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US 4,358,387 AGranted
Cylinder lubricating oil composition
AssigneeTexaco Inc.
InventorsBenjamin H. Zoleski, Rodney L. Sung, Stephen A. Levine, William P. Cullen
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AssigneeTexaco Inc.
InventorsBenjamin H. Zoleski, Rodney L. Sung, Stephen A. Levine, William P. Cullen
Estimating the term…
A cylinder lubricating oil composition characterized by having a Total Base Number from about 50 to 100 comprising a mineral lubricating oil, from 10 to 20 percent of an overbased calcium sulfonate and an N-alkylglycine derivative having the formula: ##STR1## in which R is a hydrocarbyl radical having from about 10 to 25 carbon atoms, R' represents hydrogen or an alkyl, hydroxyalkyl or an aminoalkyl radical having from 1 to 5 carbon atoms and R" represents an alkyl or hydroxyalkyl radical having from 1 to 5 carbon atoms or a --CH.sub.2 --CH.sub.2 --NH).sub.x H radical in which x has a value from 1 to 3, or ##STR2## in which X represents an oxygen atom or a divalent N--R' radical and R and R' have the values noted above.
A cylinder lubricating oil composition having a Total Base Number in the range from about 50 to 100 comprising a major proportion of a mineral lubricating oil, from about 10 to 20 weight percent of an overbased calcium sulfonate having a Total Base Number from about 300 to 450, and a friction modifying amount of an N-alkylglycine derivative selected from the group consisting of
A cylinder lubricating oil composition having a Total Base Number in the range from about 60 to 80 comprising a major proportion of a mineral lubricating oil, from about 12 to 18 weight percent of an overbased calcium sulfonate derived from petroleum sulfonic acids having from about 12 to 200 carbon atoms and having a Total Base Number from about 350 to 425, and a friction modifying amount of an N-alkylglycine derivative having the formula:
Dependencies are inferred from the claim text.