The process 16 where {HEAD ~ the reaction} is conducted at {TAIL ~ a temperature} between about 220° and about 300° C 
is conducted at
The process 16 where { HEAD ~ the reaction } is conducted at { TAIL ~ a temperature } between about 220 ° and about 300 ° C
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH