▎ 摘　　要

NOVELTY - Porous polymeric membrane comprises a polymer having mixed in it 0-80 wt.% carbonaceous material, where the membrane exhibits (a) a bubble point of 2-200 psi when measured using ethoxy-nonafluorobutane HFE 7200 at 22° C, (b) an isopropanol flow time of 20-10000 seconds/500 ml when measured at 14.2 psi, and (c) a G25 particle retention of 25-100%. The carbonaceous material comprises activated carbon, carbon black, carbon nanotubes, or graphene. The polymer comprises polyamides, polyimides, polyolefins, polyether-sulfones, poly acrylates, polyesters, celluloses, cellulose esters, polycarbonates, poly(phenylene oxide), poly(styrene), and/or halogenated polymers. USE - The porous polymeric membrane is useful in a filter for removing impurities from liquid compositions, e.g. alcohols and ammonium hydroxide e.g. aqueous ammonia. ADVANTAGE - The membrane is capable of removing trace amounts of certain amines and metal cations from such solutions. It provides liquid solutions of alcohols, e.g. 1-4C alkanols, and ammonium hydroxide of extremely high purity. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: filter comprising the porous polymeric membrane; composite membrane; preparing a porous polymeric membrane; removing impurities from a liquid composition; and purified liquid composition.