Transparent, stable titanium dioxide sols
US7932208B2 · kind B2 · utility
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22Claims
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Key dates
| Filing date | Jun 29, 2010 |
| Grant date | Apr 26, 2011 |
| Priority date | — |
| Expiry date | Jun 29, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S516/922
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.