Process for the flocculation of suspended solids
USRE31900E · kind E · reissue
12Cited by
9References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 16, 1983 |
| Grant date | May 28, 1985 |
| Priority date | — |
| Expiry date | Mar 16, 2003 |
Classification
- Technology area (CPC —)General
Abstract
Aqueous dispersions of solids are readily flocculated with polymeric anionic flocculants containing comonomers of 2-acrylamido-2-methylpropanesulfonic acid and acrylamide. The polymeric flocculant should contain from about 1.0 to about 35.0 mole percent of repeating units derived from 2-acrylamido-2-methylpropanesulfonic acid and should have a Brookfield viscosity of at least 2.0 centipoises. In addition to their flocculating ability, employment of these copolymers achieves a high degree of compaction in the flocculated solids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.