	US 12,247,176 B2
	Use of hydrogenated diene styrene polymer to reduce particulate emissions
Gautier Burette, Solaize (FR); and François Paoloni, Solaize (FR)
Assigned to TotalEnergies OneTech, Courbevoie (FR)
Appl. No. 17/913,607
Filed by TotalEnergies OneTech, Courbevoie (FR)
PCT Filed Mar. 23, 2021, PCT No. PCT/EP2021/057439 § 371(c)(1), (2) Date Sep. 22, 2022, PCT Pub. No. WO2021/191210, PCT Pub. Date Sep. 30, 2021.
Claims priority of application No. 2002902 (FR), filed on Mar. 25, 2020.
Prior Publication US 2023/0141132 A1, May 11, 2023
Int. Cl. C10M 143/12 (2006.01); C10M 143/10 (2006.01); C10M 169/04 (2006.01); C10N 20/00 (2006.01); C10N 20/06 (2006.01); C10N 30/00 (2006.01); C10N 40/25 (2006.01); C10N 60/02 (2006.01)

CPC C10M 143/12 (2013.01) [C10M 143/10 (2013.01); C10M 169/041 (2013.01); C10M 2205/04 (2013.01); C10M 2205/06 (2013.01); C10N 2020/06 (2013.01); C10N 2020/073 (2020.05); C10N 2030/50 (2020.05); C10N 2030/54 (2020.05); C10N 2040/25 (2013.01); C10N 2060/02 (2013.01)]

9 Claims

1. A method of reducing particle emissions in a motor vehicle engine comprising at least one step of bringing into contact the engine with a lubricating composition, the lubricating composition comprising a base oil and a star-shaped hydrogenated styrene diene polymer, wherein the diene polymer is a hydrogenated isoprene unit.