Titanium dioxide nanoparticles and nanoparticle suspensions and methods of making the same
US7326399B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2005 |
| Grant date | Feb 5, 2008 |
| Priority date | — |
| Expiry date | Dec 3, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/64
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Titanium dioxide nanoparticles are formed using a dispersing agent to form nanoparticles with desired size, shape, and uniformity. The titanium dioxide nanoparticles are formed by reacting an inorganic titanium compound with water or ice to form an aqueous titanium compound. The aqueous titanium compound is reacted or combined with a dispersing agent. Titanium dioxide nanoparticles are precipitated to form a suspension. The formation of the titanium dioxide nanoparticles is influenced by the presence of bonding of the dispersing agent. The size of the nanoparticles can be advantageously controlled by selecting the ratio of titanium to dispersing agent. In addition, the titanium dioxide nanoparticles can be used in suspension form or filtered and dried to form a powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.