Haze-free infrared-reflecting coated glass

• US 4,857,361 A
• Filed: 04/18/1988
• Issued: 08/15/1989
• Est. Priority Date: 04/18/1988
• Status: Expired due to Fees

• Current Assignee: PPG Industries Incorporated (Nouryon BV)
• Original Assignee: PPG Industries Incorporated (Nouryon BV)
• Inventors: Davis, James A., Neuman, George A., Bloss, Karl H.
• Primary Examiner(s): Bell, Janyce
• Application Number:
  US07/182,643
• Time in Patent Office: 484 Days
• Field of Search: 427/109, 427/126.3, 427/164, 427/226, 427/166, 427/255, 427/255.2, 427/255.3, 556/94
• US Class Current: 427/109
• CPC Class Codes: C03C 17/2453 Coating containing SnO2
• CPC Class Codes: C23C 16/407 of zinc, germanium, cadmium, indium, tin, thallium or bismuth

Abstract

A novel organotin coating composition comprising tributyltin dimethylpropionate is disclosed, along with a method for preparing it and a method for pyrolyzing it to form a tin oxide film on the surface of a substrate.

Claims

1. A method of forming a tin oxide coating comprising contacting a surface of a substrate in an oxidizing atmosphere with a mixture consisting essentially of tributyltin dimethylpropionate vapor and a carrier gas at a temperature sufficient to thermally react said tributyltin dimethylpropionate to deposit a tin oxide film on said surface.

2. A method according to claim 1, wherein said substrate is glass.

3. A method according to claim 1, wherein said carrier gas is air.

4. A method according to claim 3, wherein said mixture further comprises a fluorine-containing compound.

5. A method according to claim 4, wherein said fluorine containing compound is trifluoroacetic acid.

6. A method according to claim 5, wherein said mixture comprises about 1 to 10 percent by weight trifluoroacetic acid based on the weight of tributyltin dimethylpropionate.

7. A method according to claim 6, wherein said mixture comprises about 5 percent by weight trifluoroacetic acid.

8. A method according to claim 1, wherein said substrate is contacted with tributyltin dimethylpropionate at a temperature of at least 350°

C.

9. A method according to claim 8, wherein said substrate is contacted with tributyltin dimethylpropionate at a temperature in the range of 500°

to 650°

C.

10. A method according to claim 9, wherein said substrate is contacted with tributyltin dimethylpropionate at a temperature in the range of 630°

to 640°

C.