Method for stabilizing aqueous solutions of cationic thermosetting polyamide-epichlorohydrin resins
US4853431A · kind A · utility
22Cited by
18References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 7, 1987 |
| Grant date | Aug 1, 1989 |
| Priority date | — |
| Expiry date | Dec 7, 2007 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for stabilizing an aqueous solution of a thermosetting polyamide-epichlorohydrin resin useful for imparting wet strength to paper by adding a mixture of a weak acid and a strong acid to said aqueous solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.