{HEAD ~ Another possible method} is to remove {TAIL ~ the olefin treated titanium halide} from the solvent, wash it, if necessary, to remove excess olefin, and then add the electron donor either directly or in solution with an inert solvent 
is to remove
{ HEAD ~ Another possible method } is to remove { TAIL ~ the olefin treated titanium halide } from the solvent , wash it , if necessary , to remove excess olefin , and then add the electron donor either directly or in solution with an inert solvent
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH