Molybdenum-sulfur additives

Details Molybdenum-sulfur additives Molybdenum-sulfur additives

C - Chemistry, Metallurgy

07

F

C07F 11/00 (2006.01) C01G 39/06 (2006.01) C07C 333/20 (2006.01) C10M 125/04 (2006.01) C10M 125/22 (2006.01) C10M 159/18 (2006.01) C10M 163/00 (2006.01) C10M 169/04 (2006.01)

Patent

CA 2432993

A process for making ana additive comprising one or more oil-soluble or oil- dispersible molybdenum-sulfur compounds, said process comprising the steps of: (I) reacting in a polar medium a reactant molybdenum compound (A) and a source of a ligand (B), which ligand (B) is capable of rendering the or each molybdenum- sulfur compound oil-soluble or oil-dispersible; and (II) reacting a compound (C), which is capable of reacting with labile sulfur, either with (a) the reaction mixture of step (I) after the reaction of (A) and (B) had begun or (b) the product of step (I). The additive has improved colour characteristics and a lubricating oil composition comprising said additive is more benign to corrosion of metals.

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