Amoco Corporation

Standard Oil Company (indiana)

Mack W Hunt

Charles T West

Steven Kennedy

Albert R Sabol

Joseph J Valcho

John H Udelhofen

Steven E Lindberg

Cecil G Brannen

A method for preparing a carbonate overbased calcium sulfonate, which method comprises the steps of: (1) forming an initial mixture of a lower molecular weight alkanol, an alkyl or alkaryl substituted sulfonic acid or sulfonate compound, a diluent and a solvent; (2) adding a basic calcium compound to the initial mixture to form a second mixture in which the amount of added calcium is at least about ten times the amount necessary to form a neutral calcium sulfonate; (3) heating the second mixture to reflux temperature; (4) carbonating the second mixture at said reflux temperature to form a carbonated product while simultaneously and continuously removing water produced by the carbonation reaction; (5) after carbonation is stopped, heating the carbonated product to an elevated temperature sufficient to remove the alkanol; and (6) removing solids and solvent from the carbonated product.

Preparation of high base calcium sulfonates

A method of preparing a carbonate overbased alkali metal sulfonate, which method comprises: (1) forming a reaction mixture of an alkali metal compound, a lower molecular weight akanol having from 1 to 4 carbon atoms, a diluent, a solvent, and a sulfonate compound; (2) heating said reaction mixture to a temperature of a least 140.degree. C. (220.degree. F.) for a period of time that is sufficient to remove essentially all of said alakanol as overhead and to obtain a heated mixture and replacing the solvent that is removed along with said alkanol; (3) carbonating said heated mixture at a temperature of at least 140.degree. C. (220.degree. F.) to form a carbonated product comprising said overbased alkali metal sulfonate while removing water of reaction as overhead as it is formed; (4) after carbonation, heating said carbonated product to a temperature that is within the range of about 116.degree.0 C. (240.degree. F.) to about 117.degree. C. (350.degree. F.) to remove any residula water of reaction therefrom; and (5) subsequently treating said carbonated product to remove solids and residual solvent therefrom.

Overbased alkali metal sulfonates

A process for incorporating molybdenum into overbased alkaline earth metal and alkali metal sulfonates, phenates and salicylates. The incorporation is a post addition of molybdenum into a previously prepared overbased composition. The resulting composition containing molybdenum is gel-free, haze-free, precipitate-free, has a reproducible Total Base Number (TBN) and is commercially acceptable for use in lubricating oil compositions.

Process for the preparation of overbased molybdenum alkaline earth metal

A metal-containing lubricant composition containing an overbased copper metal-containing compound is disclosed which improves high speed, high temperature operation of gasoline and diesel engines. The overbased copper metal-containing compound acts as a dispersant/detergent and oxidation and corrosion inhibitor and avoids the acceleration of wear rates typical of many copper compounds.

Metal-containing lubricant compositions

A metal-containing lubricant composition containing a copper overbased metal-containing composition is disclosed which improves high speed, high temperature operation of gasoline and diesel engines. The copper overbased metal-containing composition acts as a dispersant/detergent and oxidation and corrosion inhibitor.

The process comprises in sequence the following steps: (a) introducing into a reaction zone a sulfonic acid comprising a neutral ammonium sulfonate; (b) adding to and mixing with said sulfonic acid a substantially inert diluent, an alkaline earth metal compound, water, and an alkanol to form a hydration mixture; (c) heating said hydration mixture at an elevated temperature to hydrate said alkaline earth metal compound; (d) adding a molybdenum-containing compound to said reaction zone at a time during the period beginning after the introduction of said sulfonic acid and extending through said refluxing of said hydration mixture; and (e) adding an acidic material to said reaction zone at a temperature within the range of about 26.7.degree. C. (80.degree. F.) to about 68.5.degree. C. (155.degree. F.) to form a molybdenum-alkaline earth metal sulfonate dispersion. In an embodiment of the process, the process is characterized further by stripping the alkanol from the reaction zone prior to adding the acidic material. A polybutene succinic anhydride can be added to the reaction zone during the process as a process aid. Preferably, it is added prior to the addition of the molybdenum-containing compound.

Process for the preparation of overbased, molybdenum-alkaline earth

Lubricating oil composition comprising the reaction product of (a) molybdenum sulfonate, which is the reaction product of a hydrocarbyl sulfonic acid compound and molybdenum halide, and (b) sulfur or a sulfur-yielding compound. Preferably, an alkyl sulfonic acid having from 8-200 carbon atoms in the alkyl group is reacted with molybdenum pentachloride, and the molybdenum sulfonate resulting therefrom is sulfurized to produce the reaction product of the invention.

Molybdenum sulfonates for friction reducing additives

Anti-friction additives for lubricating oil are prepared by reacting a sulfurized organic compound having an active hydrogen or potentially active hydrogen with a molybdenum halide. The resulting product has friction reducing properties at least as good as currently available phosphorus-containing additives.

Molybdenum-containing friction modifying additive for lubricating oils

Lubricating oil composition comprising the reaction product of a phenolic compound, a molybdenum, an amine and sulfur or a sulfur-yielding compound. Preferably, molybdenum oxide, an alkyl-substituted phenol having an alkyl side chain of at least 9 carbon atoms, an amine having at least one aliphatic hydrocarbon-based radical or aliphatic-substituted aromatic radical and elemental sulfur are reacted to produce the reaction product of the invention.

Overbased magnesium phenate compositions are prepared by reacting magnesium oxide in a diluent with: (1) a hydrocarbyl-substituted phenol and/or a sulfurized hydrocarbyl-substituted phenol, (2) an ammonium sulfonate, (3) a monohydric alcohol of from 1 to 4 carbon atoms and (4) water; removing the alcohol; and treating the resulting material with carbon dioxide.

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Naperville, IL, United States of America

Mack W Hunt