Electrical insulating oil composition and electrical appliances

Details Electrical insulating oil composition and electrical appliances Electrical insulating oil composition and electrical appliances

1988-05-06

1990-10-30

Pal, Asok

Chemistry of hydrocarbon compounds

Product blend, e.g., composition, etc., or blending process...

Fluent dielectric

174 17LF, 174 25R, 174 25C, 336 94, 361315, 361327, 585 24, 585 25, H01G 422, H01B 322

Patent

active

049670280

ABSTRACT:
The present invention relates to an improved electrical insulating oil composition which has excellent electrical characteristics and is suitable for use in impregnating electrical appliances in which plastic dielectric material is used, and further relates to electrical appliances impregnated with such a composition. The electrical insulating oil composition is produced by bringing a by-product oil fraction mainly containing components having boiling points in the range of 260.degree. to 330.degree. C. (atmospheric pressure basis) into liquid-liquid contact with an organic polar solvent; said by-product oil fraction being formed by alkylating benene or toluene with ethylene in the presence of an alkylation catalyst and then distilling the alkylation product; and said electrical insulating oil composition being characterized in that the ratio of the integrated intensity as chemical shift at 120 to 155 ppm of the spectrum measured by .sup.13 C NMR method to the total integrated intensity at 0 to 155 ppm of said spectrum is 70% or higher.

REFERENCES:
patent: 4108788 (1978-08-01), Schulz et al.
patent: 4111824 (1978-09-01), Schulz et al.
patent: 4111825 (1978-09-01), Schulz et al.
patent: 4568793 (1986-02-01), Sato et al.
patent: 4642730 (1987-02-01), Sato et al.

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