B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
183/109
B01D 39/16 (2006.01) B01D 39/20 (2006.01) B01D 69/10 (2006.01) D04H 1/54 (2006.01) D21H 27/08 (2006.01)
Patent
CA 1276890
ABSTRACT A method for filtering liquid or gaseous materials where the filtration is conducted with a porous filter media prepared from an aqueous wet-laid, fiber-reinforced composite sheet comprising a heat fusible polymer, reinforcing fibers and a binder. The random fiber composite sheet can be selectively lofted or recompressed to form filter media having controlled porosity. Also, a membrane support is prepared by applying or treating the fiber-reinforced composite sheet having controlled porosity with a discriminating membrane layer. 33,507A-F
509567
Burmester Alan F.
Diehl Charles F.
Wessling Ritchie A.
Yats Larry D.
Burmester Alan F.
Diehl Charles F.
Smart & Biggar
The Dow Chemical Company
Wessling Ritchie A.
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