METHOD FOR PRODUCTION OF LIGNIN
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United States of America Patent
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app pub date -
Dec 29, 2014
filing date -
Oct 29, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method for the preparation of lignin, characterized in that an acid is added to an alkaline alcoholic solution of lignin and the precipitated lignin is separated, and, optionally, from the filtrate alcohol is removed in order to get further lignin; as well as a method for the preparation of a concentrated alkaline, alcoholic solution of lignin by membrane filtration; the use of the lignin thus prepared; and the isolation of hydroxy cinnamic acids from the solution, from which the lignin has been separated.
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| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| AT | A1 | AT510812 | Oct 29, 2010 |
| AR | A1 | AR083551 | Oct 25, 2011 |
| CA | A1 | CA2813798 | Oct 28, 2011 |
| US | A1 | US20130217869 | Oct 28, 2011 |
| EP | B1 | EP2632930 | Oct 28, 2011 |
| WO | A2 | WO2012054947 | Oct 28, 2011 |
International Classification(s)
- 2014 Application Filing Year
- C07G Class
- 48 Applications Filed
- 44 Patents Issued To-Date
- 91.67 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- C07G Class
- 25.71 % this patent is cited more than
- 10 Age