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