Positively charged membrane
US6780327B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2001 |
| Grant date | Aug 24, 2004 |
| Priority date | — |
| Expiry date | Dec 12, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2325/36
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides a positively charged microporous membrane having a protein binding capacity about 25 mg/ml or greater comprising a hydrophilic porous substrate and a crosslinked coating that provides a fixed positive charge to the membrane. The present invention further provides a positively charged microporous membrane comprising a porous substrate and a crosslinked coating comprising pendant cationic groups. The membranes of the present invention find use in a variety of applications including ion-exchange chromatography, macromolecular transfer, as well as detection, filtration and purification of biomolecules such as proteins, nucleic acids, endotoxins, and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.