Amine-aldehyde resins and uses thereof in separation processes
US8127930B2 · kind B2 · utility
5Cited by
58References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2007 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Sep 29, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/12
- WIPO fieldEnvironmental technology
- 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.