Electrical insulating oil and oil-filled electrical appliances
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United States of America Patent
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Feb 10, 1987
Grant Date -
N/A
app pub date -
Jul 30, 1985
filing date -
Aug 3, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved electrical insulating oil and oil-filled electrical appliances impregnated therewith. The electrical insulating oil can be produced inexpensively but has excellent electrical characteristics and it comprises a fraction having boiling points in the range of 350.degree. to 450.degree. C. that is prepared by disproportionating diarylalkane or a hydrocarbon mixture mainly containing the same at temperatures in the range of 20.degree. to 500.degree. C. in the presence of a disproportionation catalyst, said diarylalkane having boiling points in the range of 260.degree. to 320.degree. C.
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