PROCESS FOR DRYING WATER-WET POLYCARBONATE MEMBRANES

摘要

ABSTRACTThe invention is a process for drying water-wetpolycarbonate membranes by contacting the membrane witha pretreatment fluid containing at least one C1-4alcohol to remove residual solvent and non-solventand/or tighten the membrane discriminating layer,followed by drying the membrane with air or an inert gasto evaporate the alcohol and/or water.35,596-F