The mixture of deasphalting residue and {HEAD ~ heavy oil results} in a novel dispersion that is suitable for use as {TAIL ~ an asphalt} 
The mixture of deasphalting residue and { HEAD ~ heavy oil results } in a novel dispersion that is suitable for use as { TAIL ~ an asphalt }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL