Patent ID: 7850841

Claim:
Process for producing base oil, characterized in that a) feedstock comprising at least one aldehyde and/or ketone selected from the group consisting of C1-C40 aldehydes, C3-C79 ketones, C2-C40 hydroxy aldehydes and mixtures thereof, is condensed in the presence of an aldol condensation catalyst at temperature ranging from 80 to 400° C. to obtain a condensation product comprising branched unsaturated aldehydes, ketones, or hydroxy aldehydes, respectively, b) the condensation product is hydrodeoxygenated in the presence of a hydrodeoxygenation catalyst under a hydrogen pressure ranging from 0.1 to 20 MPa at a temperature ranging from 100 to 500° C. to obtain paraffins, and then c) the paraffins are hydroisomerized in the presence of an isomerization catalyst under a hydrogen pressure ranging from 0.1 to 20 MPa at a temperature ranging from 100 to 500° C. to obtain base oil, wherein said base oil comprises: i. branched hydrocarbons having carbon numbers of at least C18, ii. at least 90% by weight of saturated hydrocarbons, iii. mononaphthenes not more than 15% by weight iv. fused dinaphthenes and polynaphthenes not more than 1% by weight, v. at least 60% by weight of the saturated hydrocarbons are within the carbon number range of no more than 5.