When supercritical extraction is used, conditions are such that {TAIL ~ fused mesophase pitch} is obtained directly making {HEAD ~ the mesogen fusion step} unnecessary 
When supercritical extraction is used , conditions are such that { TAIL ~ fused mesophase pitch } is obtained directly making { HEAD ~ the mesogen fusion step } unnecessary
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH