Accordingly, {TAIL ~ the molar ratio} of ethylene to feed {HEAD ~ material} may range from greater than about 0.8/1 to typically less than about 20/1 
Accordingly , { TAIL ~ the molar ratio } of ethylene to feed { HEAD ~ material } may range from greater than about 0.8/1 to typically less than about 20/1
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH