Lube Base Oil Comprising X-Type Diester Acid Dimer and Method for Preparing the Same

摘要

The present invention relates to a preparation method of a lube base oil including a conversion of biomass fat to a fatty acid; a separation of a C18 unsaturated fatty acid from the fatty acid; a maximization of an oleic acid content through partial hydrotreating of the C18 unsaturated fatty acid; a synthesis of a dimer or higher-order oligomer through an oligomerization of the oleic acid; and an esterification of the oligomer, and relates to a lube base oil prepared therefrom. The lube base oil of the present invention contains an x-type diester dimer and has an excellent low-temperature stability and a high biodegradability resulting from its chemical structure, thus being ecofriendly.

主权项

1. A preparation method of a lube base oil, the method comprising:
converting biomass fat to a fatty acid; separating a C18 unsaturated fatty acid from the fatty acid; maximizing an oleic acid content through partial hydrotreating of the C18 unsaturated fatty acid; synthesizing an oligomer which is a dimer or a higher-order oligomer through an oligomerization of the oleic acid; and esterifying the oligomer, wherein the lube base oil includes an x-type diester dimer represented by the following Chemical Formula 1: where in the Chemical Formula 1, R represents an alkyl group, a ketone group, an aldehyde group or an ester group having 1 to 12 carbons.