Transparent, stable titanium dioxide sols

Details Transparent, stable titanium dioxide sols Transparent, stable titanium dioxide sols

2011-04-26

2011-04-26

Hailey, Patricia L (Department: 1732)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C423S608000, C423S609000, C423S610000, C423S611000, C423S612000, C423S613000, C423S614000, C423S615000, C423S616000, C516S090000, C516S099000, C516S922000

Reexamination Certificate

active

07932208

ABSTRACT:
A method of preparing stable, transparent photocatalytic titanium dioxide sots is disclosed which involves thermal treatment of a suspension of amorphous titanium dioxide in the presence of certain alpha-hydroxy acids. The sots comprise titanium dioxide particles in the anatase form having a crystallite size less than about 10 nm and exhibit excellent stability and transparency at basic, neutral, and acid pH.

REFERENCES:
patent: 6420437 (2002-07-01), Mori et al.
patent: 6576589 (2003-06-01), Na et al.
patent: 6653356 (2003-11-01), Sherman
patent: 7763565 (2010-07-01), Fu et al.
patent: 2004/0241502 (2004-12-01), Chung et al.
patent: 2009/029856 (2009-03-01), None

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