US 11,591,538 B2 · Cooling and flame-retardant lubricating composition for a propulsion system of an electric or hybrid vehicle

Abstract

The present invention relates to a composition for lubricating a propulsion system of an electric or hybrid vehicle, comprising at least one base oil and at least one fire retardant corresponding to formula (I) RF-L-RH (I) in which RF is a perfluorinated or partially fluorinated group, RH is a hydrocarbon-based group, and L is a linker. The invention also relates to the use of at least one fire retardant of formula (I), in a composition for lubricating a propulsion system of an electric or hybrid vehicle, including at least one battery, to give it ignition-resistance properties. Finally, the invention relates to a process for cooling and fire-protecting a battery of a propulsion system of an electric or hybrid vehicle, comprising at least one step of placing at least one battery, in particular a lithium-ion or nickel-cadmium battery, in contact with a composition according to the invention.

Claims19

Dependent claims

A composition for lubricating a propulsion system of an electric or hybrid vehicle, comprising:

at least one base oil;
and
at least one fire retardant represented by formula (I):
RF-L-RH (I),
in which,
RF is a perfluorinated or partially fluorinated group,
RH is a hydrocarbon-based group, and
L is a linker chosen from the following:
—CH2—, —CH═CH—, —O—, —S—, or —PO4—,
wherein the composition has a kinematic viscosity of between 2 and 8 mm2/s, measured at 100° C. according to the standard ASTM D445.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/259,285Filed 10 Jul 2019

Priority

FR 185647013 Jul 2018

Published

US 2021/0277322 A19 Sep 2021

Granted

28 Feb 2023

Term ends

Not estimatedThe source records don’t support an estimate.

Classification38 codes

C10M 105/52
Containing halogen: containing carbon, hydrogen and halogen only
C10M 131/04
Containing carbon, hydrogen and halogen only: aliphatic
C09K 5/10
Materials not undergoing a change of physical state when used: liquid materials
C10M 105/54
Containing halogen: containing carbon, hydrogen, halogen and oxygen

Cooling and flame-retardant lubricating composition for a propulsion system of an electric or hybrid vehicle

Life of this patent

Cooling and flame-retardant lubricating composition for a propulsion system of an electric or hybrid vehicle

Life of this patent

Abstract

Claims19