| abstract |
A polyurethane composition is provided. The polyurethane composition includes: (A) one or more prepolymers prepared by reacting at least one isocyanate compound with a first polyol component; and (B) a second polyol component; wherein at least one of the first polyol component and the second polyol component comprises an ester/ether block copolymer polyol, the Ester/ether block copolymer polyols are synthesized by reacting the starting material polyether polyols with C4 - C20 lactones. A foamable or non-foamable polyurethane product prepared by using the polyurethane composition can achieve suppressed internal heat accumulation, high thermal stability, improved curing speed, light stability, thermal stability, and excellent mechanical strength. Also provided is a method for preparing the polyurethane composition and a method for improving the performance characteristics of the polyurethane product. |