Poly para phenyleneterephthalamide compositions, their preparation and a process for the production of {HEAD ~ fibres} from {TAIL ~ these compounds} 
Poly para phenyleneterephthalamide compositions , their preparation and a process for the production of { HEAD ~ fibres } from { TAIL ~ these compounds }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL