Exxon Research and Engineering Company

Jacob J Habeeb

Keith Coupland

William H Stover

A lube oil composition having improved antiwear and friction reducing properties, together with a method for manufacturing same, are described. The lube oil comprises:

Lubricating oil (PNE-500)

This invention involves a method for preparing magnesium and calcium dihydrocarbyldithiophosphates comprising reacting magnesium or calcium in elemental metal form with a dihydrocarbyldithiophoric acid in the presence of an effective amount of a selected lower alkyl alcohol, particularly methanol, as a reaction promoter.

Method of preparing magnesium and calcium dihydrocarbyldithiophosphate

A method for electrochemically removing halogen from a halogenated compound utilizing an electrically conducting liquid medium in an electrolytic cell is disclosed. Halogen is extracted and reacted with a metal present in the sacrificial anode to form a relatively insoluble metal halide salt. The invention is of particular utility in removing halogen from aromatic and aliphatic compounds.

Removal of halogen from polyhalogenated compounds by electrolysis

This invention involves the preparation of selected metal dithiobenzoates by electrolysis of a substituted dithiobenzoic acid with a metal. It further involves the use of such metal dithiobenzoates as additives in lubricating hydrocarbon compositions.

Metal dithiobenzoates as lubricant additives

A lubricating oil composition with improved corrosion inhibiting properties comprising a major amount of a lubricating oil basestock and an effective amount of a complex of a selected heterocyclic nitrogen compound and an organometallic salt of a C.sub.4 to C.sub.22 fatty acid.

Heterocyclic nitrogen compounds--organometallic salt complexes as

Method of preparing metal dithiobenzoates (PNE-361)

A method is disclosed for the selective removal of basic nitrogen compounds (BNC) from natural and synthetic hydrocarbon feedstocks, preferably petroleum feedstocks, most preferably lube and transformer oils, which method comprises mixing the feedstock oil with a nonaqueous solution of anhydrous nonpolymeric Group IVb, Group Vb, Group VIb, Group VIIb, the non-noble (iron group) metals of Group VIII, copper, zinc, cadmium, and mercury halides (except TiCl.sub.4 or FeCl.sub.3) or tetrafluoroborates, complexed with non-aqueous polar solvents under conditions of agitation and mild heating whereby the basic nitrogen compounds exchange with the polar solvent to complex with the above-recited metal halides and metal tetrafluoroborates. The preferred halide is bromide, and the preferred polar solvent is methanol. The oil is then decanted to separate it from the metal halides: BNC complexes and the decantate washed with a polar solvent, which preferably includes water, and dried. The basic nitrogen compound-metal halide or metal tetrafluoroborate complex dissolves in the polar solvent, and that which is in the oil is removed by the polar solvent wash. The preferred polar solvent for the wash step is water. By the practice of this method, the basic nitrogen compound content of the oil is reduced by at least 90%. The anhydrous nonpolymeric metal halide or metal tetrafluoroborate-nonaqueous polar solvent complex can be used as such, or they can be impregnated onto a support material.

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Sarnia, Canada

Jacob J Habeeb