Electrical insulating oils

Details Electrical insulating oils Electrical insulating oils

1975-12-01

1977-07-05

Levine, Herbert

Mineral oils: processes and products

Products and compositions

208 97, 252 63, C10G 3900, H01B 322

Patent

active

040338541

ABSTRACT:
An electrical insulating oil having excellent oxidation stability, thermal stability and/or hydrogen absorbability consisting essentially of (A) a base hydrocarbon oil obtained by hydrofining and then dewaxing a fraction boiling at 280.degree.-400.degree. derived from a paraffin or mixed base crude oil, (B) a highly aromatic hydrocarbon oil obtained by hydrofining and/or distilling a heavy hydrocarbon fraction boiling at 250.degree.-400.degree. C produced as a by-product at the time of catalytically reforming naphtha or the like and, if desired, (C) an oil obtained by treating a lubricating oil fraction boiling at 230.degree.-500.degree. C derived from a crude petroleum oil.

REFERENCES:
patent: 2846372 (1958-08-01), Schneider et al.
patent: 2921011 (1960-01-01), Ordelt et al.
patent: 3617473 (1970-02-01), Lipscomb

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