Amine-aldehyde resins and uses thereof in separation processes
US10150839B2 · kind B2 · utility
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69References
20Claims
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Key dates
| Filing date | Jun 23, 2014 |
| Grant date | Dec 11, 2018 |
| Priority date | — |
| Expiry date | Sep 20, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/28
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Amine-aldehyde resins are disclosed for removing a wide variety of solids and/or ionic species from the liquids in which they are suspended and/or dissolved. These resins are especially useful as froth flotation depressants, for example in the beneficiation of value materials (e.g., bitumen, coal, or kaolin clay) to remove impurities such as sand. The resins are also useful for treating aqueous liquid suspensions to remove solid particulates, as well as for removing metallic ions in the purification of water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.