Method of making rutile titanium dioxide microspheres containing elongated TiO2-nanocrystallites
US9108862B2 · kind B2 · utility
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7Claims
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Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | Jul 1, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2982
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Rutile TiO2 microspheres and microparticles in a botryoidal morphology which form from ordered acicular aggregates of elongated TiO2 crystallites that resemble nano-sized flower bouquets and/or triangular funnels, and process for their preparation by thermally hydrolyzing a soluble TiO2 precursor compound in aqueous solution in the presence of a morphology controlling agent selected from carboxylic acids and amino acids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.