Runs c-h inclusive were carried out under process
conditions outside our preferred ranges.
The conditions used inthese runs require longer contact times than are
desirable, and/ or produce polymer having more unex
tr-acted material than desired for easy spinning of high quality ?laments, and/ or produce in some measure un
desirable process or product effects but these conditions . nevertheless can, be used in accordance with, our inven
tion when requirements of economics and/or quality are
lower than maximum and will lead to useful results. The
sharp falling off of results at conditions outside our
speci?ed ranges of conditions can be recognized from
the trends shown by the runs of Table I.