Repulpable wet strength resins for paper and paperboard
US5585456A · kind A · utility
40Cited by
12References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 8, 1995 |
| Grant date | Dec 17, 1996 |
| Priority date | — |
| Expiry date | Sep 8, 2015 |
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.