Vairo, Giuseppe; Di Serio, Martino; Santacesaria, Elio; Tesser, Riccardo; Cammarota, Francesco; Mandato, Nicola. (DOW Italia srl) PCT Int. Appl. (2008) WO 2008037400 (A1)
The invention relates to a process for the preparation of polyester polyols, to a process for the preparation of a polyurethane elastomer and to using such polyester polyols for the preparation of a polyurethane elastomer. The polyester polyols obtained by the process of the invention show no degradation due to hydrolysis and result to be substantially uncoloured and free from the catalyst.