Compositions – Electrolytes for electrical devices
Patent
1992-10-13
1994-06-07
Pal, Asok
Compositions
Electrolytes for electrical devices
252 47, 252 37, 252 38, 252 39, C10M13300, C10M13500
Patent
active
053187121
ABSTRACT:
This invention relates to a composition comprising (A) a major amount of an oil of lubricating viscosity and (B) a minor amount of (i) a reaction product of (a) at least one dimercaptothiadiazole, and (b) at least one alpha, beta-unsaturated ester prepared by reacting an alpha, beta-unsaturated carboxylic acylating agent with a hydroxy compound, or (ii) a salt of the reaction product, provided that when the acylating agent is a monocarboxylic acylating agent then the hydroxy compound is a monohydroxy compound, and provided that when the ester is formed from a maleic acylating agent, then the ester is formed from a sulfur-containing hydroxy compound or a combination of a polyhydroxy compound and a monohydroxy. The invention also relates to aqueous fluids, greases, and concentrate compositions containing the reaction products and its salts. These additives generally show an ability to improve antiwear (including extreme pressure) and antioxidation properties of lubricants, aqueous fluids, and greases.
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J. Org. Chem 21, 497 (1956) Ellis K. Fields Addition of 1,3,4-Thiadiazole-2,5-dithiol to Olefinic Compounds.
Gapinski Richard E.
Lange Richard M.
Rizvi Syed Q. A.
Achutamurthy P.
Pal Asok
The Lubrizol Corporation
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