Patent ID: 6722159
Filing Date: 2004-04-20
Classification: B01J,C03C,Y10T

Abstract:
A method for producing a layer of titanium dioxide in at least the crystalline phase, wherein said layer of titanium dioxide is a photocatalytically-activatable self-cleaning coating over glass float ribbon, and further wherein said coating is capable of having a photocatalytically-activated self-cleaning reaction rate of at least about 2Ã—10âˆ’3 cmâˆ’1minâˆ’1 upon exposure to ultraviolet radiation, said method comprising the steps of:positioning a chemical vapor deposition coating apparatus over a tin bath containing a glass ribbon having a temperature of at least about 400Â° C. (752Â° F.); directing a titanium dioxide precursor through said chemical vapor deposition apparatus over a surface of the glass ribbon heated to said temperature; and thereafter annealing the glass ribbon, whereby said layer of titanium dioxide is produced.