Poly-G® polyols offer high molecular weights and excellent resilience, difficult to obtain with conventional, all-propylene oxide polyols. Poly-L® polyether polyols are high quality propylene oxide based multi-functional polyols that contain very low levels of terminal unsaturation.
Conventional propylene oxide based polyether polyols are prepared with KOH catalysis. This manufacturing method produces terminally unsaturated end groups forming polyols that contain monoalcohols. These monofunctional or monol chains act as chain terminators in polyurethane formation producing polyurethanes having low molecular weight and inferior physical properties. The new DMC catalyst technology also allows production of much higher molecular weight polyethers than possible with KOH catalysis. In contrast Poly-L® polyols are manufactured using an organometallic catalyst. With this method, polyols with very low levels of terminal unsaturation and monol content are produced. Consequently, polyurethanes with higher molecular weight can be made from Poly-L® polyols. These Poly-L® based polyurethanes have significant advantages in performance.
