| abstract |
A polyurethane composition is provided. The polyurethane composition comprises one polyisocyanate component comprising at least one aromatic polyisocyanate compound and/or isocyanate end-capped prepolymer formed by the reaction of said at least one aromatic polyisocyanate compound and at least one first polyol; at least one second polyol; and a crosslinker having at least one nitrogen atom and at least one secondary and/or tertiary hydroxyl group. The polyurethane product prepared by using the polyurethane composition can achieve improved operation time, aging resistance, weathering resistance, color stability, processability, and storage stability. A method for preparing the polyurethane product and a method for improving the performance property of the polyurethane product are also provided. |