High molecular weight polymers containing pendant salicylic acid groups for clarifying Bayer process liquors
US7560032B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Aug 17, 2006 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Aug 17, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/585
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A high molecular weight, water-soluble polymer comprising pendant salicylic acid groups and having a weight average molecular weight of at least about 2,000,000 daltons and use of the polymer for clarifying red mud-containing liquors generated in the Bayer process for the recovery of alumina from bauxite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.