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