Electrical insulating oil compositions

Details Electrical insulating oil compositions Electrical insulating oil compositions

1977-01-28

1978-01-24

Levine, Herbert

Compositions

Electrolytes for electrical devices

208 14, H01B 322

Patent

active

040702979

ABSTRACT:
An electrical insulating oil composition having satisfactory oxidation stability, electrical properties and low-temperature performances, consisting essentially of (I) an electrical insulating oil having a sulphur content of 0.1-0.35 wt.% prepared from a paraffin or mixed base crude oil and (II) 0.001-1.0% by weight, based on said insulating oil, of an essentially amorphous ethylene-propylene copolymer having an average molecular weight of 10,000-200,000 and a propylene content of 10-70 mol%.

REFERENCES:
patent: 3617473 (1971-11-01), Lipscomb
patent: 3627673 (1971-12-01), Sproule et al.
patent: 3657132 (1972-04-01), Gourlaouen et al.
patent: 3668128 (1972-06-01), Anderson
patent: 3932267 (1976-01-01), Lewis et al.
patent: 4008148 (1977-02-01), Masunaga et al.
patent: 4033854 (1977-07-01), Ohmori et al.

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