Lubricating grease comprising metal soaps and metal complex soaps based on r-10-hydroxyoctadecanoic acid

A grease composition comprising:

• a) at least one base oil;
• b) at least one additive;
• c) at least one thickener, wherein said at least one thickener is a metal soap, or a metal complex soap or both composed of at least one alkali or alkaline earth metal ion or both and at least one carboxylate formed from a C16 to C18 fatty acid, wherein the C16 to C18 fatty acid comprises at least R-10-hydroxyoctadecanoic acid and the 10-hydroxyoctadecanoic acid has an enantiomeric purity with respect to the R-isomer of greater than 80 wt. %;
• wherein the C16 to C18 fatty acid consists of greater than 50 wt. % of 10-hydroxyoctadecanoic acid;
• and
• wherein the composition comprises:
• a) 55 to 98 wt. % of the base oil;
• b) 0.5 to 40 wt. % of the additive(s);
• and
• c1) 1.5 to 25 wt. % of metal soap or
• c2) 1.5 to 40 wt. % of the metal complex soap comprising 0.1 to 20 wt. % of complexing agent.