Oil compositions

Details Oil compositions Oil compositions

C - Chemistry, Metallurgy

10

M

C10M 159/04 (2006.01) B23H 1/08 (2006.01) C09K 5/00 (2006.01)

Patent

CA 2042604

ABSTRACT Oil compositions are disclosed which are substantially undeteriorative even in an oxidizing atmosphere and suitably applicable as lubricating oils, heat transfer oils, heat treating oils and electrical discharge machining oils. The composition is essentially comprised of 100 weight parts of a selected base oil of a mineral or synthetic class and 0.1 to 20 weight parts of a specified oil fraction. The oil fraction is an oil generated from a hydrogenated pitch and distilled to boil at from 160 to 550°C, the pitch being derived by primarily heat-treating and hydrogenating a heavy oil of a petroleum or coal origin, or an oil resulting from secondarily heat-treating the pitch and boiling at from 160 to 550°C.

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