{HEAD ~ Said copolymer} is preferably prepared by {TAIL ~ a step wise aqueous emulsion polymerization} with styrene and modifier being incrementally added 
is preferably prepared by
{ HEAD ~ Said copolymer } is preferably prepared by { TAIL ~ a step wise aqueous emulsion polymerization } with styrene and modifier being incrementally added
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH