The polyurethane composition is formed from the reaction product of {TAIL ~ at least a prepolymer} of a polyisocyanate and a polyol, and a diamine curing {HEAD ~ agent} 
The polyurethane composition is formed from the reaction product of { TAIL ~ at least a prepolymer } of a polyisocyanate and a polyol , and a diamine curing { HEAD ~ agent }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD