abstract |
(57) Abstract: [PROBLEMS] To provide a urethane prepolymer having excellent weather resistance, good compatibility with a polyol, and good reactivity. A urethane prepolymer having an active isocyanato group at a terminal obtained by reacting 2,5- and / or 2,6-diisocyanatomethylbicyclo [2,2,1] heptane with a polyol. |