Methods of obtaining photoactive coatings and/or anatase crystalline phase of titanium oxides and articles made thereby

• US 7,323,249 B2
• Filed: 04/08/2003
• Issued: 01/29/2008
• Est. Priority Date: 08/31/2000
• Status: Expired due to Term

• Current Assignee: Vitro Flat Glass LLC (Compagnie De Saint-Gobain)
• Original Assignee: PPG Industries Ohio Incorporated (Nouryon BV)
• Inventors: Athey, Pat Ruzakowski, Finley, James J.
• Primary Examiner(s): BLACKWELL, GWENDOLYN
• Application Number:
  US10/409,517
• Publication Number:
  US 20030235720A1
• Time in Patent Office: 1,757 Days
• Field of Search: 428/432, 428/697, 428/699, 428/701, 428/702
• US Class Current: 428/432
• CPC Class Codes: C03C 17/002 for flat glass, e.g. float glass
• CPC Class Codes: C03C 17/3417 all coatings being oxide coatings
• CPC Class Codes: C03C 2217/71 Photocatalytic coatings
• CPC Class Codes: C23C 14/024 Deposition of sublayers, e.g. to promote adhesion of the coating C23C14/027 takes precedence
• CPC Class Codes: C23C 14/083 of refractory metals or yttrium
• CPC Class Codes: C23C 14/185 by cathodic sputtering
• CPC Class Codes: C23C 14/5806 Thermal treatment
• CPC Class Codes: C23C 14/5853 Oxidation
• CPC Class Codes: C23C 16/405 of refractory metals or yttrium
• CPC Class Codes: Y02T 50/60 Efficient propulsion technologies, e.g. for aircraft
• CPC Class Codes: Y10T 428/261 In terms of molecular thickness or light wave length
• CPC Class Codes: Y10T 428/265 1 mil or less

Abstract

A method of making a photoactive coating includes depositing a first coating material containing zirconium oxide over at least a portion of a substrate and depositing a second coating material containing titanium oxide over at least a portion of the first coating material to provide a coated substrate. At least one of the first and second coating materials is deposited by pyrolytic deposition.

Claims

1. A vehicle or architectural transparency comprising:

a glass substrate;

a first continuous film comprising zirconium oxide in the cubic, baddeleyite or orthorhombic crystalline phase pyrolytically deposited directly on substantially all of a glass substrate surface; and

a second continuous film comprising a material selected from at least one metal oxide or semiconductor metal oxide pyrolytically deposited on substantially all of the first film.

2. A vehicle or architectural transparency, comprising:

a glass substrate;

a first continuous layer comprising zirconium oxide in the cubic, baddeleyite or orthorhombic crystalline phase pyrolytically deposited directly on substantially all of the substrate; and

a second continuous layer comprising titanium oxide pyrolytically deposited on substantially all of the first layer.

3. The article of claim 2, wherein the first layer has a thickness greater than 100 Å

.

4. The article of claim 2, wherein the second layer is in direct contact with the first layer.

5. The article of claim 2, wherein the second layer has a thickness greater than 100 Å

.

6. A coated substrate comprising:

a first continuous film comprising zirconium oxide in the cubic, baddeleyite or orthorhombic crystalline phase pyrolytically deposited directly on substantially all of a glass substrate and in contact with at least a portion of the glass substrate surface; and

a second continuous film comprising a material selected from at least one metal oxide or semiconductor metal oxide deposited on substantially all of the first film.