Cationic polymers for sludge dewatering
US5093413A · kind A · utility
8Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1991 |
| Grant date | Mar 3, 1992 |
| Priority date | — |
| Expiry date | Mar 4, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/56
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Water-in-oil emulsion polymers of cationic acrylamides to which are added small quantities of a hydroxyalkyl methacrylate and sodium formate. These polymers are useful as flocculants in sludge dewatering processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.