Granted Patent B2

US 12,735,616 · App. 18/728,785 · Granted Sep 15, 2026

Inventors: Anne-Elise Lescoffit (Margny-les-Compiegne, FR); Marion Kerbrat (Margny-les-Compiegne, FR)

Assignee: Oleon NV

C09K5/10H05K7/20236

Abstract

Claims (18)

1 . A liquid dielectric coolant comprising a combination consisting essentially of a monoalcohol fatty acid ester and a diester, wherein the weight ratio of monoalcohol fatty acid ester/diester is comprised between 15/85 and 55/45, and wherein the combination of monoalcohol fatty acid ester and diester is:

isoamyl isostearate and propylene glycol di-caprate/di-caprylate,

isoamyl laurate and propylene glycol di-caprate/di-caprylate, or 2-ethylhexyl laurate and di-2-ethylhexyl sebacate.

2 . The liquid dielectric coolant of claim 1 , wherein the weight ratio of monoalcohol fatty acid ester/diester is between 20/80 and 50/50.

3 . A combination consisting essentially of a monoalcohol fatty acid ester and a diester, wherein the weight ratio of monoalcohol fatty acid ester/diester is between 15/85 and 55/45; and wherein the combination of monoalcohol fatty acid ester and diester is:

isoamyl isostearate and propylene glycol di-caprate/di-caprylate,

isoamyl laurate and propylene glycol di-caprate/di-caprylate, or

2-ethylhexyl laurate and di-2-ethylhexyl sebacate.

4 . The combination of claim 3 , wherein the weight ratio of monoalcohol fatty acid ester/diester is between 20/80 and 50/50.

5 . A method for cooling an electrical device comprising bringing into contact the electrical device with the combination according to claim 3 .

6 . The method of claim 5 , wherein the contact between the electrical device and the combination is by immersion or by spraying.

7 . The method of claim 5 , wherein the electrical device is a server, a battery, or a drive system of an electric or hybrid vehicle.

8 . The method of claim 7 , wherein the drive system comprises power electronics, an electric motor, a transmission, and/or a battery.

9 . A composition comprising the combination of claim 3 , and an antioxidant and/or a metal deactivator.

10 . The composition of claim 9 , wherein the composition is a liquid dielectric coolant.

11 . The composition of claim 9 , further comprising a friction reducer, anti-wear, or thickening agent.

12 . The composition of claim 9 , wherein the weight ratio of monoalcohol fatty acid ester/diester is between 20/80 and 50/50.

13 . A method for cooling an electrical device, comprising bringing into contact the electrical device with a composition according to claim 9 .

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (20)