R.t. Vanderbilt Company, Inc.

Vanderbilt Chemicals, LLC

Brian W Stunkel

Steven G Donnelly

Kevin J Chase

Thomas J Karol

John M Demassa

Glenn A Mazzamaro

Gaston A Aguilar

A lubricant composition with improved antioxidant capability is provided by way of an additive composition containing a metal free sulfur-containing compound, an aromatic amine, and a hindered amine. Particularly effective metal-free sulfur-containing compounds include ashless dithiocarbamates, such as methylenebis(dibutyldithiocarbamate), and sulfurized fatty acids.

Ashless lubricant composition

An antioxidant lubricant composition has at least 50 wt % of a lubricating base oil and

Lubricant antioxidant compositions containing a metal compound and a hindered amine

Novel molybdenum compounds are prepared by reacting a hindered amine with a molybdenum source, in the presence of one of (a) water, (b) a diol and water, and (c) the reaction product of a fatty oil and a multifunctional amine, and water. Lubricant compositions containing these new compounds are more stabilized against oxidation and have improved friction reducing properties. Synergy is observed when the novel compounds are combined with a diaryl amine in a lubricant composition.

Molybdenum compounds

Molybdenum-free lubricating compositions are provided, having an antioxidation additive composition based on a combination of (1) alkylated diphenylamine (APDA), (2) polyamine dispersant, and (3) monoglyceride, ethoxylated amide, or mixtures thereof. Further synergy is achieved when component (3) is borated, allowing a reduction in phosphorus levels to below 0.08% or even a phosphorus-free composition.

Antioxidant synergist for lubricating compositions

A lubricating composition includes, in weight %, at least 90 percent of a vegetable oil, and an additive composition including:

Vegetable oil lubricating composition

This invention relates to improved antioxidant antiwear/extreme pressure compositions consisting of (a) methylenebis(di-n-butyldithiocarbamate) and (b) a diphenylamine derivative of tolutriazole or benzotriazole wherein the (a):(b) mass precent ratio ranges from above about 4:1 to about 50:1 and lubricating compositions containing same.

Antioxidant, antiwear/extreme pressure additive compositions and lubricating compositions containing the same

Disclosed are synergistic antioxidant compositions composed of (1) amine salts of alkyl phosphates and (2) ethylenediamine, ammonium or metal salts of alkylarylsulfonates. The antioxidant compositions are useful for formulating zinc-free antiwear hydraulic fluids and gear lubricating oils in conjunction with thiophosphate type antiwear agents, corrosion and rust inhibitors.

Combination of phosphate based additives and sulfonate salts for

This invention relates to synergistic rust inhibiting compositions consisting of (a) N-acylsarcosine compound, (b) dicarboxylic acid having 6 to 48 carbon atoms, and (c) an amine selected from primary, secondary or tertiary amines or imidazoline compounds. Lubricating compositions containing the synergistic rust inhibiting compositions possess good antirust stability.

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Stamford, CT, United States of America

Brian W Stunkel