PRODUCTION OF ION-EXCHANGE MEMBRANE

摘要

A method of producing an ion-exchange membrane of an organic polymer containing ion-exchange groups or group convertible to ion-exchange groups in which method the membrane is expanded by stretching the membrane in order to increase the surface area per unit weight of the membrane, the membrane containing a liquid medium during the stretching of the membrane, stretched membranes of this type, and their use in an electrolytic cell.