Ion-exchange membrane and method for producing same
US9266069B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 13, 2010 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Feb 28, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/124
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
There is provided an ion-exchange membrane comprising an ion-exchange layer made of a cationic polymer and/or an anionic polymer and a supporting layer, wherein the ion-exchange layer is formed on the supporting layer by printing. Such an ion-exchange membrane exhibits excellent anti-organic fouling and low membrane resistance, thereby high efficient and long-time stable electrodialysis can be achieved. Formation of the ion-exchange layer as a charge-mosaic layer consisting of the cationic polymer domains and the anionic polymer domains provides a charge-mosaic membrane exhibiting excellent electrolyte permselectivity and mechanical strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.