Method for increasing paper strength
US9347181B2 · kind B2 · utility
4Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2013 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | Nov 22, 2033 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H23/22
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a method for increasing paper strength in papermaking process comprising adding to a pulp a composition comprising an anionic polyacrylamide (APAM) and a high charge cationic glyoxylated polyacrylamide (GPAM). The present invention also provides paper obtained with said method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.