Lupranol 1200 Polypropyleneglycol BASF-Elastogran Polyurethane (PU) - Prepolymers >> Polyether >> PPG Lupranol 1200 is a polypropyleneglycol with an average molecular weight of 450. Lupranol 1200 is used for the production of polyurethane foams and elastomers. Polypropyleneglycol. Used for the production of rigid polyurethane elastomers.