US 11,739,280 B2
Lubricant additive, lubricant additive composition, and lubricating oil composition containing the same
Kazuhiro Oda, Amagasaki (JP); Yutaro Shimizu, Amagasaki (JP); and Hideki Kawamoto, Amagasaki (JP)
Assigned to NOF CORPORATION, Tokyo (JP)
Appl. No. 17/439,087
Filed by NOF CORPORATION, Tokyo (JP)
PCT Filed Mar. 10, 2020, PCT No. PCT/JP2020/010345
§ 371(c)(1), (2) Date Sep. 14, 2021,
PCT Pub. No. WO2020/184570, PCT Pub. Date Sep. 17, 2020.
Claims priority of application No. 2019-047823 (JP), filed on Mar. 14, 2019; and application No. 2020-027132 (JP), filed on Feb. 20, 2020.
Prior Publication US 2022/0154094 A1, May 19, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C10M 129/68 (2006.01); C10M 133/06 (2006.01); C10M 137/10 (2006.01); C10M 169/04 (2006.01); C10N 30/00 (2006.01); C10N 10/04 (2006.01); C10N 30/06 (2006.01); C10N 30/12 (2006.01); C10N 40/08 (2006.01); C10N 40/20 (2006.01); C10N 40/25 (2006.01)
CPC C10M 129/68 (2013.01) [C10M 133/06 (2013.01); C10M 137/10 (2013.01); C10M 169/04 (2013.01); C10M 2207/28 (2013.01); C10M 2215/04 (2013.01); C10M 2223/045 (2013.01); C10N 2010/04 (2013.01); C10N 2030/06 (2013.01); C10N 2030/12 (2013.01); C10N 2030/45 (2020.05); C10N 2040/08 (2013.01); C10N 2040/20 (2013.01); C10N 2040/25 (2013.01)] 4 Claims
 
1. A lubricant additive, comprising:
a monoester carboxylic acid salt (A) represented by formula (1),

OG Complex Work Unit Chemistry
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.