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