Run “g” of Table II, carried out under preferred con
ditions in accordance with this invention, satisfactorily
produced puri?ed poly-e-caproamide of quality desired
‘for the melt spinning of ?laments. Thus, for example,
poly-e-caproamide puri?ed in accordance with run “g"
hereof can, after thorough drying as in Example 1, be
melted and extruded at 255° C. through a multi-hole spin
neret, quenched and drawn 5-fold at speeds greater than
250 yards per minute to yield an unbroken continuous
?lament yarn having a tenacity greater than 4 gnams per
denier. By way of comparison, poly-e-caproamide con
taining as much as an average of 2% by weight of hot wa
ter-extracti-ble material, under the same yarn fabricating
conditions, shows frequent yarn breaks during ‘fabrication
and forms yarn products having unacceptably low tensile
strength.