Patent ID: 7667061
Filing Date: 2010-02-23
Classification: B01D,B01J,C07C,C11B,G01N

Abstract:
1. A method of preparing an enriched composition, wherein said method is a simulated moving bed chromatographic process comprising: (a) combining a first composition comprising: with an argentized alumina having been conditioned by contacting with a non-polar solvent for at least about 24 hours in the absence of said first composition; wherein said conditioned argentized alumina has a Hunter L color value that is at least about 20% lower than the Hunter L color value of said alumina prior to conditioning; and, wherein said conditioned argentized alumina is contained on chromatographic beds, columns or parts thereof arranged in a simulated moving bed chromatographic array; (b) contacting said combined first composition and said conditioned argentized alumina with one or more solvents simultaneously or in sequence; and (c) eluting a second composition that is enriched relative to said first composition in at least one of said fatty acid (C1-5) alkyl esters containing at least one unsaturated C wherein a second composition enriched in one or more of said fatty acid (C1-5) alkyl esters containing an unsaturated C