a double ester composition prepared by a three - step process comprising the non - ordered steps of a homopolymerization , a transesterification , and a capping , wherein the ordered steps include a sequence of homopolymerization , capping , and transesterification , or a sequence of transesterification , homopolymerization , and capping . the ester is useful particularly as a biolubricant having a high level of renewable carbons , and may exhibit particularly desirable properties relating to pour point , thermo - oxidative stability , and viscometric behavior due to reduced or eliminated levels of unsaturation in the final double esters .