Dielectric or heat-transfer fluid compositions and uses of same
US10153068B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 2014 |
| Grant date | Dec 11, 2018 |
| Priority date | — |
| Expiry date | Jul 18, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K5/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A composition including: (a) from 30 to 70% by weight of a mixture of benzyltoluene and dibenzyltoluene, and (b) from 70 to 30% by weight of at least one compound chosen from the C4-C8 aromatic compounds enclosing two benzene rings condensed or bonded to each other by a bond or by a spacer group other than —CH2-, the oligomers of same and the mixtures of same, excluding phenylxylylethane. Also, the use of this composition, with or without phenylxylylethane, depending on the case, as a dielectric and/or heat-transfer fluid, in particular in use conditions at very low temperatures, such as temperatures lower than −40° C., or indeed lower than −60° C. Also, mixtures of these compositions with mineral oils and/or natural or synthetic esters. Finally, devices, in particular electrical devices, incorporating this composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.