Preparation of lubricant base stock through chemical modification of biodiesel

The epoxidized biodiesel (EBD) was prepared with biodiesel (BD) as raw material, which was then subjected an etherification ring opening reaction with 2-ethyl hexanol over the D001 resin catalyst; the resultant product can be used as the lubricant base stock. The products and material used were characterized by FT-IR and TG; the properties of as synthesized lubricant base stock were compared with those of EBD and the lubricant from 150SN mineral oil. The results showed that the as-synthesized lubricant base stock is excellent in terms of thermal stability, viscosity-temperature behavior, viscosity index, oxidation stability, and wear resistance and loading capacity. Moreover, D001 resin as a catalyst exhibits good reusability; it remains high active after being used for five times.