| Trimethylolpropane fatty acid triester(TFATE) was synthesized using corn oil deodorizer distillate as raw material, then TFATE was transesterified with glyceryl triacetate (GTA) to produce renewable biolubricant base oil trimethylolpropane fatty acid diester-monoacetate (TMP-DE-MA). Trimethylolpropane potassium salt (TMP-K) was used as catalyst, and the effects of reaction time, reaction temperature, molar ratio of reactants and catalyst dosage on the content of TMP-DE-MA were discussed. The results showed that the optimal synthesis conditions were obtained as follows: vacuum 800 Pa, reaction time 3 h, reaction temperature 190[KG-*8]℃, molar ratio of TFATE to GTA 1∶1.25, and molar ratio of TMP-K to GTA 0.075∶1. Under the optimal conditions, the content of TMP-DE-MA in the product was 52.56%. The average relative molecular weights of TFATE, TMP-DE-MA and trimethylolpropane fatty acid monoester-diacetate (TMP-ME-DA) analysed by electrospray ionization mass spectrometry (ESI-MS) were 905.9, 690.8 and 435.4, respectively. |
