Repulpable wet strength resins for paper and paperboard
US5567798A · kind A · utility
23Cited by
17References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1994 |
| Grant date | Oct 22, 1996 |
| Priority date | — |
| Expiry date | Sep 12, 2014 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/55
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A composition of matter (resin) useful for imparting wet strength to paper products is prepared from a polyamine, a polycarboxylic acid or ester, a dialdehyde and epichlorohydrin. Wet strengthened paper products made using the resin are more easily repulped than paper products made with conventional wet strength agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.