Polymeric microfiber filter medium

B - Operations – Transporting – 01 – D

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B01D 39/16 (2006.01) C08F 255/02 (2006.01) C08F 283/02 (2006.01) C08F 283/04 (2006.01) D06M 15/267 (2006.01)

Patent

CA 2030199

A filter medium is provided comprising a fi- brous matrix to whose surfaces is grafted a super- strate comprising a polymer with quaternary ammonium groups and made from an ethylenically unsaturated monomer containing a quaternary ammonium or amino group, the filter medium having a positive zeta potential at pH 7 and preferably an enhanced Latex Adsorption Capacity together with low extractables and quick rinse-up.

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