Method for preparing a solution of a sulfonated polymer and an amino-phosphonic acid in an aprotic solvent
US10556996B2 · kind B2 · utility
0Cited by
3References
12Claims
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Key dates
| Filing date | May 4, 2015 |
| Grant date | Feb 11, 2020 |
| Priority date | — |
| Expiry date | Dec 3, 2036 |
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 sulfonic 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.