Abstract:
A PROCESS FOR THE PRODUCTION OF HIGH MOLECULAR WEIGHT NYLON 6,6 BY CONTINUOUS FURTHER CONDENSATION OF LOW MOLECULAR WEIGHT NYLON 6,6 IN A SELF-CLEANING SCREW EXTRUDER REACTOR PROVIDED WITH AT LEAST ONE DEGASSING ORIFICE AT ELEVATED TEMPERATURE AND A PRESSURE OF FROM 50 MM. HG TO 2 ATMOSPHERES GAUGE AND WHILE SUPPLYING THROUGH THE SCREWS AN AMOUNT OF ENERGY OF FROM 0.02 TO 0.2 KILOWATT HOURS PER KILOGRAM OF POLYAMIDE.