Amine polymers having dewatering activity
US4254250A · kind A · utility
12Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1978 |
| Grant date | Mar 3, 1981 |
| Priority date | — |
| Expiry date | Dec 4, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S524/922
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Amine polymers are used to dewater suspensions of particulate matter in water. The polymers are synthesized by the reaction of a nitrile polymer such as polyacrylonitrile, an aminating agent, and a sulfur activator. The dewatering properties of these amine polymers can be beneficially employed to treat sewage sludge, silt laden water, industrial waste and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.