Westvaco Corporation

Ingevity South Carolina, LLC

Thomas J Cuff

Philip L Robinson

Eric J Olivier

Julian E Parker, Iii

James L Bowers

Kejian Yao

Disclosed herein are lubricating compositions and methods of use of the same, including for, e.g., use in metalworking operations.

Lubricating compositions and methods for the use thereof

Sterols from the solvent-extracted or distilled neutrals of saponified tall oil pitch are disclosed to be isolated and purified by a process of a liquid-liquid extraction where the hydrocarbon extraction stream is washed with an aqueous methanol solution to remove methanol-soluble impurities by adding the methanol and water, sequentially or as a blend. The resulting hydrocarbon/neutrals/methanol/water solution separates into an upper organic phase and a lower methanol/water phase, which lower phase is removed. The remaining organic phase is allowed to cool to from about 20-30.degree. C., with agitation, to facilitate crystallization of sterols, which crystals are recovered by filtering.

Isolation and purification of sterols from neutrals fraction of tall oil

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Charleston, SC, United States of America

Thomas J Cuff