3. Process of claim 2 wherein the temperature at the
bottom of the extraction zone is in the range between
about 97° C. and ‘about 130° C.; the temperature at the
top of the extraction zone is in the range between about
80° C. and about/100° C. and is at least about 10° C.
‘lower than the temperature at the bottom; the depth of
the extraction zone is in the range between about 20
ft; and about 60 it, all dimensions of the particles of
poly e-caproamide fed are in the range between about 0.05
inch and about 0.25 inch; and the total pressure of the
atmosphere over the extraction zone is in the range be
tween about 1 atmosphere and about 3 atmospheres above
the vapor pressure exerted by water at the average temperature prevailing at the bottom or the extraction zone,
and is maintained constant by automatic regulation of
the inert gas pressure.