SEPARATORS FOR ELECTROLYTIC CELLS AND PROCESSES FOR MAKING

摘要

A process for forming an electrolyte-permeable diaphragm on a foraminous structure for use in an electrolytic cell, comprising the steps of i) making a slurry from an aqueous medium and containing as undissolved, particulate materials polyfluoroethylene fibers, a polymeric solids dispersion, and talc, wherein the ratio by weight in the slurry of talc to the polymeric solids of said polymeric solids dispersion is less than 4.5, ii) depositing a diphragm on the foraminous structure by drawing the slurry therethrough, iii) drying the diaphragm, and iv) sintering at least the polymeric solids from said dispersion in the diaphragm.