A process 1, in which {HEAD ~ the reaction} of {TAIL ~ the terephthaloyl chloride} with the para phenylenediamine solution is carried out continuously 
A process 1 , in which { HEAD ~ the reaction } of { TAIL ~ the terephthaloyl chloride } with the para phenylenediamine solution is carried out continuously
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH