Liquid purification or separation – Processes – Chromatography
Reexamination Certificate
2006-08-29
2006-08-29
Drodge, Joseph (Department: 1723)
Liquid purification or separation
Processes
Chromatography
C210S659000, C210S660000, C210S661000, C210S680000, C554S191000, C554S193000
Reexamination Certificate
active
07097770
ABSTRACT:
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.
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Gregory Thomas
Katti Sanjeev
Lysenko Zenon
Quarderer, Jr. George J.
Stringfield Richard
Dow Global Technologies Inc.
Drodge Joseph
Zuckerman Marie F.
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