Modified vinylamine-containing polymers and their use in papermaking
US9783933B2 · kind B2 · utility
4Cited by
22References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 13, 2016 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | May 13, 2036 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Provided is a method of making paper and paperboard. In particular graft copolymers of vinyl monomers and functionalized vinylamine-containing base polymers by Michael addition are added to a paper furnish. The composition can be used alone or in combination with other additives for use in paper making and to improve paper making processes such as paper dry and wet strength properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.