Cationic polymers for sludge dewatering
US5183576A · kind A · utility
14Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1991 |
| Grant date | Feb 2, 1993 |
| Priority date | — |
| Expiry date | Aug 9, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/54
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method of dewatering sludge is disclosed. This method comprises adding to the sludge an effective amount for the purpose of a polymer comprising repeat unit moieties of the compound methacryloyloxyethyl trimethyl ammonium chloride, said polymer having an intrinsic viscosity of about 1.0 to about 4.5 dl/g.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.