Process for separating triglycerides having different degrees of unsaturation
AssigneeUop LLC
InventorSanti Kulprathipanja
Life of this patent
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Abstract
The separation of monounsaturated triglycerides from polyunsaturated triglycerides is achieved by an adsorptive chromatographic process in liquid phase with silica gel as the adsorbent at temperatures higher than about 100.degree. C. Desorbents in the separation process include ketones, having from 3 to 8 carbon atoms in concentrations of up to about 25% (vol.) in normal or branched alkanes, e.g., n-hexane or iso-octane, or p-cymene in concentrations of 20% (vol.) to 100%.
Claims8
In a process for separating monounsaturated triglycerides from polyunsaturated triglycerides comprising contacting a mixture of mono- and polyunsaturated triglycerides with silica gel adsorbent to selectively adsorb said polyunsaturated triglycerides, removing said monounsaturated triglycerides from said adsorbent and desorbing said polyunsaturated triglycerides from said adsorbent with a desorbent comprising a ketone having from 3-8 carbon atoms, the improvement comprising conducting said separation at a temperature of at least about 100.degree. C. and with said ketone at a concentration of up to about 25% (vol.).
In a process for separating monounsaturated triglycerides from polyunsaturated triglycerides comprising contacting a mixture of mono- and polyunsaturated triglycerides with silica gel adsorbent to selectively adsorb said polyunsaturated triglycerides, removing said monounsaturated triglycerides from said adsorbent and desorbing said polyunsaturated triglycerides from said adsorbent with a desorbent, the improvement comprising conducting said separation at a temperature of at least about 100.degree. C. and said desorbent comprising p-cymene.
Dependencies are inferred from the claim text.