Continuous hydrogenation of levulinic acid
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United States of America Patent
Stats
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Dec 4, 2018
Grant Date -
Jan 25, 2018
app pub date -
Feb 16, 2016
filing date -
Feb 18, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
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US Family Size
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Non-US Coverage
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Abstract
The invention relates to a continuous or repetitive batch process for the hydrogenation of levulinic acid (LA) or esters thereof to at least gamma valerolactone (GVL) in a reactor comprising a feed stream and an outlet stream, in the presence of a solid Ru catalyst, said process comprising (a) pretreating said solid Ru catalyst with a reductant; and (b) reacting levulinic acid with hydrogen and the pretreated solid Ru catalyst obtained in step (a) at a temperature and residence time suitable to form at least GVL, characterized in that the pretreatment is in the presence of a first solvent which comprises water. This process is stable and little or no Ru will leak form the support.
First Claim
Other Claims data not available
Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| JP | A | JP2018508485 | Feb 16, 2016 |
| KR | A | KR20170118719 | Feb 16, 2016 |
| EP | A1 | EP3259261 | Feb 16, 2016 |
| WO | A1 | WO2016131821 | Feb 16, 2016 |
| CN | A | CN107406399 | Feb 16, 2016 |
International Classification(s)
- 2016 Application Filing Year
- C07D Class
- 5513 Applications Filed
- 4516 Patents Issued To-Date
- 81.92 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C07D Class
- 0 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jun 4, 2026 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 4, 2030 |
