{HEAD ~ Reaction} of the mono hydroxy functional monol with the isocyanate terminated intermediate is monitored by {TAIL ~ isocyanate absorbance band} by using a Fourier transform infrared spectrometer and isocyanate titration 
{ HEAD ~ Reaction } of the mono hydroxy functional monol with the isocyanate terminated intermediate is monitored by { TAIL ~ isocyanate absorbance band } by using a Fourier transform infrared spectrometer and isocyanate titration
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH