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US 12,503,664 B2Granted
Ester based functional fluid
AssigneeOleon NV
InventorsMarion Kerbrat, Anne-Elise Lescoffit, Pieter Struelens
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Abstract
The present invention relates to the use of specific esters in a functional fluid for electric vehicles.
Claims9
A functional fluid suitable for use in an electric vehicle comprising an ester selected from the group consisting of:
- esters obtainable from esterification of a saturated branched monoalcohol comprising from 5 to 16 carbon atoms, with isostearic acid;
- esters obtainable from esterification of 2-hexyl-1-decanol with a saturated fatty acid comprising from 7 to 18 carbon atoms;
- and
- mixtures thereof,
- wherein, when an acrylonitrile-butadiene rubber with an acrylic nitrile content of 28% by weight based on total weight of the rubber (NBR 1) is immersed in the functional fluid, the NBR 1 has no more than a 15% change in volume, the change in volume being measured according to standard ISO 6072 after 168 hours at 100° C.
2 more elements
A method for lubricating and cooling one or more device(s) in an electric vehicle, comprising bringing into contact the device(s) with an ester selected from the group consisting of:
- esters obtainable from esterification of a saturated branched monoalcohol comprising from 5 to 16 carbon atoms, with isostearic acid;
- esters obtainable from esterification of 2-hexyl-1-decanol with a fatty acid comprising from 7 to 18 carbon atoms;
- and
- mixtures thereof.
1 more element
Dependencies are inferred from the claim text.