{TAIL ~ The methylene chloride} forms a complex with {HEAD ~ the unreacted polyphenylene ether} and with the polyphenylene ether portion of the copolymer 
{ TAIL ~ The methylene chloride } forms a complex with { HEAD ~ the unreacted polyphenylene ether } and with the polyphenylene ether portion of the copolymer
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH