Polyarylether compositions bearing zwitterion functionalities
US7985339B2 · kind B2 · utility
7Cited by
16References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 25, 2008 |
| Grant date | Jul 26, 2011 |
| Priority date | — |
| Expiry date | Aug 12, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249958
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for making a polysulfone having zwitterionic functionality comprising reacting a piperazine amine functionalized polysulfone with sultone is described as are blends with other polymers. Membranes containing polysulfones having zwitterionic functionality are also provided. Membranes thus formed are used in hemodialysis, hemofiltration, and water purification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.