Synthesis of trimethylolpropane trioleate and their emulsification-resistive properties

Trimethylolpropane trioleate was synthesized by oleic acid and trimethylolpropane as the raw material, SnCl₂·2H₂O as catalyst, toluene as watercarrying. The optimum reaction condition obtained through the experiments were found as follows: the molar ratio of OA to TMP was 3.1:1, the amount of SnCl₂·2H₂O was 2%, with toluene 2ml, reacted for 2h at temperature 170°C and vacuum degree 0.07Mpa. The results show that in the optimum conditions, the AE value of emulsification-resistive was 438.81, the ester value was 91.65%, the acid value was 2.41mgKOH/g, according with the standard of GB/T264. The structure of product was identified by IR.