Abstract
Glycol diesters and mixtures of mono- and diesters have been prepared from methyl esters of partially hydrogenated soybean oil fatty acids and diethylene, dipropylene, neopentyl and triethylene glycols. The catalyst used in these reactions was a mixture of calcium acetate/barium acetate (3∶1, w/w). The reactions were carried out under nitrogen with 0.5% catalyst at temperatures in the range of 190–275°C. Borated esters of mixed mono- and diesters were prepared with 0.33 equivalent of boric acid per 1.0 equivalent hydroxyl group on the ester. Refractive indices, viscosities, and flash and fire points were determined for diesters, mixed mono- and diesters, and mixed diesters and borated esters. The viscosities, flash points and fire points indicate that these esters can be used as a component of lubricating oils. Wear-prevention characteristics of mixed diesters and borated esters indicated that they can be used as antifriction additives in lubricating oils.
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An erratum to this article is available at http://dx.doi.org/10.1007/BF02638910.
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Basu, H.N., Robley, E.M. & Norris, M.E. Preparation of glycol derivatives of partially hydrogenated soybean oil fatty acids and their potential as lubricants. J Am Oil Chem Soc 71, 1227–1230 (1994). https://doi.org/10.1007/BF02540542
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DOI: https://doi.org/10.1007/BF02540542