Lubricant additive, lubricant additive composition, and lubricating oil composition containing the same
AssigneeNof Corporation
InventorsKazuhiro Oda, Yutaro Shimizu, Hideki Kawamoto
Life of this patent
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Abstract
A lubricant additive includes a monoester carboxylic acid salt (A) represented by formula (1). In formula (1), R1 represents a single bond between carbon atoms of carbonyl groups, or a divalent hydrocarbon group having 1 to 4 carbon atoms, and R2 represents a hydrocarbon group having 1 to 22 carbon atoms. AO represents an oxyalkylene group of one type selected from oxyalkylene groups having 2 to 4 carbon atoms, or a mixed oxyalkylene group of two or more types selected from oxyalkylene groups having 2 to 4 carbon atoms, and n is an average number of added moles of the oxyalkylene group represented by AO and is 0 to 5. M represents organic ammonium.
Claims4
A lubricant additive, comprising:
- a monoester carboxylic acid salt (A) represented by formula (1),
- wherein R1 represents a divalent hydrocarbon group having 2 carbon atoms, R2 represents a linear or branched saturated hydrocarbon group or a linear or branched unsaturated hydrocarbon group having 4 to 18 carbon atoms, AO represents an oxyalkylene group of one type selected from oxyalkylene groups having 2 to 3 carbon atoms, or a mixed oxyalkylene group of two or more types selected from oxyalkylene groups having 2 to 3 carbon atoms, n is an average number of added moles of the oxyalkylene group represented by AO and is 1 to 3, and M represents organic ammonium selected from the group of secondary and tertiary ammonium cations in which a saturated or unsaturated hydrocarbon group having 1 to 24 carbon atoms is bonded to a nitrogen atom.
Dependencies are inferred from the claim text.