the silicon-backbone polymer includes polysiloxane.

### Claim 5 (depends on 4)

The glass article as recited in claim 4, wherein the carbon-backbone polymer includes a thermoset polymer.

### Claim 6 (depends on 4)

The glass article as recited in claim 4, wherein the carbon-backbone polymer includes polyurethane or epoxy.

### Claim 7 (depends on 3)

The glass article as recited in claim 3, wherein the silicon-backbone polymer includes polysilsesquioxane.

### Claim 8 (depends on 1)

The glass article as recited in claim 1, wherein the second polymer chains are cross-linked.

### Claim 9 (depends on 1)

The glass article as recited in claim 1, wherein the coating further comprises a third polymer having third polymer chains that are either linear, branched, or cross-linked, and the third polymer chains are also intertwined in the interpenetrating network with the cross-linked first polymer chains.

### Claim 10 (depends on 9)

The glass article as recited in claim 9, wherein the third polymer includes a thermoset polymer.

### Claim 11 (depends on 1)

The glass article as recited in claim 1, wherein the coating further comprises nanoparticles.

### Claim 12 (depends on 11)

The glass article as recited in claim 11, wherein the nanoparticles include silicon-containing nanoparticles, and relative to a total weight of the coating, the coating includes 0.5% to 5% of the silicon-containing nanoparticles and less than 11% of the binder material inclusive of the silicon-containing nanoparticles.

### Claim 13 (depends on 12)

The glass article as recited in claim 12, wherein the silicon-containing nanoparticles are chemically bonded with at least one of the first polymer chains or the second polymer chains.

### Claim 14 (depends on 11)

The glass article as recited in claim 11, wherein the nanoparticles include titanium-containing nanoparticles.

### Claim 15 (depends on 1)

The glass article as recited in claim 1, further comprising a substantially glass frit-free polymeric layer disposed on the coating.

### Claim 16 (depends on 1)

The glass article as recited in claim 1, wherein the coating further comprises a pigment.

### Claim 17 (depends on 1)

The glass article as recited in claim 1, wherein the glass substrate includes a low-E coating.