{TAIL ~ The alkyl alcohol} is removed and the excess ethanolamine is reacted with ethylene or propylene {HEAD ~ carbonate} to form the urethane diol 
{ TAIL ~ The alkyl alcohol } is removed and the excess ethanolamine is reacted with ethylene or propylene { HEAD ~ carbonate } to form the urethane diol
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH