Compositions – Electrolytes for electrical devices
Patent
1988-12-27
1990-09-18
Howard, Jacqueline V.
Compositions
Electrolytes for electrical devices
C10M12910
Patent
active
049576429
ABSTRACT:
A magnesium phenate is prepared by a process which comprises reacting (1) magnesium oxide, magnesium hydroxide, magnesium carbonate, magnesium bicarbonate or a magnesium carboxylate with (2) a phenol, a methylene bis-phenol or a sulphurised phenol in the presence of (3) a solvent comprising an organic compound containing one or more alcoholic hydroxyl groups e.g. an alkoxy alcohol and (4) a promoter selected from a ketone, diketone such as .alpha. or .beta. diketone, aldehyde or carboxylic acid and (5) optionally a diluent oil. This magnesium phenate may be used as a detergent for a lubricating oil.
REFERENCES:
patent: Re32235 (1986-08-01), Forsberg
patent: 3410798 (1968-11-01), Cohen
patent: 3544463 (1970-12-01), Koft, Jr.
patent: 4049560 (1977-09-01), Dominey
Cleverley John A.
Marsh John F.
Miasik Gaynor M.
Skinner Philip
Exxon Chemical Patents Inc.
Howard Jacqueline V.
McAvoy Ellen M.
Murray, Jr. J. B.
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