BONDED NON-ASBESTOS CHLOR-ALKALI DIAPHRAGM

摘要

A bonded, non-asbestos chlor-alkali diaphragm comprising one or more water- wettable materials and one or more chemically-resistant materials, which is characterized by having a Macmullin number and average diaphragm thickness such that the product of these is between 5 and 30 millimeters when the average diaphragm thickness is measured in millimeters, and by a median pore size between 0.1 microns and 1 micron, wherein one or more of the chemically - resistant materials is or are coated with a durable, adherent coating of an ion-containing polymer which is bonded into the diaphragm on such materials.