Darby & Darby
Method for modifying PVC separation membranes
 A modified polyvinyl chloride (PVC) separation membrane and a method for its preparation. The membrane has improved water permeability, contamination resistance, and hydrophilic properties. The method comprises contacting a PVC membrane with a treating solution containing a compound having an amino functional group, preferably in the presence of an alkali alcoholate catalyst, and heat-treating the PVC membrane at elevated temperature. The membrane can be dipped in the treating bath at high temperature or dipped in solution at room temperature and heat-treated after removal from the treating bath. 
Industrial Technology Research Institute
B B
B01D B01D
inventional inventional
Tze-Chiang Chin-Chih Tsai-Wie
Chiao Chou Tseng