Aqueous solution of cationic copolymers derived from acrylamide, preparation method and use
US9725532B2 · kind B2 · utility
0Cited by
6References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 15, 2015 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Jan 15, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2201/54
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a process for the preparation of an aqueous polymer solution containing at least one cationic or amphoteric (co)polymer, comprising the following steps: The invention also concerns the use of this polymer solution as a flocculant, retention and/or drainage agent, and dry strength resistance in a paper manufacturing process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.