Cobalt oxide nanoparticle preparation
US10519042B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Jan 12, 2016 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Jan 12, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/64
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of making stable aqueous dispersions and concentrates of cobalt oxide nanoparticles is described, wherein a reaction mixture comprising cobalt(II) ion, a carboxylic acid, a base, an oxidant and water is formed, and in which cobalt oxide nanoparticles are formed. Cobalt oxide nanoparticles ranging in average crystallite size from about 4 nm to 15 nm are described. The cobalt oxide nanoparticles may be isolated and redispersed to form stable, homogeneous, aqueous dispersions of cobalt oxide nanoparticles containing from about 1 to about 20 weight percent cobalt oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.