Use of polymers in the recycled fiber washing/deinking process
US5626718A · kind A · utility
94Cited by
17References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1994 |
| Grant date | May 6, 1997 |
| Priority date | — |
| Expiry date | Sep 16, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/64
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to a method for increasing the retention on a washing/thickening device in an aqueous papermaking system. The method generally comprises adding to the furnish solids of the system an effective amount of a cationic polyacrylamide polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.