Treatment of lube stock for improvement of oxidative stability

Details Treatment of lube stock for improvement of oxidative stability Treatment of lube stock for improvement of oxidative stability

1974-06-17

1976-09-07

Levine, Herbert

Mineral oils: processes and products

Refining

With hydrogen

208 18, C10G 2304

Patent

active

039792790

ABSTRACT:
A stabilized lubricating oil stock resistant to oxidation and sludge formation upon exposure to a highly oxidative environment is formed by contacting the lubricating oil stock with hydrogen in the presence of a catalyst of low acidity comprised of a platinum-group metal on a solid refractory inorganic oxide support.
A benefit of the present treatment process is that a high sulfur lubricating oil stock can be converted hereby into a stock which can be formulated using an additive package not containing a zinc-based component.

REFERENCES:
patent: 2756183 (1956-07-01), Knox
patent: 2885352 (1959-05-01), Ciapetta et al.
patent: 2915452 (1959-12-01), Fear
patent: 2917448 (1959-12-01), Beuther et al.
patent: 3172839 (1965-03-01), Kozlowski
patent: 3431198 (1969-03-01), Rausch

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