Method for improving retention and drainage characteristics in alkaline papermaking
US5482595A · kind A · utility
8Cited by
9References
14Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 22, 1994 |
| Grant date | Jan 9, 1996 |
| Priority date | — |
| Expiry date | Mar 22, 2014 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H23/14
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of improving the drainage characteristics of a pulp slurry in a papermaking operation utilizing the sequential steps of adding alum, ionic polyacrylamide and cationic starch. The cationic starch can be added to the slurry prior to or after the primary screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.