Electrical insulating oil and oil-filled electrical appliances

Details Electrical insulating oil and oil-filled electrical appliances Electrical insulating oil and oil-filled electrical appliances

1985-06-21

1986-02-04

Doll, John

Electricity: conductors and insulators

With fluids or vacuum

Conduits, cables and conductors

361327, 585 24, 585 25, 585467, H01B 324

Patent

active

045687935

ABSTRACT:
An electrical insulating oil which can be produced easily at low cost, scarcely contains undesirable components of tarry substance, unsaturated compounds and carbonyl compounds, does neither swell nor dissolve plastic materials, and has excellent electrical properties. The electrical insulating oil is characterized in that it comprises a fraction having boiling points in the range of 270.degree. to 350.degree. C. which is prepared by distilling the heavier products obtained from the process for producing ethyltoluene by alkylating toluene with ethylene in the presence of synthetic zeolite catalyst. Included also in the present invention are oil-filled electrical appliances that are produced by impregnating them with the above insulating oil.

REFERENCES:
patent: 2933450 (1960-04-01), Lyding
patent: 4111824 (1978-09-01), Schulz et al.
patent: 4111825 (1978-09-01), Schulz et al.
patent: 4238343 (1980-12-01), Pellegrini et al.
patent: 4493943 (1985-01-01), Sato et al.

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