DIAPHRAGM WOVEN FROM POLYVINYLCHLORIDE; METHOD FOR MAKING IT AND ITS USE IN THE ELECTROLYSIS OF HYDROGEN CHLORIC ACID

摘要

Heat-set woven diaphragms based on polyvinyl chloride, well adapted for the electrolysis of hydrochloric acid, comprise: (a) a combination of warp threads and weft threads woven into a cloth weave and having a number of crossings per square centimeter ranging from 270 to 350; (b) warp threads and the weft threads which comprise a mixture of atactic polyvinyl chloride and superchlorinated polyvinyl chloride; (c) an average thickness of from 0.5 to 0.7 mm; and (d) high creasing resistance.