Two-stage process for separating mixed fatty-acid esters

Details Two-stage process for separating mixed fatty-acid esters Two-stage process for separating mixed fatty-acid esters

C - Chemistry, Metallurgy

11

B

260/496.6

C11B 7/00 (2006.01) C11C 1/00 (2006.01)

Patent

CA 1156260

"TWO-STAGE PROCESS FOR SEPARATING MIXED FATTY-ACID ESTERS" ABSTRACT A process for separating an ester of a polyethanoid fatty acid and an ester of a monoethanoid fatty acid from a mixture comprising an ester of a polyethanoid fatty acid, an ester of a monoethanoid fatty acid and an ester of a saturated fatty acid which process comprises contacting the mixture at first adsorption conditions with a first adsorbent comprising a X or a Y zeolite containing a selected cation at the exchangeable cationic sites thereby selectively adsorbing the ester of a polyethanoid fatty acid and thereafter recovering the ester of a polyethanoid fatty acid by de- sorption with a desorbent material; removing from the first adsorbent a second mixture comprising an ester of a monoethanoid fatty acid and an ester of a saturated fatty acid; contacting the second mixture at second adsorption conditions with a second adsorbent comprising a X or a Y zeolite containing selected cations at the exchangeable cationic sites thereby selectively adsorbing the ester of a monoethanoid fatty acid and thereafter recovering the ester of a monoethanoid fatty acid by desorption with desorbent material having the same composition as the first mentioned desorbent material. The polyethanoid fatty acid and monoethanoid fatty acid esters are separated from the desorbent material by a single separa- tion means.

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