Lupranol 1100 Polypropyleneglycol BASF-Elastogran Polyurethane (PU) - Prepolymers >> Polyether >> PPG Lupranol 1100 is a polypropyleneglycol with an average molecular weight of 1100. Lupranol 1100 is used for the production of polyurethane foams and elastomers. Polypropyleneglycol. Used for the production of rigid polyurethane elastomers.