Stable wet strength resin
US7291695B2 · kind B2 · utility
12Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2004 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Nov 2, 2025 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of stabilizing an aqueous solution of polyaminoamide-epichlorohydrin resin comprising adjusting the pH of the solution to less than about 3 with strong acid and then adding to the solution a weak acid in a mole ratio of total protons available from the weak acid to total protons available from the strong acid of about 0.05 to about 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.