Metallation is accomplished with an alkyllithium compound and at least one activating reagent after a slurry of the copolymer in a nonreactive, saturated, nonpolar hydrocarbon solvent is first heated to a temperature greater than 80° Centigrade to provide {HEAD ~ the polymer} with an expanded settling volume greater than {TAIL ~ its original settling volume} 
Metallation is accomplished with an alkyllithium compound and at least one activating reagent after a slurry of the copolymer in a nonreactive , saturated , nonpolar hydrocarbon solvent is first heated to a temperature greater than 80 ° Centigrade to provide { HEAD ~ the polymer } with an expanded settling volume greater than { TAIL ~ its original settling volume }
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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL