{HEAD ~ The copolymers} have utility as compatibilizers for {TAIL ~ blends} of polyphenylene ether and polyetherimide 
{ HEAD ~ The copolymers } have utility as compatibilizers for { TAIL ~ blends } of polyphenylene ether and polyetherimide
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH