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US 2018/0322981 A1Published application
Methods for dielectrically insulating electrical active parts
AssigneeSolvay SA
InventorsJean FABRE, Ferdinand HARDINGHAUS, Holger PERNICE
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Abstract
Methods for dielectrically insulating electrical active parts The invention concerns methods for dielectrically insulating electrical active parts using certain fluorinated cyano-substituted ethers as well as compositions and apparatus comprising such compounds.
Claims13
A method for dielectrically insulating an electrical active part wherein the electrical active part is arranged in a gas-tight housing comprising an insulating medium comprising a compound of general formula (I):
- NC—CnHmF(2n)—m—O—Cn′Hm′F(2n′−1)—m′ (I)
- wherein n is 1, 2, 3, 4, or 5 and m is integer between 0 and 2n and wherein n′ is 1, 2, 3, 4, or 5 and m′ is integer between 0 and 2n′.
A composition comprising at least one compound of general formula (I)
- NC—CnHmF(2n)—m—O—Cn′Hm′F(2n′+1)—m′ (I)
- wherein n is 1, 2, 3, 4, or 5 and m is integer between 0 and 2n and wherein n′ is 1, 2, 3, 4, or 5 and m′ is integer between 0 and 2n′ and at least one further compound selected from the group consisting of an inert gas, a perfluorinated or partially fluorinated ketone, a perfluorinated or partially fluorinated ether, a perfluorinated or partially fluorinated ester, a perfluorinated or partially fluorinated cyano compound and a hydrocarbon compound.
Dependencies are inferred from the claim text.