Compositions – Electrolytes for electrical devices
Patent
1987-11-16
1989-09-12
Dixon, Jr., William R.
Compositions
Electrolytes for electrical devices
252 427, 252388, 252 482, C10M10500
Patent
active
048657549
ABSTRACT:
An improved overbased sulfurized alkaline earth metal phenate detergent lubricating oil additive and the process for its preparation are disclosed. The overbased sulfurized alkaline earth metal phenate detergent lubricating oil additive comprises the reaction product of an alkaline earth metal compound, sulfur, and an alkylphenol in the presence of a polyhydroxy compound and, an alkaline earth metal alkylbenzene sulfonate wherein the reaction mixture is carbonated with carbon dioxide. A lubricating oil composition comprising a major amount of a lubricating oil as base oil and a minor amount of said overbased sulfurized alkaline earth metal phenate detergent lubricating oil additive demonstrates improved storage at elevated temperatures, improved water tolerance and improved compatibility of the phenate-sulfonate mixture, particularly if water is present.
REFERENCES:
patent: 3036971 (1962-05-01), Otto
patent: 3923670 (1975-12-01), Crawford
patent: 4221673 (1980-09-01), Robson
patent: 4255589 (1981-03-01), Wisotsky
patent: 4282106 (1981-08-01), Schaap
patent: 4328111 (1982-05-01), Watson
patent: 4710308 (1987-12-01), Stauffer
Amoco Corporation
Dixon Jr. William R.
Hooper Matthew R.
Hunter, Jr. James M.
Magidson William H.
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