A process for preparing {HEAD ~ a Polyamide polymer} based on a dicarboxylic acid and {TAIL ~ a diamine} by polycondensation in an extruder, which comprises 
based on
A process for preparing { HEAD ~ a Polyamide polymer } based on a dicarboxylic acid and { TAIL ~ a diamine } by polycondensation in an extruder , which comprises
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH