Polyvinylidene fluoride porous membrane and a method for produci

Details Polyvinylidene fluoride porous membrane and a method for produci Polyvinylidene fluoride porous membrane and a method for produci

1990-01-10

1991-06-11

Spitzer, Robert

Liquid purification or separation

Filter

Material

21050023, 264 41, B01D 5322, B01D 7134

Patent

active

050229907

ABSTRACT:
A porous membrane comprising a polyvinylidene fluoride resin and having a uniform, three-dimensional, network pore structure. The membrane has excellent chemical resistance, excellent filtering characteristics and excellent mechanical properties. The porous membrane can be produced by blending a polyvinylidene fluoride resin, an organic liquid and a powdery hydrophobic silica, subjecting the resultant blend to melt-molding to form a membrane, and extracting the organic liquid and the hydrophobic silica from the melt-molded membrane.

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