Antonelli, Terry, Stout & Kraus
Overbased sulfurized alkaline earth metal phenates and process for preparing same
 Overbased sulfurized alkaline earth metal phenates which are oil soluble, excellent in detergency dispersancy and have high base value, and an effective process for production of said overbased sulfurized alkaline earth metal phenates under conditions providing less sludge and less raw material recovery, and further a lubricating oil additives containing said overbased sulfurized alkaline earth metal phenates as a main ingredient and a lubricating oil composition which comprises said lubricating oil additive compounded in a lubricating oil are disclosed. Since the resulting overbased sulfurized alkaline earth metal phenates have high base value and excellent oil-solubility, they can be effectively utilized as lubricating oil additives. 
Idemistu Kosan Co., Ltd.
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Hiroaki Tomiyasu Takeshige
Koshima Minokami Nakano