US7842653: Process for the preparation of lubricants

The invention provides an improved process for the preparation of lubricants from vegetable oil or fat obtained from animal source. The invention involves a reaction of vegetable oil or fat with an alcohol in the presence of a double metal cyanide catalyst, at a temperature in the range of 1500 to 2000 C for a period of 3-6 hrs to obtain the desired bio-lubricant.