Electrodialysis treatment
US5643430A · kind A · utility
7Cited by
7References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 3, 1995 |
| Grant date | Jul 1, 1997 |
| Priority date | — |
| Expiry date | Feb 3, 2015 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for reducing the content of organic and inorganic halogen in an aqueous solution of a nitrogen-containing epihalohydrin-based resin, in which process the aqueous resin solution is subjected to an electrodialysis treatment. The aqueous resin solutions obtained by the process are used as additives in the production of paper, board and paper board, in particular as wet-strength agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.