Lupranol 2001 Tetrafunctional polyether polyol BASF-Elastogran PU - Polyols >> Polyether Lupranol 2001 is a tetrafunctional, highly reactive polyether polyol. It contains primary hydroxyl groups. It is considerably more cross-linked than Lupranol 2090 and 2095. Lupranol 2001 is used for the production of highly elastic polyurethane flexible foams. Tetrafunctional, highly reactive polyether polyol containing primary hydroxyl groups.