Cerium-containing lubricating compositions

Details Cerium-containing lubricating compositions Cerium-containing lubricating compositions

1988-10-12

1993-04-06

Medley, Margaret

Compositions

Electrolytes for electrical devices

252 25, 252 58, C10M12518

Patent

active

052000982

ABSTRACT:
A process for upgrading technical low grade cerium/fluorine-containing residues having concentrations of silicon and iron above about 1.0 weight percent produces compositions wherein the combined silicon and iron content is less than about 1.0 weight percent. Typically, the cerium content is raised to above about 50 weight percent and sufficient fluorine is present for the fluorine-to-cerium molar ratio to be 3.0 or above. Lubricating compositions comprising a major part of a lubricant and a minor amount of said upgraded cerium/fluorine-containing residue are useful as anti-wear lubricants.

REFERENCES:
patent: 2523892 (1950-09-01), Warf
patent: 2564241 (1951-08-01), Warf
patent: 3830280 (1974-08-01), Larsen
patent: 3853979 (1974-12-01), McNeese et al.
patent: 4507214 (1985-03-01), Aldorf
patent: 4715972 (1987-12-01), Pacholke
patent: 4741893 (1988-05-01), Watanabe et al.
patent: 4752454 (1988-06-01), Pastor et al.

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