C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
253/94
C10M 159/22 (2006.01) C10M 159/24 (2006.01)
Patent
CA 1332602
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 lubri- cating 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 alka- line earth metal alkylbenzene sulfonate wherein the reac- tion mixture is carbonated with carbon dioxide. A lubri- cating 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 deter- gent lubricating oil additive demonstrates improved sto- rage at elevated temperatures, improved water tolerance and improved compatibility of the phenate-sulfonate mix- ture, particularly if water is present.
599653
Corporation Ethyl
Gowling Lafleur Henderson Llp
LandOfFree
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