Anionic functional promoter and charge control agent
US6939443B2 · kind B2 · utility
66Cited by
21References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2002 |
| Grant date | Sep 6, 2005 |
| Priority date | — |
| Expiry date | Mar 25, 2023 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/55
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a functional promoter comprising a water-soluble anionic polymer having a molecular weight of at least about 50,000 daltons and a molecular weight charge index value of at least about 10,000, and a cationic strength component. The invention also relates to a paper product made with such a system, and method for imparting wet strength to a paper product with the functional promoter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.