Westvaco Corporation

Philip L Robinson

J George Hayden

John P Cosgrove

Thomas J Cuff

Julian E Parker, Iii

Ramazan Benrashid

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

The invention relates to an improvement in the art of making saturating kraft paper. In particular, the invention relates to a method for enhancing the fire-retardancy of saturating kraft paper containing alumina trihydrate and phenolic resin by including sodium borate into the paper. The improved saturating kraft is particularly useful in the production of fire-retardant high-pressure laminated materials.

Fire-retardant saturating kraft paper

An oleic acid containing adduct is produced by reacting tall oil fatty acid (which contains pre-conjugated linoleic acid) with a dienophile at a temperature between 180.degree. C. and 300.degree. C. No catalyst or solvent is necessary for the reaction to occur. The adduct is subsequently distilled to yield a high-purity, light color oleic acid.

Process for making high-purity oleic acid

Disclosed are pesticide formulations containing oil-free chemical compositions as wetting agents and the oil-free wetting agents produced by reacting a tall oil fatty acid or ester with an anhydride compound and an amino sulfonic acid compound in water alone to produce an acid amide salt, an imide salt, or the adduct thereof.

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Isle of Palms, SC, United States of America

Philip L Robinson