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US 2015/0083979 A1Published application
Fluorinated Nitriles as Dielectric Gases
Assignee3M Innovative Properties Company
InventorsMichael G. Costello, Richard M. Flynn, Michael J. Bulinski
Life of this patent
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Abstract
An electrical device containing a dielectric fluid, the dielectric fluid comprising heptafluoroisobutyronitrile or 2,3,3,3-tetrafluoro-2-(trifluoromethoxy) propanenitrile.
Claims11
An electrical device comprising a dielectric fluid according to the formula:
- (i) (CF3)2CFCN;
- or (ii) CF3CF(OCF3)CN.
A dielectric composition comprising:
- a fluid according to the formula:
- (i) (CF3)2CFCN,or (ii) CF3CF(OCF3)CN;
- and
- a gaseous dielectric comprising an inert gas having a vapor pressure of at least about 70 kPa at 0° C.
1 more element
A dielectric composition for use in an electrical device as an insulator, comprising:
- a fluid according to the formula:
- (i) (CF3)2CFCN, or (ii) CF3CF(OCF3)CN.
Dependencies are inferred from the claim text.