Repulpable wet strength paper
US6355137B1 · kind B1 · utility
55Cited by
11References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 18, 2000 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Oct 18, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31725
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A paper composition comprising: at least one cationic thermosetting resin comprising the reaction product of (i) at least one polyamide having secondary amine groups made from reactants comprising at least one polyalkylene polyamine, an acid component comprising succinic acid and optionally at least one dicarboxylic acid (other than succinic acid), and (ii) epihalohydrin. The paper is capable of being repulped substantially faster than paper that is substantially the same except that it contains conventional wet strngth resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.