Process for obtaining fatty acid alkyl esters, rosin acids and sterols from crude tall oil
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United States of America Patent
Stats
-
Jul 14, 2015
Grant Date -
Oct 19, 2006
app pub date -
Feb 20, 2004
filing date -
Feb 21, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The disclosed invention refers to a process for obtaining fatty acid alkyl esters, rosin acids and sterols from crude tall oil (CTO), which is characterized by the following steps: (a) reacting the free fatty acids present in the CTO with lower alcohols; (b) esterifying the sterols in the CTO with boric acid or transesterifying the sterols with a catalyst; (c) separating the fatty acid lower alkyl esters and rosin acids from the remaining sterol borate esters or sterol esters of fatty acids to produce a stream of sterol esters; (d) separating the fatty acid alkyl esters from the rosin acids to produce a first stream of fatty acid alky esters and a second stream of rosin acids; and (e) converting the sterol esters into the free sterols to produce a third stream of free sterols.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2004 Application Filing Year
- C11B Class
- 30 Applications Filed
- 9 Patents Issued To-Date
- 30 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- C11B Class
- 12.82 % this patent is cited more than
- 10 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 14, 2027 |
