Fibrous nonwoven web

Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...

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210652, 210654, 21050038, 210506, 210508, 210509, 428357, 428395, 428338, B01D 6100

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active

057097984

ABSTRACT:
The present invention provides a polymeric, particularly aramid, fibrous nonwoven web having a relatively small pore size. The present inventive fibrous nonwoven web preferably has a high titer reduction with respect to bacteria such as Pseudomonas diminuta and viruses as exemplified by PR772 coliphage. The present invention further provides a method of filtering a fluid by passing a fluid through the present inventive fibrous nonwoven web, as well as a filter element incorporating the present inventive fibrous nonwoven web.

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WPI Accession No. 85-220757/36, Derwent Publications Ltd. abstract (JP 60-142860 Jul. 29, 1985).
"Standard Test Methods for Pore Size Characteristics of Membrane Filters By Bubble Point and Mean Flow Pore Test", American Society For Testing & Materials F316-86 (Apr. 1986) .

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