Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Nitrogen and heavy metal – or nitrogen and aluminum – in the...
Patent
1997-04-18
2000-01-04
Howard, Jacqueline V.
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Nitrogen and heavy metal, or nitrogen and aluminum, in the...
508367, C10M13500
Patent
active
060109874
ABSTRACT:
The invention is a method for improving the friction reduction and friction reduction retention performance of a lubricating oil comprising adding to the lubricating oil a trinuclear molybdenum sulfur compound selected from the group of trinuclear molybdenum compounds preferably those having the formulas Mo.sub.3 S.sub.7 (dtc).sub.4 and Mo.sub.3 S.sub.4 (dtc).sub.4 and mixtures thereof wherein dtc represents independently selected diorganodithiocarbamate ligands containing independently selected organo groups and wherein the ligands have a sufficient number of carbon atoms among all the organo groups of the compound's ligands are present to render the compound soluble or dispersible in the lubricating oil. Concentrates of the composition are also included in the invention.
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Leta Daniel Paul
McConnachie Jonathan M.
Pictroski Charles Frederick
Stiefel Edward Ira
Exxon Research and Engineering Co.
Howard Jacqueline V.
Scuorzo L. M.
Toomer Cephia D.
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