Infineum International Limited

Exxon Chemical Patents, Inc.

Gregory C Giffin

Ronald P Wangner

Joby V John

Robert D Lundberg

Antonio Gutierrez

Jacob I Emert

Frank J Chen

Joan M Evans

Grant O Hutchings

Gordon F Evans

John Spanton

John (deceased) Spanton

A process for making an additive comprising one or more oil-soluble or oil-dispersible molybdenum-sulfur compounds, said process comprising the steps of: The additive has improved color characteristics and a lubricating oil composition comprising said additive is more benign to corrosion of metals.

Molybdenum-sulfur additives

A process for preparation of an ammonium polythiomolybdate or a hydrate thereof of the formula (NH)MoS.n HO where n is 0, 1 or 2, in which aqueous ammonium monosulfide, elemental sulfur and molybdic oxide are reacted in a sealed reactor, with hydrogen sulfide gas being fed into the reactor until the hydrogen sulfide is no longer absorbed by the reaction mixture to form a reaction product and then heating the reaction product in a sealed reactor, the concentration of ammonium monosulfide in the reaction mixture being controlled throughout the reaction such that reactor pressure does not exceed 700 kPa (100 psig).

Process for producing ammonium polythiomolybdate

A process for producing an ammonium polythiomolybdate of the formula (NH)MoS.n HO where n is 0, 1 or 2 in which an aqueous ammoniacal molybdate solution is reacted with hydrogen sulfide gas in a closed system at superatmospheric pressure until the HS is no longer absorbed by the solution to form a slurry of solid ammonium tetrathiomolybdate containing a portion of the starting molybdenum in a mother liquor containing the balance of the molybdenum and thereafter heat soaking the reaction product in the presence of elemental sulfur to form the desired product.

Process for producing ammonium polythimolybdate

The present invention is directed to a low sediment method of producing oleaginous compositions containing copper salts of the product of a polyolefin having a numerical average molecular weight (M.sub.n) of at least 600 which has been substituted with an average of at least 0.5 dicarboxylic acid anhydride moiety per polyolefin molecule, wherein the polyolefin-substituted dicarboxylic acid anhydride is contacted with a water-soluble copper reactant in the presence of at least 1,000 wt. % above the amount theoretically required to hydrolyze the polyolefin-substituted dicarboxylic acid anhydride material charged) and in the presence of a solvent for the polyolefin-substituted dicarboxylic acid anhydride material charged. The resulting copper salt products, and amine derivatives thereof, are useful in lubricating oils as additives, e.g., as antioxidant lube oil additives.

Low sediment method for preparing copper salts of

There is provided a process for preparing polybutenes having enhanced reactivity using a BF.sub.3 catalyst and an immediate quench procedure and controlled polymerization times of 12 to 40 minutes in combination with isobutylene conversions of at least 70%.

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Martinsville, NJ, United States of America

Gregory C Giffin