Quaternary vinylamine-containing polymers as additives in papermaking
US8518215B2 · kind B2 · utility
4Cited by
14References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2010 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Jun 18, 2031 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H19/24
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Vinylamine-containing polymers are disclosed where the amine groups are substituted with cationic functional groups. Processes for preparing such polymers, as well as compositions comprising such polymers are also disclosed. Among other applications, these polymers can be used in papermaking applications as dry strength additives, wet strength additives, retention aids, drainage aids, and pitch and stickies control agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.