Method of making architectural coating with interference colors

• US 4,964,963 A
• Filed: 12/15/1989
• Issued: 10/23/1990
• Est. Priority Date: 12/17/1984
• Status: Expired due to Term

• Current Assignee: PPG Industries Incorporated (Nouryon BV)
• Original Assignee: PPG Industries Incorporated (Nouryon BV)
• Inventors: Criss, Russell C.
• Primary Examiner(s): Weisstuch, Aaron
• Application Number:
  US07/450,936
• Time in Patent Office: 312 Days
• Field of Search: 204/192.27, 204/192.26, 428/432
• US Class Current: 204/192.27
• CPC Class Codes: C03C 17/36 at least one coating being a metal
• CPC Class Codes: C03C 17/3607 Coatings of the type glass/inorganic compound/metal
• CPC Class Codes: C03C 17/3613 Coatings of type glass/inorganic compound/metal/inorganic compound/metal/other
• CPC Class Codes: C03C 17/3626 one layer at least containing a nitride, oxynitride, boronitride or carbonitride
• CPC Class Codes: C03C 17/3642 the multilayer coating containing a metal layer
• CPC Class Codes: C03C 17/3652 the coating stack containing at least one sacrificial layer to protect the metal from oxidation
• CPC Class Codes: C03C 17/366 Low-emissivity or solar control coatings
• CPC Class Codes: C03C 17/3681 the multilayer coating being used in glazing, e.g. windows or windscreens
• CPC Class Codes: C23C 14/0015 characterized by the colour of the layer
• CPC Class Codes: C23C 14/085 of iron group metals
• CPC Class Codes: C23C 14/087 of copper or solid solutions thereof
• CPC Class Codes: C23C 14/18 on other inorganic substrates
• CPC Class Codes: C23C 28/00 Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D

Abstract

A transparent article for reflecting solar energy comprising a metal oxide film which exhibits color by absorption and interference effects and a highly reflective metal film is disclosed along with a sputtering method for its production.

Claims

1. A method of making a solar energy reflecting coated article comprising the steps of:

a. sputtering stainless steel in an oxidizing atmosphere onto a surface of a substrate to form a first transparent coating which exhibits color by absorption and interference effects; and

b. sputtering over said film a highly reflective transparent metallic film.

2. A method according to claim 1, wherein said metallic film is deposited by sputtering a metal selected from the group consisting of silver, gold, copper, aluminum and mixtures thereof in an inert atmosphere.

3. A method according to claim 2, wherein silver is sputtered in an atmosphere comprising argon.

4. A method according to claim 3, wherein a transparent protective film is deposited over said silver film, which protective film does not significantly decrease the reflectance of the colored coated article.

5. A method according to claim 4, wherein a transparent protective film comprising stainless steel is deposited over said silver film.

6. A method according to claim 5, wherein the protective film is deposited by sputtering stainless steel in an inert atmosphere.

7. A method according to claim 6, wherein the stainless steel oxide film and stainless steel protective film are both deposited by sputtering of stainless steel comprising about 68 percent iron, 17 percent chromium, 12 percent nickel and 2.25 percent molybdenum.