Maha L. Shrestha1,2,*, Mihail Ionescu1, Xianmei Wan1, Thomas Upshaw3
Journal of Renewable Materials, Vol.6, No.6, pp. 630-641, 2018, DOI:10.7569/JRM.2018.634106
Abstract Aromatic-aliphatic polyols were obtained previously from the thiol-ene reactions of propoxylated cardanol with hydroxyalkyl mercaptans; these aromatic-aliphatic polyols were then utilized in the preparation of rigid polyurethane foams with excellent properties. The current work describes a variant of cardanol polyol synthesis by thiol-ene reactions in three steps. The first step is propoxylation of cardanol by reacting cardanol with propylene oxide; the second step is mercaptanization of propoxylated cardanol by reacting double bonds with hydrogen sulfide; and the third step involves the addition of the thiol groups of mercaptanized propoxylated cardanol to the double bonds of More >
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