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