| abstract |
PROCESS FOR THE PRODUCTION OF SUPERCHLORINATED POLYVINYL CHLORIDE AND PRODUCT THEREOF. THE PVC IS SWOLLEN IN A FIRST STEP BY INSUFFLATING WITH GASEOUS CHLORO-HYDROCARBON OF WHICH CHLOROFORM IS PREFERRED. THE SWOLLEN PVC IS SUSPENDED IN A CONCENTRATED AQUEOUS SOLUTION OF HCL. CHLORINE IS THEN PASSED INTO THE SUSPENSION TO ABOUT SATURATION, AFTER WHICH THE SUSPENSION IS IRRADIATED WITH ULTRVIOLET RAYUS, WHILE CHLORINATION IS CONTINUED TO THE DESIRED VALUE. THE PROCESS IS OF RELATIVELY SHORT DURATION, EFFICIENT IN USE OF INGREDIENTS AND REACTANTS, AND GIVES A HIGH QUALITY OF SPVC OF UNIFORM GRANULOMETRY AND PRECISE CONTROL OF CHLORINE PERCENTAGE OF FINISHED PRODUCT. |