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