# US 8,541,055 B2 · Reflective coatings for glass articles, methods of deposition, and articles made thereby

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- Number: US 8,541,055 B2
- Document ID: US8541055B2
- Status: Granted
- Kind: B2
- Application number: 12/649,745
- Filed: 2009-12-30
- Published: 2011-06-30
- Granted: 2013-09-24
- Earliest claimed: 2009-12-30
- Assignees: PPG Industries Ohio, Inc.
- Applicants: Luke A. Kutilek; Mehran Arbab; Songwei Lu
- Inventors: Luke A. Kutilek; Mehran Arbab; Songwei Lu
- Web page: https://patentgrep.com/patent/US8541055B2

## CPC

- C23C 16/405: {of refractory metals or yttrium}
- C03C 17/005: {Coating the outside}
- C03C 17/2456: {Coating containing TiO2}
- C23C 16/4485: {by evaporation without using carrier gas in contact with the source material (C23C16/4486 takes precedence)}
- C03C 2217/212: TiO2
- C03C 2218/152: by cvd
- Y10T 428/1317: Multilayer [continuous layer]
- C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)
- 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
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The present invention is directed toward a method for coating an article by placing the article in a coating apparatus comprising at least one coating chamber having at least one air conduit in flow communication with the coating chamber via an air pathway. A portion of the article extends into a shielding member. At least one coating member is positioned in the coating chamber and is in flow communication with a source of titanium-containing coating material. The coating member deposits the coating material onto the exterior of the article to form a coating. At least one exhaust member is in flow communication with the coating chamber via an exhaust pathway for removing excess coating material from the coating chamber.

## Claims

### Claim 1

A method for coating an article having an interior and an exterior comprising:
placing an article to be coated into a coating chamber of a coating apparatus, wherein the article is a container having an interior and an exterior;
depositing a titania coating material onto a portion of the exterior of the article within the coating chamber to form a titania coating on a portion of the exterior of the article, wherein the titania coating has a thickness in the range of 200 Å to 800 Å and provides a luminous reflectance in the range of 12% to 38%;
shielding a portion of the exterior of the container such that the portion shielded is not coated, wherein the shielding is accomplished by a structural shielding member configured to surround a portion of the article such that the portion of the article not to be coated extends into the structural shielding member;
transferring air into the coating apparatus via an air pathway, wherein the air pathway directs the air through the structural shielding member and around the structural shielding member; and
removing excess coating material from the coating apparatus via at least one exhaust member.

### Claim 2 (depends on 1)

The method of claim 1, wherein the deposition step is selected from the group consisting of chemical vapor deposition and spray pyrolysis.

### Claim 3 (depends on 1)

The method of claim 1, wherein the titania coating material is selected from the group consisting of tetraisopropyl titanate, titanium tetrachloride, titanyl acetylacetonate, and combinations and mixtures thereof.