Filtration medium sequence for biomaterial purification
Assignee3M Innovative Properties Company
InventorsJonathan F. Hester, Angelines A. Castro Forero, Gregory M. Jellum, Jerald K. Rasmussen, Kannan Seshadri, Clinton P. Waller, Jr.
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Abstract
Described herein is a filtration media comprising: (i) a first filtration medium comprising an anion exchange nonwoven substrate, wherein the anion exchange nonwoven substrate comprises a plurality of quaternary ammonium groups; and (ii) a second filtration medium comprising a functionalized microporous membrane wherein the functionalized microporous membrane comprises a plurality of guanidyl groups; wherein the first filtration medium is positioned upstream of the second filtration medium.
Claims20
A filtration medium sequence comprising:
- a first filtration medium comprising an anion exchange nonwoven substrate, wherein the anion exchange nonwoven substrate comprises a plurality of quaternary ammonium groups;
- and
- (ii) a second filtration medium comprising a functionalized microporous membrane wherein the functionalized microporous membrane comprises a plurality of guanidyl groups;
- wherein the first filtration medium is positioned upstream of the second filtration medium.
Dependencies are inferred from the claim text.