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Literature Abstracts

 1954.    KÖLBEL, H., AND ULLMANN, D.  [Greases From the Initial and Final Fatty Acid Fractions of Paraffin Oxidation.]  Erdöl u. Kohle, vol. 3, 1950, p. 16-21; Chem. Abs., vol. 44, 1950, p. 4234.

        Initial (4-9 C atoms, equivalent weight 110-130) and final (more than 20 C atoms, equivalent weight 310-360) fatty acid fractions from the paraffin oxidation of the Fischer-Tropsch fraction of 320°-450°, ordinarily waste products, formed superior Ca and Na greases when mixed in a 40:60 ratio.  The low-molecular fraction contributed greatly to better storage stability (no change after 8-10 years) and in combination with Na was responsible for increase in drip point of the mixture.  Substitution of Na acetate and Na formate for the low-molecular acids produced an increase in drip point similar to that obtained by the low-molecular fraction.  A theoretical explanation of this behavior is attempted.  Bearing-test results were satisfactory.

        KÖLBEL, H., ACKERMANN, P., JUZA, R., AND TENTSCHART, H.  [Reaction Mechanism of the Fischer-Tropsch Synthesis.  II.  Investigation of Iron Catalysts in the Hydrogenation of Carbon Monoxide.]  See abs. 1948.