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AssigneeDow Global Technologies LLC
InventorsZenon Lysenko, Sanjeev Katti, Richard Stringfield, Thomas Gregory, George J. Quarderer, Jr.
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A solid bed adsorptive process for separating a seed oil into two substantially pure triglyceride fractions. The process involves contacting a seed oil, such as castor oil, preferably as a concentrate, with an adsorbent in a bed, the adsorbent having a particle size greater than about 40 microns, and thereafter contacting the adsorbent with a desorbent material, preferably under minimal flow conditions, to obtain a raffinate output stream containing predominantly a second triglyceride and an extract output stream containing predominantly a first triglyceride. Purified fatty acid triglyceride esters obtainable from castor, vernonia, and lesquerella plant oils provide renewable, non-petroleum-based sources of chemical feedstocks.
A process of separating a plant oil comprising a mixture of triglyceride esters, the process comprising (a) contacting a seed oil, whose fatty acid composition comprises predominantly one principle fatty acid selected from ricinoleic, vernolic, and lesquerolic acids, at adsorption conditions with an adsorbent bed, the adsorbent having a particle size greater than about 40 microns, such that a first triglyceride product, characterized as having three fatty acids each identical to the principle fatty acid in the oil, is adsorbed more selectively by the adsorbent, as compared with a second triglyceride product, characterized as having either two, one, or no fatty acids identical to the principle fatty acid in the oil;
A process of separating a mixture of triglycerides obtainable from castor oil, the process comprising contacting a castor seed oil as a neat liquid with a silica adsorbent in a bed, the adsorbent having a particle size of greater than about 40 microns and less than about 800 microns, and optionally, having a pore size of greater than about 45 Angstroms and less than about 200 Angstroms in diameter;
Dependencies are inferred from the claim text.