Lupraphen 8108 Difunctional aliphatic, polyester polyol BASF-Elastogran Polyurethane (PU) - Polyols >> Polyester Printing Inks & Varnishes >> Textile Printing Lupraphen 8108 is a difunctional, aliphatic polyester polyol. Lupraphen 8108 is used for the production of polyurethane flexible integral skin foams, elastomers and textile coatings. Difunctional, aliphatic polyester polyol. Used for the production of polyurethane flexible elastomers and textile coatings.