Process to produces solutions to be used as coating agents...

Details Process to produces solutions to be used as coating agents... Process to produces solutions to be used as coating agents...

2003-09-15

2008-10-28

Vanoy, Timothy C. (Department: 1793)

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ivb metal

C423S274000, C423S275000, C423S608000, C423S610000

Reexamination Certificate

active

07442351

ABSTRACT:
The invention relates to a process for producing a stable solution containing Anatase titanium oxide intended to be deposited on a substrate in order to obtain a transparent photo-catalytic coating. Such a process includes the preparation of an initial stabilized peptized solution including a titanium precursor material, an organic solvent, an acid agent, the mixing of said initial solution with a large amount of water, the pH of the obtained intermediate solution being less then 3, subjecting said intermediate solution and its dispersion to a heat-treatment, the exchange of water by an organic solvent with low surface tension to obtain a final solution that is finally dispersed. The invention particularly allows to coat thermally sensitive and/or transparent substrates with photo-catalytic films of high optical quality.

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Barbé et al., Nanocrystalline Titanium Oxide Electrodes for Photovoltaic Applications, 1997, J. Am. Ceram. Soc., vol. 80, 3157-3171.

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