ULTRAFILTRATION MEMBRANES AND THE PROCESS FOR ULTRAFILTRATION MEMBRANES AND THE PROCESS FOR THEIR PREPARATION

摘要

Semi-permeable, e.g., ultrafiltration membranes are shaped from a solvent solution of an admixture of at least one polyether comprising recurring units of the structural formula: -O-Ar-O-CH2-CHOH-CH2-(I) and at least one polyether comprising recurring units of the structural formula: -O-E-R-E'mO-G-SO2-G'-(II) wherein Ar, E, E', G and G' are divalent aromatic radicals, m is an integer, and R is a valence bond or a member selected from the group comprising -CO-, -O-, -SO2- and a divalent hydrocarbon.