Higher actives dispersion polymer to aid clarification, dewatering, and retention and drainage
US6171505A · kind A · utility
17Cited by
16References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1998 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | Apr 3, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/928
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The invention is a method for clarifying, dewatering or improving retention and drainage of industrial waste water or paper furnish with an effective amount of at least one dispersion of a water soluble cationic polymer flocculant wherein the improvement comprises the addition of said polymer which has a concentration of at least twenty five percent to said waste water or paper furnish. The industrial waste is preferably food processing waste water, oily waste water, paper mill waste water and inorganic contaminated waste water. The paper furnish may be an aqueous cellulosic suspension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.