Method for preparing a solution of a sulfonated polymer and an amino-phosphonic acid in an aprotic solvent
US9023557B2 · kind B2 · utility
0Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 23, 2007 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Aug 23, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method is disclosed for production of solutions of aminophosphonic acids and polymeric sulphonic acids in aprotic solvents. Membranes for membrane methodologies are produced from said solutions. Said membranes can also be doped with phosphoric acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.