Compositions – Electrolytes for electrical devices
Patent
1990-06-21
1993-01-12
McAvoy, Ellen
Compositions
Electrolytes for electrical devices
252 25, 252 427, 568 18, C10M12510, C10M12500
Patent
active
051787814
ABSTRACT:
A process for producing an over-based sulfurized alkaline earth metal phenate type detergent, which comprises reacting a phenol and a dihydric alcohol with an alkaline earth metal reagent to carry out a metal addition reaction, and reacting sulfur therewith to carry out a sulfurization reaction, and then reacting carbon dioxide therewith to carry out a carbon dioxide treatment, characterized in that the metal addition reaction and the sulfurization reaction are carried out under pressure and closed conditions. The sulfurization reaction may be carried out simultaneously with the metal addition reaction, or, alternatively, with the carbon dioxide treatment after the metal addition reaction. Furthermore, the sulfurization reaction may be carried out between the metal addition reaction and the carbon dioxide treatment.
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Goto Masato
Hori Takashi
Kojima Yoshihiro
Kumagai Hitoshi
Ueda Sanae
Cosmo Oil Co. Ltd.
Cosmo Research Institute
McAvoy Ellen
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