US 12,065,622 B2
Ammonium-based ionic liquid and its use as a lubricant additive
Modestino De Feo, Solaize (FR); Vanessa Pichon, Solaize (FR); Thomas Schubert, Bad Wimpfen (DE); and Boyan Iliev, Heilbronn (DE)
Assigned to TOTALENERGIES ONETECH, Courbevoie (FR)
Appl. No. 17/919,342
Filed by TOTALENERGIES ONETECH, Courbevoie (FR)
PCT Filed Apr. 7, 2021, PCT No. PCT/EP2021/059086
§ 371(c)(1), (2) Date Oct. 17, 2022,
PCT Pub. No. WO2021/209296, PCT Pub. Date Oct. 21, 2021.
Claims priority of application No. 20315181 (EP), filed on Apr. 16, 2020.
Prior Publication US 2023/0159846 A1, May 25, 2023
Int. Cl. C10M 133/06 (2006.01); C10M 169/04 (2006.01); C10N 20/00 (2006.01); C10N 30/00 (2006.01); C10N 30/02 (2006.01); C10N 30/04 (2006.01); C10N 30/12 (2006.01); C10N 40/25 (2006.01)
CPC C10M 133/06 (2013.01) [C10M 169/04 (2013.01); C10M 2207/262 (2013.01); C10M 2215/04 (2013.01); C10N 2020/077 (2020.05); C10N 2030/02 (2013.01); C10N 2030/04 (2013.01); C10N 2030/12 (2013.01); C10N 2030/52 (2020.05); C10N 2040/252 (2020.05)] 13 Claims
 
1. A method to reduce and/or limit and/or prevent and/or delay the formation of deposits or to reduce the deposits already present in the internal parts of a marine combustion engine, the method comprising at least a step of application to said engine of an ammonium-based ionic liquid compound of formula (I)
[CAT+][X−]  (I)
wherein
[CAT+] is tri-n-octylmethylammonium and
[X−] is selected from compounds of formula (IA):

OG Complex Work Unit Chemistry
wherein R is selected from linear or branched alkyl and alkenyl groups comprising from 2 to 7 atoms of carbon.