Lubricant base oil processing

Mineral oils: processes and products – Colorng treatments

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Details

208144, 208145, 208143, C10G 1100, C10G 4500

Patent

active

052757188

ABSTRACT:
A hydrofinishing process for improving the color, thermal and oxidative stability of a base stock for lubricating oil wherein the lubricating oil stock is contacted with hydrogen in the presence of a nickel-molybdenum catalyst, at a pressure in the range of 400 psi to 3000 psi, at a weight hourly space velocity in the range of 0.25-4.5 and at a temperature in the range of 550.degree. F. to 750.degree. F.

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"Lubricant Base Oil Processing", Avilino Sequeira, Lubrication, vol. 75, No. 1 (1989).

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