Gas and liquid phase catalytic Beckmann rearrangement of oximes to produce lactams
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United States of America Patent
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Jul 8, 2014
Grant Date -
May 2, 2013
app pub date -
Oct 23, 2012
filing date -
Oct 28, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
Methods for producing lactams from oximes by performing a Beckmann rearrangement using a silicoaluminophosphate catalyst are provided. These catalysts may be used in gas phase or liquid phase reactions to convert oximes into lactams. High conversion of oxime and high selectivity for the desired lactams are produced using the disclosed methods, including high conversion and selectivity for ε-caprolactam produced from cyclohexanone oxime and high conversion and selectivity for ω-laurolactam produced from cyclododecanone oxime.
First Claim
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International Classification(s)
- 2012 Application Filing Year
- C07D Class
- 4683 Applications Filed
- 3679 Patents Issued To-Date
- 78.57 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- C07D Class
- 28.38 % this patent is cited more than
- 11 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 8, 2026 |
