Meta isopropyl biphenyl insulated electrical apparatus
US4266264A · kind A · utility
15Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1977 |
| Grant date | May 5, 1981 |
| Priority date | — |
| Expiry date | Jun 24, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/17
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A capacitor is disclosed of layers of metal foil alternating with insulating sheets impregnated with a dielectric fluid. The dielectric fluid comprises isopropyl biphenyl of which at least about 55% by weight is the meta isomer. The dielectric fluid forms a glassy, amorphous phase at low temperatures rather than a crystalline solid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.