Production and purification of esters of conjugated linoleic acids
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United States of America Patent
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Issued Date -
Aug 16, 2007
app pub date -
Dec 23, 2003
filing date -
Dec 23, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A process to refine esters of conjugated linoleic acids via distillation in a single or multi-pass distillation operation is provided. Thermal rearrangement of conjugated linoleic acid components during distillation is prevented or reduced by the use of a low residence time and/or reduced pressure distillation apparatus. A process to produce refined esters of conjugated linoleic acids is also provided. The process transesterifies a linoleic acid-containing oil to generate an alkyl ester composition which further undergoes isomerization at a temperatures typically between about 90-140.degree. C. to form an ester stream containing conjugated linoleic acid esters, which is then distilled to obtain the refined esters of conjugated linoleic acids. The transesterification and isomerization steps can be performed in one reaction vessel without an intervening distillation step. The transesterification and isomerization steps can occur concurrently in a continuous reaction system using a dual reaction zone apparatus. Refined ester compositions produced by the processes and enriched in desirable conjugated linoleic acid isomers are also contemplated.

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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
STEPAN COMPANY | 22 WEST FRONTAGE RD NORTHFIELD IL 60093 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Bernhardt, Randal J | Antioch, IL | 65 | 702 |
Clauss, Steven L | Manville, NJ | 6 | 128 |
Galante, Jenifer Heydinger | Oakland, NJ | 8 | 125 |
Rongione, Joseph C | Middletown, NJ | 11 | 128 |
Xayariboun, Phouvieng | North Aurora, IL | 3 | 11 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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