Lupraphen 8103 Difunctional, aliphatic, polyester polyol BASF-Elastogran PU - Polyols >> Polyester Lupraphen 8103 is a difunctional, aliphatic, polyester polyol. Lupraphen 8103 is used for the production of compact and cellular polyurethane elastomers. It is particularly suitable for the production of shoe sole systems. Difunctional, aliphatic, polyester polyol. Used for the production of compact and cellular polyurethane elastomers.