Preparation of polyester polyols from acidic oil
HE Qin-ling, FU Yun-tao, CONG He-lei, LIN Zhong-xiang*
Journal of Nanjing Forestry University (Natural Sciences Edition) . 2008, (05): 95 -98 .  DOI: 10.3969/j.jssn.1000-2006.2008.05.019